Author: "H. Miyata" / Publisher: american physical society (aps) - Searchworks@Jio Institute Digital Library Search Results

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425 results on '"H. Miyata"'

1. First determination of the spin and parity of the charmed-strange baryon Ξc(2970)+

Author: R. Mizuk, K. Chilikin, K. T. Kim, Y Choi, C. Beleño, Y. Kato, D. M. Asner, Pavel Krokovny, D. Dossett, K. Hayasaka, W. Sutcliffe, Zhukova, Y. Seino, J. Libby, D. Epifanov, K. Miyabayashi, D Cinabro, K. Trabelsi, B. Golob, A. Garmash, S. Wehle, A. Sangal, G. Varner, M. Uchida, Y. I. Kim, Leo Piilonen, C. P. Shen, F. Di Capua, H. Miyata, Takeo Kawasaki, A. K. Giri, K. Sumisawa, BG Cheon, T. J. Moon, J. S. H. Lee, N. K. Nisar, Babu, Z. Liptak, M. Niiyama, P Behera, A. Vossen, T. D. Kimmel, M. Masuda, T. K. Pedlar, S. Al Said, J. Biswal, Zhulanov, M. Nayak, P. Wang, H Aihara, L. K. Li, G. Schnell, T. V. Dong, T. Bilka, R. Kroeger, J. Schueler, Seongbae Yang, H. Ono, Saraju P. Mohanty, GB Mohanty, Vorobyev, E. Prencipe, D. Liventsev, TE Browder, P. Chang, U. Tamponi, C.-L. Hsu, K. K. Joo, S-H Park, Yongsun Kim, K. Senyo, C. Schwanda, S. Cunliffe, B. G. Fulsom, S. Jia, D. Matvienko, R. Itoh, X. P. Xu, A. Bozek, Peter Kodys, W. W. Jacobs, T. Matsuda, Zdenek Dolezal, T. Kuhr, M Iwasaki, Yang Li, S. Paul, R. Mussa, T. Ferber, Tao Luo, K. Tanida, S. K. Kim, A. Kuzmin, D. Kotchetkov, S. Uno, S Choudhury, L. Cao, S. C. Lee, M. Takizawa, C. MacQueen, G. Karyan, J. K. Ahn, L. Santelj, G. Bonvicini, Aulchenko, A. Ishikawa, M. Nakao, L. Li Gioi, John Yelton, Gaur, Samo Korpar, A. Vinokurova, S. Dubey, Y. Sakai, H. Kichimi, Rocky Bala Garg, F. Tenchini, O. Hartbrich, Zhiqing Zhang, Chunjie Wang, S. Patra, T. Podobnik, S. Pardi, T. Sumiyoshi, P. Krizan, S Ogawa, E. Wang, M. Campajola, Rakesh Kumar, M Merola, K. H. Kang, J. Wiechczynski, B.A. Shwartz, Y. Unno, Martin Ritter, R. Ayad, K. Cho, Seema Bahinipati, C. Hadjivasiliou, Bruce Yabsley, S. Nishida, G. De Nardo, M. T. Hedges, Y-J Kwon, K. Kumara, Y. Jin, T. Uglov, W-S Hou, Phillip Urquijo, M. E. Sevior, I. S. Lee, Savinov, Zhilich, P. Goldenzweig, M. Sumihama, I. Adachi, N. Dash, T. Mori, E. Solovieva, DY Kim, Semen Eidelman, J. H. Yin, G. Inguglia, K Kinoshita, R. Seidl, C. Kiesling, B. H. Kim, C. Z. Yuan, M. Bračko, Tagir Aushev, M. C. Chang, G. Pakhlova, S. K. Choi, S. Sandilya, Z. Natkaniec, S. E. Vahsen, Y. Iwasaki, S. Uehara, N. Rout, N. Gabyshev, D. Červenkov, M. Z. Wang, Martin Florian Bessner, H Ye, J. Bennett, S. H. Kim, M. Shapkin, H. Hayashii, R. Pestotnik, Dipak Kumar Sahoo, Popov, Kohei Ogawa, A. Chen, A. Natochii, K. Inami, M. T. Prim, T. Nakano, P. Pakhlov, G. Russo, H. Park, R. Van Tonder, B. Bhuyan, and J-G Shiu
Subjects: Quark, Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Parity (physics), 01 natural sciences, Baryon, KEKB, Angular distribution, Condensed Matter::Superconductivity, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract: We report results from a study of the spin and parity of $\Xi_{c}(2970)^+$ using a $980~\mathrm{fb^{-1}}$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The decay angle distributions in the chain $\Xi_{c}(2970)^+ \to \Xi_c(2645)^{0}\pi^{+} \to \Xi_c^{+}\pi^{-}\pi^{+}$ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the $\Xi_{c}(2970)^+$ spin $J =1/2$ over $3/2$ or $5/2$, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of $\Xi_{c}(2970)^+$ decay branching fractions $R={\mathcal{B}[ \Xi_{c}(2970)^+ \to \Xi_c(2645)^{0}\pi^{+} ]} / { \mathcal{B}[ \Xi_{c}(2970)^+ \to \Xi_c^{\prime0}\pi^{+} ]} =1.67 \pm 0.29\mathrm{(stat.)}^{ +0.15}_{ -0.09}\mathrm{(syst.)} \pm 0.25\mathrm{(IS)}$, where the last uncertainty is due to possible isospin-symmetry-breaking effects. This $R$ value favors the spin-parity $J^P=1/2^+$ with the spin of the light-quark degrees of freedom $s_{l}=0$. This is the first determination of the spin and parity of a charmed-strange baryon.
Published: 2021
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2. Test of Lepton-Flavor Universality in B→K*ℓ+ℓ− Decays at Belle

Author: H. Ono, G. Schnell, T. Iijima, H. Miyata, J. Biswal, Y. Sakai, A. K. Giri, BG Cheon, Massimo Berger, V.N. Zhilich, C. Z. Yuan, M. Masuda, A. Kuzmin, W. Sutcliffe, V. Babu, Y. Guan, Z Liptak, K. Kumara, Y. Unno, P Behera, S. Jia, T. Ferber, J-G Shiu, T. Matsuda, G. De Nardo, M. T. Hedges, M. C. Chang, S Ogawa, P. K. Resmi, S. Uno, C.-L. Hsu, S Choudhury, D. M. Asner, K. Hayasaka, V. Savinov, Daniel Greenwald, A. Garmash, Iki Adachi, G. Pakhlova, M. Z. Wang, N. K. Nisar, K. Trabelsi, S. Dubey, W. W. Jacobs, J. Libby, J. S. Lange, O. Hartbrich, T. Kuhr, DY Kim, K. Adamczyk, H. Kichimi, Tao Luo, K. Tanida, Y. Seino, Rakesh Kumar, M Merola, A. J. Schwartz, X. P. Xu, M. Uchida, V. Bhardwaj, Y Choi, G. Karyan, M. Niiyama, H Ye, J. F. Strube, S. H. Kim, D. Epifanov, Pavel Krokovny, X. L. Wang, H Aihara, GB Mohanty, S. Wehle, M. Campajola, R. Itoh, R. Van Tonder, H. Hayashii, A. Sangal, Jihwa Lee, Y. I. Kim, Leo Piilonen, L. Cao, C. Schwanda, A. B. Kaliyar, Takeo Higuchi, J. Kahn, T. K. Pedlar, R. Ayad, A. Rostomyan, Dipak Kumar Sahoo, S. Cunliffe, D Cinabro, R. Kulasiri, S. Nishida, J. MacNaughton, J. T. McNeil, B. G. Fulsom, K. Cho, Samo Korpar, J. Schueler, V. Gaur, E. Won, Seongbae Yang, U. Tamponi, G. Russo, H. Park, K. Senyo, A. Bozek, Kevin Varvell, Y. Ushiroda, Kohei Ogawa, W-S Hou, G. Varner, A. Natochii, F. Tenchini, K Kinoshita, K. Inami, B.A. Shwartz, S. E. Vahsen, TE Browder, T. Podobnik, T. Sumiyoshi, G. Inguglia, E. Prencipe, T. Uglov, Y. Tao, Martin Ritter, N. Dash, E. Solovieva, Y. Iwasaki, F. Di Capua, Y-J Kwon, Vladimir Zhulanov, Y. Jin, M Iwasaki, O. Schneider, N. Rout, S. C. Lee, D. Kotchetkov, M. E. Sevior, P. Goldenzweig, Zhiqing Zhang, Chunjie Wang, P. Wang, J. Haba, C. Niebuhr, Tagir Aushev, V. Zhukova, Y. Onuki, S. Sandilya, P. Pakhlov, M. Starič, Semen Eidelman, R. Mussa, V.M. Aulchenko, A. Ishikawa, M. Nakao, I. Komarov, R. Kroeger, D. Liventsev, R. Mizuk, K. Chilikin, J. H. Yin, M. Bračko, N. Gabyshev, Rocky Bala Garg, S-H Park, M. Takizawa, K. T. Kim, M. Nayak, T. J. Moon, Felix Metzner, H. Atmacan, D. Joffe, V. Vorobyev, Yang Li, V. Popov, L. Santelj, A. Chen, M. Shapkin, R. Pestotnik, and M. T. Prim
Subjects: Research program, Higher education, business.industry, media_common.quotation_subject, General Physics and Astronomy, Library science, 7. Clean energy, 01 natural sciences, Chinese academy of sciences, Excellence, 0103 physical sciences, Natural science, Christian ministry, 010306 general physics, business, China, Research center, media_common
Abstract: We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council including Grants No. DP180102629, No. DP170102389, No. DP170102204, No. DP150103061, No. FT130100303; Austrian Science Fund (FWF); the National Natural Science Foundation of China under Contracts No. 11435013, No. 11475187, No. 11521505, No. 11575017, No. 11675166, No. 11705209; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS), Grant No. QYZDJ-SSWSLH011; the CAS Center for Excellence in Particle Physics (CCEPP); the Shanghai Pujiang Program under Grant No. 18PJ1401000; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; National Research Foundation (NRF) of Korea Grants No. 2016R1D1A1B01010135, No. 2016R1D1A1B02012900, No. 2018R1A2B3003643, No. 2018R1A6A1A06024970, No. 2018R1D1A1B07047294, No. 2019K1A3A7A09033840, No. 2019R1I1A3A01058933; Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project, the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information, and KREONET/GLORIAD the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Science and Higher Education of the Russian Federation, Agreement No. 14.W03.31.0026; University of Tabuk research Grants No. S-1440-0321, No. S-0256-1438, and No. S-0280-1439 (Saudi Arabia); the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science, Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the U.S. Department of Energy and the National Science Foundation.
Published: 2021
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3. Erratum: Measurement of the CKM matrix element |Vcb| from B0→D*−ℓ+νℓ at Belle [Phys. Rev. D 100 , 052007 (2019)]

Author: R. B. Garg, B. Bhuyan, J-G Shiu, Andrey Sokolov, V. Savinov, H Ye, K. Nishimura, K. Inami, D. Epifanov, M. Z. Wang, L. Li Gioi, D. Červenkov, J. Haba, S. H. Kim, S. Sandilya, Tao Luo, K. Tanida, V. Gaur, H. Hayashii, S. Pardi, C. H. Kim, Semen Eidelman, G. Schnell, T. Iijima, Victoria Zhukova, Florian Urs Bernlochner, M. Starič, A. K. Giri, A. Chen, I. Adachi, BG Cheon, J. MacNaughton, Jihwa Lee, M Iwasaki, D. Matvienko, Y Choi, S. C. Lee, M. Bračko, V. Chekelian, Zhiqing Zhang, Chunjie Wang, F. Tenchini, S. Uno, DY Kim, M. Salehi, Pavel Krokovny, S. Al Said, J. Biswal, M. Campajola, GB Mohanty, M. T. Hedges, M. Masuda, V.N. Zhilich, D. Ferlewicz, D Cinabro, Samo Korpar, T. Sumiyoshi, S Choudhury, G. Bonvicini, B. K. Pal, K. Trabelsi, Kevin Varvell, Y. Iwasaki, J. Kahn, C. Schwanda, J. E. Fast, C. P. Shen, K. Senyo, J. F. Strube, K. T. Kim, P. Pakhlov, E. Waheed, D. Dossett, Vikas Bansal, V. Babu, P. Wang, O. Schneider, A. Vinokurova, S. K. Choi, T. Sanuki, Phillip Urquijo, T. Mori, K. Miyabayashi, I. Badhrees, M Merola, Y. Usov, V.E. Shebalin, M. Nayak, Y. Sakai, H Aihara, C. H. Li, G. Russo, H. Park, S-H Park, R. Pestotnik, Samo Stanič, T. Uglov, D. M. Asner, S. Nishida, T. Bilka, K. Hayasaka, M. Takizawa, K Kinoshita, K. Lieret, R. Mizuk, R. Ayad, K. Cho, Z. S. Stottler, G. Varner, Z. Doležal, Eunil Won, K. Chilikin, Z. Natkaniec, E. Prencipe, Y-J Kwon, Y. Jin, C. Beleño, R. Kulasiri, S. Jia, Y. Seino, M. T. Prim, M. E. Sevior, P. Goldenzweig, O. Grzymkowska, G. Pakhlova, TE Browder, G. Inguglia, S. Paul, P. Chang, C.-L. Hsu, H. Ono, Peter Kodys, W. W. Jacobs, E. Solovieva, T. Kuhr, S. Di Carlo, Y. Unno, G. Karyan, M. Uchida, L. K. Li, Leo Piilonen, D. Joffe, Tagir Aushev, Seongbae Yang, A. Vossen, A. Rostomyan, S. Cunliffe, B. G. Fulsom, O. Seon, Frank Simon, Vladimir Popov, R. Mussa, P. C. Lu, H. B. Jeon, A. Ishikawa, M. Nakao, P. Križan, D. Kotchetkov, S Ogawa, T. Kawasaki, R. Kroeger, D. Liventsev, B. Shwartz, K. Adamczyk, W. S. Hou, Alexei Kuzmin, A. B. Kaliyar, J. Schueler, A. Bozek, H. Atmacan, Felix Metzner, B. Golob, A. Garmash, N. K. Nisar, J. S. Lange, K. K. Joo, Yang Li, T. V. Dong, K. J. Nath, T. Hara, Y. Yusa, M. Niiyama, J. Libby, I. Nakamura, H. Miyata, A. Bobrov, H. E. Cho, and P Behera
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Cabibbo–Kobayashi–Maskawa matrix, 0103 physical sciences, Element (category theory), 010303 astronomy & astrophysics, 01 natural sciences, Vertical bar
Published: 2021
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4. Evidence for X(3872)→J/ψπ+π− Produced in Single-Tag Two-Photon Interactions

Author: R. Mussa, G.V. Russo, A. Ishikawa, W. S. Hou, Y. Seino, S. Jia, G. Inguglia, T. Matsuda, M. Nakao, C. MacQueen, B. Bhuyan, P. Chang, P. Križan, Somnath Choudhury, G. Bonvicini, Iki Adachi, A. Vinokurova, J. G. Shiu, V. Savinov, M. Campajola, S. Pardi, Doo Young Kim, H. Aihara, A. B. Kaliyar, O. Hartbrich, J. Kahn, C.-L. Hsu, J. Schueler, Y. Teramoto, Bruce Yabsley, D. Liventsev, B. H. Kim, J. Libby, D. M. Asner, K. Hayasaka, Rakesh Kumar, Peter Kodys, M. T. Prim, Takeo Kawasaki, V. Gaur, W. W. Jacobs, K. H. Kang, V.N. Zhilich, Y. Kato, W. Sutcliffe, A. Sangal, X. L. Wang, T. Uglov, V. Chekelian, G. B. Mohanty, S. Sandilya, T. Mori, G. Karyan, S. Cunliffe, K. Miyabayashi, G. Varner, M. Shapkin, Y. Usov, R. Van Tonder, M. C. Chang, A. K. Giri, M. Takizawa, R. Ayad, K. Cho, Jyoti Prakash Biswal, G. De Nardo, M. T. Hedges, T. K. Pedlar, N. K. Nisar, M. Iwasaki, Pavel Krokovny, K. Senyo, A. Garmash, M. Masuda, G. Schnell, T. Iijima, J. S. Lange, M. Starič, T. Bilka, Semen Eidelman, E. Nakano, Vladimir Zhulanov, R. Kroeger, M. Watanabe, B. G. Cheon, T. E. Browder, T. V. Dong, E. Won, R. Pestotnik, M. E. Sevior, I. S. Lee, T. D. Kimmel, A. Kuzmin, E.-J. Jang, P. Goldenzweig, S. Ogawa, E. Prencipe, L. K. Li, C. W. Joo, U. Tamponi, Shih-Chang Lee, T. Kuhr, Tao Luo, S.-J. Cho, K. Chilikin, K. Sumisawa, Daniel Greenwald, F. Tenchini, Y. Iwasaki, Y. J. Kwon, J. H. Yin, C. Kiesling, Seongbae Yang, H. Ono, C. Beleño, E. Waheed, N. Rout, V. Vorobyev, H. Miyata, T. J. Moon, Prafulla Kumar Behera, H. Hayashii, B. G. Fulsom, E. Wang, T. Podobnik, T. Sumiyoshi, H. Park, A. Bozek, D. Matvienko, M. Hernandez Villanueva, M. Merola, Y. Jin, C. H. Wang, S. Paul, H. Kichimi, S. Al Said, Martin Ritter, Tagir Aushev, V. Zhukova, Y. Onuki, Y. Unno, J. Bennett, Z. P. Zhang, H. Ye, M. Bračko, M. Z. Wang, K. Kinoshita, M. Nayak, T. Sanuki, S. Korpar, Saraju P. Mohanty, Seok Kim, D. Kotchetkov, T. Hara, M. Mrvar, Yongsun Kim, H. Atmacan, K. K. Joo, A. Chen, V. Babu, K. Lalwani, Dipak Kumar Sahoo, S. Uno, C. Schwanda, D. Cinabro, H. Nakazawa, Rocky Bala Garg, T. Ferber, Sadaharu Uehara, R. Kulasiri, Phillip Urquijo, Kohei Ogawa, A. Natochii, M. Sumihama, K. Inami, Y. B. Li, Y. Choi, V. Popov, L. Santelj, C. Hadjivasiliou, Y. Sakai, N. Gabyshev, D. Červenkov, G. Pakhlova, L. Li Gioi, P. L. Wang, K. Kumara, M. Uchida, Z. S. Stottler, V. Bhardwaj, Z. Liptak, R. Itoh, A. Rostomyan, Seokhee Park, F. Di Capua, P. Pakhlov, S. Nishida, Z. Natkaniec, P. Lewis, Leo Piilonen, X. P. Xu, K. Lieret, E. Solovieva, John Yelton, Z. Doležal, J. B. Singh, S. K. Choi, V. Shebalin, and S. Patra
Subjects: Physics, Particle physics, Meson, General Physics and Astronomy, Virtual particle, Electron, State (functional analysis), 01 natural sciences, law.invention, KEKB, law, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), 010306 general physics, Collider, X(3872)
Abstract: We report the first evidence for $X(3872)$ production in two-photon interactions by tagging either the electron or the position in the final state, exploring the highly virtual photon region. The search is performed in $e^+e^- \rightarrow e^+e^-J/\psi\pi^+\pi^-$, using 825 fb$^{-1}$ of data collected by the Belle detector operated at the KEKB $e^+e^-$ collider. We observe three $X(3872)$ candidates with an expected background of $0.11\pm 0.10$ events, with a significance of 3.2$\sigma$. We obtain an estimated value for $\tilde{\Gamma}_{\gamma\gamma}{\cal B}(X(3872)\rightarrow J/\psi\pi^+\pi^-$) assuming the $Q^2$ dependence predicted by a $c\bar{c}$ meson model, where $-Q^2$ is the invariant mass-squared of the virtual photon. No $X(3915)\rightarrow J/\psi\pi^+\pi^-$ candidates are found.
Published: 2021
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5. Measurement of time-dependent CP violation parameters in B0→KS0KS0KS0 decays at Belle

Author: R. Mizuk, C. Beleño, A. B. Kaliyar, L. Li Gioi, H. Miyata, Yongsun Kim, J. Li, J. Schueler, S. Uno, C. Schwanda, H. Ye, T. J. Moon, E. Won, A. K. Giri, K. Trabelsi, M. Masuda, G. B. Mohanty, K. Hayasaka, S. Pardi, L. Cao, M. Z. Wang, K. Kinoshita, S. Cunliffe, Seok Kim, Y. Guan, M. Shapkin, M. C. Chang, C.-L. Hsu, M. Takizawa, Y. Yusa, Z. P. Zhang, Peter Kodys, W. W. Jacobs, M. Röhrken, V. Babu, P. Goldenzweig, H. Ono, K. Chilikin, A. Garmash, Daniel Greenwald, G. Karyan, A. Sangal, G.V. Russo, T. Aushev, G. Schnell, C. MacQueen, H. Nakazawa, A. M. Bakich, J. E. Fast, B. G. Cheon, J. K. Ahn, S. Sandilya, L. E. Piilonen, G. Pakhlova, P. Oskin, R. Kulasiri, W. S. Hou, T. Ferber, M. Nayak, D. Matvienko, R. B. Garg, A. J. Schwartz, Z. Doležal, K. Sumisawa, M. Merola, Motoki Iwasaki, D. M. Asner, Alexei Kuzmin, D. Y. Kim, Ya-Qiu Jin, M. Starič, Y. Ushiroda, N. Gabyshev, D. Červenkov, B. G. Fulsom, Bruce Yabsley, P. K. Behera, V. Vorobyev, Jyoti Prakash Biswal, Seema Bahinipati, T. E. Browder, T. V. Dong, Y. Choi, Seokhee Park, L. Santelj, K. H. Kang, Y. Unno, R. Pestotnik, M. Campajola, T. Bilka, J. H. Yin, S. Korpar, Seongbae Yang, I. Adachi, K.-H. Kim, W. Sutcliffe, Y. Onuki, V. Gaur, W. B. Yan, H. Hayashii, O. Hartbrich, N. Dash, G. De Nardo, M. Mrvar, C. H. Kim, F. Tenchini, V. Savinov, E.-J. Jang, Z. Natkaniec, T. Podobnik, T. Sumiyoshi, M. Nakao, Rahul Kumar, U. Tamponi, B. Golob, C. Kiesling, S. Ogawa, N. K. Nisar, M. Hernandez Villanueva, R. Mussa, T. Morii, Victoria Zhukova, T. Higuchi, Vladimir Popov, J. G. Shiu, Martin Ritter, H. B. Jeon, J. S. Lange, T. Sanuki, J. MacNaughton, J. Libby, A. Ishikawa, V.E. Shebalin, Y. Iwasaki, Y. J. Kwon, A. Chen, S. Jia, S. Nishida, V.N. Zhilich, E. Wang, V. M. Aulchenko, Z. S. Stottler, P. Križan, K. K. Joo, R. Ayad, N. Rout, Phillip Urquijo, M. Bračko, Doyen Sahoo, Y. Sakai, S. K. Choi, K. Lieret, X. L. Wang, Y. B. Li, T. Uglov, K. Miyabayashi, Kohei Ogawa, C. H. Wang, Y. Seino, M. T. Prim, S. Paul, J. V. Bennett, T. Mori, H. Aihara, Shoichi Watanuki, K. Inami, K. Nishimura, V. Chekelian, D. Cinabro, C. Z. Yuan, V. V. Zhulanov, E. Solovieva, G. Inguglia, E. Prencipe, S. Eidelman, X. P. Xu, M. Rozanska, D. Kotchetkov, P. Pakhlov, Shih-Chang Lee, Sudhanwa Patra, Samo Stanič, H. Park, A. Bozek, V. Bhardwaj, K. Tanida, T. K. Pedlar, H. Kichimi, R. Kroeger, M. E. Sevior, I. S. Lee, T. Matsuda, G. Bonvicini, A. Vinokurova, P. Krokovny, K. Cho, M. Uchida, L. K. Li, D. Liventsev, G. S. Varner, A. Rostomyan, P. Wang, M. V. Purohit, K. Senyo, T. Kawasaki, and S. Al Said
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Zero (complex analysis), Resonance, 01 natural sciences, law.invention, Standard Model, KEKB, law, 0103 physical sciences, CP violation, 010306 general physics, Collider
Abstract: We measure the time-dependent $C\!P$ violation parameters in $B^{0} \to K^{0}_{S}K^{0}_{S}K^{0}_{S}$ decays using $772 \times 10^6$ $B {\mkern 1.5mu\overline{\mkern-1.5mu B \mkern-0.1mu}\mkern 0.1mu}$ pairs collected at the $\Upsilon (4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The obtained mixing-induced and direct $C\!P$ asymmetries are $-0.71 \pm 0.23~{\rm(stat)} \pm 0.05~{\rm(syst)}$ and $0.12 \pm 0.16~{\rm(stat)} \pm 0.05~{\rm(syst)}$, respectively. These values are consistent with the Standard Model predictions. The significance of $C\!P$ violation differs from zero by 2.5 standard deviations.
Published: 2021
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6. Search for a doubly charged DDK bound state in ϒ(1S, 2S) inclusive decays and via direct production in e+e− collisions at s=10.520 , 10.580, and 10.867 GeV

Author: R. Mussa, H. Miyata, Prafulla Kumar Behera, H. B. Jeon, A. Ishikawa, S. Al Said, H. Ye, M. Nakao, P. Križan, M. Uchida, Saraju P. Mohanty, Yongsun Kim, K. Lalwani, C. Schwanda, V. Bhardwaj, L. Santelj, S. Watanuki, Z. P. Zhang, M. Z. Wang, K. Kinoshita, C. Z. Yuan, E. Prencipe, G. S. Varner, R. Kulasiri, U. Tamponi, M. Shapkin, M. Röhrken, K. Chilikin, S. E. Vahsen, V.N. Zhilich, A. B. Kaliyar, W. Sutcliffe, M. Sumihama, D. Epifanov, S. Nishida, Martin Florian Bessner, J. Bennett, A. Rostomyan, P. Wang, B. G. Fulsom, Y. Iwasaki, J. G. Shiu, T. K. Pedlar, J. Schueler, G. Schnell, L. K. Li, K. Miyabayashi, R. Ayad, Seema Bahinipati, Jochen Dingfelder, W. B. Yan, Y. J. Kwon, V. Gaur, C. H. Wang, G. Pakhlova, R. Pestotnik, Dipak Kumar Sahoo, Seongbae Yang, C. W. Joo, Y. B. Li, K. Tanida, E. Won, L. Li Gioi, G. De Nardo, M. T. Hedges, N. Rout, S. Jia, T. Matsuda, S. Uno, Tagir Aushev, Y. Onuki, T. Kuhr, C. MacQueen, C. H. Li, M. Iwasaki, B. G. Cheon, M. Niiyama, Jyoti Prakash Biswal, A. Garmash, Andrey Sokolov, G. Bonvicini, A. Vinokurova, A. Natochii, T. Bilka, D. Y. Kim, K. Inami, Z. J. Liptak, R. Itoh, P. Krokovny, F. Tenchini, M. Campajola, K. Belous, S. Korpar, M. Watanabe, S. Sandilya, T. Podobnik, T. Sumiyoshi, Rakesh Kumar, K. H. Kang, K. Cho, S. C. Lee, F. Di Capua, Martin Ritter, Victoria Zhukova, B.A. Shwartz, I. Adachi, Semen Eidelman, A. Chen, T. Sanuki, S. Pardi, M. Starič, L. E. Piilonen, P. Oskin, H. Hayashii, E. Wang, L. Nayak, V. Babu, Vladimir Zhulanov, Y. Jin, T. Uglov, T. Ferber, R. Kroeger, Bruce Yabsley, M. E. Sevior, I. S. Lee, S. Cunliffe, P. Goldenzweig, J. Libby, D. M. Asner, K. Hayasaka, T. Mori, H. Aihara, M. C. Chang, G. Inguglia, Y. Guan, Tomoyuki Konno, K. Kumara, Y. Seino, M. T. Prim, Takeo Kawasaki, S.-J. Cho, Z. S. Stottler, D. Cinabro, P. Chang, M. Kumar, C. P. Shen, Seok Kim, M. Takizawa, Somnath Choudhury, D. Matvienko, Seokhee Park, John Yelton, Z. Doležal, K. Kim, H. Ono, S. K. Choi, M. Nayak, N. K. Nisar, J. S. Lange, R. Mizuk, T. Pang, S. Patra, Yoshinobu Unno, A. K. Giri, K. Sumisawa, M. Masuda, T. V. Dong, C.-L. Hsu, W. S. Hou, J. Li, C. Sharma, Peter Kodys, W. W. Jacobs, G. Karyan, V. Vorobyev, Y. Choi, V. Popov, Y. Sakai, O. Hartbrich, G. B. Mohanty, K. Lieret, K. K. Joo, N. Dash, E. Solovieva, X. P. Xu, S. Paul, D. Kotchetkov, B. Bhuyan, T. E. Browder, V. Savinov, R. Van Tonder, P. Pakhlov, G. Russo, H. Park, A. Bozek, Z. Natkaniec, D. Červenkov, J. H. Yin, S. Das, C. Kiesling, M. Bračko, A. Sangal, Rocky Bala Garg, M. Merola, K. Senyo, and C. Hadjivasiliou
Subjects: Physics, Direct production, Particle physics, KEKB, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, Bound state, 010306 general physics, 01 natural sciences, Spectral line
Abstract: We report the results of a first search for a doubly charged DDK bound state, denoted the R++, in ϒ(1S) and ϒ(2S) inclusive decays and via direct production in e+e- collisions at s=10.520, 10.580, and 10.867 GeV. The search uses data accumulated with the Belle detector at the KEKB asymmetric-energy e+e- collider. No significant signals are observed in the D+Ds∗+ invariant-mass spectra of all studied modes. The 90% credibility level upper limits on their product branching fractions in ϒ(1S) and ϒ(2S) inclusive decays (B(ϒ(1S, 2S)→R+++anything)×B(R++→D+Ds∗+)), the product values of Born cross section and branching fraction in e+e- collisions (σ(e+e-→R+++anything)×B(R++→D+Ds∗+)) at s=10.520, 10.580, and 10.867 GeV under different assumptions of R++ masses varying from 4.13 to 4.17 GeV/c2 and widths varying from 0 to 5 MeV are obtained.
Published: 2020
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7. Search for transitions from ϒ(4S) and ϒ(5S) to ηb(1S) and ηb(2S) with emission of an ω meson

Author: K. Miyabayashi, W. B. Yan, Jyoti Prakash Biswal, A. Garmash, P. Goldenzweig, C.-L. Hsu, L. Nayak, Seongbae Yang, S. Pardi, T. Aushev, S. Sandilya, U. Tamponi, H. Nakazawa, Peter Kodys, Vladimir Popov, M. Campajola, W. W. Jacobs, T. Ferber, V. Gaur, R. Mussa, G. Schnell, M. Niiyama, S. Jia, T. Matsuda, Deepak Kumar Sahoo, M. Starič, D. M. Asner, A. B. Kaliyar, P. K. Behera, H. Ono, X. P. Xu, H. Aihara, A. Ishikawa, M. Nakao, T. Iijima, G. Karyan, C. W. Joo, D. Kotchetkov, G. Bonvicini, Motoki Iwasaki, F. Tenchini, C. Hadjivasiliou, J. Schueler, A. Vinokurova, S. Dubey, V. Aulchenko, P. Krokovny, Kohei Ogawa, Bruce Yabsley, S. E. Vahsen, T. J. Moon, A. Natochii, P. Oskin, S. K. Choi, Y. Onuki, P. Križan, R. Mizuk, T. Podobnik, Y. Sakai, K. Inami, S. Ogawa, Y. Iwasaki, F. Di Capua, K. H. Kang, K. Cho, D. Epifanov, Soumya D. Mohanty, E. Won, C. H. Wang, S. Paul, L. Li Gioi, M. Nayak, Y. J. Kwon, K. Kumara, E. Wang, E. Waheed, M. Hernandez Villanueva, V. Bhardwaj, T. K. Pedlar, H. Ye, C. Z. Yuan, E. Prencipe, K. Lieret, C. H. Li, T. Sanuki, S. Wehle, R. Dhamija, N. Rout, Z. S. Stottler, J. Libby, Ya-Qiu Jin, Victoria Zhukova, L. K. Li, D. Liventsev, A. K. Giri, M. Z. Wang, K. Kinoshita, D. Y. Kim, Y. Unno, T. Uglov, A. Chen, E. Solovieva, K. Trabelsi, A. Sangal, J. H. Yin, G. S. Varner, M. Shapkin, C. P. Shen, Z. P. Zhang, S. Cunliffe, Martin Florian Bessner, Y. Seino, M. Masuda, R. Kroeger, K. Chilikin, M. Takizawa, G. B. Mohanty, R. Ayad, M. E. Sevior, M. T. Prim, M. Merola, R. Itoh, H. Miyata, K. Sumisawa, G. De Nardo, M. T. Hedges, A. Rostomyan, K. Tanida, P. Wang, Shoichi Watanuki, K. Gudkova, L. Cao, H. Atmacan, Rahul Kumar, D. Cinabro, R. Pestotnik, John Yelton, Z. Doležal, Andrey Sokolov, B. Golob, T. V. Dong, H. Kichimi, Y. Choi, Z. J. Liptak, T. Hara, L. Santelj, L. E. Piilonen, J. Wiechczynski, N. K. Nisar, T. Bilka, Seokhee Park, H. Hayashii, G. Pakhlova, Yongsun Kim, S. Uno, C. Schwanda, R. Kulasiri, P. Chang, O. Hartbrich, C. H. Kim, H. E. Cho, M. Watanabe, J. C. Dingfelder, J. S. Lange, K. Senyo, T. Pang, J. V. Bennett, T. Mori, Y. Usov, Semen Eidelman, Y. Yusa, G.V. Russo, Somnath Choudhury, W. S. Hou, Felix Metzner, V. Vorobyev, K. K. Joo, B. G. Cheon, K. Belous, S. Korpar, S. C. Lee, J. G. Shiu, S. Nishida, V. Chekelian, R. Van Tonder, R. B. Garg, B. Bhuyan, B. G. Fulsom, T. E. Browder, V. Savinov, P. Pakhlov, Philip Lewis, H. Park, A. Bozek, C. Kiesling, M. Bračko, N. Gabyshev, D. Červenkov, V.N. Zhilich, and D. Ferlewicz
Subjects: Physics, Particle physics, KEKB, Meson, 010308 nuclear & particles physics, law, 0103 physical sciences, 010306 general physics, Collider, 01 natural sciences, Belle experiment, law.invention
Abstract: Using data collected in the Belle experiment at the KEKB asymmetric-energy e+e− collider we search for transitions Υ(4S)→ η$_{b}$(1S)ω, Υ(5S)→η$_{b}$(1S)ω and Υ(5S)→η$_{b}$(2S)ω. No significant signals are observed and we set 90% confidence level upper limits on the corresponding visible cross sections: 0.2 pb, 0.4 pb and 1.9 pb, respectively.
Published: 2020
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8. Study of electromagnetic decays of orbitally excited Ξc baryons

Author: X. L. Wang, V. Chekelian, R. Van Tonder, M. Shapkin, J. K. Ahn, P. Pakhlov, K. Chilikin, G. Russo, H. Park, A. Bozek, P. Lewis, M. Uchida, J. Libby, D. M. Asner, C. MacQueen, C.-L. Hsu, B. Bhuyan, T. E. Browder, V. Savinov, K. Hayasaka, V. Bhardwaj, R. Ayad, Seema Bahinipati, Tagir Aushev, Y. Onuki, D. Epifanov, N. K. Nisar, G. S. Varner, J. S. Lange, S. Sandilya, J. B. Singh, E. Won, R. Pestotnik, Peter Kodys, T. J. Moon, W. W. Jacobs, S. K. Choi, T. K. Pedlar, X. P. Xu, D. Kotchetkov, Y. Seino, M. T. Prim, S. Al Said, M. Starič, A. Rostomyan, G. Schnell, T. Iijima, D. Y. Kim, C. W. Joo, S.-J. Cho, K. Kumara, M. Campajola, L. K. Li, P. Wang, B. G. Fulsom, Saraju P. Mohanty, Takeo Kawasaki, V.N. Zhilich, Y. Kato, S. Pardi, C. P. Shen, G. Karyan, G. De Nardo, Seok Kim, M. T. Hedges, A. B. Kaliyar, Seongbae Yang, M. Takizawa, F. Di Capua, W. Sutcliffe, A. Kuzmin, S. E. Vahsen, I. Adachi, Victoria Zhukova, Yongsun Kim, Z. S. Stottler, K. K. Joo, M. Merola, V. Babu, J. Schueler, R. Kulasiri, K. Lalwani, A. Chen, M. Sumihama, John Yelton, Z. Doležal, S. Jia, K. Lieret, Y. Choi, R. Mizuk, C. Schwanda, K. Miyabayashi, Y. Iwasaki, G. Inguglia, Y. J. Kwon, T. Ferber, V. Popov, T. Matsuda, S. Uno, L. Santelj, S. Ogawa, C. Beleño, K. Senyo, G. Bonvicini, M. Hernandez Villanueva, Shih-Chang Lee, E. Nakano, V. Gaur, Y. Sakai, S. Patra, A. Vinokurova, O. Hartbrich, H. Hayashii, E. Waheed, D. Matvienko, N. Rout, Bruce Yabsley, E. Solovieva, H. Ono, W. S. Hou, S. Nishida, G. B. Mohanty, B. H. Kim, P. Krokovny, Rakesh Kumar, Seokhee Park, M. Nayak, A. K. Giri, K. Sumisawa, K. H. Kang, K. Cho, H. Miyata, Prafulla Kumar Behera, W. B. Yan, V. Vorobyev, S.I. Eidelman, M. Z. Wang, K. Kinoshita, M. Masuda, E. Prencipe, T. V. Dong, Y. Unno, J. Bennett, Dipak Kumar Sahoo, Kohei Ogawa, A. Natochii, K. Inami, V.E. Shebalin, M. Iwasaki, B. G. Cheon, R. Itoh, S. Korpar, J. G. Shiu, Phillip Urquijo, Y. B. Li, Jyoti Prakash Biswal, J. F. Strube, E. Wang, Z. P. Zhang, G. Pakhlova, J. T. McNeil, T. Mori, H. Aihara, Y. Usov, M. Mrvar, A. Garmash, T. Sanuki, D. Liventsev, S. Cunliffe, M. C. Chang, F. Tenchini, T. Podobnik, T. Sumiyoshi, Martin Ritter, L. E. Piilonen, P. Oskin, L. Li Gioi, R. Mussa, A. Ishikawa, M. Nakao, P. Križan, Andrey Sokolov, Rocky Bala Garg, C. Hadjivasiliou, Z. Natkaniec, N. Gabyshev, D. Červenkov, J. H. Yin, C. Kiesling, M. Bračko, T. Bilka, M. Watanabe, U. Tamponi, C. H. Wang, S. Paul, H. Ye, Tao Luo, K. Tanida, D. Cinabro, H. Kichimi, P. Chang, Z. J. Liptak, B.A. Shwartz, Vladimir Zhulanov, Y. Jin, T. Uglov, R. Kroeger, M. E. Sevior, P. Goldenzweig, and Somnath Choudhury
Subjects: Physics, Quark, Particle physics, 010308 nuclear & particles physics, 01 natural sciences, Measure (mathematics), law.invention, Charmed baryons, Baryon, KEKB, law, Excited state, 0103 physical sciences, 010306 general physics, Collider
Abstract: Using 980 fb−1 of data collected with the Belle detector operating at the KEKB asymmetric-energy eþe− collider, we report a study of the electromagnetic decays of excited charmed baryons Ξcð2790Þ and Ξcð2815Þ. A clear signal (8.6 standard deviations) is observed for Ξcð2815Þ0 → Ξ0 cγ, and we measure: B½Ξcð2815Þ0 → Ξ0 cγ B½Ξcð2815Þ0 → Ξcð2645Þþπ− → Ξ0 cπþπ− ¼ 0.41 0.05 0.03. We also present evidence (3.8 standard deviations) for the similar decay of the Ξcð2790Þ0 and measure: B½Ξcð2790Þ0 → Ξ0 cγ B½Ξcð2790Þ0 → Ξ0þ c π− → Ξþ c γπ− ¼ 0.13 0.03 0.02. The first quoted uncertainties are statistical and the second systematic. We find no hint of the analogous decays of the Ξcð2815Þþ and Ξcð2790Þþ baryons and set upper limits at the 90% confidence level of: B½Ξcð2815Þþ → Ξþ c γ B½Ξcð2815Þþ → Ξcð2645Þ0πþ → Ξþ c π−πþ < 0.09, and B½Ξcð2790Þþ → Ξþ c γ B½Ξcð2790Þþ → Ξ00 c πþ → Ξ0 cγπþ < 0.06. Approximate values of the partial widths of the decays are extracted, which can be used to discriminate between models of the underlying quark structure of these excited states.
Published: 2020
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9. Search for B0 decays to invisible final states ( +γ ) at Belle

Author: K. Arinstein, J. Libby, Y. Chao, S. Nishida, A.E. Bondar, Y. Teramoto, C. Ng, K. Senyo, K. Miyabayashi, V. Chekelian, Z. P. Zhang, V. Gaur, M. Shapkin, A.L. Sibidanov, Y. Choi, Z. Doležal, H. O. Kim, S. Uno, Sunmin Ryu, Norihito Muramatsu, E. Nakano, B.A. Shwartz, E. Solovieva, K. T. Kim, H. Miyata, M. Bischofberger, Toru Iijima, T. E. Browder, M. C. Chang, T. Iwashita, G. Varner, Y. Hoshi, R. Gillard, D. M. Asner, G. Tatishvili, Hitoshi Yamamoto, P. Vanhoefer, Peter Kodys, M. Röhrken, K. Chilikin, J. B. Singh, K. Hayasaka, S. E. Vahsen, Jochen Dingfelder, A. Ishikawa, M. Nakao, H. Farhat, C. W. Park, Vladimir Zhulanov, E. Won, H. K. Park, J. Dalseno, Leo Piilonen, M. Iwabuchi, M. E. Sevior, A. Kuzmin, Y. Iwasaki, V. Zhilich, W. S. Hou, O. Schneider, R. Louvot, Frank Simon, H. Park, A. Bozek, Phillip Urquijo, G. B. Mohanty, S. Okuno, Peter Kvasnicka, R. Pestotnik, T. Kawasaki, H. J. Kim, M. Ritter, Y. Usov, T. A. Shibata, V. Vorobyev, J. Li, G. Bonvicini, S. H. Lee, I. Adachi, Z. Drásal, T. Kuhr, S. Esen, B. Bhuyan, Y. S. Sohn, Yasuyuki Horii, C. L. Hsu, M. Uchida, G. Pakhlova, A. M. Bakich, S. Sandilya, D. Liventsev, A. J. Schwartz, Marko Petrič, Hiroaki Aihara, Yang Li, Y. Sakai, T. Julius, Po-Hsun Chen, Yongsun Kim, C. Schwanda, H. J. Hyun, P. Smerkol, H. Sahoo, T. Hara, K. Cho, T. Uglov, J. Haba, R. Itoh, P. Chang, P. Wang, Z. Q. Liu, J. H. Kang, D. Epifanov, Pavel Krokovny, B. G. Cheon, Jung-Hyun Kim, Y. Miyazaki, I. S. Cho, Y. M. Goh, T. Sumiyoshi, James E. Fast, T. K. Pedlar, A. Moll, S. L. Olsen, Samo Korpar, K. M. Williams, T. Sanuki, Semen Eidelman, H. Kichimi, A. Chen, Y. Unno, K. Trabelsi, K. Inami, C. P. Shen, M. Sumihama, B. R. Ko, O. Nitoh, H. Hayashii, Y. B. Hsiung, D. Dutta, M. Watanabe, M. Starič, Y. Watanabe, J. G. Shiu, Tagir Aushev, Y. Yamashita, V.M. Aulchenko, Yueh-Feng Liu, Z. Natkaniec, T. Ohshima, N. Gabyshev, C. Kiesling, M. Bračko, J. B. Kim, Samo Stanič, and Y. J. Kwon
Subjects: Physics, Particle physics, Photon, 010308 nuclear & particles physics, Electron–positron annihilation, Resonance, Photon energy, 01 natural sciences, law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, 010306 general physics, Collider
Abstract: We report searches for B0→invisible and B0→invisible+γ decays, where the energy of the photon is required to be larger than 0.5 GeV. These results are obtained from a 711 fb-1 data sample that contains 772×106BB¯ pairs and was collected near the ϒ(4S) resonance with the Belle detector at the KEKB e+e- collider. We observe no significant signal for either decay and set upper limits on their branching fractions at 90% confidence level of B(B0→invisible)
Published: 2020
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10. Observation of a vector charmoniumlike state in e+e−→Ds+Ds1(2536)−+c.c

Author: D. Cinabro, G. Schnell, T. Iijima, Bumho Kim, Y. Choi, K. J. Nath, P. Chang, L. Santelj, T. Pang, S. Patra, P. Pakhlov, S. K. Choi, H. Hayashii, K. Tanida, A. M. Bakich, Y. Sakai, Rocky Bala Garg, N. Gabyshev, D. Červenkov, Samo Stanič, S. Nishida, Philip Lewis, Dipak Kumar Sahoo, T. Matsuda, S. Uno, A. Garmash, M. Nayak, H. Atmacan, K. Lieret, S. Pardi, W. S. Hou, H. Kichimi, G. Russo, H. Park, M. Takizawa, Victoria Zhukova, C. P. Shen, M. Bračko, A. Bozek, Y. Onuki, R. Mussa, A. Chen, G. Bonvicini, M. Uchida, Z. Doležal, V. Gaur, J. G. Shiu, Y. Iwasaki, A. Ishikawa, L. K. Li, Y. J. Kwon, V. Babu, K. Inami, E. Solovieva, V. Vorobyev, A. Vinokurova, O. Schneider, N. Rout, T. Bilka, Y. B. Li, V.M. Aulchenko, T. Ferber, R. Ayad, M. Watanabe, S. H. Kim, P. Krokovny, M. Z. Wang, K. Kinoshita, Soumen Paul, M. Röhrken, K. Chilikin, J. H. Yin, Vladimir Popov, B.A. Shwartz, G. S. Varner, J. Libby, D. M. Asner, K. Hayasaka, M. Iwasaki, Shih-Chang Lee, K. H. Kang, K. Cho, B. G. Cheon, Z. S. Stottler, B. Bhuyan, T. E. Browder, H. Ye, G. Pakhlova, S. Sandilya, D. Liventsev, Vladimir Zhulanov, C. H. Kim, Y. Jin, R. Itoh, B. Golob, K. Lalwani, R. Pestotnik, R. Kroeger, D. Epifanov, M. E. Sevior, I. S. Lee, P. Goldenzweig, C. Schwanda, A. Bobrov, M. Starič, A. Rostomyan, S. Korpar, Y. Seino, J. S. Lange, Andrey Sokolov, B. G. Fulsom, K. K. Joo, M. T. Prim, L. Li Gioi, F. Di Capua, D. Y. Kim, V. Savinov, T. K. Pedlar, W. Sutcliffe, K. Nishimura, D. Matvienko, S. Jia, R. Kulasiri, Seongbae Yang, James E. Fast, Seokhee Park, E. Won, V.N. Zhilich, C. H. Wang, I. Adachi, K. Miyabayashi, I. Badhrees, X. L. Wang, C. MacQueen, C. H. Li, R. Van Tonder, M. Campajola, G. Inguglia, H. Ono, R. Mizuk, H. Aihara, M. Niiyama, Y. Usov, Jyoti Prakash Biswal, C. Z. Yuan, E. Prencipe, F. Tenchini, T. Sumiyoshi, G. De Nardo, N. K. Nisar, Z. P. Zhang, S. Cunliffe, Yoshinobu Unno, L. E. Piilonen, P. Oskin, A. K. Giri, M. Masuda, T. V. Dong, L. Cao, C.-L. Hsu, K. Trabelsi, Peter Kodys, W. W. Jacobs, S. Di Carlo, G. Karyan, H. Miyata, Prafulla Kumar Behera, S.I. Eidelman, H. E. Cho, M. Merola, K. Senyo, T. Uglov, A. Kuzmin, and S. Ogawa
Subjects: Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, State (functional analysis), 010306 general physics, 01 natural sciences
Abstract: Using a data sample of 921.9 fb-1 collected with the Belle detector, we study the process of e+e-→Ds+Ds1(2536)-+c.c. via initial-state radiation. We report the first observation of a vector charmoniumlike state decaying to Ds+Ds1(2536)-+c.c. with a significance of 5.9σ, including systematic uncertainties. The measured mass and width are (4625.9-6.0+6.2(stat)±0.4(syst)) MeV/c2 and (49.8-11.5+13.9(stat)±4.0(syst)) MeV, respectively. The product of the e+e-→Ds+Ds1(2536)-+c.c. cross section and the branching fraction of Ds1(2536)-→D¯*0K- is measured from the DsD¯s1(2536) threshold to 5.59 GeV.
Published: 2019
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11. Measurements of the branching fractions B(B−→Λ¯c−Ξc′0) , B(B−→Λ¯c−Ξc(2645)0) and B(B−→Λ¯c−Ξc(2790)0)

Author: R. Mizuk, C. MacQueen, S. Pardi, S. Cunliffe, Andrey Sokolov, V. Babu, G. Schnell, T. Iijima, K. Nishimura, M. Z. Wang, K. Kinoshita, J. G. Shiu, Y. B. Li, M. Sumihama, T. Kuhr, F. Di Capua, H. Ono, M. Iwasaki, V. V. Zhulanov, J. E. Fast, T. Ferber, M. Campajola, Y. Sakai, B. G. Cheon, K. Lieret, S. Korpar, A. Garmash, S. Nishida, T. K. Pedlar, A. K. Giri, T. Bilka, S. K. Choi, Sudhanwa Patra, Shih-Chang Lee, Samo Stanič, X. L. Wang, L. E. Piilonen, M. Watanabe, M. Masuda, D. M. Asner, G. Pakhlova, P. Oskin, R. Kulasiri, M. Uchida, L. K. Li, Y. Iwasaki, E. Won, R. Mussa, Y. J. Kwon, E. Solovieva, H. Hayashii, M. Röhrken, K. Chilikin, C. H. Kim, H. Atmacan, R. Van Tonder, D. Liventsev, K. Tanida, K. Trabelsi, Z. S. Stottler, J. Libby, O. Schneider, N. Rout, P. K. Behera, A. Ishikawa, T. Matsuda, Y. Unno, B. Shwartz, R. B. Garg, L. Cao, A. Kuzmin, B. G. Fulsom, T. E. Browder, C. P. Shen, K. Lalwani, G. S. Varner, Seok Kim, S. Uno, Seongbae Yang, M. Niiyama, J. H. Yin, C. Schwanda, S. Ogawa, S. Jia, W. Sutcliffe, Y. Onuki, C.-L. Hsu, I. Adachi, R. Pestotnik, H. Kichimi, G. Bonvicini, M. Bračko, Vladimir Popov, A. Vinokurova, R. Itoh, A. Rostomyan, Y. Seino, V.N. Zhilich, B. Golob, C. Z. Yuan, V. M. Aulchenko, C. H. Wang, K. Inami, V. Savinov, Peter Kodys, W. W. Jacobs, N. K. Nisar, F. Tenchini, J. S. Lange, D. Ferlewicz, S. Eidelman, T. Podobnik, T. Sumiyoshi, C. H. Li, P. Goldenzweig, P. Krokovny, D. Matvienko, S. Sandilya, K. K. Joo, M. T. Prim, D. Y. Kim, S. Paul, L. Li Gioi, T. Pang, A. M. Bakich, Yang Li, E. Prencipe, H. Ye, P. Pakhlov, T. V. Dong, Victoria Zhukova, S. Di Carlo, Y. Choi, G.V. Russo, Philip Lewis, T. Uglov, K. H. Kang, K. Cho, M. Starič, Seokhee Park, G. Karyan, M. Nayak, K. J. Nath, I. Badhrees, W. S. Hou, D. Cinabro, R. Kroeger, M. E. Sevior, I. S. Lee, T. Hara, L. Santelj, G. Inguglia, N. Gabyshev, D. Červenkov, M. Takizawa, A. Chen, H. Park, A. Bozek, H. Miyata, M. Merola, Ya-Qiu Jin, John Yelton, P. Chang, Z. Doležal, R. Ayad, G. De Nardo, K. Senyo, K. Hayasaka, A. Bobrov, H. E. Cho, B. Grube, H. Aihara, Jyoti Prakash Biswal, V. Gaur, Deepak Kumar Sahoo, M. Nakao, and Z. P. Zhang
Subjects: Physics, 010308 nuclear & particles physics, Branching fraction, Analytical chemistry, Lambda, Branching (polymer chemistry), 01 natural sciences, Baryon, KEKB, Recoil, 0103 physical sciences, Mass spectrum, 010306 general physics, Bar (unit)
Abstract: Using the data sample of 711 fb-1 of ϒ(4S) on-resonance data taken by the Belle detector at the KEKB asymmetric-energy electron-positron collider, we present the first measurements of branching fractions of the decays B-→Λ¯c-Ξc′0, B-→Λ¯c-Ξc(2645)0, and B-→Λ¯c-Ξc(2790)0. The signal yields for these decays are extracted from the recoil mass spectrum of the system recoiling against Λ¯c- baryons in selected B- candidates. The branching fraction of B-→Λ¯c-Ξc(2790)0 is measured to be (1.1±0.4±0.2)×10-3, where the first uncertainty is statistical and the second is systematic. The 90% credibility level upper limits on B(B-→Λ¯c-Ξc′0) and B(B-→Λ¯c-Ξc(2645)0) are determined to be 6.5×10-4 and 7.9×10-4, respectively.
Published: 2019
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12. Azimuthal asymmetries of back-to-back π±−(π0, η, π±) pairs in e+e− annihilation

Author: P. Pakhlov, P. Goldenzweig, Z. P. Zhang, Jyoti Prakash Biswal, V. Gaur, Deepak Kumar Sahoo, M. Nakao, T. Bilka, M. Starič, M. Watanabe, L. Li Gioi, S. Nishida, A. Garmash, H. Ye, V. Chekelian, Y. J. Kwon, V. Bhardwaj, T. K. Pedlar, S. Pardi, R. Van Tonder, B. K. Pal, O. Schneider, L. E. Piilonen, V.N. Zhilich, R. Mizuk, J. V. Bennett, H. Aihara, Y. Sakai, M. Uchida, W. Ostrowicz, B. G. Fulsom, B. G. Cheon, G. Pakhlova, T. Matsuda, S. Jia, V. Savinov, K. Lieret, D. Liventsev, H. Miyata, G. Schnell, Bo Wang, H. Ono, C. H. Wang, S. Paul, M. Merola, G. S. Varner, K. Miyabayashi, I. Badhrees, R. Itoh, P. Krokovny, K. Hayasaka, A. Bobrov, D. Y. Kim, P. Wang, D. Cinabro, D. M. Asner, K. H. Kang, K. Cho, S. Korpar, H. E. Cho, C. MacQueen, S. C. Lee, Motoki Iwasaki, Peter Kodys, W. W. Jacobs, E. Solovieva, Ya-Qiu Jin, Seok Kim, R. Seidl, Hui Li, J. Schueler, Z. Natkaniec, S. Di Carlo, J. G. Shiu, V. Babu, S. Cunliffe, Megumi Naruki, R. Kroeger, Somnath Choudhury, E. Won, T. Aushev, J. Libby, G. Karyan, K. Inami, K. Senyo, D. Kotchetkov, M. Campajola, R. Mussa, A. K. Giri, T. Ferber, V. M. Aulchenko, E.-J. Jang, Y. Seino, A. Ishikawa, Y. B. Li, M. Masuda, M. T. Prim, M. Z. Wang, G.V. Russo, Z. S. Stottler, P. Križan, L. Cao, F. Di Capua, F. Tenchini, Seongbae Yang, Tao Luo, K. Tanida, K. Huang, T. Uglov, A. Vossen, Frank Simon, Vladimir Popov, H. Hayashii, S. Uno, C. Schwanda, V. V. Zhulanov, T. Sanuki, Semen Eidelman, Victoria Zhukova, A. M. Bakich, A. Chen, D. Červenkov, E. Prencipe, Sudhanwa Patra, T. V. Dong, Y. Choi, K. J. Nath, L. Santelj, O. Hartbrich, M. Bračko, T. Nakano, M. Takizawa, and R. Pestotnik
Subjects: Physics, Quark, Particle physics, Annihilation, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Thrust, 01 natural sciences, Belle experiment, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: This work reports the first observation of azimuthal asymmetries around the thrust axis in e+e- annihilation of pairs of back-to-back charged pions in one hemisphere, and π0 and η mesons in the opposite hemisphere. These results are complemented by a new analysis of pairs of back-to-back charged pions. The π0 and η asymmetries rise with the relative momentum z of the detected hadrons as well as with the transverse momentum with respect to the thrust axis. These asymmetries are sensitive to the Collins fragmentation function H1⊥ and provide complementary information to previous measurements with charged pions and kaons in the final state. In particular, the η final states will provide additional information on the flavor structure of H1⊥. This is the first measurement of the explicit transverse-momentum dependence of the Collins fragmentation function from Belle data. It uses a dataset of 980.4 fb-1 collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV.
Published: 2019
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13. Measurement of the CKM matrix element |Vcb| from B0→D*−ℓ+νℓ at Belle

Author: H. Ye, R. Mizuk, K. Chilikin, C. Beleño, S. Al Said, R. Mussa, P. C. Lu, H. B. Jeon, P. Goldenzweig, A. Ishikawa, S. Sandilya, Jihwa Lee, G. Pakhlova, M. Nakao, A. Kuzmin, R. Kulasiri, P. Križan, K. Inami, K. T. Kim, S. K. Choi, Jyoti Prakash Biswal, M. Merola, S. Ogawa, M. Starič, I. Adachi, J. G. Shiu, S. Jia, S. Uno, C. Schwanda, D. Y. Kim, A. K. Giri, M. Salehi, E. Waheed, O. Grzymkowska, C. H. Wang, Y-J Kwon, A. Garmash, Phillip Urquijo, V. Gaur, D. Epifanov, S. Paul, M. Masuda, V. Bansal, G. B. Mohanty, R. Kroeger, D. Cinabro, J. E. Fast, M. E. Sevior, D. Dossett, H. Miyata, G. Schnell, F. Tenchini, M. Nayak, J. MacNaughton, D. Matvienko, T. Bilka, G. Inguglia, Tao Luo, Andrey Sokolov, R. B. Garg, E. Prencipe, K. Tanida, B. Bhuyan, G. Varner, Ya-Qiu Jin, Seokhee Park, Y. Iwasaki, T. Sumiyoshi, Samo Korpar, R. Ayad, K. Cho, H. Hayashii, P. K. Behera, P. Chang, T. Sanuki, M. Campajola, T. Kuhr, B. Golob, C.-L. Hsu, C. H. Kim, K. Nishimura, B. Shwartz, B. G. Fulsom, T. E. Browder, A. Bobrov, Peter Kodys, V.N. Zhilich, D. Ferlewicz, N. K. Nisar, W. W. Jacobs, O. Schneider, G. Bonvicini, J. S. Lange, K. Senyo, Somnath Choudhury, M. Z. Wang, K. Kinoshita, S. Pardi, A. Vinokurova, C. H. Li, Z. S. Stottler, H. E. Cho, M. T. Hedges, V.E. Shebalin, T. Kawasaki, T. Uglov, S. Di Carlo, K. Miyabayashi, I. Badhrees, S. Cunliffe, Semen Eidelman, G. Karyan, A. B. Kaliyar, M. Niiyama, Tagir Aushev, M. Uchida, J. Schueler, J. Libby, L. K. Li, V. Savinov, E. Won, H. Ono, I. Nakamura, Kevin Varvell, D. Liventsev, H. Atmacan, T. Mori, H. Aihara, K. Adamczyk, G.V. Russo, Y. Usov, Toru Iijima, A. Rostomyan, P. Wang, D. M. Asner, K. Hayasaka, W. S. Hou, V. Chekelian, Y. Unno, Z. P. Zhang, Y. Seino, B. K. Pal, M. T. Prim, P. Pakhlov, S. Nishida, Z. Natkaniec, H. Park, A. Bozek, Motoki Iwasaki, D. Kotchetkov, Y. Sakai, K. Lieret, E. Solovieva, Leo Piilonen, D. Joffe, Seongbae Yang, A. Vossen, O. Seon, Frank Simon, Vladimir Popov, M. Takizawa, Z. Doležal, B. G. Cheon, J. Haba, V. Babu, S. C. Lee, Pavel Krokovny, K. Trabelsi, R. Pestotnik, J. Kahn, C. P. Shen, Seok Kim, Victoria Zhukova, A. Chen, Felix Metzner, K. K. Joo, Yang Li, T. V. Dong, Y. Choi, K. J. Nath, T. Hara, Y. Yusa, D. Červenkov, J. F. Strube, Samo Stanič, Florian Urs Bernlochner, M. Bračko, and L. Li Gioi
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Cabibbo–Kobayashi–Maskawa matrix, Branching fraction, Electron–positron annihilation, Electroweak interaction, 01 natural sciences, 0103 physical sciences, Heavy quark effective theory, Matrix element, 010306 general physics, Two-form, Lepton
Abstract: We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| from B0→D*-l+νl decays, reconstructed with the full Belle data set of 711 fb−1 integrated luminosity. Two form factor parametrizations, originally conceived by the Caprini-Lellouch-Neubert (CLN) and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product F(1)ηEW|Vcb| and the decay form factors, where F(1) is the normalization factor and ηEW is a small electroweak correction. In the CLN parametrization we find F(1)ηEW|Vcb|=(35.06±0.15±0.56)×10-3, ρ2=1.106±0.031±0.007, R1(1)=1.229±0.028±0.009, R2(1)=0.852±0.021±0.006. For the BGL parametrization we obtain F(1)ηEW|Vcb|=(34.93±0.23±0.59)×10-3, which is consistent with the world average when correcting for F(1)ηEW. The branching fraction of B0→D*-l+νl is measured to be B(B0→D*-l+νl)=(4.90±0.02±0.16)%. We also present a new test of lepton flavor universality violation in semileptonic B decays, B(B0→D*-e+ν)B(B0→D*-μ+ν)=1.01±0.01±0.03. The errors quoted correspond to the statistical and systematic uncertainties, respectively. This is the most precise measurement of F(1)ηEW|Vcb| and form factors to date and the first experimental study of the BGL form factor parametrization in an experimental measurement.
Published: 2019
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14. Search for Ω(2012)→KΞ(1530)→KπΞ at Belle

Author: M. Takizawa, R. Ayad, John Yelton, Z. Doležal, K. Huang, Y. Sakai, K. Lieret, Shih-Chang Lee, Jyoti Prakash Biswal, F. Tenchini, T. Sumiyoshi, P. Goldenzweig, W. Sutcliffe, J. K. Lee, V. Gaur, Martin Ritter, Y. Onuki, H. Miyata, M. Nakao, S. Sandilya, T. Sanuki, J. E. Fast, I. Adachi, Bo Wang, M. Salehi, L. E. Piilonen, G. Pakhlova, J. MacNaughton, H. Ono, E. Solovieva, M. Starič, K. Hayasaka, A. Bobrov, Massimo Berger, K. T. Kim, D. Y. Kim, Jihwa Lee, Y. Unno, J. Libby, J. H. Yin, H. E. Cho, J. G. Shiu, A. M. Bakich, D. Kotchetkov, J. T. McNeil, G. Schnell, M. Niiyama, R. Kroeger, M. E. Sevior, I. S. Lee, M. Merola, S. K. Choi, C. Z. Yuan, T. Iijima, Phillip Urquijo, H. Hayashii, E. Prencipe, S. E. Vahsen, V. Babu, T. Aushev, D. Epifanov, F. Di Capua, K. Senyo, T. Kawasaki, T. Bilka, M. Sumihama, Y. B. Li, S. Cunliffe, Y. Iwasaki, Y. Seino, N. Gabyshev, D. Červenkov, J. V. Bennett, T. Mori, H. Aihara, Y. Usov, Y. J. Kwon, V. Bhardwaj, T. K. Pedlar, Hyunyong Kim, B. Golob, T. Uglov, M. Uchida, R. Mussa, P. C. Lu, O. Schneider, M. Nayak, Z. P. Zhang, G. De Nardo, L. K. Li, R. Mizuk, N. K. Nisar, D. Liventsev, J. S. Lange, M. Iwasaki, Ya-Qiu Jin, B. G. Cheon, A. Garmash, A. Ishikawa, J. F. Strube, D. Cinabro, L. Li Gioi, Kohei Ogawa, T. Pang, T. Matsuda, S. Al Said, C. Beleño, G.V. Russo, G. S. Varner, H. Ye, K. Inami, G. Inguglia, K. Tanida, P. Križan, R. Itoh, P. K. Behera, A. Rostomyan, W. S. Hou, P. Wang, A. Vinokurova, S. Korpar, Sudhanwa Patra, N. Dash, M. Z. Wang, K. Kinoshita, P. Krokovny, Andrey Sokolov, Somnath Choudhury, W. Ostrowicz, U. Tamponi, A. K. Giri, S. Uno, C. Schwanda, K. H. Kang, K. Cho, A. B. Kaliyar, S. Pardi, J. Schueler, S. Jia, E. Won, D. M. Asner, M. Masuda, H. Kichimi, K. Nishimura, C. P. Shen, Seok Kim, L. Cao, Rahul Kumar, A. Kuzmin, O. Grzymkowska, C. H. Wang, V.E. Shebalin, S. Ogawa, S. Paul, M. Bračko, Peter Kodys, W. W. Jacobs, C. MacQueen, J. K. Ahn, S. Di Carlo, G. Karyan, M. Campajola, V.N. Zhilich, Y. Kato, D. Joffe, Seongbae Yang, A. Vossen, O. Seon, Vladimir Popov, D. Matvienko, Seokhee Park, Victoria Zhukova, A. Chen, K. Chilikin, R. Pestotnik, T. Nakano, B. G. Fulsom, T. E. Browder, V. Savinov, S. Eidelman, P. Pakhlov, A. Bozek, S. Nishida, V. Chekelian, R. Van Tonder, B. K. Pal, K. K. Joo, Seema Bahinipati, T. V. Dong, Y. Choi, K. J. Nath, L. Santelj, O. Hartbrich, and Y. Yusa
Subjects: Nuclear physics, Physics, Baryon, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Detector, Pi, Molecule, 010306 general physics, Branching (polymer chemistry), 01 natural sciences, Omega
Abstract: Using data samples of e+e- collisions collected at the ϒ(1S), ϒ(2S), and ϒ(3S) resonances with the Belle detector, we search for the three-body decay of the Ω(2012) baryon to KπΞ. This decay is predicted to dominate for models describing the Ω(2012) as a KΞ(1530) molecule. No significant Ω(2012) signals are observed in the studied channels, and 90% credibility level upper limits on the ratios of the branching fractions relative to KΞ decay modes are obtained.
Published: 2019
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15. First measurements of absolute branching fractions of the Ξc+ baryon at Belle

Author: P. Goldenzweig, S. Pardi, M. Uchida, L. K. Li, D. Liventsev, D. M. Asner, J. F. Strube, S. Nishida, Jyoti Prakash Biswal, Sudhanwa Patra, M. Starič, A. B. Kaliyar, M. Bračko, Z. S. Stottler, G. S. Varner, J. Schueler, I. Adachi, V. Chekelian, A. M. Bakich, L. Li Gioi, E. Won, N. Gabyshev, D. Červenkov, M. Salehi, Y. Onuki, A. Rostomyan, P. Wang, J. K. Lee, V. Gaur, R. Van Tonder, B. K. Pal, V.E. Shebalin, D. Epifanov, L. E. Piilonen, H. Atmacan, Deepak Kumar Sahoo, V.N. Zhilich, R. Mizuk, R. Mussa, Y. Kato, P. C. Lu, C. P. Shen, M. Nakao, Seok Kim, R. B. Garg, J. G. Shiu, G. Pakhlova, B. Bhuyan, B. G. Fulsom, S. E. Vahsen, J. Libby, J. MacNaughton, T. E. Browder, V. Babu, D. Matvienko, R. Kulasiri, G.V. Russo, V. Bhardwaj, T. K. Pedlar, H. Ye, T. Aushev, C. Beleño, W. S. Hou, T. Ferber, T. Uglov, V. Savinov, Y. B. Li, M. Nayak, Y. Choi, K. J. Nath, Seokhee Park, R. Ayad, K. Inami, T. Hara, Ya-Qiu Jin, M. Sumihama, Motoki Iwasaki, Y. Ushiroda, S. Eidelman, Z. P. Zhang, A. Ishikawa, K. Miyabayashi, L. Santelj, K. Senyo, S. Al Said, Y. Seino, P. Pakhlov, M. Niiyama, Y. Iwasaki, Y. J. Kwon, T. Matsuda, J. H. Yin, T. Kawasaki, M. Z. Wang, K. Kinoshita, Shoichi Watanuki, K. Tanida, U. Tamponi, O. Schneider, A. K. Giri, H. Park, A. Bozek, S. Cunliffe, Victoria Zhukova, B. G. Cheon, N. K. Nisar, A. Vinokurova, K. Lalwani, S. Uno, C. Schwanda, D. Cinabro, S. Jia, J. S. Lange, Shih-Chang Lee, A. Kuzmin, M. Masuda, G. B. Mohanty, H. Kichimi, P. Krokovny, Andrey Sokolov, H. Aihara, A. Chen, S. Ogawa, J. Haba, O. Grzymkowska, G. Inguglia, C. H. Wang, K. Cho, H. Ono, S. Paul, B. Shwartz, J. E. Fast, L. Cao, H. Miyata, S. Korpar, D. Dossett, J. K. Ahn, K. K. Joo, F. Tenchini, K. Chilikin, H. Hayashii, Hyunyong Kim, A. J. Schwartz, T. Sumiyoshi, Bo Wang, K. Nishimura, C. H. Kim, R. Kroeger, M. E. Sevior, I. S. Lee, Martin Ritter, T. Bilka, M. Campajola, T. Sanuki, Y. Ban, K. Hayasaka, A. Bobrov, Y. Yusa, A. Garmash, H. E. Cho, Peter Kodys, W. W. Jacobs, R. Pestotnik, B. Grube, Somnath Choudhury, Toru Iijima, V. Bansal, V. V. Zhulanov, S. Di Carlo, G. Karyan, T. J. Moon, Y. Unno, Jihwa Lee, P. K. Behera, Y. Sakai, M. Merola, K. T. Kim, K. Lieret, D. Y. Kim, G. Schnell, T. Kuhr, C. H. Li, E. Solovieva, M. Takizawa, D. Joffe, Seongbae Yang, John Yelton, Z. Doležal, Frank Simon, Vladimir Popov, D. Kotchetkov, P. Križan, Massimo Berger, C. Z. Yuan, and E. Prencipe
Subjects: Physics, Baryon, Particle physics, KEKB, 010308 nuclear & particles physics, Branching fraction, Product (mathematics), Electron–positron annihilation, 0103 physical sciences, 010306 general physics, Lambda, 01 natural sciences, Bar (unit)
Abstract: We present the first measurements of the absolute branching fractions of $\Xi_c^+$ decays into $\Xi^- \pi^+ \pi^+$ and $p K^- \pi^+$ final states. Our analysis is based on a data set of $(772\pm 11)\times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. We measure the absolute branching fraction of $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ with the $\Xi_c^+$ recoiling against $\bar{\Lambda}_c^-$ in $\bar{B}^0$ decays resulting in ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}) = [1.16 \pm 0.42(\rm stat.) \pm 0.15(\rm syst.)] \times 10^{-3}$. We then measure the product branching fractions ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+)$ and ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to p K^- \pi^+)$. Dividing these product branching fractions by $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ yields: ${\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+) = [2.86 \pm 1.21(\rm stat.) \pm 0.38(\rm syst.)]\%$ and ${\cal B}(\Xi_c^+ \to p K^- \pi^+)=[0.45 \pm 0.21(\rm stat.) \pm 0.07(\rm syst.)]\%$. Our result for ${\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+)$ can be combined with $\Xi_c^+$ branching fractions measured relative to $\Xi_c^+ \to \Xi^- \pi^+ \pi^+$ to set the absolute scale for many $\Xi_c^+$ branching fractions.
Published: 2019
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16. Search for B0→X(3872)γ

Author: A. Garmash, P. K. Behera, P. C. Chou, K. K. Joo, L. E. Piilonen, G. Pakhlova, R. Kulasiri, M. Sumihama, Motoki Iwasaki, Y. Ushiroda, H. Hayashii, Y. Sakai, S. Eidelman, K. Lieret, Jihwa Lee, P. Pakhlov, S. Al Said, M. Merola, G. Schnell, T. Iijima, E. Solovieva, S. Pardi, S. E. Vahsen, D. Joffe, H. Park, A. Bozek, Y. Yusa, J. V. Bennett, Y. Tao, T. Mori, H. Aihara, H. Miyata, M. Uchida, Seongbae Yang, A. Vossen, Kohei Ogawa, O. Seon, T. Matsuda, Bo Wang, S. Uno, C. Schwanda, Vladimir Popov, R. Mussa, V. Babu, B. G. Cheon, I. Adachi, Y. Iwasaki, Y. J. Kwon, G.V. Russo, Z. P. Zhang, T. Aushev, K. Inami, A. Ishikawa, K. Hayasaka, A. Bobrov, M. Salehi, R. B. Garg, T. V. Dong, Y. Choi, K. J. Nath, D. Kotchetkov, T. Ferber, D. Liventsev, O. Schneider, L. Santelj, T. E. Browder, C. H. Li, P. Križan, B. G. Fulsom, W. S. Hou, Y.-T. Lai, Z. S. Stottler, H. E. Cho, P. Krokovny, Jyoti Prakash Biswal, V. Savinov, O. Hartbrich, J. Libby, G. S. Varner, J. Haba, K. Cho, Takuro Sanuki, M. Nayak, M. Niiyama, J. K. Lee, V. Gaur, D. Epifanov, R. Itoh, R. Ayad, P. Goldenzweig, S. Sandilya, S. Korpar, A. Rostomyan, P. Wang, S. Nishida, Y. Seino, Seok Kim, M. Starič, N. Dash, J. MacNaughton, Ya-Qiu Jin, Shoichi Watanuki, T. Kumita, T. K. Pedlar, J. G. Shiu, D. Cinabro, H. Ono, Phillip Urquijo, V.N. Zhilich, Y. Kato, G. Inguglia, V. Chekelian, A. Kuzmin, C.-L. Hsu, Y. B. Li, P. Chang, Rahul Kumar, K. Nishimura, V.E. Shebalin, V. V. Zhulanov, S. Ogawa, Y. Unno, R. Van Tonder, K. Miyabayashi, I. Badhrees, B. K. Pal, Somnath Choudhury, K. Senyo, Peter Kodys, E. Waheed, W. W. Jacobs, T. Kawasaki, D. Y. Kim, B. Bhuyan, S. Di Carlo, R. Mizuk, J. E. Fast, T. Uglov, M. Campajola, M. Z. Wang, K. Kinoshita, T. Bilka, M. Watanabe, J. H. Yin, D. M. Asner, F. Tenchini, A. K. Giri, S. Jia, C. Kiesling, T. Sumiyoshi, M. Masuda, O. Grzymkowska, C. H. Wang, S. Paul, L. Li Gioi, Martin Ritter, M. Bračko, Tao Luo, K. Tanida, J. S. Lange, H. Ye, L. Cao, A. M. Bakich, S. Cunliffe, A. B. Kaliyar, N. Gabyshev, D. Červenkov, J. Schueler, E. Won, J. F. Strube, H. Kichimi, Gagan Bihari Mohanty, K. Chilikin, H. Atmacan, J. B. Singh, S. K. Choi, Sudhanwa Patra, M. Takizawa, John Yelton, Z. Doležal, R. Pestotnik, W. Sutcliffe, Y. Onuki, Massimo Berger, V. M. Aulchenko, C. Z. Yuan, R. Kroeger, M. E. Sevior, E. Prencipe, Shih-Chang Lee, B. Shwartz, Victoria Zhukova, and A. Chen
Subjects: Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, Resonance, 01 natural sciences, Luminosity, law.invention, KEKB, law, 0103 physical sciences, 010306 general physics, Collider, Energy (signal processing), X(3872)
Abstract: We report the results of a search for the decay $B^0 \to X(3872)(\to J/\psi \pi^+ \pi^-) \gamma$. The analysis is performed on a data sample corresponding to an integrated luminosity of $711\,{\rm fb}^{-1}$ and containing $772 \times 10^6 B\bar{B}$ pairs, collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider running at the $\Upsilon(4S)$ resonance energy. We find no evidence for a signal and place an upper limit of $\mathcal{B}(B^0 \to X(3872)\gamma)\times \mathcal{B}(X(3872) \to J/\psi \pi^+ \pi^-) < 5.1 \times 10^{-7}$ at 90% confidence level.
Published: 2019
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17. Evidence for the decay B0→pp¯π0

Author: L. E. Piilonen, K. Nishimura, G. Pakhlova, H. Miyata, R. Kulasiri, Bo Wang, D. Joffe, Seongbae Yang, K. Hayasaka, A. Bobrov, C.-L. Hsu, Peter Kodys, W. W. Jacobs, S. Di Carlo, G. Karyan, K. T. Kim, Frank Simon, P. C. Lu, R. Mizuk, C. Beleño, K. Adamczyk, Vladimir Popov, G.V. Russo, S. K. Choi, A. Ishikawa, W. S. Hou, A. K. Giri, M. Masuda, G. B. Mohanty, L. Cao, C. P. Shen, P. Križan, Y. Sakai, Seok Kim, R. B. Garg, B. Bhuyan, I. Adachi, H. Aihara, K. Senyo, V. Babu, B. G. Fulsom, M. Salehi, T. Aushev, Jyoti Prakash Biswal, M. Takizawa, A. B. Kaliyar, T. E. Browder, Y. Iwasaki, Y. J. Kwon, M. Uchida, John Yelton, L. K. Li, M. Iwasaki, Z. Doležal, J. Schueler, Z. S. Stottler, G. Schnell, T. Iijima, T. Ferber, E. Won, D. Y. Kim, O. Schneider, D. Liventsev, B. G. Cheon, K. Inami, J. F. Strube, V. Gaur, V. Savinov, E. Solovieva, J. Libby, F. Tenchini, M. Nakao, H. Atmacan, G. S. Varner, M. Z. Wang, J. MacNaughton, Jihwa Lee, H. Ono, K. Kinoshita, S. Ogawa, U. Tamponi, R. Itoh, J. Haba, T. Sumiyoshi, Sudhanwa Patra, S. Nishida, Shih-Chang Lee, D. Kotchetkov, A. Rostomyan, Jia-ju Zhang, P. Wang, P. Goldenzweig, S. Korpar, Z. P. Zhang, V. Chekelian, S. Sandilya, Y. Seino, M. Merola, T. Sanuki, Massimo Berger, R. Van Tonder, B. K. Pal, N. K. Nisar, Shoichi Watanuki, M. Starič, S. Eidelman, S. Pardi, J. G. Shiu, R. Ayad, P. Pakhlov, E. Prencipe, S. Jia, S. Uno, C. Schwanda, S. Cunliffe, H. Hayashii, C. Kiesling, Phillip Urquijo, Y. Guan, C. H. Kim, D. M. Asner, A. Bozek, Y. B. Li, C. MacQueen, D. Matvienko, R. Kroeger, M. E. Sevior, A. J. Schwartz, M. Bračko, C. H. Wang, Seokhee Park, Tao Luo, K. Tanida, S. Paul, L. Li Gioi, M. Campajola, T. Uglov, V.N. Zhilich, D. Cinabro, H. Kichimi, H. Ye, K. Miyabayashi, I. Badhrees, M. Nayak, N. Gabyshev, D. Červenkov, W. Sutcliffe, Y. Onuki, Ya-Qiu Jin, J. E. Fast, V. M. Aulchenko, D. Dossett, T. Matsuda, A. Garmash, T. Bilka, M. Watanabe, V. Bansal, A. Vinokurova, P. K. Behera, P. Krokovny, K. Cho, D. Epifanov, V. Bhardwaj, T. K. Pedlar, Victoria Zhukova, A. Chen, K. Chilikin, R. Pestotnik, Y. Yusa, K. K. Joo, T. V. Dong, Y. Choi, K. J. Nath, T. Hara, and Andrey Sokolov
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Resonance, 01 natural sciences, Belle experiment, Luminosity, Baryon, KEKB, 0103 physical sciences, 010306 general physics, Bar (unit)
Abstract: We report a search for the charmless baryonic decay $B^0\to p\bar{p}\pi^0$ with a data sample corresponding to an integrated luminosity of 711~$\rm fb^{-1}$ containing $(772\pm 10)\times 10^6$ $B^0\bar{B}^0$ pairs. The data was collected by the Belle experiment running on the $\Upsilon(4S)$ resonance at the KEKB $e^+e^-$ collider. We measure a branching fraction $\mathcal{B}(B^0\to p\bar{p}\pi^0)= (5.0\pm1.8\pm0.6 )\times 10^{-7}$, where the first uncertainty is statistical and the second is systematic. The signal has a significance of 3.1 standard deviations and constitutes the first evidence for this decay mode. We also search for the intermediate two-body decays $B^{0}\to\Delta^+\bar{p}$ and $B^0\to\bar{\Delta}^-p$, and set an upper limit on the branching fraction: $\mathcal{B}(B^0\to \Delta^+\bar{p})+\mathcal{B}(B^0\to\bar{\Delta}^-p)
Published: 2019
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18. Search for the B→Y(4260)K , Y(4260)→J/ψπ+π− decays

Author: M. Takizawa, Takuro Sanuki, Pavel Krokovny, Y. Iwasaki, V.N. Zhilich, Y. J. Kwon, R. Mussa, S. Cunliffe, P. C. Lu, H. B. Jeon, Leo Piilonen, O. Schneider, D. Joffe, B. G. Fulsom, Seongbae Yang, S. Nishida, K. Trabelsi, A. Ishikawa, Vladimir Popov, G. Pakhlova, Y. Seino, P. K. Resmi, C. P. Shen, Seok Kim, P. Križan, C.-L. Hsu, N. Gabyshev, D. Červenkov, Y. B. Li, M. Nayak, M. Uchida, Victoria Zhukova, C. Z. Yuan, L. K. Li, C. H. Li, Z. P. Zhang, V. Babu, D. Liventsev, K. Miyabayashi, B. G. Cheon, G. Schnell, A. Chen, E. Prencipe, Andrey Sokolov, X. L. Wang, G.V. Russo, S. Sandilya, J. Haba, M. Sumihama, K. Nishimura, Motoki Iwasaki, Z. Drásal, V. V. Zhulanov, K. K. Joo, Peter Kodys, W. W. Jacobs, S. Korpar, Sudhanwa Patra, T. Matsuda, R. Itoh, R. Van Tonder, J. K. Ahn, W. S. Hou, N. Dash, Seema Bahinipati, T. V. Dong, Y. Choi, K. J. Nath, B. K. Pal, A. Rostomyan, T. Kuhr, P. Wang, S. Di Carlo, T. K. Pedlar, Semen Eidelman, R. B. Garg, Kiyoshi Tanida, J. G. Shiu, Y. Sakai, Tagir Aushev, Y. Onuki, T. Julius, A. Garmash, H. Miyata, John Yelton, Z. Doležal, Jyoti Prakash Biswal, V. Bansal, Bo Wang, J. B. Kim, V. M. Aulchenko, A. B. Kaliyar, M. Bračko, K. Chilikin, M. Merola, J. K. Lee, K. Senyo, A. Bobrov, V. Bhardwaj, T. Kawasaki, Rahul Kumar, J. Schueler, T. Sumiyoshi, H. E. Cho, M. Nakao, C. Beleño, J. B. Singh, Shih-Chang Lee, S. K. Choi, E. Won, J. MacNaughton, V.E. Shebalin, R. Pestotnik, S. Jia, A. Bozek, P. Pakhlov, H. Aihara, Kevin Varvell, J. H. Yin, A. K. Giri, Y. Jin, V. Gaur, O. Grzymkowska, C. H. Wang, M. Masuda, S. Paul, B. Golob, T. Mori, J. E. Fast, Y. Usov, G. B. Mohanty, J. S. Lange, L. Cao, G. Varner, T. Bilka, S. Al Said, M. Watanabe, L. Li Gioi, S. Uno, C. Schwanda, T.-A. Shibata, H. Ye, D. Cinabro, K. Prasanth, D. Kotchetkov, E. Solovieva, K. Inami, M. Z. Wang, K. Kinoshita, H. Hayashii, R. Ayad, K. Cho, Iki Adachi, Doo Young Kim, M. Salehi, H. Ono, R. Mizuk, S. Pardi, Y. Unno, M. Starič, R. Kroeger, J. Libby, D. M. Asner, M. E. Sevior, K. Hayasaka, G. Inguglia, Z. S. Stottler, Tao Luo, S. Ogawa, F. Tenchini, H. Kichimi, E. Waheed, T. Uglov, and D. Matvienko
Subjects: Physics, Particle physics, KEKB, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Invariant mass, 010306 general physics, 01 natural sciences
Abstract: We report the results of a search for the B→Y(4260)K, Y(4260)→J/ψπ+π- decays. This study is based on a data sample corresponding to an integrated luminosity of 711 fb-1, collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We investigate the J/ψπ+π- invariant mass distribution in the range 4.0 to 4.6 GeV/c2 using both B+→J/ψπ+π-K+ and B0→J/ψπ+π-KS0 decays. We find excesses of events above the background levels, with significances of 2.1 and 0.9 standard deviations for charged and neutral B→Y(4260)K decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, B(B+→Y(4260)K+)×B(Y(4260)→J/ψπ+π-)
Published: 2019
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19. First Measurements of Absolute Branching Fractions of the Ξc0 Baryon at Belle

Author: S. Jia, C. H. Wang, H. Ye, S. Pardi, V.N. Zhilich, T. Aushev, A. K. Giri, G.V. Russo, G. Schnell, K. Tanida, M. Niiyama, Luka Santelj, V. Zhukova, Y. Onuki, T. Iijima, J. G. Shiu, M. Masuda, R. Mussa, Rocky Bala Garg, T. Bilka, Jyoti Prakash Biswal, K. Miyabayashi, I. Badhrees, X. L. Wang, A. Ishikawa, V. Gaur, M. Nakao, M. Takizawa, A. Kuzmin, Phillip Urquijo, R. Van Tonder, L. Cao, I. Adachi, P. Križan, Soumen Paul, S. Eidelman, John Yelton, Z. Doležal, Bingran Wang, J. H. Yin, Jihwa Lee, Y. B. Li, T. Matsuda, W. Sutcliffe, S. Uno, J. B. Kim, M. Merola, S. Cunliffe, K. K. Joo, Massimo Berger, C.-L. Hsu, Shih-Chang Lee, E. Prencipe, A. Bozek, Y. Iwasaki, Y. J. Kwon, G. B. Mohanty, C. Z. Yuan, E. Solovieva, Y. Ban, K. Senyo, Vikas Bansal, Y. Yusa, E. Nakano, M. Uchida, D. Joffe, M. Salehi, O. Schneider, L. K. Li, S. H. Kim, P. Krokovny, V. Bhardwaj, K. Cho, B. Shwartz, H. J. Kim, K. Trabelsi, G. S. Varner, M. Nayak, Seokhee Park, L. E. Piilonen, B. Bhuyan, T. V. Dong, Y. Choi, K. J. Nath, T. A. Shibata, K. Inami, H. Kichimi, A. J. Schwartz, T. Uglov, C. P. Shen, J. Libby, D. M. Asner, K. Hayasaka, B. G. Fulsom, B. Pal, K. T. Kim, P. Pakhlov, Y. Sakai, P. L. Wang, M. Sumihama, M. Iwasaki, B. G. Cheon, H. Miyata, Peter Kodys, W. W. Jacobs, S. Al Said, V. Savinov, D. Liventsev, R. Ayad, James E. Fast, Vladimir Popov, T. K. Pedlar, Y. Jin, J. Schueler, E. Won, Z. P. Zhang, S. K. Choi, R. Kroeger, M. E. Sevior, P. Goldenzweig, S. Sandilya, N. Gabyshev, D. Červenkov, S. Di Carlo, S. Nishida, J. MacNaughton, Seongbae Yang, M. Z. Wang, K. Kinoshita, R. Itoh, D. Y. Kim, M. Starič, T. Kumita, G. Karyan, G. Pakhlova, A. Bondar, F. Tenchini, S. Korpar, D. Kotchetkov, B. Grube, R. Mizuk, T. Sumiyoshi, C. Schwanda, H. Ono, T. Sanuki, Y. Seino, C. Beleño, M. Bračko, Y. Tao, H. Aihara, Y. Unno, Takeo Kawasaki, H. Hayashii, D. Cinabro, M. Lubej, G. Inguglia, K. Chilikin, L. Li Gioi, A. Garmash, Daniel Greenwald, R. Pestotnik, Z. Drásal, and A. Chen
Subjects: 0103 physical sciences, General Physics and Astronomy, Library science, 010306 general physics, 01 natural sciences
Abstract: We thank Professor Fu-sheng Yu for useful discussions and comments. Y. B. L. acknowledges the support from the China Scholarship Council (201706010043). We thank the KEKB group for excellent operation of the accelerator; the KEK cryogenics group for efficient solenoid operations; and the KEK computer group, the NII, and PNNL/EMSL for valuable computing and SINET5 network support. We acknowledge support from MEXT, JSPS and Nagoya’s TLPRC (Japan); ARC (Australia); FWF (Austria); the National Natural Science Foundation of China under Contracts No. 11475187, No. 11521505, No. 11575017, No. 11761141009; the CAS Center for Excellence in Particle Physics (CCEPP); MSMT (Czechia); CZF, DFG, EXC153, and VS (Germany); DST (India); INFN (Italy); MOE, MSIP, NRF, RSRI, FLRFAS project and GSDC of KISTI and KREONET/GLORIAD (Korea); MNiSW and NCN (Poland); MSHE, Agreement No. 14.W03.31.0026 (Russia); ARRS (Slovenia); IKERBASQUE (Spain); SNSF (Switzerland); MOE and MOST (Taiwan); and DOE and NSF (U.S.).
Published: 2019
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20. Observation of Ξ(1620)0 and Evidence for Ξ(1690)0 in Ξc+→Ξ−π+π+ Decays

Author: V.N. Zhilich, Y. Kato, S. Al Said, K. T. Kim, K. Miyabayashi, I. Badhrees, M. Merola, J. K. Ahn, J. G. Shiu, H. Park, A. Bozek, Andrey Sokolov, R. Mizuk, S. K. Choi, C. Kiesling, Y. Choi, K. J. Nath, H. Ono, K. Chilikin, Phillip Urquijo, C. Beleño, Y. B. Li, James E. Fast, K. Senyo, Semen Eidelman, P. Pakhlov, G. Schnell, D. Epifanov, M. Iwasaki, S. Hirose, Iki Adachi, M. Takizawa, B. G. Cheon, S. Uno, C. Schwanda, S. Nishida, M. Sumihama, N. Taniguchi, Vikas Bansal, A. Garmash, S. Sandilya, N. K. Nisar, B. Pal, C. P. Shen, L. E. Piilonen, E. Nakano, M. Uchida, John Yelton, Z. Doležal, L. K. Li, X. L. Wang, V. Bhardwaj, C. Van Hulse, Z. Natkaniec, Z. Drásal, J. B. Kim, T. K. Pedlar, Soumen Paul, V. Babu, M. Niiyama, M. Starič, Z. P. Zhang, V. Chekelian, T. Aushev, V. Gaur, G. S. Varner, S. Korpar, Massimo Berger, D. Kotchetkov, Eleonora Guido, S. E. Vahsen, T. Nakano, T. Julius, R. Itoh, Shih-Chang Lee, C. Z. Yuan, Peter Kodys, W. W. Jacobs, K. K. Joo, B. Bhuyan, A. B. Kaliyar, R. Ayad, H. K. Moon, J. S. Lange, B. G. Fulsom, Seema Bahinipati, G. Pakhlova, R. Mussa, G. B. Mohanty, H. B. Jeon, T. Matsuda, M. Gelb, Y. Iwasaki, Y. J. Kwon, D. Y. Kim, A. Ishikawa, F. Tenchini, V. Savinov, O. Schneider, S. Di Carlo, Jyoti Prakash Biswal, G. Karyan, T. Sumiyoshi, M. Nakao, A. Chen, Y. Yusa, S. Zakharov, P. Križan, G. Bonvicini, T. V. Dong, Martin Ritter, T. A. Shibata, H. Miyata, J. F. Strube, V. Vorobyev, T. Sanuki, E. Won, A. K. Giri, V. Zhukova, S. H. Kim, P. Krokovny, Rakesh Kumar, R. Pestotnik, M. Masuda, P. L. Wang, K. H. Kang, K. Cho, H. Atmacan, S. Cunliffe, L. Li Gioi, T. Bilka, G.V. Russo, M. Watanabe, V.E. Shebalin, T. E. Browder, U. Tamponi, W. S. Hou, T. Mori, H. Aihara, S. Jia, C. H. Wang, H. Ye, Tara Nanut, T. Uglov, A. Kuzmin, M. Bračko, Rocky Bala Garg, Eberhard Widmann, A. M. Bakich, N. Dash, B.A. Shwartz, N. Gabyshev, D. Červenkov, D. Liventsev, Vladimir Zhulanov, Y. Jin, R. Kroeger, M. E. Sevior, I. S. Lee, P. Goldenzweig, Tao Luo, K. Tanida, Bingran Wang, D. Matvienko, D. Cinabro, M. Lubej, G. Inguglia, E. Solovieva, J. Haba, A. Vossen, Somnath Choudhury, S. Pardi, Frank Simon, Vladimir Popov, J. Libby, D. M. Asner, K. Hayasaka, Y. Seino, Shoichi Watanuki, Dipak Kumar Sahoo, Luka Santelj, K. Inami, M. Z. Wang, K. Kinoshita, T. Czank, and H. Hayashii
Subjects: Physics, Particle physics, Electron–positron annihilation, Quark model, Hyperon, General Physics and Astronomy, Strangeness, 01 natural sciences, Baryon, KEKB, 0103 physical sciences, Pi, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: We report the first observation of the doubly-strange baryon $\Xi(1620)^0$ in its decay to $\Xi^-\pi^+$ via $\Xi_c^+ \rightarrow \Xi^- \pi^+ \pi^+$ decays based on a $980\,{\rm fb}^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The mass and width are measured to be 1610.4 $\pm$ 6.0 (stat) $^{+5.9}_{-3.5}$ (syst)~MeV$/c^2$ and 59.9 $\pm$ 4.8 (stat) $^{+2.8}_{-3.0}$ (syst)~MeV, respectively. We obtain 4.0$\sigma$ evidence of the $\Xi(1690)^0$ with the same data sample. These results shed light on the structure of hyperon resonances with strangeness $S=-2$.
Published: 2019
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21. Measurements of branching fraction and direct CP asymmetry in B±→KS0KS0K± and a search for B±→KS0KS0π±

Author: S. Nishida, Jyoti Prakash Biswal, X. L. Wang, G. Schnell, T. Iijima, J. G. Shiu, J. K. Lee, V. Gaur, V. Chekelian, Phillip Urquijo, Deepak Kumar Sahoo, M. Nakao, W. Ostrowicz, R. Van Tonder, B. K. Pal, S. Jia, P. Goldenzweig, T. Matsuda, K. K. Joo, J. E. Fast, T. Bilka, T. Kuhr, J. MacNaughton, J. C. Dingfelder, S. Sandilya, D. Cinabro, Y. B. Li, M. Z. Wang, K. Kinoshita, O. Grzymkowska, C. H. Wang, S. Paul, H. B. Jeon, Seema Bahinipati, D. M. Asner, L. Li Gioi, T. V. Dong, A. Garmash, Y. Choi, K. J. Nath, Daniel Greenwald, M. Starič, P. Krokovny, S. Eidelman, T. Hara, K. Cho, Kevin Varvell, H. Ye, K. Prasanth, J. H. Yin, V. Bansal, F. Tenchini, H. Ono, A. M. Bakich, M. Iwasaki, A. Bozek, Somnath Choudhury, D. Matvienko, B. G. Cheon, A. Ishikawa, T. Sumiyoshi, D. Epifanov, Z. Natkaniec, Soumya D. Mohanty, Y. Tao, T. Mori, H. Aihara, P. K. Behera, R. B. Garg, Y. Usov, H. Hayashii, B. G. Fulsom, J. Haba, N. Gabyshev, D. Červenkov, Martin Ritter, Dmytro Levit, T. Sanuki, Z. P. Zhang, V. Bhardwaj, T. K. Pedlar, Victoria Zhukova, Hyunyong Kim, C. H. Kim, C. H. Li, S. Pardi, S. K. Choi, A. Chen, B. Golob, N. K. Nisar, S. Korpar, V. Savinov, Seongbae Yang, T.-A. Shibata, S. Cunliffe, T. D. Kimmel, P. Križan, N. Dash, Y. Unno, K. Chilikin, R. Kroeger, R. Ayad, Sudhanwa Patra, A. B. Kaliyar, Kohei Ogawa, M. E. Sevior, I. S. Lee, Y. Iwasaki, Y. J. Kwon, Jihwa Lee, L. E. Piilonen, G. Pakhlova, K. Inami, R. Kulasiri, Z. S. Stottler, O. Schneider, M. Merola, J. Schueler, Y. Yusa, R. Pestotnik, M. Takizawa, Kiyoshi Tanida, C. Kiesling, J. K. Ahn, Tao Luo, Z. Drásal, M. Sumihama, K. Trabelsi, M. Bračko, E. Won, J. Libby, J. Kahn, C. P. Shen, A. J. Schwartz, Seok Kim, John Yelton, Z. Doležal, I. Adachi, V. Babu, T. Aushev, T. Ferber, D. Y. Kim, M. Salehi, Y. Seino, V.N. Zhilich, H. Kichimi, K. Miyabayashi, I. Badhrees, W. Sutcliffe, G.V. Russo, Y. Onuki, W. S. Hou, M. Gelb, K. Nishimura, V. M. Aulchenko, Shih-Chang Lee, P. K. Resmi, H. Miyata, Bo Wang, C.-L. Hsu, K. Hayasaka, A. Bobrov, H. E. Cho, A. Frey, Peter Kodys, W. W. Jacobs, S. Di Carlo, G. Karyan, R. Mizuk, C. Beleño, E. Prencipe, S. Al Said, S. Uno, C. Schwanda, Rahul Kumar, A. K. Giri, G. B. Mohanty, M. Nayak, L. Cao, M. Uchida, L. K. Li, G. S. Varner, R. Itoh, A. Rostomyan, P. Wang, D. Joffe, A. Vossen, K. Senyo, Frank Simon, T. Kawasaki, Vladimir Popov, D. Kotchetkov, A. Rabusov, Y. Sakai, E. Solovieva, T. Uglov, A. Kuzmin, S. Ogawa, and E. Waheed
Subjects: Physics, Meson, 010308 nuclear & particles physics, Branching fraction, media_common.quotation_subject, Hadron, Analytical chemistry, Resonance, 01 natural sciences, Asymmetry, law.invention, KEKB, law, 0103 physical sciences, B meson, 010306 general physics, Collider, media_common
Abstract: We study charmless hadronic decays of charged B mesons to the final states KS0KS0K± and KS0KS0π± using a 711 fb-1 data sample that contains 772×106 BB¯ pairs and was collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. For B±→KS0KS0K±, the measured branching fraction and direct CP asymmetry are [10.42±0.43(stat)±0.22(syst)]×10-6 and [+1.6±3.9(stat)±0.9(syst)]%, respectively. In the absence of a statistically significant signal for B±→KS0KS0π±, we obtain a 90% confidence-level upper limit on its branching fraction as 8.7×10-7.
Published: 2019
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22. Measurements of isospin asymmetry and difference of directCPasymmetries in inclusiveB→Xsγdecays

Author: V. Babu, T. Aushev, Jyoti Prakash Biswal, T. Ferber, T. Matsuda, S. Uno, G. Bonvicini, G. Schnell, S. H. Kim, P. Krokovny, Soumen Paul, Rakesh Kumar, K. Cho, S. Okuno, D. Epifanov, H. Ono, T. Kuhr, B. Pal, R. Mizuk, T. K. Pedlar, Z. P. Zhang, H. B. Jeon, Y. Guan, K. K. Joo, Kevin Varvell, G. B. Mohanty, A. Ishikawa, M. Nakao, R. Van Tonder, Eleonora Guido, P. Pakhlov, T. Mori, H. Aihara, Y. Yusa, Tao Luo, K. Tanida, E. Widmann, J. Libby, D. M. Asner, Toru Iijima, K. Hayasaka, A. Vossen, V. Gaur, T. V. Dong, C. Kiesling, Y. Choi, K. J. Nath, Vikas Bansal, H. Park, A. Bozek, L. Santelj, O. Seon, J. G. Shiu, Y. Seino, Y. Sakai, I. Adachi, M. Bračko, Takeo Kawasaki, Shoichi Watanuki, C. Van Hulse, Bingran Wang, Kohei Ogawa, L. E. Piilonen, D. Cinabro, N. Taniguchi, J. B. Kim, W. Sutcliffe, A. M. Bakich, M. Lubej, B. Bhuyan, Y. B. Li, T. E. Browder, G. Inguglia, V. Zhukova, P. Chang, K. Inami, Tara Nanut, T. Uglov, N. Gabyshev, D. Červenkov, T. Julius, Shih-Chang Lee, A. Frey, M. Iwasaki, A. Bobrov, E. Solovieva, B. G. Cheon, V.E. Shebalin, Somnath Choudhury, R. Ayad, M. Z. Wang, K. Kinoshita, J. Haba, Andrey Sokolov, S. Nishida, V. Savinov, R. Itoh, S. Al Said, D. Kotchetkov, A. Kuzmin, D. Y. Kim, Jochen Dingfelder, B.A. Shwartz, S. Cunliffe, M. Takizawa, Samo Stanič, S. Korpar, K. Nishimura, S. Ogawa, I. Jaegle, M. Merola, D. Liventsev, James E. Fast, Vladimir Zhulanov, Y. Jin, R. Kroeger, I. S. Lee, K. Senyo, P. Goldenzweig, C. Schwanda, H. Hayashii, F. Tenchini, T. Sumiyoshi, Martin Ritter, P. Križan, Massimo Berger, E. Prencipe, K. Chilikin, J. Schueler, E. Won, R. Pestotnik, J. H. Yin, G.V. Russo, W. S. Hou, M. Uchida, L. K. Li, V. Bhardwaj, G. S. Varner, A. Rostomyan, P. Wang, B. G. Fulsom, V.N. Zhilich, S. E. Vahsen, K. Miyabayashi, I. Badhrees, Y. Iwasaki, Y. J. Kwon, O. Schneider, S. Sandilya, A. J. Schwartz, M. Starič, M. Gelb, W. Ostrowicz, Peter Kodys, W. W. Jacobs, S. Di Carlo, G. Karyan, A. K. Giri, S. Jia, M. Masuda, L. Cao, C. Beleño, Yoshinobu Unno, C. H. Wang, A. Garmash, S. Zakharov, H. Ye, A. Zupanc, T. Bilka, G. Pakhlova, M. Watanabe, M. Niiyama, L. Li Gioi, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, and S.I. Eidelman
Subjects: Physics, Particle physics, Annihilation, Meson, 010308 nuclear & particles physics, Branching fraction, media_common.quotation_subject, Zero (complex analysis), 01 natural sciences, Asymmetry, KEKB, Isospin, 0103 physical sciences, Production (computer science), 010306 general physics, media_common
Abstract: We report measurements of isospin asymmetry $\Delta_{0-}$ and difference of direct $CP$ asymmetries $\Delta A_{CP}$ between charged and neutral $B \to X_s \gamma$ decays. This analysis is based on the data sample containing $772 \times 10^6 B\bar{B}$ pairs that was collected with the Belle detector at the KEKB energy-asymmetric $e^+ e^-$ collider. Using a sum-of-exclusive technique with invariant $X_s$ mass up to 2.8~GeV/$c^2$, we obtain $\Delta_{0-} = \bigl[-0.48 \pm 1.49 {\rm (stat.)} \pm 0.97 {\rm (syst.)} \pm 1.15 {(f_{+-}/f_{00})}\bigr]$\% and $\Delta A_{CP} = \bigl[+3.69 \pm 2.65 {\rm (stat.)} \pm 0.76{\rm (syst.)}\bigr]$\%, where the last uncertainty for $\Delta_{0-}$ is due to the uncertainty on the production ratio of $B^+B^-$ to $B^0\bar{B}^0$ in $\Upsilon(4S)$ decays. The measured value of $\Delta_{0-}$ is consistent with zero, allowing us to constrain the resolved photon contribution in the $B \to X_s \gamma$, and improve the branching fraction prediction. The result for $\Delta A_{CP}$ is consistent with the prediction of the SM. We also measure the direct $CP$ asymmetries for charged and neutral $B \to X_s \gamma$ decays. All the measurements are the most precise to date.
Published: 2019
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23. Observation of B+→pΛ¯K+K− and B+→p¯ΛK+K+

Author: D. Cinabro, M. Lubej, G. Inguglia, G. Schnell, T. Iijima, P. Chang, Somnath Choudhury, T. Kuhr, H. Miyata, M. Uchida, Bo Wang, S. Nishida, J. E. Fast, P. Goldenzweig, M. Sumihama, L. K. Li, D. Liventsev, S. Pardi, J. K. Ahn, K. Hayasaka, X. L. Wang, V. Chekelian, S. Sandilya, Andrey Sokolov, Y. Sakai, S. Okuno, D. Kotchetkov, M. Starič, A. Rabusov, T. Bilka, R. Kroeger, M. E. Sevior, I. S. Lee, G. S. Varner, R. Van Tonder, B. K. Pal, Eleonora Guido, H. Ono, V. Babu, M. Watanabe, E. Solovieva, D. Joffe, J. Libby, A. Vossen, Frank Simon, Vladimir Popov, R. Itoh, A. Rostomyan, S. Eidelman, T. Matsuda, G. Bonvicini, L. Li Gioi, Shih-Chang Lee, Y. Seino, P. Pakhlov, S. E. Vahsen, A. Vinokurova, T. Aushev, H. Ye, Shoichi Watanuki, V.N. Zhilich, H. Park, A. Bozek, P. Krokovny, M. Merola, A. B. Kaliyar, C. B. Van Hulse, M. Z. Wang, K. Kinoshita, Y. Iwasaki, Y. J. Kwon, D. Matvienko, K. Cho, V. V. Zhulanov, O. Schneider, B. Shwartz, U. Tamponi, T. Ferber, R. B. Garg, B. Bhuyan, K. Miyabayashi, I. Badhrees, D. Epifanov, Shigeki Hirose, M. Takizawa, S. Jia, E. Won, B. G. Fulsom, T. E. Browder, A. Garmash, V. Bansal, A. K. Giri, W. Sutcliffe, Z. Doležal, C. H. Wang, V. Savinov, P. K. Behera, H. Atmacan, S. Paul, A. Zupanc, Y. Unno, J. B. Kim, Tara Nanut, M. Gelb, J. H. Yin, J. G. Shiu, R. Ayad, K. T. Kim, T. Uglov, J. B. Singh, S. K. Choi, Massimo Berger, N. K. Nisar, Tao Luo, K. Tanida, V. M. Aulchenko, H. K. Moon, J. S. Lange, M. Masuda, G. B. Mohanty, C. Z. Yuan, E. Prencipe, G.V. Russo, S. Cunliffe, K. Senyo, W. S. Hou, I. Adachi, V. Vorobyev, C. P. Shen, H. Hayashii, Seok Kim, M. Salehi, Hyunyong Kim, T. Kawasaki, Victoria Zhukova, T.-A. Shibata, A. M. Bakich, H. Kichimi, R. Mussa, P. C. Lu, H. B. Jeon, L. Cao, A. Chen, A. Kuzmin, M. C. Chang, Phillip Urquijo, K. Inami, S. Ogawa, Z. Drásal, C.-L. Hsu, A. Ishikawa, Y. B. Li, D. M. Asner, K. Chilikin, H. Ozaki, Peter Kodys, W. W. Jacobs, P. Križan, F. Tenchini, S. Di Carlo, N. Gabyshev, D. Červenkov, R. Mizuk, R. Pestotnik, C. Beleño, M. Iwasaki, T. Sumiyoshi, B. G. Cheon, Martin Ritter, T. Sanuki, Eberhard Widmann, L. E. Piilonen, J. Haba, G. Pakhlova, J. F. Strube, R. Kulasiri, S. Korpar, D. Y. Kim, T. Julius, N. Dash, R. Chistov, K. K. Joo, C. Kiesling, T. V. Dong, M. Bračko, Y. Choi, K. J. Nath, L. Santelj, Z. Natkaniec, Jyoti Prakash Biswal, V. Gaur, S. Al Said, M. Nakao, S. Uno, C. Schwanda, V. Bhardwaj, T. K. Pedlar, Y.-T. Lai, M. Nayak, T. Mori, H. Aihara, Ya-Qiu Jin, Y. Usov, Z. P. Zhang, and V.E. Shebalin
Subjects: Physics, KEKB, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, Resonance, 010306 general physics, Lambda, 01 natural sciences, Bar (unit)
Abstract: We report the study of B+→pΛ¯K+K- and B+→p¯ΛK+K+ decays using a 772×106 BB¯ pair data sample recorded on the ϒ(4S) resonance with the Belle detector at KEKB. The following branching fractions are measured: B(B+→pΛ¯K+K-)=(4.10-0.43+0.45±0.50)×10-6, B(B+→p¯ΛK+K+)=(3.70-0.37+0.39±0.44)×10-6, B(ηc→pΛ¯K-+c.c.)=(2.83-0.34+0.36±0.35)×10-3 and B(B+→pΛ¯ϕ)=( 7.95±2.09±0.77)×10-7, where c.c. denotes the corresponding charge-conjugation process. The intermediate resonance decays are excluded in the four-body decay measurements. We also find evidence for B(ηc→Λ(1520)Λ¯+c.c.)=(3.48±1.48±0.46)×10-3 and B(B+→Λ(1520)Λ¯K+)=( 2.23±0.63±0.25)×10-6. No significant signals are found for J/ψ→Λ(1520)Λ¯+c.c. and B+→Λ¯(1520)ΛK+; we set the 90% confidence level upper limits on their decay branching fractions as
Published: 2019
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24. Observation of Transverse Λ/Λ¯ Hyperon Polarization in e+e− Annihilation at Belle

Author: Vikas Bansal, I. Badhrees, H. Aihara, C. Van Hulse, S. Hirose, A. M. Bakich, Z. Natkaniec, A. Zupanc, T. Matsuda, S. Uno, N. Gabyshev, D. Červenkov, T. Sumiyoshi, S. E. Vahsen, G. Pakhlova, Rocky Bala Garg, Eberhard Widmann, R. Mussa, H. B. Jeon, J. K. Ahn, M. Niiyama, T. Mori, Y. Iwasaki, Y. J. Kwon, T. A. Shibata, H. Miyata, Y. Usov, G. Bonvicini, A. Ishikawa, Y. Seino, M. Nakao, Prafulla Kumar Behera, P. Križan, C. Beleño, M. Iwasaki, O. Schneider, Jyoti Prakash Biswal, M. Z. Wang, K. Kinoshita, G. Schnell, D. Matvienko, Byung Gu Cheon, I. Jaegle, R. Ayad, T. Iijima, L. Li Gioi, T. Julius, B. G. Fulsom, S. Al Said, A. Vinokurova, J. G. Shiu, H. Park, K. Cho, W. Sutcliffe, Yoshinobu Unno, A. Bozek, Vladimir Popov, Shih-Chang Lee, G. B. Mohanty, J. F. Strube, T. Kuhr, K. Senyo, S. H. Kim, Massimo Berger, R. Seidl, R. Itoh, B. Bhuyan, C. Kiesling, M. Nayak, Dipak Kumar Sahoo, Peter Kodys, C. Z. Yuan, W. W. Jacobs, T. E. Browder, K. H. Kang, S. Sandilya, Y. Yusa, S. Korpar, G.V. Russo, S. Cunliffe, H. J. Kim, D. Joffe, A. Bobrov, M. Bračko, E. Prencipe, M. Uchida, M. Gelb, L. K. Li, S. Di Carlo, T. K. Pedlar, V. Savinov, M. Salehi, N. K. Nisar, M. Takizawa, A. Garmash, Y. Guan, Andrey Sokolov, D. Epifanov, A. K. Giri, A. Chen, V. Bhardwaj, B. Pal, Z. P. Zhang, K. Inami, W. S. Hou, M. Masuda, M. Merola, C. Schwanda, Iki Adachi, James E. Fast, Doo Young Kim, D. Cinabro, K. Chilikin, V. Babu, T. V. Dong, L. Cao, Y. Choi, K. J. Nath, Semen Eidelman, X. L. Wang, Tagir Aushev, V. Chekelian, L. Santelj, J. B. Kim, V. Vorobyev, R. Van Tonder, Eleonora Guido, Phillip Urquijo, A. Rostomyan, P. Wang, T. Ferber, E. Won, V.E. Shebalin, Y. Sakai, R. Pestotnik, H. Hayashii, Z. Drásal, Y. B. Li, V. Gaur, J. H. Yin, V.M. Aulchenko, G. Varner, Ken Suzuki, Soumen Paul, H. Ono, R. Mizuk, H. Atmacan, B. Golob, H. K. Moon, J. S. Lange, Takuro Sanuki, Kiyoshi Tanida, R. Kulasiri, K. K. Joo, Pavel Krokovny, M. Sumihama, John Yelton, Z. Doležal, K. T. Kim, T. Bilka, S. K. Choi, C. P. Shen, Tara Nanut, T. Uglov, H. Ye, A. Kuzmin, S. Ogawa, F. Tenchini, U. Tamponi, E. Waheed, S. Jia, J. Libby, D. M. Asner, K. Hayasaka, Y. Jin, C. H. Wang, Takeo Kawasaki, Shoichi Watanuki, S. Pardi, S. Okuno, M. Lubej, G. Inguglia, V. Zhukova, P. Chang, J. Haba, P. Pakhlov, Tao Luo, S. Nishida, Bingran Wang, A. Rabusov, K. Adamczyk, Jochen Dingfelder, M. Starič, D. Liventsev, Vladimir Zhulanov, R. Kroeger, M. E. Sevior, I. S. Lee, P. Goldenzweig, N. Dash, D. Kotchetkov, Leo Piilonen, A. Vossen, O. Seon, Frank Simon, E. Solovieva, and V.N. Zhilich
Subjects: Physics, Particle physics, Annihilation, Electron–positron annihilation, Hyperon, General Physics and Astronomy, Polarization (waves), Lambda, 01 natural sciences, Belle experiment, Nuclear physics, Transverse plane, 0103 physical sciences, Fragmentation function, 010306 general physics
Abstract: We report the first observation of the spontaneous polarization of Λ and Λ[over ¯] hyperons transverse to the production plane in e^{+}e^{-} annihilation, which is attributed to the effect arising from a polarizing fragmentation function. For inclusive Λ/Λ[over ¯] production, we also report results with subtracted feed-down contributions from Σ^{0} and charm. This measurement uses a dataset of 800.4 fb^{-1} collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV. We observe a significant polarization that rises with the fractional energy carried by the Λ/Λ[over ¯] hyperon.
Published: 2019
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25. Measurement of time-dependent CP violation in B0→KS0π0π0 decays

Author: S. Al Said, K. T. Kim, K. Chilikin, V.N. Zhilich, T. Matsuda, S. K. Choi, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, G.V. Russo, Y. Iwasaki, Y. J. Kwon, Y. Guan, S. Uno, S.I. Eidelman, C. Schwanda, R. Pestotnik, Jyoti Prakash Biswal, A. Vossen, U. Tamponi, O. Seon, N. Dash, F. Tenchini, D. Kotchetkov, K. Miyabayashi, I. Badhrees, V. Gaur, G. B. Mohanty, V. Babu, T. Aushev, T. Sumiyoshi, Yoshinobu Unno, H. Atmacan, O. Schneider, S. H. Kim, Tao Luo, S. Jia, Rakesh Kumar, K. Tanida, Y. Yusa, G. Schnell, V. Vorobyev, T. Sanuki, K. H. Kang, M. Merola, B. Bhuyan, J. Libby, D. M. Asner, C. H. Wang, T. E. Browder, A. Chen, V.M. Aulchenko, L. Li Gioi, T. Kuhr, K. Hayasaka, M. Takizawa, Z. Drásal, J. H. Yin, S. Cunliffe, H. Ye, K. Senyo, N. K. Nisar, M. Z. Wang, K. Kinoshita, Vikas Bansal, Peter Kodys, W. W. Jacobs, Y. Seino, E. Nakano, D. Epifanov, B. Pal, T. K. Pedlar, Bingran Wang, C. Kiesling, Vladimir Popov, S. Di Carlo, B. Golob, S. Ogawa, M. Sumihama, C. Van Hulse, Z. P. Zhang, V. Savinov, D. Cinabro, H. K. Moon, A. K. Giri, S. Hirose, J. S. Lange, E. Waheed, J. G. Shiu, A. Garmash, T. Kawasaki, M. Lubej, G. Inguglia, M. Uchida, L. E. Piilonen, M. Masuda, Y. B. Li, L. K. Li, G. Pakhlova, V. Bhardwaj, C. P. Shen, Shih-Chang Lee, M. Iwasaki, M. Bračko, B. G. Cheon, Kohei Ogawa, G. S. Varner, E. Prencipe, K. Inami, E. Won, R. Itoh, A. J. Schwartz, D. Liventsev, L. Cao, Y. Ushiroda, S. Pardi, S. Korpar, Vladimir Zhulanov, A. Rostomyan, P. Wang, Y. Jin, R. Kroeger, B. G. Fulsom, H. Park, A. Bozek, Rocky Bala Garg, Kevin Varvell, M. E. Sevior, I. S. Lee, Tara Nanut, P. Goldenzweig, T. Uglov, H. Hayashii, H. Aihara, Y. Usov, J. Haba, K. Nishimura, James E. Fast, H. Ono, R. Mizuk, R. Ayad, Seema Bahinipati, D. Y. Kim, J. B. Kim, S. Sandilya, S. Nishida, A. M. Bakich, M. Starič, Soumen Paul, Z. Natkaniec, V. Chekelian, A. Ishikawa, R. Van Tonder, M. Nakao, P. Križan, K. K. Joo, D. Červenkov, T. V. Dong, Y. Choi, K. J. Nath, and Y. Sakai
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Resonance, 01 natural sciences, Belle experiment, law.invention, Amplitude, KEKB, law, 0103 physical sciences, CP violation, 010306 general physics, Collider
Abstract: We report a measurement of time-dependent CP violation in B0→KS0π0π0 decays using a data sample of 772×106 BB¯ pairs collected by the Belle experiment running at the ϒ(4S) resonance at the KEKB e+e- collider. This decay proceeds mainly via a b→sdd¯ “penguin” amplitude. The results are sin2ϕ1eff=0.92-0.31+0.27 (stat.) ±0.11 (syst.) and A=0.28±0.21 (stat.) ±0.04 (syst.), which are the most precise measurements of CP violation in this decay mode to date. The value for the CP-violating parameter sin2ϕ1eff is consistent with that obtained using decay modes proceeding via a b→cc¯s “tree” amplitude.
Published: 2019
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26. Search for the rare decay of B+→ℓ+νℓγ with improved hadronic tagging

Author: Victoria Zhukova, Y. Yusa, J. Gemmler, Eberhard Widmann, J. F. Strube, A. Chen, M. Nayak, M. Gelb, A. Rostomyan, X. L. Wang, G. Varner, B. G. Cheon, V. Chekelian, Ya-Qiu Jin, Jihwa Lee, R. Mizuk, R. Van Tonder, B. K. Pal, M. Takizawa, G. Schnell, S. Al Said, M. Merola, J. Haba, Z. Doležal, R. B. Garg, B. Bhuyan, B. G. Fulsom, W. Sutcliffe, T. Kuhr, V. Babu, K. Chilikin, C. Beleño, D. Y. Kim, J. H. Yin, A. Garmash, Daniel Greenwald, S. C. Lee, T. Ferber, Tagir Aushev, S. K. Choi, S. Uno, V. Savinov, C. Schwanda, Felix Metzner, D. Epifanov, N. K. Nisar, Samo Stanič, V. Bansal, J. G. Shiu, R. Pestotnik, J. S. Lange, K. K. Joo, P. Pakhlov, Phillip Urquijo, Pavel Krokovny, A. Frey, T. Uglov, P. K. Behera, V. V. Zhulanov, Yang Li, K. Senyo, T. Kawasaki, T. K. Pedlar, P. Goldenzweig, T. V. Dong, Y. Choi, Peter Kodys, W. W. Jacobs, K. J. Nath, T. Hara, L. Santelj, Jyoti Prakash Biswal, M. Uchida, F. Tenchini, C. Z. Yuan, W. S. Hou, J. Kahn, C. P. Shen, Semen Eidelman, Seok Kim, S. Sandilya, D. Liventsev, H. Miyata, E. Prencipe, R. Mussa, T. Sumiyoshi, P. C. Lu, G. Russo, V.N. Zhilich, S. Di Carlo, A. Ishikawa, M. Nakao, Martin Ritter, R. Itoh, P. Križan, A. B. Kaliyar, Florian Urs Bernlochner, P. Wang, C. Kiesling, K. Miyabayashi, I. Badhrees, Bo Wang, T. Sanuki, A. K. Giri, M. Starič, G. Pakhlova, S. Nishida, M. Masuda, R. Kulasiri, G. B. Mohanty, Z. Natkaniec, J. Schueler, E. Won, B. Shwartz, L. Cao, A. Bobrov, M. Bračko, H. Atmacan, N. Gabyshev, D. Červenkov, M. Sumihama, Motoki Iwasaki, S. Cunliffe, Y. Iwasaki, O. Schneider, J. K. Lee, V. Gaur, Deepak Kumar Sahoo, M. Niiyama, J. Libby, J. MacNaughton, Kevin Varvell, L. Li Gioi, H. Ye, Y. Tao, T. Mori, H. Aihara, J. E. Fast, Z. P. Zhang, M. Watanabe, S. Jia, T.-A. Shibata, C. H. Wang, S. Paul, K. Inami, M. Mrvar, Leo Piilonen, D. Joffe, H. Hayashii, Hyunyong Kim, S. Zakharov, Seongbae Yang, M. Z. Wang, Nils Braun, O. Seon, Frank Simon, Vladimir Popov, Y. Sakai, N. Dash, E. Solovieva, D. Kotchetkov, Y-J Kwon, R. Kroeger, M. E. Sevior, I. S. Lee, Tao Luo, K. Tanida, H. Kichimi, R. Ayad, K. Cho, S. Pardi, D. Cinabro, Y. Unno, I. Adachi, G. Inguglia, M. Salehi, Somnath Choudhury, D. M. Asner, M. Lubej, K. Hayasaka, Y. Seino, M. T. Prim, Shoichi Watanuki, A. Kuzmin, S. Ogawa, Samo Korpar, and H. Yamamoto
Subjects: Physics, Particle physics, Muon, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, Photon energy, 01 natural sciences, Belle experiment, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics, Lepton
Abstract: We present the result of the search for the rare B meson decay of B+ -> l(+)nu e gamma with l = e, mu. For the search the full data set recorded by the Belle experiment of 711 fb(-1) integrated luminosity near the Upsilon(4S) resonance is used. Signal candidates are reconstructed for photon energies E-gamma larger than 1 GeV using a novel multivariate tagging algorithm. The novel algorithm fully reconstructs the second B meson produced in the collision using hadronic modes and was specifically trained to recognize the signal signature in combination with hadronic tag-side B meson decays. This approach greatly enhances the performance. Background processes that can mimic this signature, mainly charmless semileptonic decays and continuum processes, are suppressed using multivariate methods. The number of signal candidates is determined by analyzing the missing mass squared distribution as inferred from the signal side particles and the kinematic properties of the tag-side B meson. No significant excess over the background-only hypothesis is observed and upper limits on the partial branching fraction Delta B with E-gamma > 1 GeV individually for electron and muon final states as well as for the average branching fraction of both lepton final states are reported. We find a Bayesian upper limit of Delta B(B+ -> l(+)nu el) 0.24 GeV at 90% CL.
Published: 2018
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27. First Evidence for cos2β>0 and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity

Author: V. B. Golubev, K. Chilikin, L. Zani, J. R. Wilson, Iki Adachi, T. S. Miyashita, Doo Young Kim, A. Palano, S. Emery, M. Feindt, J. B. Kim, K. Griessinger, D. Epifanov, A. Hafner, W. R. Innes, David Hutchcroft, O. Long, R. Cenci, Brian Meadows, J. M. Izen, M. Bellis, Eleonora Guido, H. Neal, K. Inami, H. Ye, R. Kass, S. Martellotti, D. W G S Leith, G. Schnell, E. Won, R. Pestotnik, S. Nishida, A. Calcaterra, J. P. Coleman, J. A. McKenna, T. E. Browder, J. Ocariz, M. T. Graham, F. Ferroni, R. J. Sobie, A. Roodman, S. Pardi, J. L. Ritchie, Noritaka Shimizu, Vikas Bansal, Eleonora Luppi, A. Beaulieu, Tara Nanut, T. Uglov, A. V. Gritsan, G. Wormser, A. G. Denig, Vitaly Vorobyev, B. N. Ratcliff, R. Y. So, T. Kuhr, S. R. Wagner, G. De Nardo, H. M. Lacker, M. Starič, D. Liventsev, E. Nakano, Z. Drásal, V. Savinov, D. J. Summers, C. H. Cheng, H. Ono, D. A. Roberts, S. Al Said, T. Matsuda, A. J S Smith, D. S. Chao, Vladimir Zhulanov, R. Kroeger, E. Ben-Haim, M. E. Sevior, I. S. Lee, S. J. Sekula, C. Bozzi, R. Mizuk, M. Piccolo, F. Di Lodovico, S. Uno, R. Kulasiri, T. Schroeder, A. J. Lankford, S. Sandilya, R. Godang, P. Goldenzweig, P. Pakhlov, N. Tasneem, J. Albert, G.V. Russo, J. Cochran, Yu. G. Kolomensky, H. Hayashii, J. Libby, C. Van Hulse, T. A. Shibata, Z. C. Huard, U. Tamponi, S. Passaggio, H. Miyata, B. Pal, Y. B. Li, Marcin Chrzaszcz, F. Le Diberder, Michael Sokoloff, Ray Franklin Cowan, P. C. Kim, F. U. Bernlochner, P. Patteri, Prafulla Kumar Behera, W. S. Hou, I. M. Peruzzi, B. Oberhof, F. Simonetto, J. G. Shiu, G. J. King, V. Babu, K. T. Kim, J. K. Ahn, A. Soffer, M. Z. Wang, K. Kinoshita, B. Bhuyan, N. Guttman, H. Park, A. Bozek, S. H. Kim, J. Dorfan, M. Gelb, H. Koch, Vladimir Popov, A. Zallo, S. Jia, D. N. Brown, R. Stroili, R. Ayad, K. Cho, C. Hearty, M. Iwasaki, P. K. Resmi, Marcello Rotondo, B. G. Cheon, James E. Fast, A. Kuzmin, M. Ebert, T. K. Pedlar, T. Kumita, K. Yu. Todyshevx, F. Forti, Y. Choi, K. J. Nath, E. A. Kravchenko, L. Santelj, K. H. Kang, T. Leddig, Shih-Chang Lee, D. Matvienko, C. Voß, M. Bomben, J. Haba, Dominik Müller, X. C. Lou, C. Chen, G. Finocchiaro, C. Z. Yuan, Y. Jin, A. J. Schwartz, C. H. Wang, Alberto Lusiani, Semen Eidelman, E. Grauges, L. Vitale, S. Ogawa, A. Rossi, Y. Watanabe, J. P. Lees, A. Filippi, S. E. Vahsen, G. A. Cowan, C. Bünger, C. Sciacca, R. C. Field, Gabriele Simi, G. Eigen, R. Gorodeisky, F. Martinez-Vidal, J. J. Walsh, C. Schwanda, R. Itoh, H. Ahmed, D. Cinabro, Tao Luo, F. Tenchini, Th. Müller, G. Rizzo, Y. Sakai, D. Bernard, J. Chauveau, S. I. Serednyakov, F. Palombo, S. Korpar, E. Gabathuler, T. Ferber, Tagir Aushev, C. Cartaro, Y. Onuki, A. Jawahery, M. Nayak, G. Cibinetto, M. K. Sullivan, M. Margoni, Y. Guan, A. Oyanguren, E. Waheed, R. M. Seddon, Nicola Neri, J. W. Gary, V. Gaur, W. Panduro Vazquez, Y. Iwasaki, C. Touramanis, S. Luitz, K. R. Schubert, P. Taras, S. Hirose, D. J. Payne, E. Fioravanti, Y. Li, Y. J. Kwon, V.N. Zhilich, F. Ferrarotto, E. M. T. Puccio, G. B. Mohanty, P. L. Wang, B. Golob, T. Lueck, Roland Waldi, Biplab Dey, Peter Kodys, Fergus Wilson, M. A. Giorgi, E. Paoloni, A. Zupanc, F. De Mori, A. B. Kaliyar, P. F. Harrison, H. Kichimi, D. G. Hitlin, H. K. Moon, M. R. Convery, A. Chen, F. Bianchi, G. Piredda, O. Schneider, U. Mallik, R. Cheaib, Y. Yusa, Bingran Wang, M. Röhrken, K. Senyo, J. S. Lange, V. Santoro, W. J. Wisniewski, C. Hast, W. W. Jacobs, A. M. Eisner, I. M. Nugent, M. T. Hedges, M. Carpinelli, K. Miyabayashi, I. Badhrees, M. Posocco, B. G. Fulsom, R. F. Schwitters, G. Varner, R. Mussa, A. M. Lutz, K. T. Flood, G. Casarosa, Simon Akar, M. Takizawa, Pavel Krokovny, R. Calabrese, V. E. Blinov, A. R. Buzykaev, A. Ishikawa, G. Vasseur, Roger Barlow, Ju-Young Kim, Miriam Heß, Y. Seino, S. Bettarini, R. de Sangro, M. Nakao, M. Biasini, P. Križan, G. Raven, Alexander Bondar, D. Gamba, R. Sacco, L. Cremaldi, Yu. I. Skovpen, C. P. Shen, K. Honscheid, G. Calderini, Elisa Manoni, R. Kowalewski, N. Arnaud, V.E. Shebalin, M. Heck, L. K. Li, M. V. Purohit, S. Di Carlo, D. M. Asner, K. Hayasaka, Sw. Banerjee, Soumen Paul, M. Uchida, G. Pakhlova, P. R. Burchat, G. Karyan, V. Bhardwaj, C. L. Hsu, J. A. Ernst, S. L. Wu, P. Ongmongkolkul, H. Atmacan, D. B. Macfarlane, Alessandro Pilloni, K. K. Joo, S. Dittrich, D. R. Peimer, Kiyoshi Tanida, Timothy Gershon, D. Aston, L. Li Gioi, A. Garmash, F. Anulli, Z. Doležal, J. M. Roney, Yoshinobu Unno, S. Zakharov, M. Lubej, G. Inguglia, V. Zhukova, M. Merola, A. K. Giri, K. Sumisawa, S. M. Spanier, G. Batignani, M. Masuda, C. L. Davis, M. Fritsch, A. P. Onuchin, L. Sun, Adrian John Bevan, Somnath Choudhury, Leo Piilonen, O. Seon, Frank Simon, D. J. Lange, Matteo Rama, James G. Smith, V. P. Druzhinin, D. M. Wright, M. S. Alam, E. Solovieva, R. Prepost, N. Dash, M. Rozanska, D. Kotchetkov, T. Adye, A. Randle-Conde, T. Julius, M. Verderi, R. Faccini, V. Poireau, T. Sumiyoshi, J. M. Losecco, G. Marchiori, F. C. Porter, Martin Ritter, T. Sanuki, S. Cunliffe, J. Va'Vra, W. S. Lockman, M. Salehi, H. Aihara, George Lafferty, C. P. Jessop, T. Hara, T. Mori, Oliver Grünberg, G. R. Bonneaud, N. K. Nisar, I. Pavelkin, D. Bettoni, Z. P. Zhang, S. Prell, B. G. Pushpawela, A. Gaz, S. H. Robertson, L. Lanceri, Jyoti Prakash Biswal, B. Echenard, M. Davier, J. MacNaughton, A. M. Bakich, W. Dunwoodie, D. Červenkov, Rocky Bala Garg, T. S. Mattison, W. Gradl, E. P. Solodov, I. Garzia, Thomas Latham, C. Patrignani, V. Tisserand, and M. Bračko
Subjects: Quark, Physics, Particle physics, Unitarity, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, General Physics and Astronomy, Dalitz plot, 01 natural sciences, B-factory, KEKB, 0103 physical sciences, CP violation, 010306 general physics
Abstract: We present first evidence that the cosine of the CP-violating weak phase 2β is positive, and hence exclude trigonometric multifold solutions of the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a time-dependent Dalitz plot analysis of B^{0}→D^{(*)}h^{0} with D→K_{S}^{0}π^{+}π^{-} decays, where h^{0}∈{π^{0},η,ω} denotes a light unflavored and neutral hadron. The measurement is performed combining the final data sets of the BABAR and Belle experiments collected at the ϒ(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6}BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6}BB[over ¯] pairs recorded by the Belle detector. The results of the measurement are sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle β of the CKM Unitarity Triangle is β=[22.5±4.4(stat)±1.2(syst)±0.6(model)]°. The measurement assumes no direct CP violation in B^{0}→D^{(*)}h^{0} decays. The quoted model uncertainties are due to the composition of the D^{0}→K_{S}^{0}π^{+}π^{-} decay amplitude model, which is newly established by performing a Dalitz plot amplitude analysis using a high-statistics e^{+}e^{-}→cc[over ¯] data sample. CP violation is observed in B^{0}→D^{(*)}h^{0} decays at the level of 5.1 standard deviations. The significance for cos2β>0 is 3.7 standard deviations. The trigonometric multifold solution π/2-β=(68.1±0.7)° is excluded at the level of 7.3 standard deviations. The measurement resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle.
Published: 2018
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28. Measurement of cos2β in B0→D(*)h0 with D→KS0π+π− decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

Author: C. Bünger, T. Matsuda, J. W. Gary, T. S. Mattison, S. H. Kim, S. J. Sekula, A. Jawahery, P. Krokovny, M. Feindt, I. Adachi, D. B. MacFarlane, C. Hearty, P. Goldenzweig, K. H. Kang, K. Cho, S. Sandilya, A. G. Denig, R. F. Schwitters, M. Rozanska, D. Kotchetkov, E. Fioravanti, B. Golob, F. Palombo, T. Lueck, P. Pakhlov, J. B. Kim, K. Yu. Todyshevx, T. Leddig, D. Epifanov, N. K. Nisar, J. S. Lange, Z. C. Huard, V.N. Zhilich, Shih-Chang Lee, W. S. Lockman, M. R. Convery, D. N. Brown, A. Calcaterra, M. Z. Wang, K. Kinoshita, D. J. Summers, A. Filippi, H. Park, A. Bozek, Simon Akar, R. Prepost, R. Mussa, D. Gamba, M. Bellis, A. Ishikawa, F. De Mori, J. E. Fast, Cheng Chen, M. Starič, N. Tasneem, G.V. Russo, J. P. Coleman, F. Anulli, Alessandro Gaz, S. H. Robertson, Aidan Randle-Conde, W. S. Hou, G. J. King, Victoria Zhukova, F. F. Wilson, R. J. Sobie, L. Vitale, B. T. Meadows, P. Križan, G. Raven, Denis Bernard, S. Nishida, K. Miyabayashi, I. Badhrees, R. Ayad, James R. Wilson, V. Bhardwaj, R. Cowan, E. A. Kravchenko, Elisa Guido, J. L. Ritchie, Herbert Koch, T. K. Pedlar, A. P. Onuchin, A. Chen, S. Martellotti, F. Martinez-Vidal, Marco Bomben, M. D. Sokoloff, S. E. Vahsen, A. J. S. Smith, P. R. Burchat, R. Calabrese, C. Cartaro, M. Rotondo, V. Vorobyev, U. Mallik, I. Pavelkin, G. Schnell, D. Cinabro, K. Griessinger, M. Iwasaki, D. Matvienko, P. F. Harrison, G. Cibinetto, A. Oyanguren, E. Luppi, S. Emery, M. Merola, Peter S. Kim, T. S. Miyashita, N. Neri, G. Vasseur, E. Paoloni, D. Y. Kim, B. K. Pal, B. G. Cheon, K. T. Kim, L. M. Cremaldi, R. B. Garg, B. Bhuyan, A. V. Gritsan, Shigeki Hirose, K. T. Flood, A. M. Eisner, Y. Iwasaki, R. Godang, Tao Luo, K. Tanida, F. Di Lodovico, B. G. Fulsom, G. De Nardo, J. Chauveau, M. T. Hedges, A. B. Kaliyar, J. K. Ahn, Y. J. Kwon, G. Eigen, I. M. Nugent, V. E. Blinov, S. Bettarini, T. E. Browder, D. J. Payne, M. Ebert, A. J. Bevan, M. Röhrken, K. Chilikin, H. M. Lacker, Tara Nanut, T. Kuhr, T. A. Shibata, H. Miyata, T. Aushev, R. Sacco, A. J. Schwartz, E. Grauges, V. V. Zhulanov, G. Inguglia, O. Schneider, T. Uglov, V. Savinov, A. Palano, C. P. Jessop, S. M. Spanier, Alessandro Pilloni, J. Ocariz, R. Mizuk, Mario Giorgi, M. Heß, H. Kichimi, E. Won, M. K. Sullivan, Yu. G. Kolomensky, D. W. G. S. Leith, H. Atmacan, J. P. Lees, D. R. Peimer, H. Ono, D. G. Hitlin, Bingran Wang, S. Zakharov, Semen Eidelman, David Hutchcroft, L. Li Gioi, A. Zupanc, Wu S. L., K. Hayasaka, G. Calderini, E. Nakano, F. Simonetto, J. Va’vra, D. S. Chao, M. Davier, R. Cenci, R. Cheaib, R. Waldi, A. Zallo, S. Korpar, V. P. Druzhinin, C. Bozzi, G. Cowan, Noritaka Shimizu, J. M. LoSecco, M. V. Purohit, Douglas Wright, L. Zani, R. Gorodeisky, P. Patteri, M. Fritsch, D. A. Roberts, Yu. I. Skovpen, B. Dey, P. Ongmongkolkul, K. Honscheid, M. Piccolo, F. Forti, J. J. Walsh, R. Kroeger, M. E. Sevior, I. S. Lee, A. M. Lutz, R. J. Barlow, R. Stroili, M. T. Graham, A. Hafner, J. M. Roney, Z. Drásal, J. Albert, K. Senyo, E. M. T. Puccio, X. C. Lou, G. Batignani, V.E. Shebalin, Somnath Choudhury, N. Guttman, A. Kuzmin, J. G. Shiu, G. Wormser, K. K. Joo, Y. Unno, M. Posocco, J. G. Smith, S. Al Said, K. Inami, C. Z. Yuan, J. Cochran, E. Ben-Haim, C. Hast, M. Heck, D. J. Lange, G. Piredda, Hamad Ahmed, W. J. Wisniewski, G. Marchiori, S. Ogawa, G. D. Lafferty, Y. B. Li, H. A. Neal, V. Santoro, J. Libby, M. Lubej, W. Dunwoodie, A. M. Rossi, S. Passaggio, W. Panduro Vazquez, S. Uno, C. Schwanda, Tim Adye, V. B. Golubev, U. Tamponi, Y. Choi, K. J. Nath, G. Casarosa, L. Santelj, E. Waheed, R. D. Kass, A. Roodman, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, S. Jia, R. M. Seddon, J. M. Izen, Crisostomo Sciacca, D. Aston, M. Nayak, M. Uchida, F. Ferroni, A. R. Buzykaev, G. Rizzo, M. Rama, L. Lanceri, So R. Y., A. Beaulieu, Y. Seino, J. A. McKenna, C. H. Cheng, T. J. Gershon, D. Liventsev, Y. Jin, C. H. Wang, S. Paul, Martino Margoni, S. Pardi, T. Müller, K. Sumisawa, D. M. Asner, T. E. Latham, M. Carpinelli, Ju-Young Kim, Maurizio Biasini, D. R. Muller, G. S. Varner, R. de Sangro, Stephen Robert Wagner, Y. Yusa, K. R. Schubert, A. K. Giri, Tamara Vazquez Schroeder, R. Itoh, C. L. Davis, Elisa Manoni, Li L. K., I. M. Peruzzi, Owen Rosser Long, M. Masuda, C. B. Van Hulse, G. B. Mohanty, J. A. Ernst, S. I. Serednyakov, F. Bianchi, L. Sun, S. Dittrich, P. K. Resmi, M. Gelb, Pu Wang, R. Kowalewski, Peter Kodys, A. Garmash, W. W. Jacobs, V. Bansal, G. R. Bonneaud, J. Dorfan, S. Di Carlo, G. Karyan, P. K. Behera, M. Verderi, N. Arnaud, A.E. Bondar, M. Takizawa, C. Touramanis, Z. Doležal, O. Grünberg, P. Taras, E. P. Solodov, O. Seon, Frank Simon, Y. Sakai, S. Prell, I. Garzia, V. Poireau, A. Soffer, A. Lusiani, N. Dash, E. Solovieva, Li Y. B., R. C. Field, G. Finocchiaro, M. S. Alam, S. Cunliffe, B. Oberhof, L. E. Piilonen, G. Pakhlova, R. Kulasiri, T. Hara, T. Julius, W. Gradl, T. Mori, H. Aihara, B. N. Ratcliff, S. Luitz, F. Tenchini, T. Sumiyoshi, Martin Ritter, Z. P. Zhang, T. Sanuki, B. G. Pushpawela, Jyoti Prakash Biswal, D. Bettoni, V. Gaur, M. Nakao, B. Echenard, Florian Urs Bernlochner, J. MacNaughton, C. Patrignani, V. Tisserand, M. Bračko, A. M. Bakich, Sw. Banerjee, G. Simi, D. Červenkov, E. Gabathuler, W. R. Innes, F. C. Porter, M. Chrzaszcz, and C. Voß
Subjects: Physics, Particle physics, Unitarity, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Dalitz plot, 01 natural sciences, B-factory, KEKB, 0103 physical sciences, CP violation, 010306 general physics
Abstract: We report measurements of sin2β and cos2β using a time-dependent Dalitz plot analysis of B0→D(*)h0 with D→KS0π+π- decays, where the light unflavored and neutral hadron h0 is a π0, η, or ω meson. The analysis uses a combination of the final data sets of the BaBar and Belle experiments containing 471×106 and 772×106 BB¯ pairs collected at the ϒ(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle is β=(22.5±4.4(stat)±1.2(syst)±0.6(model))°. The last quoted uncertainties are due to the composition of the D0→KS0π+π- decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics e+e-→cc¯ data sample as part of this analysis. We find the first evidence for cos2β>0 at the level of 3.7 standard deviations. The measurement excludes the trigonometric multifold solution π/2-β=(68.1±0.7)° at the level of 7.3 standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of β=0° is ruled out at the level of 5.1 standard deviations, and thus CP violation is observed in B0→D(*)h0 decays. The measurement assumes no direct CP violation in B0→D(*)h0 decays.
Published: 2018
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29. Measurement of the branching fraction and time-dependent CP asymmetry for B0→J/ψπ0 decays

Author: Pavel Krokovny, S. Cunliffe, Y. Guan, D. Epifanov, J. Libby, K. Trabelsi, M. Merola, Seok Kim, T. K. Pedlar, J. E. Fast, E. Nakano, D. Matvienko, F. Tenchini, Samo Korpar, M. Sumihama, Motoki Iwasaki, H. Hayashii, R. B. Garg, B. Bhuyan, T. Sumiyoshi, Y-J Kwon, B. G. Fulsom, Martin Ritter, R. Mizuk, G. Schnell, K. Chilikin, R. Kroeger, M. E. Sevior, T. Bilka, T. Matsuda, T. Sanuki, T.-A. Shibata, D. M. Asner, G. Pakhlova, H. Miyata, K. Hayasaka, C. Beleño, Y. Sakai, R. Kulasiri, Yang Li, Seema Bahinipati, Bo Wang, Y. Choi, K. J. Nath, V. Savinov, T. Hara, L. Santelj, L. Li Gioi, T. Julius, T. Uglov, M. V. Purohit, H. Ono, K. Inami, M. Nayak, M. Gelb, Z. P. Zhang, B. G. Cheon, C.-L. Hsu, K. Senyo, G. Varner, Y. Seino, M. Z. Wang, K. Kinoshita, Peter Kodys, W. W. Jacobs, A. Kuzmin, M. Uchida, L. K. Li, S. Nishida, S. Ogawa, U. Tamponi, Tagir Aushev, N. Dash, E. Solovieva, E. Prencipe, S. Jia, D. Cinabro, S. Di Carlo, S. C. Lee, G. Russo, H. Park, A. Bozek, K. T. Kim, G. Karyan, Rahul Kumar, A. Garmash, V. Bansal, Z. Natkaniec, Kevin Varvell, C. H. Wang, S. Al Said, D. Kotchetkov, R. Itoh, A. K. Giri, Y. Unno, P. Wang, S. Paul, V. M. Aulchenko, M. Masuda, P. K. Behera, Y. Tao, T. Mori, H. Aihara, X. L. Wang, G. B. Mohanty, R. Ayad, K. Cho, V. Chekelian, Jyoti Prakash Biswal, K. Lalwani, S. Uno, C. Schwanda, S. Uehara, R. Van Tonder, B. K. Pal, V. Gaur, Deepak Kumar Sahoo, L. Cao, Leo Piilonen, D. Joffe, O. Seon, Frank Simon, Vladimir Popov, Somnath Choudhury, S. Pardi, M. Takizawa, John Yelton, Z. Doležal, R. Pestotnik, Victoria Zhukova, A. Chen, Eberhard Widmann, T. Higuchi, D. Červenkov, P. Goldenzweig, S. Sandilya, M. Starič, S. E. Vahsen, V.N. Zhilich, Y. Iwasaki, O. Schneider, M. Bračko, K. Miyabayashi, I. Badhrees, A. J. Schwartz, D. Y. Kim, W. S. Hou, Andrey Sokolov, V. Vorobyev, J. H. Yin, Semen Eidelman, P. C. Lu, A. Ishikawa, B. Golob, M. Nakao, P. Križan, J. Schueler, E. Won, H. Atmacan, and K. Tanida
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, media_common.quotation_subject, Resonance, 01 natural sciences, Asymmetry, Belle experiment, law.invention, KEKB, law, 0103 physical sciences, CP violation, 010306 general physics, Collider, media_common
Abstract: We measure the branching fraction and time-dependent CP-violating asymmetry for B0→J/ψπ0 decays using a data sample of 711 fb-1 collected on the ϒ(4S) resonance by the Belle experiment running at the KEKB e+e- collider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10-5, which is the most precise measurement to date. The measured CP asymmetry parameters are S=-0.59±0.19(stat)±0.03(syst) and A=-0.15±0.14(stat)+0.04-0.03(syst). The mixing-induced CP asymmetry (S) differs from the case of no CP violation by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.
Published: 2018
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30. Measurement of the decays Λc→Σππ at Belle

Author: Tagir Aushev, Y. Onuki, Iki Adachi, H. Miyata, M. Watanabe, Bo Wang, U. Tamponi, V. Gaur, S. Jia, Doo Young Kim, Y. Jin, O. Grzymkowska, C. H. Wang, K. Suzuki, S. Paul, V. M. Aulchenko, L. Li Gioi, J. Libby, D. M. Asner, M. Lubej, K. Hayasaka, A. Kuzmin, H. Ye, M. Nayak, G. Varner, Victoria Zhukova, F. Tenchini, A. B. Kaliyar, M. Niiyama, A. Chen, R. Mussa, A. Garmash, Elisa Guido, Shih-Chang Lee, S. Nishida, Takuro Sanuki, G. Schnell, B. G. Cheon, T. Uglov, D. Kotchetkov, V.N. Zhilich, R. Kulasiri, Z. Natkaniec, V.E. Shebalin, S. Al Said, M. T. Hedges, B. Shwartz, Pavel Krokovny, M. Salehi, T. Iijima, A. Ishikawa, J. Haba, Y. Seino, P. Križan, V. Bansal, Peter Kodys, W. W. Jacobs, Tao Luo, T. Nakano, K. K. Joo, S. Korpar, T. Kuhr, K. Senyo, A. Zupanc, T. Julius, G. Russo, H. Park, A. Bozek, S. Uno, C. Schwanda, K. Chilikin, H. Hayashii, Hyunyong Kim, S. Zakharov, T. Kawasaki, M. Sumihama, Motoki Iwasaki, D. Cinabro, I. Jaegle, Y. Watanabe, H. Kichimi, K. Miyabayashi, I. Badhrees, S. Di Carlo, M. Uchida, Andrey Sokolov, M. Merola, H. Atmacan, T.-A. Shibata, Y. Yusa, G. Karyan, L. K. Li, P. K. Behera, Massimo Berger, M. Takizawa, C. Z. Yuan, H. Ono, R. Mizuk, D. Liventsev, C. P. Shen, Noritaka Shimizu, Phillip Urquijo, M. Starič, Y. B. Li, T. Nanut, V. V. Zhulanov, Seok Kim, A. K. Giri, Y. Choi, K. J. Nath, R. Kroeger, M. E. Sevior, I. S. Lee, E. Won, R. Pestotnik, K. Inami, T. Hara, L. Santelj, A. Rostomyan, Semen Eidelman, X. L. Wang, Y. Sakai, R. Itoh, W. S. Hou, T. Sumiyoshi, Martin Ritter, V. Babu, M. Z. Wang, K. Kinoshita, J. B. Kim, M. Masuda, C. Kiesling, P. Wang, T. Czank, N. Dash, E. Solovieva, G. B. Mohanty, Y. Unno, B. K. Pal, V. Vorobyev, T. Ferber, I. Pavelkin, R. Ayad, K. Cho, C. B. Van Hulse, G. Pakhlova, R. B. Garg, M. Bračko, B. Bhuyan, Leo Piilonen, T. E. Browder, J. K. Ahn, A. J. Schwartz, P. Pakhlov, A. Vossen, A. M. Bakich, V. Savinov, N. K. Nisar, H. K. Moon, O. Seon, Frank Simon, J. S. Lange, Vladimir Popov, N. Gabyshev, D. Červenkov, Eberhard Widmann, J. F. Strube, Dipanwita Dutta, D. Matvienko, Z. P. Zhang, Jyoti Prakash Biswal, M. Nakao, P. Goldenzweig, S. Sandilya, H. Aihara, T. K. Pedlar, Y. Iwasaki, Y. J. Kwon, O. Schneider, B. G. Fulsom, Kevin Varvell, T. Mori, Y. Usov, T. Matsuda, G. Bonvicini, A. Vinokurova, J. G. Shiu, K. H. Kang, D. Epifanov, V. Bhardwaj, M. Gelb, G. Inguglia, S. Okuno, K. T. Kim, Y. Guan, Kiyoshi Tanida, John Yelton, Z. Doležal, and J. E. Fast
Subjects: Physics, KEKB, 010308 nuclear & particles physics, Full data, Electron–positron annihilation, 0103 physical sciences, Pi, Analytical chemistry, 010306 general physics, Lambda, 01 natural sciences
Abstract: We report measurements of the branching fractions of the decays Lambda(+)(c) -> Sigma(+)pi(-)pi(+), Lambda(+)(c) -> Sigma(0)pi(+)pi(0) and Lambda(+)(c) -> Sigma(+)pi(0)pi(0) relative to the reference channel Lambda(+)(c) -> pK(-)p(+). The analysis is based on the full data sample collected at and near the gamma(4S) resonance by the Belle detector at the KEKB asymmetric-energy ethorne-collider, corresponding to an integrated luminosity of 711 fb(-1). We measure B(Lambda(+)(c) -> Sigma(+)pi(-)pi(+))/B(Lambda(+)(c) -> pK(-)pi(+)) = 0.719 +/- 0.003 +/- 0.024, B(Lambda(+)(c) -> Sigma(0) pi(+)pi(0))/B(Lambda(+)(c) -> pK(-)pi(+)) = 0.575 +/- 0.005 +/- 0.036 and B(Lambda(+)(c) -> Sigma(+)pi(0)pi(0))/B(Lambda(+)(c) -> pK(-)pi(+)) = 0.247 +/- 0.006 +/- 0.019. The listed uncertainties are statistical and systematic, respectively.
Published: 2018
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31. Observation of ϒ(2S)→γηb(1S) Decay

Author: L. E. Piilonen, D. Epifanov, B. Pal, T. V. Dong, Y. Choi, K. J. Nath, K. Kinoshita, E. Prencipe, G. Schnell, A. Garmash, T. Iijima, V.N. Zhilich, T. K. Pedlar, Y. Sakai, R. Mussa, C. P. Shen, K. Miyabayashi, I. Badhrees, H. B. Jeon, A. Ishikawa, S. Eidelman, T. Kuhr, T. Julius, M. Nakao, N. K. Nisar, V. Babu, P. Križan, T. Aushev, Soumen Paul, J. H. Yin, S. E. Vahsen, Z. P. Zhang, T. Ferber, H. Park, T. Matsuda, A. Bozek, S. Uno, G. Pakhlova, J. G. Shiu, G. Bonvicini, K. K. Joo, H. K. Moon, S. Cunliffe, R. Kulasiri, J. S. Lange, R. Pestotnik, A. Vinokurova, A. Vossen, X. L. Wang, V. Chekelian, H. Hayashii, G. B. Mohanty, Phillip Urquijo, M. Sumihama, Z. Drásal, R. Van Tonder, S. H. Kim, Eleonora Guido, Frank Simon, P. Krokovny, D. Joffe, Vladimir Popov, B. Bhuyan, Andrey Sokolov, Y. B. Li, K. Cho, V. Zhukova, M. Salehi, P. L. Wang, T. Mori, H. Aihara, Luka Santelj, V. Savinov, S. Hirose, James E. Fast, A. Zupanc, W. Sutcliffe, Jyoti Prakash Biswal, G.V. Russo, V. M. Aulchenko, M. Iwasaki, J. F. Strube, W. S. Hou, B. G. Cheon, L. Li Gioi, Shih-Chang Lee, K. Inami, E. Solovieva, H. J. Kim, Massimo Berger, V. Vorobyev, N. Dash, B. Shwartz, R. Itoh, A. Bondar, F. Tenchini, C. Z. Yuan, S. Korpar, D. Kotchetkov, T. Sumiyoshi, E. Won, Martin Ritter, T. Sanuki, A. Chen, V.E. Shebalin, H. Kichimi, S. Al Said, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, M. Niiyama, C. Schwanda, V. Gaur, R. Mizuk, K. Chilikin, C. Beleño, K. T. Kim, Yoshinobu Unno, S. K. Choi, A. K. Giri, K. Sumisawa, H. Atmacan, M. Takizawa, Z. Doležal, M. Masuda, L. Cao, Peter Kodys, W. W. Jacobs, S. Di Carlo, A. Kuzmin, S. Ogawa, U. Tamponi, S. Jia, C. H. Wang, Tara Nanut, T. Bilka, T. Uglov, M. Watanabe, T. E. Browder, H. Ye, M. Nayak, P. Pakhlov, S. Nishida, Jochen Dingfelder, Z. Natkaniec, R. Ayad, D. Y. Kim, M. Merola, H. Ono, K. Senyo, Vikas Bansal, I. Adachi, J. B. Kim, C. Van Hulse, Jasvinder A. Singh, S. Sandilya, M. Starič, M. Gelb, Tao Luo, K. Tanida, Y. Iwasaki, Y. J. Kwon, O. Schneider, J. Libby, D. M. Asner, K. Hayasaka, Linhu Li, Y. Seino, Bingran Wang, Shoichi Watanuki, D. Cinabro, A. Rabusov, M. Lubej, G. Inguglia, Somnath Choudhury, S. Pardi, S. Okuno, D. Liventsev, Vladimir Zhulanov, Y. Jin, R. Kroeger, M. E. Sevior, I. S. Lee, P. Goldenzweig, J. Haba, T. Kawasaki, M. Uchida, V. Bhardwaj, G. S. Varner, A. Rostomyan, B. G. Fulsom, C. Kiesling, M. Bračko, Rocky Bala Garg, Eberhard Widmann, D. Matvienko, A. M. Bakich, N. Gabyshev, and D. Červenkov
Subjects: Physics, Photon, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, 01 natural sciences, Measure (mathematics), law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, 010306 general physics, Collider
Abstract: We report the observation of ϒ(2S)→γηb(1S) decay based on an analysis of the inclusive photon spectrum of 24.7 fb-1 of e+e- collisions at the ϒ(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure a branching fraction of B[ϒ(2S)→γηb(1S)]=(6.1-0.7-0.6+0.6+0.9)×10-4 and derive an ηb(1S) mass of 9394.8-3.1-2.7+2.7+4.5 MeV/c2, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.
Published: 2018
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32. Observation of e+e−→γχc1 and search for e+e−→γχc0 , γχc2 , and γηc at s near 10.6 GeV at Belle

Author: B. G. Cheon, Y. Iwasaki, Y. J. Kwon, J. Libby, R. B. Garg, B. Bhuyan, D. Epifanov, Jihwa Lee, D. Kotchetkov, M. Merola, B. G. Fulsom, O. Schneider, Kevin Varvell, J. Haba, T. E. Browder, J. Kahn, C. P. Shen, E. Nakano, T. K. Pedlar, A. K. Giri, Seok Kim, G.V. Russo, S. Korpar, Y. Seino, S. L. Olsen, C. H. Li, Y. Tao, M. Masuda, G. Schnell, T. Iijima, T. Mori, H. Aihara, V. Savinov, N. Dash, Y. Usov, V.N. Zhilich, W. S. Hou, Rahul Kumar, Andrey Sokolov, V. Babu, L. Li Gioi, L. Cao, Shoichi Watanuki, Y. Sakai, P. Goldenzweig, Alexei Kuzmin, T. Matsuda, T. Aushev, D. M. Asner, J. G. Shiu, N. Gabyshev, D. Červenkov, R. Mizuk, S. Sandilya, S. Eidelman, K. Senyo, S. Pardi, H. Ono, H. Hayashii, Hyunyong Kim, T. Kawasaki, V. V. Zhulanov, V. Vorobyev, T. Ferber, H. Ye, C. Beleño, F. Tenchini, T. Kuhr, M. Uchida, L. K. Li, Z. P. Zhang, Phillip Urquijo, Y. B. Li, Y. Yusa, T. Sumiyoshi, E. Solovieva, M. Starič, P. Krokovny, K. Cho, J. B. Kim, M. Z. Wang, K. Kinoshita, C. Kiesling, R. Mussa, J. H. Yin, D. Liventsev, G. S. Varner, Y. Unno, P. C. Lu, Martin Ritter, M. Nayak, C.-L. Hsu, J. E. Fast, A. Frey, I. Adachi, A. Ishikawa, Ya-Qiu Jin, D. Joffe, R. Itoh, S. K. Choi, H. Miyata, R. Kroeger, M. E. Sevior, I. S. Lee, M. Bračko, A. Rostomyan, M. Salehi, Seongbae Yang, Peter Kodys, W. W. Jacobs, T. Sanuki, S. Ogawa, P. Wang, P. Križan, S. Al Said, T.-A. Shibata, Frank Simon, Vladimir Popov, T. Bilka, N. K. Nisar, Jyoti Prakash Biswal, Bo Wang, S. Di Carlo, Eberhard Widmann, T. V. Dong, E. Waheed, J. F. Strube, Y. Choi, K. J. Nath, J. S. Lange, K. Tanida, R. Ayad, G. Karyan, K. Hayasaka, A. Bobrov, S. Cunliffe, L. Santelj, D. Y. Kim, W. Ostrowicz, V. Gaur, S. Uehara, A. B. Kaliyar, M. Takizawa, K. Inami, M. Nakao, Z. Doležal, S. Jia, J. MacNaughton, T. Uglov, J. Schueler, K. Lalwani, E. Won, L. E. Piilonen, C. H. Wang, S. Uno, C. Schwanda, S. Paul, G. Pakhlova, M. Gelb, H. Kichimi, R. Kulasiri, Z. J. Liptak, H. Atmacan, A. Garmash, Daniel Greenwald, V. Bansal, P. K. Behera, D. Cinabro, M. Lubej, G. Inguglia, P. Chang, Somnath Choudhury, Shih-Chang Lee, Motoki Iwasaki, W. Sutcliffe, Y. Onuki, H. Yamamoto, V. M. Aulchenko, Massimo Berger, Victoria Zhukova, C. Z. Yuan, A. Chen, E. Prencipe, K. Chilikin, R. Pestotnik, A. Bozek, S. Nishida, X. L. Wang, V. Chekelian, D. Matvienko, R. Van Tonder, B. K. Pal, and Z. S. Stottler
Subjects: Physics, Particle physics, KEKB, 010308 nuclear & particles physics, law, Electron–positron annihilation, 0103 physical sciences, Born approximation, 010306 general physics, Collider, 01 natural sciences, law.invention
Abstract: Using data samples of 89.5 fb(-1), 711.0 fb(-1), and 121.4 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider at center-of-mass energies 10.52, 10.58, and 10.867 GeV, respectively, we study the exclusive reactions e(+)e(-) -> gamma chi(cJ) (J = 0, 1, 2) and e(+)e(-) -> gamma chi(c). A significant gamma chi(c1) signal is observed for the first time at root s = 10.58 GeV with a significance of 5.1 sigma including systematic uncertainties. No significant excesses for gamma chi(c0), gamma chi(c2), and gamma chi(c) final states are found, and we set 90% credibility level upper limits on the Born cross sections (sigma(B)) at 10.52 GeV, 10.58 GeV, and 10.867 GeV. Together with cross sections measured by BESIII at lower center-of-mass energies, the energy dependency of sigma(B) (e(+)e(-) -> gamma chi(c1)) thorn is obtained.
Published: 2018
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33. Measurement of ηc(1S) , ηc(2S) , and nonresonant η′π+π− production via two-photon collisions

Author: H. Ye, J. E. Fast, C. C. Zhang, M. Watanabe, U. Tamponi, C. H. Wang, S. Paul, Elisa Guido, G. Schnell, V. Babu, T. Aushev, Y. Iwasaki, Y. J. Kwon, O. Schneider, H. Ono, M. Nayak, T. Ferber, Ya-Qiu Jin, A. Garmash, Z. Drásal, P. Goldenzweig, V. Bansal, S. Sandilya, M. Iwasaki, B. G. Cheon, S. Nishida, M. Starič, Y. Unno, P. K. Behera, D. Matvienko, A. Zupanc, R. Ayad, A. Rostomyan, J. Libby, M. Lubej, X. L. Wang, V.E. Shebalin, Tao Luo, C. Kiesling, J. Haba, S. Al Said, Z. Natkaniec, A. B. Kaliyar, K. Tanida, D. M. Asner, S. Uehara, K. Chilikin, S. Korpar, T. Nanut, Y. Seino, B. K. Pal, M. Masuda, M. Bračko, S. Eidelman, Meng Wang, Y. Watanabe, E. Won, P. Pakhlov, H. Kichimi, Shih-Chang Lee, C. P. Shen, S. Uno, C. Schwanda, I. Adachi, Y. Yusa, S. Okuno, M. Salehi, J. G. Shiu, R. Pestotnik, A. M. Bakich, H. Atmacan, C. B. Van Hulse, Phillip Urquijo, Massimo Berger, G. Russo, H. Park, A. Bozek, Victoria Zhukova, N. Gabyshev, D. Červenkov, Y. Choi, K. J. Nath, Y. B. Li, A. Chen, Y. Onuki, T.-A. Shibata, Rocky Bala Garg, C. Z. Yuan, Eberhard Widmann, Andrey Sokolov, J. F. Strube, T. Uglov, W. S. Hou, Peter Kodys, B. Bhuyan, J. B. Kim, V. M. Aulchenko, H. Miyata, B. G. Fulsom, D. Cinabro, T. Czank, E. L. Barberio, Bo Wang, K. Inami, M. T. Hedges, S. Di Carlo, V. Vorobyev, G. Inguglia, V. V. Zhulanov, K. Hayasaka, K. Senyo, T. Kawasaki, G. Karyan, M. Uchida, L. K. Li, R. Mizuk, Noritaka Shimizu, Q. N. Xu, D. Liventsev, K. K. Joo, V. Savinov, D. Y. Kim, M. Merola, N. K. Nisar, H. K. Moon, G. S. Varner, H. Hayashii, Hyunyong Kim, S. Zakharov, F. Tenchini, R. Kroeger, M. E. Sevior, I. S. Lee, R. Mussa, R. Itoh, H. B. Jeon, V.N. Zhilich, A. Ishikawa, P. Križan, P. Wang, T. Sumiyoshi, Martin Ritter, I. Jaegle, K. Miyabayashi, I. Badhrees, T. Sanuki, S. Cunliffe, Y. Guan, A. Vossen, L. E. Piilonen, G. Pakhlova, R. Kulasiri, O. Seon, Vladimir Popov, Y. Sakai, Jyoti Prakash Biswal, V. Gaur, N. Dash, E. Solovieva, D. Kotchetkov, T. Mori, H. Aihara, Z. P. Zhang, A.E. Bondar, M. Takizawa, Z. Doležal, S. K. Choi, T. Julius, M. Gelb, D. Epifanov, V. Bhardwaj, T. K. Pedlar, T. Matsuda, A. Vinokurova, P. Krokovny, K. H. Kang, K. Cho, and L. Li Gioi
Subjects: Systematic error, Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Quarkonium, 01 natural sciences, KEKB, 0103 physical sciences, Pi, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics
Abstract: We report the measurement of $\gamma \gamma \to \eta_{c}(1S), \eta_{c}(2S) \to \eta' \pi^+ \pi^-$ with $\eta'$ decays to $\gamma \rho$ and $\eta \pi^+ pi^-$ using 941 fb$^{-1}$ of data collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The $\eta_{c}(1S)$ mass and width are measured to be $M = [2984.6\pm0.7 (stat.)\pm2.2 (syst.)] MeV/c^{2}$ and $\Gamma = [30.8^{+2.3}_{-2.2}~(stat.) \pm 2.5~(syst.)]$ MeV, respectively. First observation of $\eta_{c}(2S) \to \eta' pi^+ pi^-$ with a significance of 5.5$\sigma$ including systematic error is obtained, and the $\eta_{c}(2S)$ mass is measured to be $M = [3635.1\pm3.7~(stat.)\pm2.9~(syst.)] MeV/c^{2}$. The products of the two-photon decay width and branching fraction (B) of decays to $\eta' pi^+ pi^-$ are determined to be $\Gamma_{\gamma \gamma}B = [65.4\pm2.6~(stat.)\pm6.9~(syst.)]$ eV for $\eta_{c}(1S)$ and $[5.6^{+1.2}_{-1.1}~(stat.)\pm1.1~(syst.)]$ eV for $\eta_{c}(2S)$. A new decay mode for the $\eta_{c}(1S) \to \eta' f_{0}(2080)$ with $f_{0}(2080) \to \pi^+ pi^-$ is observed with a statistical significance of 20$\sigma$. The $f_{0}(2080)$ mass and width are determined to be $M = [2083^{+63}_{-66}~(stat.)\pm 32~(syst.)] MeV/c^{2}$ and $\Gamma = [178^{+60}_{-178}~(stat.) \pm 55~(syst.)]$ MeV. The cross sections for $\gamma \gamma \to \eta' pi^+ pi^-$ and $\eta' f_{2}(1270)$ are measured for the first time.
Published: 2018
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34. Observation of ϒ(4S)→η′ϒ(1S)

Author: V. Babu, T. Aushev, G. Schnell, A. Kuzmin, T. Ferber, S. Ogawa, L. E. Piilonen, M. Salehi, Y. Sakai, G. B. Mohanty, M. Starič, Vikas Bansal, T. Julius, F. Tenchini, T. Sumiyoshi, Rocky Bala Garg, Eberhard Widmann, T. Kumita, Y. Yusa, H. K. Moon, E. Nakano, R. Mussa, H. B. Jeon, C. P. Shen, T. Sanuki, M. Niiyama, C. Van Hulse, A. Bozek, A. Ishikawa, J. G. Shiu, M. Nayak, K. T. Kim, Y. Iwasaki, Y. J. Kwon, M. Nakao, Soumen Paul, A. Chen, J. Libby, S. Nishida, C. W. Park, J. Haba, S. K. Choi, M. T. Hedges, D. Matvienko, O. Schneider, P. Križan, E. Won, L. Li Gioi, K. Chilikin, V.N. Zhilich, Y. B. Li, A. Garmash, X. L. Wang, V. Chekelian, A. M. Bakich, K. Inami, H. Atmacan, Eleonora Guido, Y. Seino, D. M. Asner, Tao Luo, K. Tanida, S. Zakharov, M. Z. Wang, K. Kinoshita, U. Tamponi, K. Miyabayashi, I. Badhrees, Andrey Sokolov, J. MacNaughton, M. Merola, R. Pestotnik, B. Pal, M. Iwasaki, Vladimir Popov, Massimo Berger, M. Watanabe, G.V. Russo, Tara Nanut, T. E. Browder, B. G. Cheon, T. A. Shibata, H. Miyata, Y. Choi, K. J. Nath, D. Cinabro, T. Uglov, N. Gabyshev, D. Červenkov, C. Z. Yuan, Prafulla Kumar Behera, W. Ostrowicz, W. S. Hou, S.I. Eidelman, M. Lubej, G. Inguglia, P. L. Wang, S. Jia, Bingran Wang, James E. Fast, M. Gelb, B.A. Shwartz, H. Hayashii, S. Korpar, D. Kotchetkov, T. Hara, T. Kawasaki, Somnath Choudhury, C. H. Wang, M. Uchida, S. Pardi, L. K. Li, H. Ye, V. Bhardwaj, D. Liventsev, Vladimir Zhulanov, Y. Jin, G. S. Varner, A.E. Bondar, C. Kiesling, R. Itoh, A. Rostomyan, S. Cunliffe, B. G. Fulsom, R. Kroeger, I. S. Lee, P. Goldenzweig, M. Takizawa, John Yelton, M. Bračko, Z. Doležal, R. Mizuk, Z. P. Zhang, G. Pakhlova, Peter Kodys, W. W. Jacobs, T. Mori, H. Aihara, Y. Usov, S. Di Carlo, Jyoti Prakash Biswal, G. Karyan, A. K. Giri, J. F. Strube, M. Masuda, R. Kulasiri, M. Sumihama, V. Zhukova, V.M. Aulchenko, Shih-Chang Lee, Y. Watanabe, V. Gaur, V.E. Shebalin, S. Al Said, C. Schwanda, H. Ono, D. Epifanov, T. K. Pedlar, Y. Unno, R. Ayad, D. Y. Kim, J. B. Kim, T. Matsuda, G. Bonvicini, A. Vinokurova, S. H. Kim, P. Krokovny, Rakesh Kumar, K. H. Kang, and K. Cho
Subjects: 010308 nuclear & particles physics, Research council, 0103 physical sciences, General Physics and Astronomy, Library science, Christian ministry, 010306 general physics, National laboratory, 01 natural sciences
Abstract: We thank the KEKB group for excellent operation of the accelerator; the KEK cryogenics group for efficient solenoid operations; and the KEK computer group, the NII, and Pacific Northwest National Laboratory (PNNL)/Environmental Molecular Sciences Laboratory (EMSL) for valuable computing and Science Information NETwork 5 (SINET5) network support. We acknowledge support from Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan Society for the Promotion of Science (JSPS), and Nagoya's TLPRC (Japan); Australian Research Council (ARC) (Australia); FWF (Austria); National Natural Science Foundation of China (NSFC) and CAS Center for Excellence in Particle Physics (CCEPP) (China); MSMT (Czechia); CZF, Deutsche Forschungsgemeinschaft (DFG), EXC153, and VS (Germany); DST (India); Instituto Nazionale di Fisica Nucleare (INFN) (Italy); Ministry of Education (MOE), Ministry of Science, ICT and Future Planning (MSIP), National Research Foundation (NRF), RSRI, FLRFAS project, and GSDC of Korea Institute of Science and Technology Information (KISTI) (Korea); Ministerstwo Nauki i Szkolnictwa Wyzszego (MNiSW) and Narodowe Centrum Nauki (NCN) (Poland); MES under Contract No. 14.W03.31.0026 (Russia); ARRS (Slovenia); IKERBASQUE and Ministry of Economy and Competitiveness (MINECO) (Spain); SNSF (Switzerland); Ministry of Education (MOE) and Ministry of Science and Technology, Taiwan (MOST) (Taiwan); and U.S. Department of Energy (DOE) and National Science Foundation (NSF) (USA).
Published: 2018
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35. Observation of an Excited Ω− Baryon

Author: M. Iwasaki, U. Tamponi, R. Ayad, B. G. Cheon, Seema Bahinipati, M. Uchida, G.V. Russo, M. Niiyama, W. S. Hou, V. Vorobyev, E. Won, A. Kuzmin, S. Jia, V. Bhardwaj, L. E. Piilonen, Vikas Bansal, D. Y. Kim, E. Nakano, P. L. Wang, G. S. Varner, T. V. Dong, Y. Choi, S. Eidelman, R. Itoh, K. J. Nath, A. B. Kaliyar, T. Matsuda, H. K. Moon, J. S. Lange, S. Pardi, S. Uno, Elisa Guido, Yu. V. Usov, A. Bondar, C. H. Wang, Y. Sakai, B. G. Fulsom, Jyoti Prakash Biswal, G. Bonvicini, R. Mizuk, G. Schnell, C. Van Hulse, S. Al Said, S. Korpar, D. Kotchetkov, I. Adachi, S. Zakharov, Soumen Paul, K. Chilikin, H. Park, A. Bozek, S. E. Vahsen, J. B. Kim, J. Haba, S. H. Kim, P. Krokovny, H. Ye, T. Julius, J. G. Shiu, H. Atmacan, B. Bhuyan, Tara Nanut, D. Cinabro, Rakesh Kumar, T. Kuhr, C. Beleño, J. F. Strube, K. K. Joo, T. A. Shibata, H. Miyata, Phillip Urquijo, G. Inguglia, K. H. Kang, K. Cho, M. Takizawa, T. Uglov, G. B. Mohanty, Y. B. Li, F. Tenchini, V. Savinov, Y. Yusa, J. T. McNeil, D. Epifanov, D. Liventsev, A. Vossen, B. Pal, R. Mussa, H. Ono, T. Sumiyoshi, John Yelton, H. B. Jeon, Vladimir Zhulanov, Y. Jin, Z. Doležal, R. Kroeger, M. E. Sevior, I. S. Lee, A. Ishikawa, S. Hirose, Somnath Choudhury, C. Schwanda, Martin Ritter, M. Nakao, Massimo Berger, T. K. Pedlar, Peter Kodys, P. Goldenzweig, J. Libby, K. T. Kim, Frank Simon, W. W. Jacobs, D. M. Asner, M. Lubej, K. Hayasaka, Vladimir Popov, T. Sanuki, P. Križan, Tao Luo, K. Tanida, T. Bilka, S. K. Choi, X. L. Wang, V. Gaur, C. Z. Yuan, K. Suzuki, A. M. Bakich, N. Dash, S. Di Carlo, Linhu Li, Andrey Sokolov, M. Merola, G. Karyan, Y. Seino, V. Chekelian, M. Watanabe, T. E. Browder, S. Cunliffe, Y. Tao, T. Mori, H. Aihara, D. Greenwald, Shoichi Watanuki, A. K. Giri, P. Pakhlov, James E. Fast, N. Gabyshev, D. Červenkov, N. K. Nisar, K. Senyo, Bingran Wang, M. Masuda, Rocky Bala Garg, S. Nishida, Eberhard Widmann, D. Matvienko, Z. P. Zhang, Z. Natkaniec, V.E. Shebalin, L. Li Gioi, G. Pakhlova, E. Solovieva, C. Kiesling, M. Bračko, A. Garmash, C. P. Shen, V. Babu, T. Aushev, V.N. Zhilich, Y. Kato, K. Miyabayashi, I. Badhrees, J. K. Ahn, Shih-Chang Lee, B. Shwartz, V. Zhukova, Dipak Kumar Sahoo, Luka Santelj, M. Sumihama, K. Inami, S. Sandilya, Z. Drásal, M. Starič, M. Gelb, H. Hayashii, M. Z. Wang, K. Kinoshita, T. Czank, Y. Iwasaki, Y. J. Kwon, O. Schneider, A. Chen, and R. Pestotnik
Subjects: Baryon, Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Excited state, 0103 physical sciences, Quark model, Hyperon, General Physics and Astronomy, 010306 general physics, Omega baryon, 01 natural sciences
Abstract: Using data recorded with the Belle detector, we observe a new excited hyperon, an Ω*- candidate decaying into Ξ0K- and Ξ-KS0 with a mass of 2012.4±0.7(stat)±0.6(syst) MeV/c2 and a width of Γ=6.4-2.0+2.5(stat)±1.6(syst) MeV. The Ω*- is seen primarily in ϒ(1S),ϒ(2S), and ϒ(3S) decays.
Published: 2018
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36. Search for B−→μ−ν¯μ Decays at the Belle Experiment

Author: V. Zhukova, G. Inguglia, K. Sumisawa, P. Chang, S. Nishida, E. L. Barberio, D. Liventsev, Elisa Guido, Vikas Bansal, E. Nakano, V.E. Shebalin, Vladimir Zhulanov, Y. Jin, G. Schnell, T. Iijima, C. Van Hulse, Frank Simon, Y. Choi, K. J. Nath, S. Sandilya, Liangbin Li, J. Libby, M. E. Sevior, I. S. Lee, P. Goldenzweig, M. Starič, M. Lubej, K. Hayasaka, C. H. Li, U. Tamponi, T. Kuhr, Kevin Varvell, C. L. Hsu, M. Uchida, A. M. Bakich, Dipanwita Dutta, A. Rostomyan, A. B. Kaliyar, S. Al Said, Y. Iwasaki, Y. J. Kwon, R. Ayad, Y. Seino, O. Schneider, Andrey Sokolov, H. K. Moon, Seema Bahinipati, J. S. Lange, M. T. Hedges, Shoichi Watanuki, Z. Drásal, V. Chekelian, T. Mori, H. Aihara, D. Greenwald, A. Kuzmin, M. Nayak, Soumen Paul, S. Okuno, G. S. Varner, Yongsun Kim, A. Zupanc, C. H. Wang, S. Uno, C. Schwanda, T. Luo, S. Ogawa, James E. Fast, I. Jaegle, N. K. Nisar, J. Haba, N. Gabyshev, D. Červenkov, D. Y. Kim, Peter Kodys, R. Itoh, W. W. Jacobs, M. Merola, V. Gaur, A.L. Sibidanov, W. S. Hou, P. Pakhlov, S. Eidelman, Z. P. Zhang, B. Pal, Tara Nanut, K. K. Joo, Y. Guan, T. Uglov, B. G. Fulsom, Eberhard Widmann, K. Tanida, K. Senyo, J. Stypula, V. Vorobyev, Sadaharu Uehara, D. M. Asner, S. Di Carlo, E. Solovieva, G. Pakhlova, M. Watanabe, T. E. Browder, R. Mussa, C. Z. Yuan, Z. Natkaniec, M. Salehi, H. B. Jeon, G. B. Mohanty, A. Ishikawa, N. Dash, Y. Yamashita, Iki Adachi, G. Karyan, M. Nakao, H. Park, C. W. Park, A. Bozek, P. Križan, H. Ye, Jyoti Prakash Biswal, L. E. Piilonen, M. Rozanska, P. L. Wang, Y. Yusa, V.N. Zhilich, Meng Wang, E. Won, K. Chilikin, B. Bhuyan, J. B. Kim, Yuki Sato, T. Julius, K. Miyabayashi, I. Badhrees, R. Pestotnik, R. Kulasiri, C. Kiesling, V. Savinov, M. Sumihama, F. Tenchini, Yoshinobu Unno, T. Sumiyoshi, M. Takizawa, H. Ono, M. Bračko, L. Li Gioi, R. Mizuk, Martin Ritter, John Yelton, M. Masuda, A. Garmash, C. S. Park, S. Hirose, A. Chen, Z. Doležal, S. K. Choi, K. Trabelsi, J. Kahn, C. P. Shen, V. Babu, T. Aushev, T. Ferber, M. Niiyama, T. Matsuda, K. Inami, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, J. F. Strube, Y. Sakai, H. Hayashii, M. Iwasaki, B. G. Cheon, S. H. Kim, P. Krokovny, K. Kinoshita, T. Czank, Rakesh Kumar, K. H. Kang, K. Cho, S. Korpar, D. Epifanov, D. Kotchetkov, J. G. Shiu, T. Kawasaki, T. K. Pedlar, Phillip Urquijo, and D. Cinabro
Subjects: Physics, Particle physics, Muon, Missing energy, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, 01 natural sciences, Belle experiment, KEKB, 0103 physical sciences, High Energy Physics::Experiment, Neutrino, 010306 general physics, Bar (unit)
Abstract: We report the results of a search for the rare, purely leptonic decay B- -> mu(-)(nu) over bar (mu) performed with a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar pairs, collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B- -> mu(-)(nu) over bar (mu)) = (6.46 +/- 2.22 +/- 1.60) x 10(-7) or a frequentist 90% confidence level interval on the B- -> mu(-)(nu) over bar (mu) branching fraction of [2.9, 10.7] x 10(-7).
Published: 2018
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37. Search for ϒ(1S,2S)→Zc+Zc(′)− and e+e−→Zc+Zc(′)− at s=10.52 , 10.58, and 10.867 GeV

Author: Pavel Krokovny, Shih-Chang Lee, Suyong Choi, A. K. Giri, U. Tamponi, M. Starič, M. Sumihama, Motoki Iwasaki, B. Shwartz, S. Uno, K. Trabelsi, E. Nakano, Y. J. Kwon, J. Libby, D. M. Asner, C. Schwanda, D. Cinabro, C. P. Shen, M. Lubej, K. Hayasaka, R. Kroeger, M. E. Sevior, I. S. Lee, A. Garmash, S. Jia, Seok Kim, M. Masuda, Tagir Aushev, O. Schneider, G.V. Russo, A. Zupanc, V. M. Aulchenko, V. Bansal, K. Kinoshita, V. Babu, B. G. Fulsom, Meng Wang, Vladimir Popov, Y. Jin, R. Mussa, H. B. Jeon, J. B. Kim, S. Nishida, A. Ishikawa, M. Merola, S. Paul, T. Ferber, W. S. Hou, Y. Seino, B. G. Cheon, R. Kulasiri, Jyoti Prakash Biswal, Elisa Guido, G. Schnell, T. Iijima, J. E. Fast, Iki Adachi, P. Križan, V.E. Shebalin, M. Uchida, Z. Natkaniec, C. Z. Yuan, Doo Young Kim, K. Chilikin, Tara Nanut, S. Pardi, S. Okuno, Zhicai Zhang, T. Kuhr, V. Vorobyev, C. B. Van Hulse, L. K. Li, P. Goldenzweig, S. Sandilya, K. T. Kim, T.-A. Shibata, C. Beleño, Andrey Sokolov, G. Pakhlova, T. Uglov, J. Haba, D. Liventsev, T. Bilka, V. V. Zhulanov, M. Salehi, Tao Luo, V. Gaur, T. K. Pedlar, T. Kumita, T. Julius, M. Nakao, M. Watanabe, K. Inami, Semen Eidelman, M. T. Hedges, S. Korpar, Peter Kodys, W. W. Jacobs, J. MacNaughton, Chunjie Wang, S. Di Carlo, G. Karyan, Shigeki Hirose, T. Matsuda, L. Li Gioi, G. Inguglia, H. Aihara, T. Sumiyoshi, Young-Il Choi, Martin Ritter, R. Itoh, Phillip Urquijo, Kiyoshi Tanida, P. Wang, T. Sanuki, S. Ogawa, H. Miyata, Prafulla Kumar Behera, Y. B. Li, F. Tenchini, Somnath Choudhury, G. Varner, H. Hayashii, Hyunyong Kim, S. Zakharov, Z. Doležal, H. Ye, A. Vinokurova, J. G. Shiu, S. Cunliffe, P. Pakhlov, V.N. Zhilich, Y. Usov, M. Gelb, Bo Wang, H. Ono, I. Jaegle, K. Miyabayashi, I. Badhrees, K. Senyo, E. Won, T. Kawasaki, R. Mizuk, R. Pestotnik, H. K. Moon, J. S. Lange, M. Niiyama, Yang Li, M. Nayak, K. J. Nath, T. Hara, L. Santelj, Victoria Zhukova, R. Ayad, K. Cho, Y. Sakai, A. Chen, M. Takizawa, N. Dash, E. Solovieva, Leo Piilonen, A. Vossen, Frank Simon, D. Kotchetkov, Rocky Bala Garg, Eberhard Widmann, J. F. Strube, B. Bhuyan, V. Savinov, Samo Stanič, A. Rostomyan, X. L. Wang, V. Chekelian, B. K. Pal, C. Kiesling, M. Bračko, H. Park, A. Bozek, N. Gabyshev, D. Červenkov, and S. Al Said
Subjects: Physics, KEKB, Annihilation, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, Analytical chemistry, High Energy Physics::Experiment, 010306 general physics, 01 natural sciences
Abstract: The first search for double charged charmoniumlike state production in gamma (IS) and gamma (2S) decays and in e(+) e(-) annihilation at root s = 10.52, 10.58, and 10.867 GcV is conducted using data collected with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant signals are observed in any of the studied modes, and the 90% credibility level upper limits on their product branching fractions in gamma(1S) and gamma(2S) decays [B(gamma(1S, 2S) -> Z(c)(+)Z(c)((')-)) x B(Z(c)(+) -> pi(+) + c (c) over bar ) (c (c) over bar = J / psi, chi(c1) (1P), psi(2S))] and the product of Born cross section and branching fraction for e(+)e(-) -> Z(c)(+)Z(c)((')-)) (sigma(e(+)e(-) -> Z(c)(+)Z(c)((')-)) x B(Z(c)(+) -> pi(+) + c (c) over bar )) at root s = 10.52, 10.58, and 10.867 GeV are determined. Here, Z(c) refers to the Z(c) (3900) and Z(c) (4200) observed in the pi J/psi final state, the Z(c1)(4050) and Z(c2)(4250) in the pi chi(c1)(1P) final state, and the Z(c)(4050) and Z(c)(4430) in the pi psi(2S) final state.
Published: 2018
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38. Measurement of time-dependent CP asymmetries in B0→KS0ηγ decays

Author: U. Tamponi, S. Jia, Soumen Paul, H. Aihara, Tagir Aushev, Y. Jin, C. H. Wang, Elisa Guido, M. Iwasaki, R. Ayad, K. Cho, T. Hara, G. Schnell, T. Iijima, H. Ye, Y. Usov, Byung Gu Cheon, I. Jaegle, T. Matsuda, S. Uno, T. Bilka, V.M. Aulchenko, Jyoti Prakash Biswal, Leo Piilonen, M. Watanabe, T. Kuhr, R. Itoh, A. Vossen, A. B. Kaliyar, S. Pardi, Yang Li, H. K. Moon, J. G. Shiu, J. S. Lange, S. Korpar, Peter Kodys, W. W. Jacobs, Pavel Krokovny, Frank Simon, J. MacNaughton, V.E. Shebalin, Andrey Sokolov, H. J. Kim, S. H. Kim, Y. Choi, K. J. Nath, M. Uchida, L. Santelj, L. K. Li, T. Nanut, R. Kulasiri, A. J. Schwartz, Dipak Kumar Sahoo, B. Pal, K. Trabelsi, Z. P. Zhang, W. S. Hou, S. Okuno, S. Di Carlo, A. Rostomyan, C. P. Shen, M. Sumihama, V. Gaur, H. Ono, R. Mizuk, G. Karyan, C. Z. Yuan, Y. Sakai, V. Chekelian, V. Vorobyev, V. Babu, S. Sandilya, S. Cunliffe, Phillip Urquijo, K. Senyo, K. Chilikin, E. Solovieva, N. Dash, Vikas Bansal, T. Ferber, S. Ogawa, Z. Natkaniec, M. Gelb, T. K. Pedlar, T. Kumita, Y. B. Li, G. Varner, E. Widmann, James E. Fast, G. B. Mohanty, E. Nakano, F. Tenchini, V.N. Zhilich, C. Beleño, D. Kotchetkov, C. Van Hulse, Shih-Chang Lee, Iki Adachi, P. Pakhlov, M. T. Hedges, Doo Young Kim, Y. Yusa, S. Al Said, Hitoshi Yamamoto, G. Inguglia, P. Wang, V. Zhukova, J. Haba, N. Gabyshev, D. Červenkov, Semen Eidelman, M. Takizawa, M. Salehi, K. Inami, Y. Iwasaki, Y. J. Kwon, R. Mussa, H. B. Jeon, K. Miyabayashi, J. B. Kim, E. Won, N. Shimizu, S. Nishida, R. Pestotnik, T. Uglov, O. Schneider, H. Nakano, I. Badhrees, G. Russo, H. Park, A. Ishikawa, Tao Luo, B. G. Fulsom, A. Bozek, C. Schwanda, Y. Seino, M. Nakao, A. K. Giri, K. Sumisawa, P. Križan, D. Cinabro, M. Nayak, C. Kiesling, Somnath Choudhury, B. Bhuyan, M. Masuda, S. Hirose, T. Kawasaki, Bingran Wang, T. Sumiyoshi, V. Savinov, J. Libby, D. M. Asner, M. Lubej, K. Hayasaka, J. F. Strube, M. Bračko, Xuejun Wang, Martin Ritter, B.A. Shwartz, Rocky Bala Garg, T. Sanuki, H. Hayashii, M. Starič, D. Liventsev, M. Z. Wang, K. Kinoshita, Vladimir Zhulanov, R. Kroeger, M. E. Sevior, I. S. Lee, P. Goldenzweig, Vladimir Popov, T. Julius, Samo Stanič, Kiyoshi Tanida, Z. Doležal, K. T. Kim, S. K. Choi, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, A. Garmash, S. Zakharov, A. Zupanc, M. Merola, Y. Guan, M. Niiyama, G. Pakhlova, and L. Li Gioi
Subjects: Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Detector, Resonance, 01 natural sciences, Symmetry (physics), law.invention, KEKB, law, 0103 physical sciences, CP violation, High Energy Physics::Experiment, Invariant mass, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, Collider, Astrophysics::Galaxy Astrophysics
Abstract: We report a measurement of time-dependent CP violation parameters in B0→KS0ηγ decays. The study is based on a data sample, containing 772×106BB¯ pairs, that was collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the CP violation parameters of S=-1.32±0.77(stat)±0.36(syst) and A=-0.48±0.41(stat)±0.07(syst) for the invariant mass of the KS0η system up to 2.1 GeV/c2.
Published: 2018
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39. Publisher’s Note: Search for B→hνν¯ decays with semileptonic tagging at Belle [Phys. Rev. D 96 , 091101(R) (2017)]

Author: G. Pakhlova, R. Kulasiri, Hirokazu Miyake, T. Julius, R. Chistov, F. Tenchini, T. Sumiyoshi, C. Pulvermacher, Martin Ritter, T. Sanuki, Z. Natkaniec, Yukinori Sato, M. Nayak, J. G. Shiu, Ya-Qiu Jin, A. Garmash, V. Bansal, Phillip Urquijo, R. Mussa, H. B. Jeon, M. T. Hedges, Y. B. Li, A. Ishikawa, A. Zupanc, V.E. Shebalin, S. Al Said, P. K. Behera, C. Z. Yuan, P. Križan, Y. Onuki, C. B. Van Hulse, S. Uno, C. Schwanda, A. M. Bakich, B. G. Cheon, G. Schnell, T. Iijima, Alexei Kuzmin, E. L. Barberio, N. Gabyshev, D. Červenkov, H. Yamamoto, Chawon Park, T.-A. Shibata, J. F. Strube, T. Kuhr, P. Goldenzweig, V. Vorobyev, C.-L. Hsu, S. Korpar, S. Sandilya, V. V. Zhulanov, M. J. Kim, N. Dash, R. Ayad, Peter Kodys, W. W. Jacobs, P. Katrenko, Victoria Zhukova, K. Inami, Felix Metzner, V. Babu, Y. Yook, T. Aushev, S. Di Carlo, G. Karyan, M. Starič, A. Chen, B. Shwartz, C. Kiesling, T. Ferber, T. Kumita, K. Chilikin, M. Masuda, H. Ono, K. K. Joo, G. B. Mohanty, D. Y. Kim, H. Hayashii, S. Wehle, Hyunyong Kim, M. Uchida, M. Bračko, Y. Yusa, M. Z. Wang, K. Kinoshita, A. B. Kaliyar, L. K. Li, R. Mizuk, H. Farhat, S. Ogawa, Y. Iwasaki, Y. Ushiroda, D. Liventsev, J. B. Kim, Y. Unno, Tariq Aziz, Y. J. Kwon, C. W. Park, E. Won, Y. Sakai, Seema Bahinipati, O. Schneider, Y. Choi, I. Adachi, K. J. Nath, G. S. Varner, T. Hara, L. Santelj, L. Pesántez, K. Trabelsi, Z. Drásal, J. Kahn, C. P. Shen, E. Waheed, Seok Kim, R. Itoh, A. Rostomyan, J. Grygier, P. Wang, D. Matvienko, E. Nakano, B. Golob, N. K. Nisar, H. K. Moon, H. Miyata, J. S. Lange, Bo Wang, M. Ziegler, T. Schlüter, Dipanwita Dutta, D. M. Asner, K. Hayasaka, A. Bobrov, C. H. Li, E. Solovieva, K. Senyo, Ihn Sik Seong, M. Heck, T. Kawasaki, S. Eidelman, Tara Nanut, T. Uglov, H. Park, A. Bozek, D. Kotchetkov, S. Nishida, V. Chekelian, B. K. Pal, Eleonora Guido, B. Bhuyan, B. G. Fulsom, T. E. Browder, V. Savinov, D. Joffe, A. Vossen, Frank Simon, Z. P. Zhang, Jyoti Prakash Biswal, S. Okuno, D. Cinabro, M. E. Sevior, V. Gaur, M. Lubej, G. Inguglia, P. Chang, M. Nakao, J. Libby, Y. Seino, M. T. Prim, Tao Luo, T. Mori, H. Aihara, L. Li Gioi, Y. Yamashita, Y. Watanabe, H. Kichimi, H. Ye, T. Tsuboyama, T. K. Pedlar, V.N. Zhilich, T. Matsuda, U. Tamponi, G. Bonvicini, J. Haba, I. Jaegle, K. Miyabayashi, I. Badhrees, P. Krokovny, K. H. Kang, K. Cho, M. Gelb, A.E. Bondar, O. Grzymkowska, C. H. Wang, M. Takizawa, T. Keck, A. J. Schwartz, S. Paul, K. M. Williams, J. E. Fast, Z. Doležal, K. T. Kim, R. Gillard, M. Watanabe, and L. E. Piilonen
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, 01 natural sciences
Published: 2018
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40. Measurement of the τ lepton polarization and R(D) in the decay B¯→Dτ−ν¯τ with one-prong hadronic τ decays at Belle

Author: H. Aihara, A. Rostomyan, K. Chilikin, R. Garg, T. Aziz, Takuya Higuchi, U. Tamponi, M. Sumihama, I. Badhrees, N. Gabyshev, B. G. Fulsom, S. Ogawa, I. S. Lee, C. Z. Yuan, Iki Adachi, T. Kawasaki, M. T. Hedges, J. Haba, Doo Young Kim, V. Zhulanov, E. Widmann, D. M. Asner, M. Lubej, K. Hayasaka, M. Uchida, T. E. Browder, P. Chang, A. Bozek, S. Uno, V. Babu, S. Di Carlo, J. Libby, K. E. Varvell, Kiyoshi Tanida, S. H. Kim, S. Hirose, J. F. Strube, A. Zupanc, G. Karyan, Tagir Aushev, Y. Guan, Meng Wang, M. Iwasaki, Y. Yusa, M. Salehi, G. Schnell, T. Czank, V. Gaur, S. Sandilya, Pavel Krokovny, P. Kodyš, R. Mussa, A. J. Schwartz, C. Van Hulse, S. K. Choi, P. Goldenzweig, Z. Doležal, J. G. Shiu, N. Dash, E. Solovieva, H. Yamamoto, Y. Jin, E. Won, H. Ono, S. Nishida, Y. Choi, G. Varner, Anjan K. Giri, H. Ye, K. Hara, V. Popov, K. Adamczyk, C. H. Wang, V. Bhardwaj, H. Atmacan, J. E. Fast, Leo Piilonen, Kouji Nakamura, N. K. Nisar, B. Golob, G. B. Mohanty, Y-J Kwon, M. Starič, M. E. Sevior, M. Berger, Z. Natkaniec, V. Zhukova, Y. Sato, K. H. Kang, A. Vossen, N. Shimizu, X. L. Wang, V. Shebalin, T. Uglov, M. Rozanska, A. Bondar, A. Sokolov, R. Kroeger, Jyoti Prakash Biswal, S. Wehle, F. Tenchini, Soumya D. Mohanty, Frank Simon, V. Zhilich, P. Križan, T. Ferber, K. Senyo, P. Wang, K. Kinoshita, S. Al Said, T. Kuhr, R. Pestotnik, R. Kulasiri, K. Miyabayashi, R. Kumar, A. M. Bakich, T. Matsuda, T. A. Shibata, Takao Mori, Samo Korpar, J. Stypula, D. Dutta, R. Ayad, Y. J. Kim, E. Guido, K. Cho, S. Paul, C. W. Park, T. Sumiyoshi, B. Bhuyan, K. J. Nath, I. Jaegle, Wei-Shu Hou, C. Schwanda, Junho Kim, T. Julius, D. Cinabro, D. Červenkov, A. Garmash, A. Kuzmin, M. Niiyama, M. Gelb, J. S. Lange, K. Trabelsi, V. Bansal, V. Vorobyev, L. Li Gioi, H. K. Moon, Zhengkang Zhang, A. Chen, T. Nanut, D. Kotchetkov, Toru Iijima, R. Itoh, D. Liventsev, Semen Eidelman, P. Urquijo, K. Sumisawa, H. B. Jeon, B. Pal, A. Ishikawa, H. Park, Y. Seino, M. Nakao, M. C. Chang, C. L. Hsu, O. Schneider, H. Miyata, K. Inami, Y. Yamashita, B. G. Cheon, V. Chekelian, S. Okuno, H. Hayashii, S. Zakharov, L. K. Li, Yang Li, Y. Sakai, Sayantan Choudhury, M. Takizawa, G. Inguglia, M. Bračko, M. Ritter, and S. Pardi
Subjects: Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Polarization (waves), 01 natural sciences, KEKB, Full data, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: With the full data sample of $772\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }B\overline{B}$ pairs recorded by the Belle detector at the KEKB electron-positron collider, the decay $\overline{B}\ensuremath{\rightarrow}{D}^{*}{\ensuremath{\tau}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}}$ is studied with the hadronic $\ensuremath{\tau}$ decays ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\nu}}_{\ensuremath{\tau}}$ and ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{\ensuremath{-}}{\ensuremath{\nu}}_{\ensuremath{\tau}}$. The $\ensuremath{\tau}$ polarization ${P}_{\ensuremath{\tau}}({D}^{*})$ in two-body hadronic $\ensuremath{\tau}$ decays is measured, as well as the ratio of the branching fractions $R({D}^{*})=\mathcal{B}(\overline{B}\ensuremath{\rightarrow}{D}^{*}{\ensuremath{\tau}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}})/\mathcal{B}(\overline{B}\ensuremath{\rightarrow}{D}^{*}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}})$, where ${\ensuremath{\ell}}^{\ensuremath{-}}$ denotes an electron or a muon. Our results, ${P}_{\ensuremath{\tau}}({D}^{*})=\ensuremath{-}0.38\ifmmode\pm\else\textpm\fi{}0.51{(\text{stat})}_{\ensuremath{-}0.16}^{+0.21}(\text{syst})$ and $R({D}^{*})=0.270\ifmmode\pm\else\textpm\fi{}0.035{(\text{stat})}_{\ensuremath{-}0.025}^{+0.028}(\text{syst})$, are consistent with the theoretical predictions of the standard model. The polarization values of ${P}_{\ensuremath{\tau}}({D}^{*})g+0.5$ are excluded at the 90% confidence level.
Published: 2018
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41. Search for light tetraquark states in ϒ(1S) and ϒ(2S) decays

Author: A. Vossen, O. Seon, S. Jia, Yang Li, A. M. Bakich, Z. Natkaniec, C. Kiesling, M. Bračko, O. Grzymkowska, C. H. Wang, Y. Choi, K. J. Nath, N. Gabyshev, D. Červenkov, X. L. Wang, Y. Yamashita, H. Ye, J. G. Shiu, L. Santelj, Vikas Bansal, V. Babu, Rocky Bala Garg, Eberhard Widmann, E. Solovieva, T. Aushev, N. Dash, Y. Sakai, J. Libby, D. Kotchetkov, K. Hayasaka, S. Nishida, Phillip Urquijo, Shih-Chang Lee, A. Zupanc, G. Pakhlova, C. Van Hulse, T. Matsuda, S. Uno, Y. Seino, M. Watanabe, M. Uchida, K. Chilikin, K. T. Kim, K. Tanida, S. Pardi, L. K. Li, Y. Watanabe, G. Bonvicini, S. Okuno, Y. Yusa, T. Ferber, D. Joffe, V. Chekelian, Dipanwita Dutta, B. Pal, V. Bhardwaj, J. B. Singh, S. K. Choi, K. Inami, Massimo Berger, M. Nayak, Soumen Paul, V.E. Shebalin, J. Stypula, G.V. Russo, Y. Iwasaki, M. Iwasaki, Y. J. Kwon, B. G. Cheon, D. Cinabro, G. Schnell, T. Iijima, M. Z. Wang, S. H. Kim, P. Krokovny, G. S. Varner, U. Tamponi, T. Czank, T. Luo, L. Li Gioi, C. Z. Yuan, M. Lubej, K. K. Joo, G. Inguglia, V. Zhukova, A. Chen, A. Garmash, M. Merola, Eleonora Guido, A. Kuzmin, R. Mussa, H. Kichimi, V. Gaur, K. Cho, K. Senyo, A. Rostomyan, O. Schneider, R. Itoh, B. Bhuyan, P. Wang, Bingran Wang, D. Epifanov, B. G. Fulsom, S. Korpar, T. E. Browder, R. Kulasiri, S. Ogawa, B.A. Shwartz, W. S. Hou, M. Gelb, V.N. Zhilich, M. T. Hedges, M. Sumihama, S. Al Said, Noritaka Shimizu, A. Ishikawa, H. Hayashii, S. Sandilya, V. Savinov, S. Zakharov, D. Liventsev, M. Takizawa, T. Kawasaki, Vladimir Zhulanov, Y. Jin, M. Nakao, R. Kroeger, M. E. Sevior, I. S. Lee, Y. Onuki, M. Starič, I. Jaegle, K. Miyabayashi, I. Badhrees, T. Kumita, P. Goldenzweig, Z. Doležal, C. Schwanda, C. W. Park, P. Križan, P. Pakhlov, R. Pestotnik, D. Matvienko, J. K. Ahn, C. P. Shen, J. Haba, D. M. Asner, H. Park, A. Bozek, Andrey Sokolov, Tara Nanut, T. Uglov, James E. Fast, A. B. Kaliyar, H. K. Moon, J. S. Lange, L. E. Piilonen, T. Julius, F. Tenchini, T. Sumiyoshi, E. Won, Martin Ritter, T. Sanuki, H. Atmacan, M. C. Chang, M. Salehi, A. K. Giri, M. Masuda, R. Ayad, Seema Bahinipati, D. Y. Kim, H. Ono, R. Mizuk, Peter Kodys, Y. Unno, W. W. Jacobs, I. Adachi, J. B. Kim, S. Di Carlo, G. Karyan, M. Niiyama, S. L. Olsen, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, S.I. Eidelman, T. Hara, T. Mori, H. Aihara, Y. Usov, Jyoti Prakash Biswal, H. J. Kim, N. K. Nisar, I. Pavelkin, and Z. P. Zhang
Subjects: Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 0103 physical sciences, Hadron, Analytical chemistry, Tetraquark, Atomic physics, 010306 general physics, 01 natural sciences, Omega
Abstract: We search for the J(PC) = 0(--) and 1(+-) light tetraquark states with masses up to 2.46 GeV/c(2) in gamma(1S) and gamma(2S) decays with data samples of (102 +/- 2) million and (158 +/- 4) million events, respectively, collected with the Belle detector. No significant signals are observed in any of the studied production modes, and 90% credibility level (C. L.) upper limits on their branching fractions in Upsilon(1S) and Upsilon(2S) decays are obtained. The inclusive branching fractions of the Upsilon(1S) and Upsilon(2S) decays into final states with f(1)(1285) are measured to be B(Upsilon(1S) -> f(1)(1285) + anything) = (46 +/- 28(stat) +/- 13(syst)) x 10(-4) and B(Upsilon(2S) -> f(1)(1285) + anything) = (22 +/- 15(stat) +/- 6.3(syst)) x 10(-4). The measured chi(b2) -> J/Psi + anything branching fraction is measured to be (1.50 +/- 0.34(stat) +/- 0.22(syst)) x 10(-3), and 90% C. L. upper limits for the chi(b0;b1) -> J/Psi + anything branching fractions are found to be 2.3 x 10(-3) and 1.1 x 10(-3), respectively. For B(chi(b1) -> omega + anything), the branching fraction is measured to be (4.9 +/- 1.3(stat) +/- 0.6(syst) x 10(-2). All results reported here are the first measurements for these modes.
Published: 2017
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42. Measurement of the decays B→ηℓνℓ and B→η′ℓνℓ in fully reconstructed events at Belle

Author: L. Li Gioi, Y. Yamashita, K. Kinoshita, H. Ye, E. Nakano, B. G. Cheon, Meng Wang, S. Al Said, J. G. Shiu, Phillip Urquijo, U. Tamponi, Y. B. Li, C. B. Van Hulse, Y. Sakai, S. Okuno, S. Korpar, Victoria Zhukova, P. Goldenzweig, S. Sandilya, H. Hayashii, G. Schnell, A. Chen, M. Masuda, C. H. Wang, S. Ogawa, T. Iijima, F. Tenchini, T. K. Pedlar, M. J. Kim, T. Sumiyoshi, J. E. Fast, N. Dash, E. Solovieva, S. Uno, M. T. Hedges, Martin Ritter, Kevin Varvell, C. Schwanda, H. Miyata, M. Starič, D. Kotchetkov, T. Sanuki, Y. J. Kim, L. E. Piilonen, R. Kulasiri, T.-A. Shibata, J. C. Dingfelder, V. Babu, T. Aushev, A. M. Bakich, D. Cinabro, A. Zupanc, M. Salehi, A. Frey, T. Ferber, M. E. Sevior, I. S. Lee, D. Joffe, G. Inguglia, V.N. Zhilich, Peter Kodys, T. Mori, H. Aihara, Y. Usov, V.E. Shebalin, Jyoti Prakash Biswal, Tao Luo, K. Tanida, N. Gabyshev, D. Červenkov, R. Chistov, A. Bobrov, R. Ayad, O. Seon, Frank Simon, S. Di Carlo, K. Inami, G. Karyan, Y. Watanabe, D. M. Asner, R. Pestotnik, J. Libby, M. Lubej, T. Nanut, K. Miyabayashi, V. Gaur, I. Badhrees, H. Ono, Y. Iwasaki, C. Beleño, D. Matvienko, Y. Seino, M. Nakao, M. Nayak, T. Uglov, Y. Unno, O. Schneider, M. Takizawa, Ya-Qiu Jin, M. Bračko, Eberhard Widmann, H. Farhat, John Yelton, Z. Doležal, J. B. Kim, K. T. Kim, R. Gillard, S. K. Choi, Z. P. Zhang, H. B. Jeon, A. Ishikawa, P. Križan, K. K. Joo, Chawon Park, Y. Choi, V. V. Zhulanov, K. J. Nath, T. Hara, Y. Yook, S. Nishida, B. K. Pal, S. Eidelman, D. Y. Kim, H. Park, T. Matsuda, B. Bhuyan, B. G. Fulsom, T. E. Browder, A. Vinokurova, P. Krokovny, K. H. Kang, K. Cho, M. Uchida, D. Liventsev, G. S. Varner, R. Itoh, P. Wang, K. Senyo, W. S. Hou, V. Vorobyev, C. W. Park, E. Won, H. K. Moon, A. Garmash, V. Bansal, and P. K. Behera
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Eta meson, 01 natural sciences, Belle experiment, KEKB, 0103 physical sciences, High Energy Physics::Experiment, B meson, Nuclear Experiment, 010306 general physics, Lepton
Abstract: We report branching fraction measurements of the decays B+ -> eta l(+)v(l) and B+ -> eta'l(+)v(l) based on 711 fb(-1) of data collected near the (sic)(4S) resonance with the Belle experiment at the KEKB asymmetric-energy e(+)e(-) collider. This data sample contains 772 million B (B) over bar events. One of the two B mesons is fully reconstructed in a hadronic decay mode. Among the remaining ("signal-B") daughters, we search for the eta meson in two decay channels, eta -> gamma gamma and eta -> pi(+)pi(-)pi(0), and reconstruct the eta' meson in eta' -> eta pi(+)pi(-) with subsequent decay of the eta into gamma gamma Combining the two. modes and using an extended maximum likelihood, the B+ -> eta l(+)v(l) branching fraction is measured to be (4.2 +/- 1.1 (stat.) +/- 0.3 (syst.)) x 10(-5). For B+ -> eta l(+)v(l),we observe no significant signal and set an upper limit of 0.72 x 10(-4) at 90% confidence level.
Published: 2017
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43. Search for B→hνν¯ decays with semileptonic tagging at Belle

Author: Jyoti Prakash Biswal, Chawon Park, Tao Luo, V. V. Zhulanov, Tariq Aziz, Y. Yook, Elisa Guido, G. Schnell, A. Garmash, J. Libby, M. Lubej, B. G. Cheon, D. Y. Kim, H. Ono, B. Bhuyan, B. G. Fulsom, R. Mussa, H. B. Jeon, A. Ishikawa, T. E. Browder, Seema Bahinipati, M. Z. Wang, K. Kinoshita, P. Križan, M. Uchida, V. Gaur, L. K. Li, Y. Choi, K. J. Nath, T. Hara, L. Santelj, M. Nakao, D. Liventsev, J. E. Fast, V. Bansal, T. Kuhr, Y. Seino, Y. Iwasaki, M. T. Prim, Y. Sakai, A. J. Schwartz, Y. J. Kwon, Y. Watanabe, M. Masuda, A.E. Bondar, Z. Natkaniec, G. B. Mohanty, G. S. Varner, H. Kichimi, Toru Iijima, M. T. Hedges, O. Schneider, V. Savinov, D. Cinabro, S. Wehle, T. K. Pedlar, G. Inguglia, T. Tsuboyama, Y. Unno, K. Trabelsi, R. Itoh, M. Takizawa, P. K. Behera, K. M. Williams, K. Chilikin, R. Ayad, A. Zupanc, P. Chang, J. Kahn, P. Wang, P. Goldenzweig, C. P. Shen, S. Sandilya, Seok Kim, M. J. Kim, S. Korpar, S. Eidelman, M. Starič, Z. Doležal, C.-L. Hsu, T. Kumita, Y. Yusa, H. Farhat, T. Matsuda, J. B. Kim, V. Babu, D. M. Asner, Peter Kodys, C. B. Van Hulse, V.E. Shebalin, C. Z. Yuan, T. Aushev, W. W. Jacobs, P. Katrenko, Yukinori Sato, S. Al Said, Z. P. Zhang, S. Okuno, T. Nanut, H. Hayashii, Hyunyong Kim, J. G. Shiu, G. Bonvicini, S. Di Carlo, Phillip Urquijo, H. Park, T. Ferber, A. Bozek, G. Karyan, Y. B. Li, M. Watanabe, J. Haba, M. Gelb, Felix Metzner, R. Mizuk, P. Krokovny, S. Nishida, V.N. Zhilich, N. Dash, L. Li Gioi, T.-A. Shibata, K. H. Kang, K. Cho, E. Nakano, E. Solovieva, Y. Yamashita, A. Kuzmin, H. Yamamoto, A. Rostomyan, K. T. Kim, K. Senyo, Ihn Sik Seong, V. Chekelian, K. K. Joo, R. Gillard, S. Ogawa, T. Mori, H. Aihara, M. Heck, I. Adachi, S. Uno, T. Kawasaki, M. E. Sevior, B. K. Pal, C. Schwanda, E. Waheed, V. Vorobyev, T. Schlüter, Dipanwita Dutta, H. Ye, Victoria Zhukova, I. Jaegle, D. Joffe, C. H. Li, K. Miyabayashi, A. Chen, I. Badhrees, A. Vossen, K. Inami, Z. Drásal, Frank Simon, U. Tamponi, T. Uglov, B. Golob, N. K. Nisar, H. K. Moon, D. Kotchetkov, J. S. Lange, O. Grzymkowska, C. H. Wang, M. Ziegler, T. Keck, M. Nayak, S. Paul, A. B. Kaliyar, C. W. Park, E. Won, Ya-Qiu Jin, Y. Onuki, E. L. Barberio, Y. Ushiroda, B. Shwartz, L. Pesántez, J. Grygier, H. Miyata, Bo Wang, K. Hayasaka, A. Bobrov, L. E. Piilonen, G. Pakhlova, R. Kulasiri, T. Julius, R. Chistov, D. Matvienko, Hirokazu Miyake, F. Tenchini, T. Sumiyoshi, C. Pulvermacher, Martin Ritter, T. Sanuki, A. M. Bakich, N. Gabyshev, D. Červenkov, J. F. Strube, C. Kiesling, and M. Bračko
Subjects: Physics, Semileptonic decay, Particle physics, KEKB, Meson, 010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, 01 natural sciences
Abstract: We present the results of a search for the rare decays $B\ensuremath{\rightarrow}h\ensuremath{\nu}\overline{\ensuremath{\nu}}$, where $h$ stands for ${K}^{+},{K}_{\mathrm{S}}^{0},\phantom{\rule{0ex}{0ex}}{{K}^{*}}^{+},{{K}^{*}}^{0},{\ensuremath{\pi}}^{+},{\ensuremath{\pi}}^{0},{\ensuremath{\rho}}^{+}$ and ${\ensuremath{\rho}}^{0}$. The results are obtained with $772\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }B\overline{B}$ pairs collected with the Belle detector at the KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider. We reconstruct one $B$ meson in a semileptonic decay and require a single $h$ meson but nothing else on the signal side. We observe no significant signal and set upper limits on the branching fractions. The limits set on the ${B}^{0}\ensuremath{\rightarrow}{K}_{\mathrm{S}}^{0}\ensuremath{\nu}\overline{\ensuremath{\nu}}$, ${B}^{0}\ensuremath{\rightarrow}{{K}^{*}}^{0}\ensuremath{\nu}\overline{\ensuremath{\nu}}$, ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}\ensuremath{\nu}\overline{\ensuremath{\nu}}$, ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}\ensuremath{\nu}\overline{\ensuremath{\nu}}$, ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{+}\ensuremath{\nu}\overline{\ensuremath{\nu}}$, and ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{0}\ensuremath{\nu}\overline{\ensuremath{\nu}}$ channels are the world's most stringent.
Published: 2017
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44. Evidence for Isospin Violation and Measurement of CP Asymmetries in B→K*(892)γ

Author: D. Liventsev, Vladimir Zhulanov, Y. Jin, M. E. Sevior, P. Goldenzweig, B. G. Cheon, Tsuyoshi Horiguchi, L. E. Piilonen, K. Tanida, J. Haba, K. T. Kim, Y. Choi, K. J. Nath, R. Gillard, C. Pulvermacher, T. E. Browder, R. Itoh, T. Matsuda, S. Uno, M. T. Hedges, J. Libby, Takeo Higuchi, M. Lubej, K. Hayasaka, C. H. Li, G. Bonvicini, Elisa Guido, Y. Yamashita, Z. Drásal, S. Eidelman, A. Vinokurova, S. Korpar, G. Schnell, T. Iijima, D. Kotchetkov, Y. Sakai, V. Gaur, H. Ye, Y. Watanabe, S. H. Kim, P. Krokovny, Rakesh Kumar, Y. Iwasaki, Jyoti Prakash Biswal, T. Julius, W. S. Hou, R. Mussa, K. H. Kang, K. Cho, T. Kuhr, H. B. Jeon, Y. Seino, K. Prasanth, Y. J. Kwon, H. Park, A. Bozek, A. Ishikawa, M. Z. Wang, D. Epifanov, K. Kinoshita, T. A. Shibata, A. Zupanc, O. Schneider, H. Miyata, M. Nakao, T. Czank, Peter Kodys, Prafulla Kumar Behera, P. Križan, W. W. Jacobs, T. K. Pedlar, V. Vorobyev, T. Weber, Soumen Paul, V.N. Zhilich, Eberhard Widmann, B. Pal, Victoria Zhukova, A. Bobrov, S. Al Said, A. Chen, D. Matvienko, Saraju P. Mohanty, J. G. Shiu, K. Miyabayashi, I. Badhrees, M. Uchida, Liangbin Li, A. Rostomyan, Phillip Urquijo, V. Chekelian, S. Di Carlo, R. Pestotnik, V. Bhardwaj, B. Bhuyan, G. S. Varner, J. Rauch, T. Luo, V. M. Aulchenko, S. Watanuki, V. Savinov, F. Tenchini, A. M. Bakich, A. Vossen, Yu. V. Usov, R. Kulasiri, B. G. Fulsom, K. Sumisawa, T. Sumiyoshi, U. Tamponi, Frank Simon, A. J. Schwartz, N. Gabyshev, D. Červenkov, D. Cinabro, T. Hara, M. Masuda, T. Mori, H. Aihara, G. Inguglia, Ihn Sik Seong, S. Jia, T. Kawasaki, S. Hirose, N. Dash, J. F. Strube, C. H. Wang, H. Farhat, H. Hayashii, Luka Santelj, S. Pardi, S. Okuno, K. Inami, G. B. Mohanty, N. K. Nisar, D. Joffe, Y. Guan, Z. P. Zhang, Y. Ushiroda, M. Bračko, L. Li Gioi, K. K. Joo, E. Won, M. Takizawa, V. Babu, T. Aushev, G. Pakhlova, Z. Doležal, Hitoshi Yamamoto, T. Ferber, I. Adachi, I. Jaegle, B. Golob, M. Merola, H. K. Moon, A. Garmash, J. S. Lange, C. S. Park, M. Nayak, K. Senyo, Vikas Bansal, J. B. Kim, E. Nakano, C. Van Hulse, P. Pakhlov, Dipanwita Dutta, K. Trabelsi, C. P. Shen, Yongsun Kim, C. Schwanda, V.E. Shebalin, D. M. Asner, P. L. Wang, Andrey Sokolov, James E. Fast, R. Mizuk, K. Chilikin, S. Nishida, Yoshinobu Unno, Z. Natkaniec, T. Uglov, S. Sandilya, M. J. Kim, M. Starič, M. Gelb, T. Kumita, E. Solovieva, H. Ono, T. Nanut, A. Kuzmin, S. Ogawa, R. Ayad, and D. Y. Kim
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, Sigma, 01 natural sciences, Nuclear physics, KEKB, Isospin, 0103 physical sciences, CP violation, B meson, 010306 general physics
Abstract: We report the first evidence for isospin violation in B -> K*gamma and the first measurement of the difference of CP asymmetries between B+->.K*(+)gamma and B-0 -> K-*0 gamma. This analysis is based on the data sample containing 772 x 10(6)BB pairs that was collected with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We find evidence for the isospin violation with a significance of 3.1 sigma, Delta(0+) = [+6.2 +/- 1.5(stat) +/- 0.6(syst) +/- 1.2(f (+-)/f(00))] %, where the third uncertainty is due to the uncertainty on the fraction of B+B- to (BB0)-B-0 production in gamma(4S) decays. The measured value is consistent with predictions of the standard model. The result for the difference of CP asymmetries is Delta A(CP) = [+2.4 +/- 2.8(stat) +/- 0.5(syst)] %, consistent with zero. The measured branching fractions and CP asymmetries for charged and neutral B meson decays are the most precise to date. We also calculate the ratio of branching fractions of B-0 -> K-*0 gamma to B-s(0) -> phi gamma.
Published: 2017
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45. Search for CP Violation and Measurement of the Branching Fraction in the Decay D0→KS0KS0

Author: S. Al Said, K. Sumisawa, Andrey Sokolov, Saraju P. Mohanty, M. Masuda, M. T. Hedges, Yongsun Kim, C. Schwanda, Luka Santelj, Liangbin Li, S. Eidelman, V. Chekelian, M. C. Chang, T. A. Shibata, D. Epifanov, H. Park, A. Bozek, H. Miyata, M. Uchida, B. Bhuyan, Yuki Sato, V. Savinov, R. Mizuk, Victoria Zhukova, V. Bhardwaj, N. K. Nisar, L. E. Piilonen, P. Katrenko, A. Zupanc, A. J. Schwartz, James E. Fast, A. Bobrov, H. Ono, K. M. Williams, K. Inami, Yang Li, Y. Choi, K. J. Nath, A. Chen, T. K. Pedlar, V. Babu, G. Schnell, T. Iijima, E. Won, G. S. Varner, T. Luo, A. Rostomyan, Yu. V. Usov, Z. P. Zhang, Y. Iwasaki, T. Julius, J. G. Shiu, T. Kuhr, K. Chilikin, M. Merola, B. Pal, C. Kiesling, M. Niiyama, L. Pesántez, T. Aushev, Y. Yook, Y. Sakai, Y. J. Kwon, T. Ferber, M. Z. Wang, K. Kinoshita, B. G. Fulsom, S. Uno, V.E. Shebalin, D. M. Asner, G. Pakhlova, Y. Unno, Peter Kodys, W. W. Jacobs, J. Stypula, L. Li Gioi, A. Garmash, C. S. Park, G. Bonvicini, F. Tenchini, G. B. Mohanty, O. Schneider, R. Ayad, Seema Bahinipati, S. Di Carlo, Y. Yusa, K. Senyo, T. Sumiyoshi, M. Bračko, C. Z. Yuan, V.N. Zhilich, G. Karyan, Phillip Urquijo, Jyoti Prakash Biswal, R. Pestotnik, Vikas Bansal, D. Joffe, A. B. Kaliyar, H. K. Moon, Martin Ritter, J. S. Lange, P. L. Wang, S. H. Kim, P. Krokovny, E. Nakano, T. Sanuki, Rakesh Kumar, V. Gaur, D. Y. Kim, Z. Drásal, K. Cho, Soumen Paul, W. S. Hou, J. F. Strube, K. Trabelsi, J. Kahn, I. Jaegle, K. Miyabayashi, I. Badhrees, C. P. Shen, C. Van Hulse, R. Mussa, A. M. Bakich, H. Hayashii, H. B. Jeon, I. Adachi, V. Vorobyev, K. K. Joo, A. Ishikawa, M. Nakao, F. Breibeck, S. Sandilya, P. Križan, Dipanwita Dutta, J. B. Kim, H. J. Kim, T. Kawasaki, M. J. Kim, H. Farhat, B. G. Cheon, N. Gabyshev, D. Červenkov, M. Starič, T. Kumita, R. Itoh, Eberhard Widmann, A. Bondar, S. Korpar, D. Matvienko, D. Kotchetkov, T. Hara, T. Mori, H. Aihara, V. M. Aulchenko, E. L. Barberio, R. Kulasiri, M. Takizawa, Y. Watanabe, B. Shwartz, John Yelton, Z. Doležal, K. T. Kim, R. Gillard, J. Libby, K. Hayasaka, C. H. Li, Y. Seino, D. Cinabro, M. Lubej, S. Pardi, S. Okuno, M. Watanabe, T. E. Browder, U. Tamponi, C. H. Wang, Y. Yamashita, H. Ye, K. Prasanth, H. Sahoo, Tara Nanut, T. Uglov, A. Kuzmin, S. Ogawa, E. Waheed, S. Nishida, N. Dash, Z. Natkaniec, K. Tanida, M. Nayak, P. Pakhlov, J. Haba, D. Liventsev, Vladimir Zhulanov, Y. Jin, M. E. Sevior, I. S. Lee, P. Goldenzweig, E. Solovieva, A. Vossen, and Frank Simon
Subjects: Physics, 010308 nuclear & particles physics, Branching fraction, media_common.quotation_subject, Electron–positron annihilation, Analytical chemistry, General Physics and Astronomy, 01 natural sciences, Asymmetry, law.invention, Standard Model, KEKB, law, 0103 physical sciences, CP violation, 010306 general physics, Collider, media_common
Abstract: We report a study of the decay D-0 -> (KSKS0)-K-0 using 921 fb(-1) of data collected at or near the (sic)(4S) and (sic)(5S) resonances with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. The measured time-integrated CP asymmetry is A(CP)(D-0 -> (KSKS0)-K-0) = (-0.02 +/- 1.53 +/- 0.02 +/- 0.17)%, and the branching fraction is B(D-0 -> (KSKS0)-K-0) = (1.321 +/- 0.023 +/- 0.036 +/- 0.044) x 10(-4), where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D-0 -> K-S(0)pi(0)). These results are significantly more precise than previous measurements available for this mode. The A(CP) measurement is consistent with the standard model expectation.
Published: 2017
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46. Study of η and dipion transitions in ϒ(4S) decays to lower bottomonia

Author: T. Aushev, A. M. Bakich, D. Cinabro, Z. Natkaniec, K. T. Kim, R. Gillard, E. Widmann, S. K. Choi, G. Inguglia, V. Zhukova, N. Gabyshev, D. Červenkov, D. Epifanov, X. L. Wang, T. Ferber, K. Chilikin, T. K. Pedlar, K. Tanida, T. Matsuda, V.N. Zhilich, S. Uno, A. Vinokurova, S. H. Kim, P. Krokovny, K. H. Kang, K. Cho, B. Bhuyan, S. Pardi, M. T. Hedges, S. Watanuki, K. Inami, M. Uchida, V.E. Shebalin, K. K. Joo, T. E. Browder, Elisa Guido, A.E. Bondar, A. Garmash, E. Won, D. Matvienko, R. Mussa, V. Bhardwaj, E. Solovieva, M. Takizawa, H. B. Jeon, C. S. Park, K. Miyabayashi, I. Badhrees, A. Bobrov, V. Savinov, A. Ishikawa, Z. Doležal, D. M. Asner, K. Kinoshita, U. Tamponi, M. Nakao, V. Gaur, G. S. Varner, M. Watanabe, T. Luo, Vikas Bansal, G. Schnell, T. Iijima, S. Sandilya, P. Križan, Soumen Paul, J. Libby, P. Pakhlov, M. Lubej, K. Hayasaka, C. H. Li, B.A. Shwartz, E. Nakano, M. J. Kim, T. Nanut, W. S. Hou, R. Pestotnik, Y. Yamashita, Philip Lewis, P. Wang, M. Starič, M. Gelb, C. Van Hulse, Andrey Sokolov, Z. Drásal, M. Bračko, D. Liventsev, D. Kotchetkov, H. Ye, Y. Seino, B. G. Fulsom, H. Park, A. Bozek, T. A. Shibata, Vladimir Zhulanov, Y. Jin, T. Kumita, V. Vorobyev, M. E. Sevior, H. Farhat, B. Pal, H. Miyata, Prafulla Kumar Behera, S. Al Said, P. Goldenzweig, G. Pakhlova, James E. Fast, C. Z. Yuan, K. Trabelsi, C. P. Shen, A. Kuzmin, S. Ogawa, J. F. Strube, H. Hayashii, Liangbin Li, S. Nishida, S.I. Eidelman, S. Jia, D. Joffe, A. Rostomyan, V. Chekelian, A. Vossen, T. Kawasaki, Y. Iwasaki, Y. J. Kwon, C. H. Wang, H. K. Moon, J. S. Lange, Frank Simon, R. Itoh, J. Haba, Y. Choi, K. J. Nath, L. Santelj, M. Nayak, O. Schneider, Y. Sakai, L. Li Gioi, T. Uglov, Yongsun Kim, Byung Gu Cheon, I. Jaegle, K. M. Williams, M. Merola, A. Chen, C. Schwanda, K. Senyo, S. Korpar, A. Zupanc, J. G. Shiu, M. Niiyama, F. Tenchini, T. Sumiyoshi, C. Pulvermacher, Martin Ritter, T. Sanuki, L. E. Piilonen, Y. Watanabe, N. Dash, T. Julius, V.M. Aulchenko, R. Kulasiri, Jyoti Prakash Biswal, Peter Kodys, W. W. Jacobs, S. Di Carlo, G. Karyan, Yoshinobu Unno, K. Sumisawa, M. Masuda, T. Hara, T. Mori, H. Aihara, Y. Usov, N. K. Nisar, Z. P. Zhang, I. Adachi, J. B. Kim, R. Ayad, D. Y. Kim, H. Ono, and R. Mizuk
Subjects: Physics, KEKB, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Hadron, Pi, Analytical chemistry, Resonance, 010306 general physics, 01 natural sciences
Abstract: We study hadronic transitions between bottomonium states using 496 fb(-1) data collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We measure: B(gamma(4S) -> pi(+)pi(-)gamma(1S)) = (8.2 +/- 0.5(stat.)+/- 0.4(syst.)) x 10(-5), B(gamma(4S) -> pi(+)pi(-)gamma(2S)) = (7.9 +/- 1.0(stat.)+/- 0.4(syst.)) x 10(-5), and B(gamma(4S) -> eta gamma(1S)) = (1.70 +/- 0.23(stat.) +/- 0.08(syst.)) x 10(-4). We measure the ratio of branching fractions R=B(gamma(4S) -> eta gamma(1S))/B(gamma(4S) -> pi(+)pi(-)gamma(1S)) = 2.07 +/- 0.30(stat.)+/- 0.11(syst.). We search for the decay gamma(1(3)D(1,2)) -> eta gamma(1S), but do not find significant evidence for such a transition. We also measure the initial state radiation production cross sections of the gamma(2S,3S) resonances and we find values compatible with the expected ones. Finally, the analysis of the gamma(4S) -> pi(+)pi(-)gamma(1S) events shows indications for a resonant contribution due to the f(0)(980) meson.
Published: 2017
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47. Search for Λc+→ϕpπ0 and branching fraction measurement of Λc+→K−π+pπ0

Author: K. Chilikin, K. Inami, M. Z. Wang, K. Kinoshita, U. Tamponi, J. F. Strube, H. Hayashii, T. A. Shibata, H. Miyata, Elisa Guido, Prafulla Kumar Behera, S.I. Eidelman, G. Schnell, Jyoti Prakash Biswal, T. Kuhr, V.N. Zhilich, B. G. Cheon, M. Niiyama, I. Adachi, K. T. Kim, K. Miyabayashi, I. Badhrees, M. Bračko, R. Itoh, T. Aushev, J. B. Kim, S. K. Choi, S. Korpar, P. Pakhlov, T. Ferber, S. Ogawa, Gagan Bihari Mohanty, A. J. Schwartz, Andrey Sokolov, J. G. Shiu, S. Nishida, H. Ono, R. Mizuk, D. Matvienko, A. M. Bakich, A. Zupanc, A. Bozek, M. Takizawa, R. Mussa, H. B. Jeon, E. Widmann, M. Uchida, A. Ishikawa, D. M. Asner, M. Nayak, S. Uno, M. Nakao, N. Gabyshev, D. Červenkov, John Yelton, V. Bhardwaj, Z. Doležal, R. Kulasiri, T. Nanut, M. Sumihama, Vikas Bansal, K. Tanida, E. Nakano, A. Vinokurova, A. Chen, G. S. Varner, T. Luo, Y. Yamashita, Liangbin Li, A. Rostomyan, Y. J. Kwon, C. Van Hulse, Z. Drásal, B. Pal, V. Chekelian, Massimo Berger, S. H. Kim, P. Krokovny, H. Ye, B. G. Fulsom, O. Schneider, Peter Kodys, T. Uglov, W. W. Jacobs, C. Z. Yuan, R. Ayad, Soumen Paul, K. Cho, T. E. Browder, A. Bobrov, S. Di Carlo, D. Liventsev, Y. Watanabe, S. Sandilya, D. Cinabro, V. Savinov, Vladimir Zhulanov, Y. Jin, M. E. Sevior, G. Karyan, I. Jaegle, D. Y. Kim, P. Goldenzweig, M. Starič, M. Merola, M. Watanabe, K. Senyo, R. Pestotnik, S. Jia, V. Zhukova, C. H. Wang, T. K. Pedlar, V. Gaur, D. Joffe, Y. Kato, Yang Li, Y. Choi, K. J. Nath, L. Santelj, Y. Sakai, S. Pardi, S. Al Said, Yongsun Kim, C. Schwanda, J. Libby, M. Lubej, K. Hayasaka, C. H. Li, C. L. Hsu, Y. Seino, Shoichi Watanuki, K. K. Joo, E. Won, H. K. Moon, W. S. Hou, V. Vorobyev, J. MacNaughton, L. E. Piilonen, Z. P. Zhang, Kevin Varvell, T. Hara, T. Mori, H. Aihara, F. Tenchini, T. Sumiyoshi, Martin Ritter, T. Sanuki, X. L. Wang, E. Solovieva, Frank Simon, N. Dash, G. Pakhlova, D. Kotchetkov, L. Li Gioi, A. Garmash, and C. S. Park
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Analytical chemistry, Lambda, 01 natural sciences, Belle experiment, Luminosity, Charmed baryons, KEKB, 0103 physical sciences, Pi, 010306 general physics
Abstract: We have searched for the Cabibbo-suppressed decay Lambda(+)(c) -> pi p(0) in e(+) e(-) collisions using a data sample corresponding to an integrated luminosity of 915 fb(-1). The data were collected by the Belle experiment at the KEKB e(+) e(-) asymmetric-energy collider running at or near the (4S) and (5S) resonances. No significant signal is observed, and we set an upper limit on the branching fraction of B(Lambda(+)(c) -> phi p(0)) K+ K- p pi(0) decays is found to be consistent with zero, and the corresponding upper limit on its branching fraction is set to be B(Lambda(+)(c) ->. K+ K- p pi(0))(NR) phi p. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of B(Lambda(+)(c) -> P-s(+) pi(0)) x B(P-s(+) -> phi p) K- pi(+) p pi(0);the result is B(Lambda(+)(c) -> K- pi(+) p pi(0)) = (4.42 +/- 0.05(stat)+/- 0.12(syst)+/- 0.16(norm))%, which is the most precise measurement to date.
Published: 2017
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48. Invariant-mass and fractional-energy dependence of inclusive production of dihadrons in e+e− annihilation at s=10.58 GeV

Author: Z. Drásal, G. Schnell, T. Iijima, P. Pakhlov, Eberhard Widmann, H. Park, G. Pakhlova, S. Nishida, Y. Yamashita, A. Bozek, L. Li Gioi, D. Joffe, T. Aushev, H. Ye, H. Farhat, A. Garmash, T. Ferber, K. Tanida, Liangbin Li, N. Dash, A. Zupanc, Y. Choi, V. Chekelian, K. J. Nath, W. S. Hou, K. T. Kim, D. Kotchetkov, B. Pal, L. Santelj, Eleonora Guido, R. Gillard, M. Uchida, K. Sumisawa, Y. Sakai, A. Chen, B. Bhuyan, S. K. Choi, V. Vorobyev, V. Bhardwaj, M. Masuda, J. G. Shiu, A. M. Bakich, T. E. Browder, Jyoti Prakash Biswal, C. P. Shen, Z. Natkaniec, D. Matvienko, M. J. Kim, M. Starič, A. Bobrov, G. S. Varner, Soumen Paul, T. Luo, V. Savinov, R. Kulasiri, T. A. Shibata, H. Miyata, A. Rostomyan, P. Wang, A. Vossen, Prafulla Kumar Behera, D. Cinabro, E. Won, N. Gabyshev, D. Červenkov, R. Pestotnik, S.I. Eidelman, T. K. Pedlar, Frank Simon, B. G. Fulsom, V.E. Shebalin, H. Hayashii, K. K. Joo, M. Watanabe, J. F. Strube, M. Lubej, V. Zhukova, M. Niiyama, B. G. Cheon, F. Tenchini, Peter Kodys, D. M. Asner, T. Matsuda, S. Uno, T. Sumiyoshi, V. Gaur, T. Kumita, R. Itoh, W. W. Jacobs, S. Jia, M. Takizawa, V.N. Zhilich, Y. Watanabe, S. Korpar, K. Chilikin, C. Pulvermacher, Z. Doležal, S. H. Kim, P. Krokovny, C. H. Wang, E. Solovieva, S. Al Said, H. K. Moon, K. H. Kang, K. Cho, J. S. Lange, M. Merola, I. Jaegle, K. Miyabayashi, K. Inami, Y. Iwasaki, Yongsun Kim, C. Schwanda, T. Mori, H. Aihara, Martin Ritter, S. Di Carlo, Y. J. Kwon, I. Badhrees, G. Karyan, N. K. Nisar, M. Bračko, O. Schneider, Z. P. Zhang, K. Kinoshita, U. Tamponi, K. Senyo, Vikas Bansal, L. E. Piilonen, E. Nakano, J. Haba, S. Pardi, C. Van Hulse, B.A. Shwartz, D. Liventsev, Vladimir Zhulanov, Y. Jin, J. Libby, K. Hayasaka, T. Julius, M. E. Sevior, P. Goldenzweig, Y. Seino, Shoichi Watanuki, R. Seidl, I. Adachi, J. B. Kim, H. Ono, R. Mizuk, Y. Unno, R. Ayad, D. Y. Kim, R. Mussa, H. B. Jeon, A. Ishikawa, M. Nakao, A. Kuzmin, P. Križan, S. Ogawa, Andrey Sokolov, James E. Fast, Tara Nanut, and T. Uglov
Subjects: Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Parton, 01 natural sciences, Nuclear physics, Pion, KEKB, 0103 physical sciences, High Energy Physics::Experiment, Invariant mass, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: The inclusive cross sections for dihadrons of charged pions and kaons (e(+)e(-) -> hhX) in electron-positron annihilation are reported. They are obtained as a function of the total fractional energy and invariant mass for any di-hadron combination in the same hemisphere as defined by the thrust event-shape variable and its axis. Since same-hemisphere dihadrons can be assumed to originate predominantly from the same initial parton, di-hadron fragmentation functions are probed. These di-hadron fragmentation functions are needed as an unpolarized baseline in order to quantitatively understand related spindependent measurements in other processes and to apply them to the extraction of quark transversity distribution functions in the nucleon. The di- hadron cross sections are obtained from a 655 fb(-1) data sample collected at or near the Y (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
Published: 2017
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49. Measurement of the branching fraction and CP asymmetry in B0→π0π0 decays, and an improved constraint on ϕ2

Author: H. Farhat, Vikas Bansal, E. Nakano, G. B. Mohanty, D. Liventsev, C. Van Hulse, A. Zupanc, Vladimir Zhulanov, Y. Jin, M. E. Sevior, I. S. Lee, Y. Yusa, M. Barrett, B. Bhuyan, B. Pal, Massimo Berger, Dipanwita Dutta, Yuki Sato, C. Z. Yuan, M. Nayak, P. Goldenzweig, D. Joffe, T. E. Browder, F. Tenchini, K. Tanida, A. Bobrov, B. G. Cheon, T. Sumiyoshi, M. Z. Wang, K. Kinoshita, U. Tamponi, A. Kuzmin, M. Merola, C. Pulvermacher, Martin Ritter, S. Sandilya, Yang Li, S. Nishida, A.E. Bondar, Y. Choi, K. J. Nath, S. Pardi, I. Adachi, V. Savinov, G. Schnell, T. Iijima, M. J. Kim, L. Santelj, S. Ogawa, M. Starič, K. Senyo, D. Dossett, T. Matsuda, S. Uno, T. Sanuki, K. M. Williams, Y. Sakai, A. Chen, C. H. Wang, R. Itoh, J. B. Kim, T. Kuhr, G. Bonvicini, L. E. Piilonen, Peter Kodys, W. W. Jacobs, E. Waheed, Z. Doležal, P. Katrenko, Y. Yamashita, Youngjoon Kwon, K. Chilikin, A. J. Schwartz, R. Mussa, K. T. Kim, R. Gillard, E. Won, T. Kawasaki, S. H. Kim, P. Krokovny, H. Ye, K. Inami, S. Korpar, P. Pakhlov, A. Ishikawa, K. Cho, L. Pesántez, M. Nakao, Y. Iwasaki, K. Trabelsi, J. Kahn, S. Di Carlo, P. Križan, J. Haba, S. Uehara, R. Ayad, H. Hayashii, H. Sahoo, V.N. Zhilich, M. Uchida, T. Julius, K. K. Joo, O. Schneider, Tara Nanut, J. F. Krohn, J. G. Shiu, T. Uglov, T. Bloomfield, Andrey Sokolov, V. Bhardwaj, G. Karyan, D. Y. Kim, V. Babu, Phillip Urquijo, V.E. Shebalin, M. Watanabe, I. Jaegle, K. Miyabayashi, T. Aushev, I. Badhrees, R. Kulasiri, H. Park, A. Bozek, T. Ferber, R. Pestotnik, G. S. Varner, H. Ono, R. Mizuk, Z. Drásal, T. Luo, T. A. Shibata, H. Miyata, V. Gaur, S.I. Eidelman, James E. Fast, P. Wang, W. S. Hou, B. G. Fulsom, Liangbin Li, D. M. Asner, D. Cinabro, Y. Unno, V. Chekelian, M. Masuda, H. K. Moon, J. S. Lange, S. Al Said, Y. Watanabe, J. Libby, Y. Chao, K. Hayasaka, C. H. Li, Yongsun Kim, C. L. Hsu, C. Schwanda, Y. Seino, V.M. Aulchenko, E. L. Barberio, A. Garmash, C. S. Park, G. Pakhlova, L. Li Gioi, N. Dash, D. Kotchetkov, M. C. Chang, M. Salehi, A. Vossen, Kevin Varvell, T. Hara, E. Solovieva, T. Mori, H. Aihara, Y. Usov, N. K. Nisar, Z. P. Zhang, Jyoti Prakash Biswal, J. MacNaughton, H. J. Kim, C. Kiesling, M. Bračko, Eberhard Widmann, A. M. Bakich, Z. Natkaniec, N. Gabyshev, D. Červenkov, and B.A. Shwartz
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, media_common.quotation_subject, Resonance, 01 natural sciences, Asymmetry, KEKB, 0103 physical sciences, Pi, CP violation, 010306 general physics, media_common, Bar (unit)
Abstract: We measure the branching fraction and CP violation asymmetry in the decay B-0 -> pi(0)pi(0), using a data sample of 752 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. The obtained branching fraction and direct CP asymmetry are B(B -> pi(0)pi(0)) = [1.31 +/- 0.19(stat) +/- 0.19(syst)] x 10(-6) and A(CP) = +0.14 +/- 0.36(stat) +/- 0.10(syst), respectively. The signal significance, including the systematic uncertainty, is 6.4 standard deviations. We combine these results with Belle's earlier measurements of B-0 -> pi(+)pi(-) and B-+/- -> pi(+/-)pi(0) to exclude the CP-violating parameter phi(2) from the range 15.5 degrees < phi(2) < 75.0 degrees at 95% confidence level.
Published: 2017
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50. Measurement of branching fraction and direct CP asymmetry in charmless B+→K+K−π+ decays at Belle

Author: Kevin Varvell, S. Eidelman, T. Mori, H. Aihara, K. T. Kim, D. Y. Kim, D. Matvienko, Eberhard Widmann, L. Pesántez, Melissa K. Takahashi, O. Schneider, J. Libby, V. Bhardwaj, T. K. Pedlar, Y. Usov, Tao Luo, Jyoti Prakash Biswal, Y. Seino, R. Ayad, Yukinori Sato, I. Adachi, J. G. Shiu, H. Farhat, M. Masuda, G. B. Mohanty, J. B. Kim, H. Ono, T. Aushev, Y. Watanabe, B. Shwartz, V. Gaur, F. Tenchini, V.E. Shebalin, Phillip Urquijo, S. Okuno, Y. Unno, T. Matsuda, P. Goldenzweig, M. Nakao, Chawon Park, V. V. Zhulanov, H. Park, A. Bozek, D. Joffe, S. Sandilya, A.E. Bondar, K. Chilikin, M. J. Kim, G. Bonvicini, Martin Ritter, T. Sanuki, G. Schnell, M. Takizawa, C. B. Van Hulse, M. Starič, Y. Onuki, R. Mussa, H. B. Jeon, K. M. Williams, A. Ishikawa, D. Cinabro, Y.-T. Lai, Y-J Kwon, B. G. Cheon, M. T. Hedges, M. Lubej, G. Inguglia, B. Bhuyan, T. Bloomfield, Frank Simon, C. Kiesling, B. G. Fulsom, T. E. Browder, P. Krokovny, P. Chang, M. Nayak, M. E. Sevior, C.-L. Hsu, K. H. Kang, K. Cho, Z. Natkaniec, Y. Sakai, H. Hayashii, Hyunyong Kim, Ya-Qiu Jin, K. K. Joo, T. Kuhr, V. M. Aulchenko, M. Bračko, Z. P. Zhang, Peter Kodys, W. W. Jacobs, B. Golob, S. Al Said, P. Katrenko, V. Savinov, H. Miyata, K. Hayasaka, A. Zupanc, E. L. Barberio, S. Ogawa, T.-A. Shibata, Zdenek Dolezal, V.N. Zhilich, S. Korpar, N. K. Nisar, N. Dash, O. Grzymkowska, C. H. Wang, J. Haba, Z. Drásal, A. M. Bakich, A. Garmash, L. E. Piilonen, G. Pakhlova, R. Kulasiri, I. Jaegle, S. Paul, K. Miyabayashi, I. Badhrees, J. S. Lange, K. Senyo, S. Di Carlo, S. Nishida, E. Solovieva, Massimo Berger, L. Li Gioi, Y. Yamashita, N. Gabyshev, E. Waheed, T. Julius, E. Nakano, T. Kawasaki, K. Inami, Seok Kim, R. Mizuk, A. B. Kaliyar, R. Chistov, M. Z. Wang, D. Kotchetkov, P. K. Behera, H. Ye, F. Strube, Y. Choi, K. J. Nath, X. L. Wang, T. Hara, V. Chekelian, S. Uno, C. Schwanda, M. Uchida, L. K. Li, C. W. Park, E. Won, B. K. Pal, Eleonora Guido, C. H. Li, Victoria Zhukova, D. Liventsev, A. Chen, K. Sumisawa, D. M. Asner, J. E. Fast, D. Dossett, H. Atmacan, G. S. Varner, M. Watanabe, P. Krizan, Tara Nanut, T. Uglov, A. Rostomyan, W. S. Hou, Alexei Kuzmin, and V. Vorobyev
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, media_common.quotation_subject, Electron–positron annihilation, Resonance, 01 natural sciences, Asymmetry, Nuclear physics, KEKB, 0103 physical sciences, CP violation, Invariant mass, B meson, 010306 general physics, media_common
Abstract: We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K-pi(+). The results are based on a data sample that contains 772 x 10(6) B (B) over bar pairs collected at the Y (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38 +/- 0.40 +/- 0.35) x 10(-6) and -0.170 +/- 0.073 +/- 0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K- invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c(2), which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K- invariant-mass region.
Published: 2017
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