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1. Measurement of the branching fraction of Λc+→pω decay at Belle

Author

T. Matsuda, A. Vinokurova, P. Pakhlov, D. Y. Kim, P. Krokovny, K. H. Kang, K. Cho, H. Park, A. Bozek, C.-L. Hsu, K. T. Kim, D. Epifanov, P. Goldenzweig, C. Sharma, J. Libby, Peter Kodys, W. W. Jacobs, M. Uchida, S. X. Li, K. K. Joo, L. K. Li, R. Mizuk, S. Sandilya, R. Dhamija, D. Liventsev, S. K. Choi, K. Tanida, Y. Yusa, E. Kovalenko, P. K. Behera, Y. Seino, S.-J. Cho, V.N. Zhilich, Y. Kato, V. Bhardwaj, T. K. Pedlar, G. De Pietro, P. Branchini, G. S. Varner, K.-H. Kim, Y.-T. Lai, Z. P. Zhang, Andrey Sokolov, M. T. Prim, M. Niiyama, J. H. Yin, M. Starič, C. Hadjivasiliou, M. Merola, C. P. Shen, K. Miyabayashi, T. Gu, M. Nayak, A. K. Giri, R. Itoh, H. Kichimi, F. Tenchini, Victoria Zhukova, A. Chen, S. Nishida, T. V. Dong, Y. Choi, M. Masuda, L. Nayak, T. Aushev, L. Santelj, A. Rostomyan, P. Wang, T. Podobnik, M. Takizawa, T. Sumiyoshi, H. Hayashii, Ya-Qiu Jin, J. G. Shiu, S. Al Said, S. E. Vahsen, T. Ferber, O. Hartbrich, T. Uglov, K. Gudkova, C. H. Kim, B. Golob, G. Schnell, Phillip Urquijo, T. Sanuki, T. Iijima, John Yelton, Z. Doležal, S. Das, M. Z. Wang, K. Kinoshita, N. K. Nisar, J. Li, A. Korobov, K. Kumara, N. Gabyshev, D. Červenkov, J. V. Bennett, H. Aihara, J. S. Lange, K. Uno, Y. Usov, S. Cunliffe, Jyoti Prakash Biswal, T. Pang, Y. B. Li, Yongsun Kim, T. Konno, Y. Guan, Y. Iwasaki, M. C. Chang, S. Uno, Y. J. Kwon, C. Schwanda, Seongbae Yang, G.V. Russo, K. Senyo, Z. S. Stottler, M. Shapkin, Antonio Budano, V. Gaur, Shih-Chang Lee, W. S. Hou, L. E. Piilonen, M. Nakao, B. G. Cheon, M. Röhrken, K. Chilikin, J. F. Strube, G. Pakhlova, P. Oskin, R. Mussa, S. Ogawa, N. Rout, R. Van Tonder, C. MacQueen, A. Ishikawa, Frank Simon, D. Bodrov, E. Wang, Vladimir Popov, Rahul Kumar, E. Waheed, R. B. Garg, B. Bhuyan, K. Hayasaka, A. Bobrov, K. Belous, S. Korpar, R. Kroeger, M. E. Sevior, Sudhanwa Patra, B. G. Fulsom, E. Graziani, T. E. Browder, P. Križan, Seokhee Park, H. E. Cho, R. Pestotnik, M. Campajola, A. B. Kaliyar, K. Lieret, M. Sumihama, M. Laurenza, Motoki Iwasaki, E. Won, Doyen Sahoo, W. Sutcliffe, V. Savinov, J. Borah, E. Solovieva, G. De Nardo, A. Natochii, K. Inami, M. Bračko, E. Prencipe, Bruce Yabsley, D. Cinabro, P. Chang, Somnath Choudhury, I. Adachi, F. Di Capua, W. B. Yan, H. Ono, Y. Unno, L. Li Gioi, H. Ye, S. Halder, Martin Florian Bessner, T. Bilka, U. Tamponi, S. Jia, C. H. Wang, S. Paul, and D. M. Asner

Subjects
Nuclear physics, Physics, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, 010306 general physics, 01 natural sciences
Published
2021
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2. Measurement of the masses and widths of the Σc(2455)+ and Σc(2520)+ baryons

Author

S-H Park, B. G. Cheon, Seema Bahinipati, T. V. Dong, M. Takizawa, Y. Choi, S. Das, T. Hara, J. V. Bennett, Y. Tao, S. Al Said, L. Santelj, H. Aihara, S. E. Vahsen, M. Uchida, L. K. Li, D. Liventsev, G. S. Varner, Y. Usov, R. Itoh, A. Rostomyan, P. Wang, Zhukova, K. Gudkova, K. Belous, L. Nayak, John Yelton, S. Korpar, D. Matvienko, Gaur, O. Hartbrich, Y. Iwasaki, U. Tamponi, N. Dash, T. Aushev, K. Senyo, S. Pardi, R. B. Garg, A. Chen, B. Bhuyan, G. De Nardo, A. Korobov, M. Sumihama, M. Niiyama, N. Rout, Motoki Iwasaki, T. Ferber, Chekelian, B. G. Fulsom, J-G Shiu, G. Schnell, S. Jia, S. Uno, C. Schwanda, T. E. Browder, Z. P. Zhang, R. Mizuk, S. Cunliffe, M. Shapkin, Andrey Sokolov, G. De Pietro, M. Laurenza, K. Chilikin, P. Goldenzweig, T. Matsuda, A. Sangal, T. Kuhr, S. Sandilya, Shih-Chang Lee, I. Adachi, M. C. Chang, Jyoti Prakash Biswal, Babu, M. Merola, Antonio Budano, Phillip Urquijo, T. Gu, Y-J Kwon, R. Kroeger, M. E. Sevior, P. Krizan, K. Kumara, M. Nakao, R. Pestotnik, M. Nayak, Ya-Qiu Jin, M. Starič, Y. B. Li, R. Dhamija, Seongbae Yang, D Wang, C.-L. Hsu, A. Vinokurova, C. Hadjivasiliou, C. H. Wang, Z. S. Stottler, L. E. Piilonen, Bruce Yabsley, K. Tanida, T. Uglov, P. Pakhlov, E. Wang, Y. Onuki, G. Pakhlova, P. Oskin, R. Kulasiri, W-S Hou, S. Paul, L. Li Gioi, C. Z. Yuan, E. Prencipe, P. Krokovny, C. Sharma, Peter Kodys, S-J Cho, J. Li, W. W. Jacobs, K. Trabelsi, H. Ye, Y. Sakai, K. H. Kang, K. Cho, S. K. Choi, T. J. Moon, K. T. Kim, D. Cinabro, C. P. Shen, Zdenek Dolezal, Seok Kim, H. Park, T. Konno, A. Bozek, K. Lieret, Martin Florian Bessner, R. Ayad, N. Gabyshev, D. Červenkov, D. Epifanov, A. Garmash, P. Branchini, D. Y. Kim, K. Sumisawa, S. Nishida, D. M. Asner, T. K. Pedlar, Zhilich, P. K. Behera, F. Tenchini, A. K. Giri, E. Solovieva, P. Chang, T. Podobnik, T. Sumiyoshi, Yk Kim, K. Hayasaka, R. Mussa, T. Sanuki, M. Masuda, R. Van Tonder, G. B. Mohanty, A. Ishikawa, H. E. Cho, Doyen Sahoo, S. Ogawa, Somnath Choudhury, W. B. Yan, E. Waheed, Z. Natkaniec, J. Libby, E. Kovalenko, Y. Seino, M. T. Prim, Shoichi Watanuki, T. Bilka, M. Watanabe, J. C. Dingfelder, F. Di Capua, K. K. Joo, A. B. Kaliyar, J. Schueler, E. Won, C. MacQueen, J. K. Ahn, H. Atmacan, G.V. Russo, E. Graziani, J. H. Yin, M. Campajola, Y. Kato, D. Ferlewicz, N. K. Nisar, Bhardwaj, J. S. Lange, K. Miyabayashi, C. Kiesling, M. Bračko, H. Ono, Y. Unno, H. Hayashii, C. H. Kim, M. Z. Wang, K. Kinoshita, Aulchenko, A. Natochii, K. Inami, Savinov, and J. T. McNeil

Subjects
Physics, Quark, Particle physics, 010308 nuclear & particles physics, Sigma, Lambda, 01 natural sciences, law.invention, Baryon, Charmed baryons, KEKB, law, 0103 physical sciences, 010306 general physics, Collider
Abstract

Using 980 ${\rm fb}^{-1}$ of data {collected} with the Belle detector operating at the KEKB asymmetric-energy $e^+e^-$ collider, we report the measurements of the masses, and the first measurements of the instrinsic widths, of the $\Sigma_c(2455)^+$ and $\Sigma_c(2520)^+$ charmed baryons. We find $M(\Sigma_c(2455)^+)-M(\Lambda_c^+) = 166.17\pm 0.05^{+0.16}_{-0.07}\ {\rm MeV}/c^2$, $\Gamma(\Sigma_c(2455)^+) = 2.3 \pm 0.3 \pm 0.3\ {\rm MeV/c^2}$, $M(\Sigma_c(2520)^+)-M(\Lambda_c^+) = 230.9 \pm 0.5 ^{+0.5}_{-0.1}\ {\rm MeV}/c^2$, and $\Gamma(\Sigma_c(2520)^+) = 17.2^{+2.3\ +3.1}_{-2.1\ -0.7}\ {\rm MeV}/c^2$, where the uncertainties are statistical and systematic, respectively. These measurements can be used to test models of the underlying quark structure of the $\Sigma_c$ states.

Published
2021
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3. 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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4. 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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5. Measurements of the branching fractions ofΛc+→pηandΛc+→pπ0decays at Belle

Author

Jyoti Prakash Biswal, S. Eidelman, P. Pakhlov, P. Goldenzweig, S. Cunliffe, S. Sandilya, M. Sumihama, Martin Florian Bessner, Motoki Iwasaki, M. C. Chang, M. Nakao, H. Park, A. Bozek, D. Epifanov, Soumya D. Mohanty, S-H Park, A. Ishikawa, B. H. Kim, Doyen Sahoo, E. Wang, T. Pang, M. Takizawa, D. Y. Kim, C. Z. Yuan, R. Mizuk, D. M. Asner, F. Di Capua, T. K. Pedlar, Y. Sakai, A. Chen, I. Adachi, K. Hayasaka, A. Bobrov, H. E. Cho, R. B. Garg, B. Bhuyan, B. G. Fulsom, J-G Shiu, G.V. Russo, K. Lieret, T. E. Browder, Y-J Kwon, Florian Urs Bernlochner, Z. P. Zhang, J. K. Ahn, A. Korobov, L. Nayak, W-S Hou, E. Prencipe, Zhulanov, R. Dhamija, L. E. Piilonen, G. Pakhlova, Shebalin, Alexei Kuzmin, T. Aushev, John Yelton, C.-L. Hsu, R. Kroeger, M. E. Sevior, I. S. Lee, R. Ayad, P. Krizan, M. Uchida, L. K. Li, Phillip Urquijo, Y. Yusa, C. Sharma, Peter Kodys, W. W. Jacobs, M. Campajola, S. Uehara, Shih-Chang Lee, T. Ferber, G. Schnell, T. Iijima, T. Uglov, C. W. Joo, K. Tanida, Y. Kato, D. Ferlewicz, Zhilich, D. Liventsev, E. Solovieva, S. Nishida, Zdenek Dolezal, G. De Nardo, M. Niiyama, Y. Iwasaki, H. Ono, T. Matsuda, Y. B. Li, A. B. Kaliyar, M. T. Hedges, S. Das, G. Karyan, T. Konno, K. Lalwani, T. Kuhr, G. S. Varner, B. Shwartz, Seongbae Yang, J. V. Bennett, Y. Tao, S. Uno, C. Schwanda, H. Kichimi, T. Mori, H. Aihara, A. Vossen, J. Schueler, R. Van Tonder, N. Rout, A. K. Giri, Yk Kim, F. Tenchini, T. Podobnik, T. Sumiyoshi, M. Shapkin, K. Kumara, A. Natochii, M. Masuda, K. Inami, Savinov, E. Won, R. Itoh, B. G. Cheon, E.-J. Jang, M. Röhrken, K. Chilikin, W. Sutcliffe, Y. Onuki, Z. S. Stottler, A. Garmash, A. Rostomyan, P. Wang, Zhukova, Seema Bahinipati, T. V. Dong, T. Sanuki, T. Bilka, SX Li, P. Krokovny, L. Cao, Y. Choi, M. Z. Wang, K. Kinoshita, K. Gudkova, X. P. Xu, K. H. Kang, K. Cho, Popov, L. Santelj, Sudhanwa Patra, K. Trabelsi, C. H. Li, Ya-Qiu Jin, S. Korpar, R. Pestotnik, C. P. Shen, Seok Kim, N. Dash, A. Sangal, P. K. Behera, D. Matvienko, Mukesh Kumar, H. Hayashii, Gaur, O. Hartbrich, Babu, M. Merola, K. Senyo, J. H. Yin, C. H. Kim, T. Kawasaki, S. Jia, K. T. Kim, W. B. Yan, C. Hadjivasiliou, Z. Natkaniec, B. Golob, O. Grzymkowska, C. H. Wang, S. Paul, L. Li Gioi, Felix Metzner, N. K. Nisar, H. Ye, Bhardwaj, J. S. Lange, K. Uno, K. K. Joo, S. Pardi, Bruce Yabsley, D. Cinabro, G. Inguglia, Somnath Choudhury, J. Libby, E. Kovalenko, Y. Seino, M. T. Prim, and Shoichi Watanuki

Subjects
Quark, Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Branching fraction, Branching (polymer chemistry), 01 natural sciences, law.invention, KEKB, law, 0103 physical sciences, Invariant mass, 010306 general physics, Collider
Abstract

We report measurements of the branching fractions of singly Cabibbo-suppressed decays Λc+→pη and Λc+→pπ0 using the full Belle data sample corresponding to an integrated luminosity of 980.6 fb-1. The data were collected by the Belle detector at the KEKB e+e- asymmetric energy collider. A clear Λc+ signal is seen in the invariant mass distribution of pη. The fitted number of signal events of the Λc+→pη process is 7734±263; from this, we measure the ratio of branching fractions B(Λc+→pη)/B(Λc+→pK-π+)=[2.258±0.077(stat)±0.122(syst)]×10-2, from which we infer the branching fraction B(Λc+→pη)=[1.42±0.05(stat)±0.11(syst)]×10-3. In addition, no significant signal for Λc+→pπ0 is found, so an upper limit on the branching fraction of B(Λc+→pπ0)

Published
2021
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6. 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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7. 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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8. Measurement of R(D) and R(D*) with a Semileptonic Tagging Method

Author

A. K. Giri, M. Masuda, S. E. Vahsen, T. V. Dong, K. Chilikin, Tagir Aushev, P. K. Resmi, C.-L. Hsu, C. Beleño, V. Zhukova, K. Trabelsi, Peter Kodys, W. W. Jacobs, S. Di Carlo, G. Karyan, Y. Onuki, A. M. Bakich, N. Dash, Y. Iwasaki, Y. J. Kwon, M. Iwasaki, T. J. Moon, K. Nakamura, Soumen Paul, H. Ono, B. G. Cheon, R. Mussa, Felix Metzner, O. Schneider, H. B. Jeon, F. Di Capua, G. Schnell, M. Rozanska, N. Gabyshev, D. Červenkov, B. G. Fulsom, Jyoti Prakash Biswal, A. Ishikawa, J. Schueler, A. Rabusov, M. Z. Wang, K. Kinoshita, P. Pakhlov, B. Bhuyan, K. K. Joo, Y. Seino, M. Nakao, Toru Iijima, J. Bennett, S. Sandilya, Seokhee Park, J. F. Krohn, E. Won, R. Pestotnik, S. Nishida, Iki Adachi, J. K. Lee, S. Korpar, Y. Choi, K. J. Nath, T. Kuhr, S. C. Lee, D. Kotchetkov, T. Matsuda, Doo Young Kim, G. De Nardo, M. Bračko, V. Babu, T. Sumiyoshi, T. K. Pedlar, Y. Sakai, Rocky Bala Garg, M. Nayak, Martin Ritter, M. Uchida, P. L. Wang, H. Atmacan, Y. Guan, R. Cheaib, L. K. Li, Leo Piilonen, A. Vossen, T. Ferber, V. Savinov, B.A. Shwartz, W. Sutcliffe, H. J. Kim, K. Cho, A. Chen, Phillip Urquijo, Seema Bahinipati, T. Sanuki, A. Garmash, H. Aihara, Hitoshi Yamamoto, Z. S. Stottler, K. Nishimura, Z. Doležal, Y. B. Li, T. Pang, G. B. Mohanty, M. Starič, Frank Simon, D. Liventsev, C. H. Kim, Vladimir Popov, Vladimir Zhulanov, P. Križan, R. Itoh, R. Kroeger, M. E. Sevior, I. S. Lee, V. Shebalin, S. Patra, G.V. Russo, Kevin Varvell, F. Tenchini, D. Joffe, M. Takizawa, P. Goldenzweig, E. Waheed, C. Z. Yuan, Tao Luo, K. Tanida, M. T. Prim, J. G. Shiu, K. T. Kim, W. S. Hou, K. Lieret, P. Oskin, O. Hartbrich, M. Merola, Pavel Krokovny, T. Uglov, D. Matvienko, J. Wiechczynski, T. Mori, D. Greenwald, S. H. Kim, Y. Usov, H. Hayashii, G. Pakhlova, N. K. Nisar, Rakesh Kumar, H. Park, A. Bozek, Dipak Kumar Sahoo, Luka Santelj, K. Senyo, K. H. Kang, J. H. Yin, L. Li Gioi, Z. P. Zhang, Kohei Ogawa, X. L. Wang, E. Solovieva, V. Chekelian, R. Van Tonder, A. B. Kaliyar, K. Inami, D. Epifanov, J. S. Lange, S. Cunliffe, B. Pal, Seongbae Yang, C. MacQueen, H. Ye, A. J. Schwartz, H. Kichimi, Takeo Higuchi, M. Campajola, V.N. Zhilich, D. Ferlewicz, V. Gaur, K. Miyabayashi, I. Badhrees, E. Prencipe, G. Caria, G. Varner, U. Tamponi, S. Al Said, S. Jia, Y. Jin, O. Grzymkowska, C. H. Wang, T. Bilka, T. E. Browder, S. Uno, C. Schwanda, D. Cinabro, J. Libby, D. M. Asner, K. Hayasaka, Takeo Kawasaki, Shoichi Watanuki, Prafulla Kumar Behera, Bo Wang, H. E. Cho, Andrey Sokolov, G. Inguglia, P. Chang, James E. Fast, Somnath Choudhury, and Semen Eidelman

Subjects
Physics, Semileptonic decay, Particle physics, Muon, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, General Physics and Astronomy, 01 natural sciences, Standard Model, KEKB, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Bar (unit), Lepton
Abstract

The experimental results on the ratios of branching fractions $\mathcal{R}(D) = {\cal B}(\bar{B} \to D \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B} \to D \ell^- \bar{\nu}_{\ell})$ and $\mathcal{R}(D^*) = {\cal B}(\bar{B} \to D^* \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B} \to D^* \ell^- \bar{\nu}_{\ell})$, where $\ell$ denotes an electron or a muon, show a long-standing discrepancy with the Standard Model predictions, and might hint to a violation of lepton flavor universality. We report a new simultaneous measurement of $\mathcal{R}(D)$ and $\mathcal{R}(D^*)$, based on a data sample containing $772 \times 10^6$ $B\bar{B}$ events recorded at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+ e^-$ collider. In this analysis the tag-side $B$ meson is reconstructed in a semileptonic decay mode and the signal-side $\tau$ is reconstructed in a purely leptonic decay. The measured values are $\mathcal{R}(D)= 0.307 \pm 0.037 \pm 0.016$ and $\mathcal{R}(D^*) = 0.283 \pm 0.018 \pm 0.014$, where the first uncertainties are statistical and the second are systematic. These results are in agreement with the Standard Model predictions within $0.2$, $1.1$ and $0.8$ standard deviations for $\mathcal{R}(D)$, $\mathcal{R}(D^*)$ and their combination, respectively. This work constitutes the most precise measurements of $\mathcal{R}(D)$ and $\mathcal{R}(D^*)$ performed to date as well as the first result for $\mathcal{R}(D)$ based on a semileptonic tagging method.

Published
2020
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9. Search for B+→μ+νμ and B+→μ+N with inclusive tagging

Author

G. Schnell, T. Iijima, A. K. Giri, S. Eidelman, T. Kuhr, M. Masuda, P. Pakhlov, G. B. Mohanty, J. G. Shiu, H. Ono, Philip Lewis, L. Cao, H. Park, A. Bozek, Peter Kodys, G. De Nardo, G. Karyan, R. Mizuk, R. B. Garg, B. Bhuyan, B. G. Fulsom, T. E. Browder, Bo Wang, Rahul Kumar, C. Beleño, A. Garmash, D. Matvienko, K. Hayasaka, A. Bobrov, B. G. Cheon, V.E. Shebalin, H. E. Cho, Y. Choi, K. J. Nath, T. Hara, L. Santelj, V. Bansal, D. M. Asner, Florian Urs Bernlochner, C. Kiesling, V. Savinov, Jyoti Prakash Biswal, Andrey Sokolov, S. Al Said, J. Haba, M. Niiyama, F. Tenchini, P. Goldenzweig, Seokhee Park, A. B. Kaliyar, Shih-Chang Lee, S. Korpar, M. Bračko, P. K. Behera, S. Nishida, K. Senyo, J. K. Lee, V. Gaur, M. Heck, K. Nishimura, J. Schueler, E. Won, M. Nakao, Y. Unno, V. Babu, T. Aushev, M. Starič, Victoria Zhukova, V. V. Zhulanov, T. Kawasaki, J. MacNaughton, T. Sumiyoshi, L. Li Gioi, Martin Ritter, Jihwa Lee, E. Prencipe, M. Campajola, K. Lalwani, J. F. Strube, M. Uchida, T. Kumita, T. Matsuda, A. Chen, S. Uno, C. Schwanda, H. Atmacan, T. Ferber, S. Ogawa, V. Chekelian, R. Ayad, Felix Metzner, D. Liventsev, M. Merola, H. Hayashii, Z. P. Zhang, S. E. Vahsen, R. Van Tonder, B. K. Pal, Z. Natkaniec, G. S. Varner, L. E. Piilonen, C. H. Kim, B. Shwartz, K. K. Joo, K. Adamczyk, G. Pakhlova, R. Kulasiri, A. Rostomyan, P. Wang, D. Y. Kim, G.V. Russo, H. Ye, Y. Iwasaki, Y. J. Kwon, M. Z. Wang, M. Nayak, K. Kinoshita, Nils Braun, T. Uglov, K. Chilikin, V.N. Zhilich, Kevin Varvell, Sudhanwa Patra, Y. Yusa, Ya-Qiu Jin, A. Vinokurova, O. Schneider, Y. Tao, H. Aihara, Y. Usov, K. Miyabayashi, R. Mussa, P. C. Lu, W. S. Hou, A. Ishikawa, M. Sumihama, Alexei Kuzmin, A. M. Bakich, Motoki Iwasaki, Y. Ushiroda, K. Trabelsi, P. Križan, C. H. Li, I. Adachi, P. Krokovny, Seok Kim, J. E. Fast, M. Rozanska, Doyen Sahoo, D. Kotchetkov, W. Sutcliffe, Y. Onuki, D. Červenkov, K. Cho, S. Cunliffe, Y. Guan, V. M. Aulchenko, R. Pestotnik, D. Epifanov, T. Bilka, J. H. Yin, V. Bhardwaj, T. K. Pedlar, U. Tamponi, S. Jia, O. Grzymkowska, C. H. Wang, K. Inami, S. Paul, N. K. Nisar, Y. Sakai, J. S. Lange, K. Lieret, E. Solovieva, D. Joffe, Seongbae Yang, Frank Simon, Vladimir Popov, D. Cinabro, G. Inguglia, P. Chang, Somnath Choudhury, J. Libby, Y. Seino, M. T. Prim, Shoichi Watanuki, S. Pardi, M. Takizawa, Z. Doležal, K. T. Kim, R. Kroeger, M. E. Sevior, I. S. Lee, Tao Luo, and H. Kichimi

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Rest frame, Type (model theory), Coupling (probability), 01 natural sciences, Helicity, Standard Model, 0103 physical sciences, High Energy Physics::Experiment, B meson, Sensitivity (control systems), 010306 general physics
Abstract

We report the result for a search for the leptonic decay of B$^{+}$ → μ$^{+}$ν$_{μ}$ using the full Belle dataset of 711 fb$^{-1}$ of integrated luminosity at the ϒ(4S) resonance. In the Standard Model leptonic B-meson decays are helicity and Cabibbo-Kobayashi-Maskawa suppressed. To maximize sensitivity an inclusive tagging approach is used to reconstruct the second B meson produced in the collision. The directional information from this second B meson is used to boost the observed μ into the signal B-meson rest frame, in which the μ has a monochromatic momentum spectrum. Though its momentum is smeared by the experimental resolution, this technique improves the analysis sensitivity considerably. Analyzing the μ momentum spectrum in this frame we find B(B$^{+}$ → μ$^{+}$ν$_{μ}$) = 5.3 ± 2.0 ± 0.9) × 10$^{-7}$ with a one-sided significance of 2.8 standard deviations over the background-only hypothesis. This translates to a frequentist upper limit of B(B$^{+}$ → μ$^{+}$ν$_{μ}$) < 8.6 × 10$^{-7}$ at 90% confidence level. The experimental spectrum is then used to search for a massive sterile neutrino, B$^{+}$ → μ$^{+}$N, but no evidence is observed for a sterile neutrino with a mass in a range of 0–1.5 GeV. The determined B$^{+}$ → μ$^{+}$ν$_{μ}$ branching fraction limit is further used to constrain the mass and coupling space of the type II and type III two-Higgs-doublet models.

Published
2020
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10. 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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11. 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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12. 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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13. 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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14. 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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15. 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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16. 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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17. 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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18. 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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19. 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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20. 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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21. 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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22. 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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23. 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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24. 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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25. 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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26. 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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27. 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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28. 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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29. Production cross sections of hyperons and charmed baryons from e+e− annihilation near s=10.52 GeV

Author

D. Matvienko, K. Chilikin, Kiyoshi Tanida, T. Luo, Y. Watanabe, D. M. Asner, K. Hayasaka, Z. Doležal, J. Libby, H. J. Kim, D. Dutta, P. Kodyš, Hitoshi Miyata, R. Mussa, E. Nakano, S. Uno, Y. Yusa, V. Chekelian, Minu Kim, Y. Choi, Jyoti Prakash Biswal, W. W. Jacobs, G. Bonvicini, C. H. Wang, B. G. Cheon, T. Uglov, Y. Unno, A. Sokolov, R. Itoh, S. Sandilya, D. Joffe, C. H. Li, R. Gillard, S. Pardi, K. T. Kim, Meng Wang, L. Santelj, Leo Piilonen, V. Bansal, Semen Eidelman, R. Mizuk, H. K. Moon, C. Van Hulse, K. J. Nath, A. Vossen, M. Sumihama, V. Shebalin, J. Haba, H. Sahoo, E. Barberio, R. Seidl, Li-Xin Li, Frank Simon, T. K. Pedlar, B. Bhuyan, P. Pakhlov, V. Zhilich, Zhengkang Zhang, T. Nanut, S. Uehara, Toru Iijima, V. Babu, S. Di Carlo, G. Karyan, H. Hayashii, S. Nishida, H. Farhat, T. Julius, Iki Adachi, Doo Young Kim, K. Miyabayashi, V. Bhardwaj, Pavel Krokovny, P. Wang, M. Masuda, V. Zhulanov, T. Matsuda, G. Schnell, T. Ferber, M. Uchida, S. H. Kim, Z. Natkaniec, B. Pal, S. Al Said, A. Ishikawa, H. Park, K. Senyo, I. Jaegle, Y. Kato, B. Shwartz, I. Badhrees, V. Savinov, Y. Seino, M. Nakao, A. M. Bakich, K. K. Joo, Tagir Aushev, A. Zupanc, J. S. Lange, K. Cho, C. Pulvermacher, M. C. Chang, D. Liventsev, T. A. Shibata, M. Ritter, N. Gabyshev, B. G. Fulsom, R. Kulasiri, H. Aihara, O. Schneider, N. K. Nisar, Y. J. Kim, A. Bobrov, J. E. Fast, I. S. Lee, K. Kinoshita, A. Bozek, V. Aulchenko, Takao Mori, A. Garmash, Y-J Kwon, M. Starič, R. Ayad, M. Niiyama, N. Dash, C. Z. Yuan, K. M. Williams, E. Solovieva, T. Sumiyoshi, M. Berger, K. Inami, C. Schwanda, M. E. Sevior, Y. Yamashita, E. Widmann, F. Tenchini, S. Ogawa, D. Cinabro, Y. Sato, T. Hara, V. Gaur, A. Kuzmin, Y. Jin, P. Križan, H. Ye, J. B. Kim, Y. Iwasaki, A. Chen, G. Varner, D. Kotchetkov, D. Červenkov, G. Pakhlova, L. Li Gioi, M. Merola, Z. Drásal, P. Katrenko, C. P. Shen, J. G. Shiu, T. Nakano, M. Nayak, T. E. Browder, R. Chistov, P. Goldenzweig, E. Won, H. Ono, M. Bračko, M. Takizawa, Yang Li, and Y. Sakai

Subjects
Physics, Particle physics, Annihilation, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Nuclear Theory, High Energy Physics::Phenomenology, Hyperon, 01 natural sciences, Baryon, Nuclear physics, Diquark, Charmed baryons, KEKB, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

We measure the inclusive production cross sections of hyperons and charmed baryons from e(+)e(-) annihilation using a 800 fb(-1) data sample taken near the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The feed-down contributions from heavy particles are subtracted using our data, and the direct production cross sections are presented for the first time. The production cross sections divided by the number of spin states for S = -1 hyperons follow an exponential function with a single slope parameter except for the Sigma(1385)(+) resonance. Suppression for Sigma(1385)(+) and Xi(1530)(0) hyperons is observed. Among the production cross sections of charmed baryons, a factor of 3 difference for Lambda(+)(c) states over Sigma(c) states is observed. This observation suggests a diquark structure for these baryons.

Published
2018
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30. Search for CP violation in the D+→π+π0 decay at Belle

Author

H. J. Kim, M. Nayak, C. H. Wang, C. Van Hulse, K. T. Kim, A. Rostomyan, D. Joffe, B. K. Pal, Kiyoshi Tanida, Jyoti Prakash Biswal, K. Prasanth, Z. Doležal, T. Uglov, P. K. Resmi, A. Zupanc, M. Gelb, J. S. Lange, D. Dutta, E. Guido, H. B. Jeon, Pavel Krokovny, V. Zhukova, P. Goldenzweig, A. Ishikawa, V. Savinov, J. H. Kang, S. Sandilya, Y. Yamashita, M. Iwasaki, Prafulla Kumar Behera, Y. Choi, M. Nakao, V. Shebalin, A. B. Kaliyar, R. Pestotnik, Junho Kim, T. Julius, K. Cho, M. Masuda, A. Kuzmin, T. Kawasaki, D. Greenwald, H. Ye, V. Bansal, E. Won, Wei-Shu Hou, L. K. Li, R. Kroeger, T. Ferber, D. Liventsev, S. Jia, H. Park, Zhengkang Zhang, D. Matvienko, V. Popov, G. Pakhlova, D. Y. Kim, B. Shwartz, T. Nanut, M. Berger, O. Schneider, W. Ostrowicz, C. Z. Yuan, E. Nakano, M. Niiyama, G. Russo, Iki Adachi, S. E. Vahsen, L. Santelj, P. Pakhlov, Samo Korpar, D. Epifanov, J. Libby, S. Pardi, T. Horiguchi, I. Badhrees, N. K. Nisar, A. Sokolov, A. Garmash, Y. Guan, K. Trabelsi, Eberhard Widmann, J. F. Strube, N. Gabyshev, Phillip Urquijo, M. Ritter, V. Zhilich, Y. Jin, M. Sumihama, S. Nishida, S. Ogawa, M. Salehi, G. Schnell, T. E. Browder, B. G. Fulsom, Y. Sakai, V. Bhardwaj, L. Li Gioi, F. Tenchini, M. T. Hedges, J. Haba, Chawon Park, Sayantan Choudhury, P. Križan, E. Waheed, V. Babu, S. Di Carlo, Z. Natkaniec, A. Chen, V. V. Zhulanov, K. Senyo, Y. Ono, D. M. Asner, M. Lubej, K. Hayasaka, K. Kinoshita, G. Karyan, K. Inami, J. Rauch, P. Wang, D. Kotchetkov, R. Itoh, Takao Mori, W. W. Jacobs, B. G. Cheon, Y. Yusa, H. Ono, O. Seon, R. Mizuk, Y. Seino, S. Uno, R. Ayad, M. Mrvar, Semen Eidelman, M. Takizawa, T. Sumiyoshi, C. Pulvermacher, S. Okuno, D. Červenkov, H. Hayashii, P. Kodyš, Hitoshi Miyata, S. Zakharov, A. Bobrov, H. Aihara, M. Merola, S. H. Kim, C. Kiesling, P. Katrenko, T. Sanuki, Y. Unno, B. Golob, K. Chilikin, Kevin Varvell, T. Luo, V. Gaur, U. Tamponi, M. Bračko, G. B. Mohanty, Y-J Kwon, S. Bahinipati, C. P. Shen, J. G. Shiu, M. Starič, Y. Usov, M. E. Sevior, G. Varner, Y. Watanabe, S. Al Said, T. Kuhr, R. Kumar, R. Kulasiri, K. H. Kang, A. M. Bakich, K. K. Joo, T. A. Shibata, Y. J. Kim, C. Schwanda, D. Cinabro, S. Stanič, Z. Drásal, T. Aziz, K. J. Nath, Ihn Sik Seong, M. Uchida, H. Atmacan, J. E. Fast, Meng Wang, Bingran Wang, A. J. Schwartz, A. Bozek, N. Dash, E. Solovieva, K. Miyabayashi, T. Matsuda, S. Paul, Leo Piilonen, Frank Simon, and H. Yamamoto

Subjects
Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 01 natural sciences, Belle experiment, law.invention, KEKB, law, 0103 physical sciences, CP violation, High Energy Physics::Experiment, Charm (quantum number), 010306 general physics, Collider
Abstract

We search for CP violation in the charged charm meson decay D+ -> pi(+)pi(0), based on a data sample corresponding to an integrated luminosity of 921 fb(-1) collected by the Belle experiment at the KEKB e(+)e(-) asymmetric-energy collider. The measured CP-violating asymmetry is [+2.31 +/- 1.24(stat) +/- 0.23(syst)] %, which is consistent with the standard model prediction and has a significantly improved precision compared to previous results.

Published
2018
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31. Angular analysis of the e+e−→D(*)±D*∓ process near the open charm threshold using initial-state radiation

Author

S. Al Said, S. Nishida, T. A. Shibata, Y. Watanabe, Meng Wang, Samo Korpar, C. Schwanda, D. Cinabro, Hitoshi Miyata, I. Badhrees, R. Gillard, G. Inguglia, A. Sokolov, A. Bobrov, K. Trabelsi, C. Pulvermacher, M. Nayak, V. Zhilich, P. Wang, B. G. Fulsom, K. Senyo, S. L. Olsen, V. Gaur, M. Merola, C. H. Wang, R. Kulasiri, M. Uchida, K. Cho, Tagir Aushev, V. Vorobyev, T. Sanuki, N. K. Nisar, K. Miyabayashi, V. Zhulanov, S. H. Kim, M. Bračko, K. T. Kim, G. B. Mohanty, C. S. Park, A. Rostomyan, K. Chilikin, C. Kiesling, S. K. Choi, S. Watanuki, G. Varner, Y-J Kwon, P. Pakhlov, E. Guido, B. Shwartz, Wei-Shu Hou, T. Matsuda, T. Luo, Zhengkang Zhang, M. Starič, T. E. Browder, I. Pavelkin, E. Waheed, S. Jia, M. E. Sevior, D. M. Asner, M. Iwasaki, O. Schneider, G. Pakhlova, C. W. Park, T. Nanut, K. Hayasaka, S. Paul, Y. Sakai, V. Shebalin, Prafulla Kumar Behera, Y. Choi, M. T. Hedges, J. Haba, R. Mizuk, H. Farhat, A. Garmash, J. E. Fast, I. Jaegle, H. K. Moon, G. Bonvicini, M. Takizawa, Y. Iwasaki, M. Niiyama, T. Uglov, R. Itoh, T. Ferber, L. Li Gioi, P. Goldenzweig, S. Uno, K. Inami, Y. Yamashita, V. Zhukova, C. Van Hulse, Li-Xin Li, W. W. Jacobs, B. G. Cheon, Semen Eidelman, O. Grzymkowska, Takao Mori, D. Červenkov, S. Uehara, E. Won, H. Ono, A. Zupanc, J. S. Lange, R. Ayad, T. Sumiyoshi, X. L. Wang, H. Hayashii, S. Zakharov, Iki Adachi, Doo Young Kim, V. Chekelian, Pavel Krokovny, Y. Unno, M. Salehi, G. Schnell, P. Križan, T. Czank, K. J. Nath, F. Tenchini, V. Babu, S. Di Carlo, G. Karyan, H. B. Jeon, B. Pal, A. Ishikawa, Y. Seino, A. Bozek, M. Nakao, D. Liventsev, V. Aulchenko, Y. Yusa, A. Vinokurova, S. Sandilya, M. Masuda, T. K. Pedlar, A. Chen, V. Popov, N. Dash, E. Solovieva, D. Kotchetkov, Jyoti Prakash Biswal, Leo Piilonen, R. Pestotnik, Frank Simon, B. Bhuyan, T. Julius, H. Aihara, Y. Usov, S. Ogawa, Z. Drásal, J. G. Shiu, Kiyoshi Tanida, Y. Jin, K. H. Kang, and Z. Doležal

Subjects
Physics, Particle physics, Angular distribution, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Open charm, Radiation, 010306 general physics, 01 natural sciences
Abstract

We report a new measurement of the exclusive ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}^{(*)\ifmmode\pm\else\textpm\fi{}}{D}^{*\ensuremath{\mp}}$ cross sections as a function of the center-of-mass energy from the ${D}^{(*)\ifmmode\pm\else\textpm\fi{}}{D}^{*\ensuremath{\mp}}$ threshold through $\sqrt{s}=6.0\text{ }\text{ }\mathrm{GeV}$, using the initial-state radiation technique. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of $951\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. The accuracy of the cross section measurement is increased by a factor of 2 over the first Belle study. We perform the first angular analysis of the ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}^{*\ifmmode\pm\else\textpm\fi{}}{D}^{*\ensuremath{\mp}}$ process and decompose this exclusive cross section into three components corresponding to the ${D}^{*}$ helicities.

Published
2018
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32. 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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33. 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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34. 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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35. 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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36. 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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37. 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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38. 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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39. 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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40. 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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41. 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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42. Measurement of the τ Lepton Polarization and R(D*) in the Decay B¯→D*τ−ν¯τ

Author

J. G. Shiu, H. Farhat, S. Okuno, Phillip Urquijo, Kevin Varvell, L. E. Piilonen, D. Dutta, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, Y. Choi, Y. Ushiroda, K. K. Joo, E. Won, Liangbin Li, A. Rostomyan, J. Libby, M. Niiyama, L. Pesántez, K. Trabelsi, T. Mori, H. Aihara, D. Greenwald, Vikas Bansal, I. Adachi, M. Lubej, K. Hayasaka, C. H. Li, C. P. Shen, C. L. Hsu, Soumen Paul, Peter Kodys, W. W. Jacobs, T. Julius, J. Grygier, V. Babu, G. Schnell, T. Iijima, M. Takizawa, T. Aushev, Y. Seino, B. G. Cheon, D. Epifanov, C. Van Hulse, T. Ferber, N. K. Nisar, Y. Iwasaki, Y. J. Kwon, John Yelton, R. Itoh, D. M. Asner, S. Eidelman, S. Di Carlo, A. Bondar, Z. Doležal, S. Nishida, T. Kuhr, A. Vossen, O. Schneider, T. Schlüter, O. Seon, Frank Simon, D. Cinabro, A. Zupanc, S. Korpar, D. Kotchetkov, R. Mizuk, V.N. Zhilich, K. Chilikin, Z. P. Zhang, A. Chen, G. Inguglia, Mikhail Danilov, M. Watanabe, H. Park, Jochen Dingfelder, Z. Drásal, T. E. Browder, S. Ogawa, K. Miyabayashi, I. Badhrees, Z. Natkaniec, B. Golob, S. Sandilya, M. J. Kim, R. Ayad, W. Ostrowicz, U. Tamponi, H. K. Moon, A. Bozek, P. Chang, G. Pakhlova, Yoshinobu Unno, B. Pal, Massimo Berger, J. S. Lange, P. L. Wang, M. Starič, F. Tenchini, T. Sumiyoshi, B. Bhuyan, K. Sumisawa, Jyoti Prakash Biswal, Meng Wang, C. Z. Yuan, H. Miyake, D. Y. Kim, I. Jaegle, T. Matsuda, S. Uno, Martin Ritter, K. Adamczyk, V.E. Shebalin, Yuki Sato, C. H. Wang, T. Sanuki, V. Gaur, E. Solovieva, K. T. Kim, Y. Yamashita, R. Chistov, M. Masuda, N. Dash, V. Savinov, D. Joffe, H. Kichimi, S. Al Said, R. Kumar, H. Ye, H. Ono, W. S. Hou, T. Kawasaki, S. Hirose, M. Rozanska, G. Bonvicini, Junho Kim, K. Prasanth, K. Senyo, M. Uchida, Kazuhiko Hara, M. Nayak, Yang Li, R. Pestotnik, K. J. Nath, P. Pakhlov, H. Atmacan, G. S. Varner, T. Luo, C. Schwanda, Y. Sakai, Takeo Higuchi, S. H. Kim, P. Krokovny, Yu. V. Usov, B. G. Fulsom, L. Li Gioi, A. Garmash, K. Cho, Y. Kato, T. Nanut, R. Mussa, A. Ishikawa, M. Nakao, C. W. Park, P. Križan, Andrey Sokolov, James E. Fast, T. Uglov, K. Kinoshita, Luka Santelj, K. Inami, R. Kulasiri, J. F. Strube, H. Hayashii, J. Haba, Y. Onuki, J. Hasenbusch, V. M. Aulchenko, G. B. Mohanty, E. L. Barberio, D. Liventsev, Vladimir Zhulanov, Y. Jin, M. E. Sevior, P. Goldenzweig, Y. Watanabe, A. M. Bakich, J. MacNaughton, N. Gabyshev, D. Červenkov, Eberhard Widmann, D. Matvienko, C. Kiesling, and M. Bračko

Subjects
Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, General Physics and Astronomy, Elementary particle, Electron, 01 natural sciences, Positron, KEKB, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract

We report the first measurement of the tau lepton polarization P-tau(D*) in the decay (B) over bar -> D* tau(-) (v) over bar (tau) as well as a newmeasurement of the ratio of the branching fractions R(D*) = B((B) over bar -> D* tau(-) (v) over bar (tau)) / B((B) over bar -> D* l(-) (v) over bar (l)), where l(-) denotes an electron or a muon, and the tau is reconstructed in the modes tau(-) -> pi(-) v(tau) and tau(-) -> rho(-) v(tau). We use the full data sample of 772 x 10(6) B (B) over bar pairs recorded with the Belle detector at the (KEKB) over bar electron-positron collider. Our results, P-tau(D*) = -0.38 +/- 0.51 (stat)(-0.16)(+0.21) (syst) and R(D*) = 0.270 +/- 0.035 (stat)(- 0.025)(+0.028) (syst), are consistent with the theoretical predictions of the standard model.

Published
2017
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43. First measurement of T -odd moments in D0→KS0π+π−π0 decays

Author

G. Schnell, S. Ogawa, M. Starič, I. Jaegle, K. Miyabayashi, I. Badhrees, M. Z. Wang, K. Kinoshita, B. Shwartz, T. Kuhr, R. Mizuk, H. Ono, Y. Yusa, A. Garmash, H. Yamamoto, K. Senyo, D. Liventsev, Y. Unno, V. Babu, T. Kawasaki, T.-A. Shibata, A. Rostomyan, V. Chekelian, V. M. Aulchenko, Victoria Zhukova, I. Adachi, T. Aushev, Hua Ye, K. Sumisawa, D. M. Asner, A. Chen, M. Niiyama, L. Pesántez, B. K. Pal, P. Goldenzweig, T. Ferber, M. Salehi, T. Nanut, K. Inami, S. Sandilya, A. Zupanc, M. J. Kim, T. Matsuda, B. Bhuyan, A. M. Bakich, Seema Bahinipati, K. J. Nath, M. Uchida, Z. Drásal, T. Hara, L. Santelj, M. Masuda, B. G. Fulsom, L. K. Li, G. B. Mohanty, T. Kumita, G. Bonvicini, T. E. Browder, Z. P. Zhang, S. Nishida, H. Miyata, R. Ayad, R. Mussa, P. Wang, Massimo Berger, Hiroaki Aihara, A. J. Schwartz, A. Bozek, H. B. Jeon, A. Vinokurova, S. Uehara, D. Kotchetkov, Y. Iwasaki, Y. J. Kwon, P. Krokovny, Z. Natkaniec, A. Bobrov, P. Pakhlov, S. H. Kim, B. G. Cheon, D. Matvienko, C. Z. Yuan, E. Waheed, O. Schneider, K. Chilikin, Y. J. Kim, A. Ishikawa, Peter Kodys, K. H. Kang, K. Cho, W. W. Jacobs, Y. Sakai, E. Barberio, N. K. Nisar, H. K. Moon, K. Trabelsi, K. K. Joo, H. Park, C. P. Shen, A. Kuzmin, J. S. Lange, S. Di Carlo, M. Nayak, G. Karyan, Yukinori Sato, G. Varner, T. Uglov, A. B. Kaliyar, K. Hayasaka, S. Uno, J. G. Shiu, D. Epifanov, Samo Korpar, R. Pestotnik, M. T. Hedges, Ya-Qiu Jin, E. Won, H. Farhat, J. B. Kim, Phillip Urquijo, V. Bhardwaj, P. Križan, W. S. Hou, N. Dash, E. Solovieva, Rahul Kumar, V. Vorobyev, V.E. Shebalin, S. Al Said, Leo Piilonen, D. Joffe, A. Vossen, Frank Simon, C. Schwanda, Jyoti Prakash Biswal, T. Sumiyoshi, V. Gaur, Andrey Sokolov, M. Nakao, Chawon Park, V. V. Zhulanov, Y. Yook, Semen Eidelman, Y. Watanabe, T. Mori, D. Y. Kim, G. Pakhlova, R. Kulasiri, T. Julius, R. Chistov, R. Itoh, R. Sinha, F. Tenchini, C. Pulvermacher, Martin Ritter, T. Sanuki, L. Li Gioi, Y. Yamashita, K. T. Kim, Tao Luo, K. Tanida, D. Cinabro, Dipanwita Dutta, R. Gillard, C. Kiesling, C. H. Li, C. B. Van Hulse, M. Bračko, S. K. Choi, Eberhard Widmann, J. F. Strube, J. Libby, M. Lubej, K. Prasanth, Y. Seino, S. Okuno, N. Gabyshev, M. E. Sevior, I. S. Lee, J. E. Fast, A.E. Bondar, J. Haba, M. Takizawa, D. Červenkov, K. M. Williams, John Yelton, Y. Choi, Z. Doležal, Daniel Greenwald, V. Bansal, M. Watanabe, U. Tamponi, C. H. Wang, S. Paul, and V.N. Zhilich

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, media_common.quotation_subject, 01 natural sciences, Asymmetry, Belle experiment, Charm quark, Luminosity, Nuclear physics, KEKB, 0103 physical sciences, Pi, CP violation, 010306 general physics, media_common
Abstract

We report the first measurement of the T-odd moments in the decay D-0 -> K-S(0) pi + pi(-)pi(0) from a data sample corresponding to an integrated luminosity of 966 fb(-1) collected by the Belle experiment at the KEKB asymmetric-energy e(+)e(-) collider. From these moments we determine the CP-violation-sensitive asymmetry a(CP)(T-odd) = [-0.28 +/- 1.38 (stat.)(-0.76)(+0.23) (syst.)] x 10(-3) , which is consistent with no CP violation. In addition, we perform a(CP)(T-odd) measurements in different regions of the D-0 -> K-S(0) pi + pi(-)pi(0) phase space;these are also consistent with no CP violation.

Published
2017
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44. Lepton-Flavor-Dependent Angular Analysis of B→K*ℓ+ℓ−

Author

G. B. Mohanty, Vikas Bansal, E. Nakano, Y. Yusa, C. Van Hulse, T. Sumiyoshi, D. Joffe, M. Uchida, T. Schlüter, Tariq Aziz, Dipanwita Dutta, Yang Li, K. J. Nath, A. Zupanc, A. Bozek, Soumen Paul, S. E. Vahsen, J. Libby, M. Lubej, C. H. Li, James E. Fast, Luka Santelj, Eberhard Widmann, T. Luo, Y. Yook, C. L. Hsu, Semen Eidelman, B. Pal, R. Mussa, W. Bartel, H. B. Jeon, R. Kulasiri, B. G. Fulsom, A. Ishikawa, L. Pesántez, S. Wehle, B. Bhuyan, Yuki Sato, M. Nakao, L. Koch, Y. Seino, C. W. Park, Hiroaki Aihara, N. Gabyshev, P. Križan, Elisa Guido, Y. Ushiroda, C. Niebuhr, M. T. Hedges, Y. Yamashita, A. Bobrov, R. Chistov, J. Rauch, G. Schnell, C. Z. Yuan, V. Savinov, H. Ye, G. Varner, J. G. Shiu, S. Sandilya, K. Senyo, I. Jaegle, K. Inami, T. A. Shibata, K. Trabelsi, M. J. Kim, D. Liventsev, Prafulla Kumar Behera, C. P. Shen, H. Miyake, T. Kuhr, V. Babu, M. Starič, Z. Drásal, T. Aushev, Ihn Sik Seong, Phillip Urquijo, Peter Kodys, W. W. Jacobs, Liangbin Li, A. Rostomyan, T. Kumita, K. Sumisawa, T. Kawasaki, V. Chekelian, H. Ono, D. Červenkov, T. Ferber, T. Matsuda, J. F. Strube, T. E. Browder, P. Wang, G. Bonvicini, H. Hayashii, G. Karyan, Y. Onuki, D. Cinabro, E. Solovieva, H. Kichimi, S. Al Said, K. T. Kim, G. Inguglia, Meng Wang, Y. Iwasaki, R. Gillard, S. H. Kim, P. Chang, Y. J. Kwon, N. Dash, K. Hayasaka, P. Krokovny, V.M. Aulchenko, C. Pulvermacher, M. Watanabe, K. Kinoshita, U. Tamponi, H. Park, A. Kuzmin, F. Tenchini, T. Tsuboyama, O. Schneider, C. Kiesling, K. H. Kang, K. Cho, M. Masuda, C. H. Wang, R. Sinha, D. Epifanov, Toru Iijima, L. Li Gioi, A.E. Bondar, S. Yashchenko, M. Bračko, C. S. Park, O. Grzymkowska, M. Takizawa, Y. Sakai, T. Julius, Y. Choi, Z. Doležal, D. Kotchetkov, T. Hara, S. Ogawa, R. Mizuk, K. Chilikin, M. Nayak, R. Ayad, R. Itoh, Victoria Zhukova, C. Schwanda, K. M. Williams, A. Chen, Leo Piilonen, J. Haba, A. Vossen, O. Seon, Frank Simon, B.A. Shwartz, D. Y. Kim, Z. P. Zhang, S. Nishida, Vladimir Zhulanov, Y. Jin, M. E. Sevior, Jochen Dingfelder, P. Goldenzweig, Iki Adachi, Martin Ritter, Z. Natkaniec, J. B. Kim, A. M. Bakich, B. G. Cheon, T. Sanuki, D. M. Asner, Samo Korpar, B. Golob, E. Barberio, A. B. Kaliyar, J. S. Lange, M. Ziegler, W. S. Hou, V. Vorobyev, S. Uno, A. Garmash, K. K. Joo, E. Won, Kevin Varvell, T. Nanut, Hitoshi Yamamoto, Y. Watanabe, T. Mori, Y. Usov, N. K. Nisar, G. Pakhlova, V.N. Zhilich, Jyoti Prakash Biswal, K. Miyabayashi, V. Gaur, E. Waheed, H. Farhat, T. Uglov, P. Katrenko, A. J. Schwartz, H. J. Kim, and Yoshinobu Unno

Subjects
Physics, Particle physics, Muon, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, Sigma, Observable, Elementary particle, 01 natural sciences, Nuclear physics, KEKB, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Flavor, Lepton
Abstract

We present a measurement of angular observables and a test of lepton flavor universality in the B -> K(+)l(+)l(-) decay, where l is either e or mu. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb(-1) containing 772 x 10(6) B (B) over bar pairs, collected at the Upsilon(4S) resonance with the Belle detector at the asymmetric-energy e(+)e(-) collider KEKB. The result is consistent with standard model (SM) expectations, where the largest discrepancy from a SM prediction is observed in the muon modes with a local significance of 2.6 sigma.

Published
2017
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45. Observation of D0→ρ0γ and Search for CP Violation in Radiative Charm Decays

Author

A. Ishikawa, A. Garmash, C. S. Park, M. Nakao, C. W. Park, Marko Petrič, Jyoti Prakash Biswal, A. M. Bakich, A. Bondar, S. Korpar, I. Jaegle, Yang Li, V.N. Zhilich, Y. Choi, K. J. Nath, M. Nayak, J. Rauch, V. Gaur, J. Libby, J. G. Shiu, M. Lubej, K. Hayasaka, C. H. Li, K. T. Kim, K. Miyabayashi, I. Badhrees, K. Trabelsi, K. Senyo, Semen Eidelman, M. Masuda, C. P. Shen, Luka Santelj, C. Pulvermacher, F. Tenchini, S. Sandilya, V. Babu, T. Aushev, N. K. Nisar, T. E. Browder, H. Park, A. Bozek, M. J. Kim, T. Ferber, R. Gillard, B. G. Cheon, Y. Sakai, Y. Seino, S. K. Choi, G. Schnell, T. Iijima, N. Gabyshev, D. Červenkov, T. Sumiyoshi, Victoria Zhukova, Martin Ritter, A. Vossen, O. Seon, R. Ayad, Y. Yamashita, M. Uchida, L. Li Gioi, S. Okuno, A. Chen, V. Bhardwaj, A. Kuzmin, J.E. Fast, T. K. Pedlar, M. Starič, T. Sanuki, S. Ogawa, T. Kuhr, Soumen Paul, R. Kulasiri, D. Liventsev, Vladimir Zhulanov, N. Dash, M. E. Sevior, I. S. Lee, P. Goldenzweig, T. Matsuda, S. Al Said, D. Y. Kim, S. Uno, A. B. Kaliyar, M. Bračko, G. S. Varner, D. Cinabro, K. Prasanth, H. K. Moon, A. Vinokurova, Eberhard Widmann, T. Nanut, Liangbin Li, Peter Kodys, W. W. Jacobs, J. S. Lange, D. Matvienko, G. Inguglia, S. H. Kim, V. M. Aulchenko, U. Tamponi, A. Rostomyan, R. Pestotnik, Y. Ushiroda, K. H. Kang, K. Cho, L. Pesántez, Samo Stanič, S. Di Carlo, A. Zupanc, J. Yamaoka, M. Takizawa, G. B. Mohanty, V. Chekelian, Y. J. Kwon, B. G. Fulsom, E. Solovieva, Y. Watanabe, K. Inami, R. Mizuk, L. E. Piilonen, I. Adachi, O. Schneider, B. Shwartz, C. H. Wang, John Yelton, Z. Doležal, J. B. Kim, B. Pal, C. Schwanda, W. S. Hou, T. Julius, D. Joffe, Hiroaki Aihara, J. Stypula, T. A. Shibata, J. F. Strube, Z. P. Zhang, H. Miyata, Prafulla Kumar Behera, Y. Iwasaki, V. Vorobyev, H. Hayashii, T. Kawasaki, Yuki Sato, P. Krokovny, R. Chistov, K. Kinoshita, V. Savinov, V.E. Shebalin, K. K. Joo, E. Won, Vikas Bansal, D. M. Asner, T. Schlüter, Dipanwita Dutta, P. L. Wang, Meng Wang, P. Pakhlov, H. Farhat, B. Golob, S. Nishida, A. J. Schwartz, and G. Pakhlova

Subjects
Physics, Particle physics, KEKB, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, Radiative transfer, General Physics and Astronomy, CP violation, 010306 general physics, 01 natural sciences
Abstract

We report the first observation of the radiative charm decay D-0 -> rho(0)gamma and the first search for CP violation in decays D-0 -> rho(0)gamma, phi gamma, and (K) over bar (*0)(892)gamma, using a data sample of 943 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The branching fraction is measured to be B(D-0 -> rho(0)gamma) = (1.77 +/- 0.30 +/- 0.07) x 10(-5), where the first uncertainty is statistical and the second is systematic. The obtained CP asymmetries A(CP)(D-0 ->rho(0)gamma) = +0.056 +/- 0.152 +/- 0.006, A(CP)(D-0 -> phi gamma) = -0.094 +/- 0.066 +/- 0.001, and A(CP)(D-0 -> (K) over bar (*0) gamma = -0.003 +/- 0.020 +/- 0.000 are consistent with no CP violation. We also present an improved measurement of the branching fractions B(D-0 -> phi gamma) = (2.76 +/- 0.19 +/- 0.10) x 10(-5) and B(D-0 -> (K) over bar (*0) gamma = (4.66 +/- 0.21 +/- 0.21) x 10(-4).

Published
2017
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46. Search for the 0−− glueball in ϒ(1S) and ϒ(2S) decays

Author

M. Niiyama, H. Miyata, S. Ogawa, Tao Luo, A. Zupanc, K. Tanida, R. Mizuk, M. Uchida, L. K. Li, S. Okuno, G. Pakhlova, R. Kulasiri, J. G. Shiu, K. Suzuki, T. Matsuda, H. Farhat, J. B. Kim, H. Kichimi, L. Li Gioi, Y. Yamashita, G. Schnell, Phillip Urquijo, M. Nayak, T. Julius, D. Y. Kim, R. Ayad, B. Golob, E. Barberio, G. Varner, Hiroaki Aihara, P. Goldenzweig, K. Chilikin, Y. J. Kim, G. Bonvicini, N. K. Nisar, C. Z. Yuan, Eberhard Widmann, B. G. Cheon, T. Kuhr, H. K. Moon, J. F. Strube, S. Sandilya, J. Libby, M. Lubej, D. Matvienko, Leo Piilonen, Y. B. Li, M. Takizawa, J. S. Lange, M. Masuda, D. Joffe, A. Bozek, M. J. Kim, A. Garmash, Dipanwita Dutta, C. H. Li, M. Sumihama, R. Itoh, C. P. Shen, Y. Seino, John Yelton, Y. Choi, Z. Doležal, K. Hayasaka, H. Ye, S. H. Kim, M. T. Hedges, M. E. Sevior, V. Babu, K. T. Kim, D. Cinabro, Samo Korpar, T. Aushev, Jyoti Prakash Biswal, R. Gillard, K. H. Kang, K. Cho, G. Inguglia, S. Uno, Frank Simon, N. Gabyshev, T. Ferber, K. Senyo, V.N. Zhilich, S. K. Choi, D. Liventsev, P. Chang, D. M. Asner, T. Sumiyoshi, C. Pulvermacher, Martin Ritter, F. Tenchini, Andrey Sokolov, Peter Kodys, E. Won, M. Starič, I. Jaegle, K. Miyabayashi, T. Kawasaki, T. Nanut, P. Katrenko, I. Badhrees, R. Pestotnik, I. Adachi, T. E. Browder, P. Wang, T. Sanuki, Meng Wang, V.E. Shebalin, V. Gaur, Chawon Park, K. K. Joo, S. Di Carlo, M. Nakao, V. V. Zhulanov, S. Al Said, Z. Drásal, Y. J. Kwon, J. Haba, B. Shwartz, J. E. Fast, K. J. Nath, O. Schneider, T. Uglov, A. M. Bakich, T. Hara, L. Santelj, Semen Eidelman, Y. Onuki, N. Dash, A. Ishikawa, W. S. Hou, E. Solovieva, P. Križan, H. Ono, V. Vorobyev, Y. Watanabe, T. Mori, Y. Usov, D. Kotchetkov, Y. Sakai, H. Hayashii, Toru Iijima, W. Ostrowicz, U. Tamponi, P. Krokovny, Hyunyong Kim, Z. P. Zhang, S. Nishida, C. H. Wang, S. Jia, C. Schwanda, T.-A. Shibata, Victoria Zhukova, A. Chen, D. Červenkov, K. Inami, Z. Natkaniec, C. Kiesling, M. Bračko, V. Bansal, P. K. Behera, C. B. Van Hulse, H. Park, A. Kuzmin, B. Bhuyan, B. G. Fulsom, V. Savinov, A. Rostomyan, V. Chekelian, B. K. Pal, and Y. Unno

Subjects
Nuclear physics, Physics, Particle physics, 010308 nuclear & particles physics, Glueball, Branching fraction, Electron–positron annihilation, 0103 physical sciences, 010306 general physics, 01 natural sciences
Abstract

We report the first search for the J(PC) = 0(--) glueball in Upsilon(1S) and Upsilon(2S) decays with data samples of (102 +/- 2) x 10(6) and (158 +/- 4) x 10(6) events, respectively, collected with the Belle detector. No significant signals are observed in any of the proposed production modes, and the 90% credibility level 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 chi(c1) are measured to be B(Upsilon(1S) -> chi(c1) + anything) = (1.90 +/- 0.43(stat) +/- 0.14(syst) x 10(-4) with an improved precision over prior measurements and B Upsilon(2S) -> chi(c1) + anything) = (2.24 +/- 0.44(stat) +/- 0.20(syst) x 10(-4) for the first time.

Published
2017
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47. Search for a dark vector gauge boson decaying toπ+π−usingη→π+π−γdecays

Author

R. Mizuk, S. Nishida, Z. Drásal, Z. Natkaniec, T. Matsuda, H. Miyata, E. L. Barberio, V. Chekelian, E. Nakano, Chawon Park, M. Nayak, T. Schlüter, Dipanwita Dutta, C. H. Li, H. Nakazawa, G. Schnell, T. Iijima, Y. Choi, K. J. Nath, V. V. Zhulanov, P. Krokovny, K. Hayasaka, A. Bobrov, A. Zupanc, L. Santelj, B. G. Cheon, K. H. Kang, K. Cho, M. Masuda, T. Kuhr, K. T. Kim, K. Chilikin, Y. J. Kim, Tao Luo, G. B. Mohanty, R. Gillard, K. Trabelsi, U. Tamponi, B. Bhuyan, Y. Yook, B. G. Fulsom, J. Haba, D. Cinabro, H. Hayashii, C. P. Shen, A. Garmash, Seok Kim, Daniel Greenwald, D. Epifanov, D. Y. Kim, V. Savinov, B. Pal, T.-A. Shibata, V. Bansal, V.N. Zhilich, K. K. Joo, L. E. Piilonen, D. Matvienko, T. Aushev, Y. Watanabe, Peter Kodys, V.E. Shebalin, Yukinori Sato, J. G. Shiu, S. Eidelman, R. Kulasiri, P. Pakhlov, T. K. Pedlar, Y. Sakai, G. Inguglia, M. Takizawa, I. Jaegle, K. Miyabayashi, I. Badhrees, S. Al Said, P. K. Behera, Victoria Zhukova, T. Ferber, Y. Yusa, S. Di Carlo, A. Chen, K. Inami, Z. Doležal, D. Semmler, A. Bozek, H. B. Jeon, Phillip Urquijo, K. Senyo, Ihn Sik Seong, C. Z. Yuan, A. Ishikawa, Y. Iwasaki, Y. J. Kwon, T. Kawasaki, Y. B. Li, K. Kinoshita, S. Uno, J. Yamaoka, C. H. Wang, T. Julius, P. Križan, C. Schwanda, C. B. Van Hulse, M. Uchida, L. K. Li, O. Schneider, S. Paul, L. Li Gioi, M. Bračko, V. Chobanova, H. Farhat, J. B. Kim, D. Liventsev, S. Okuno, R. Chistov, G. S. Varner, P. Goldenzweig, J. Rauch, S. Sandilya, F. Tenchini, M. J. Kim, R. Itoh, H. Ye, N. Dash, M. Starič, T. Sumiyoshi, Meng Wang, C. Pulvermacher, Martin Ritter, J. Libby, T. Sanuki, A. M. Bakich, Y. Seino, J. E. Fast, M. Watanabe, N. Gabyshev, D. Červenkov, I. S. Lee, Eberhard Widmann, D. Joffe, O. Seon, Frank Simon, Y. Unno, I. Adachi, H. Sahoo, T. Uglov, S. Ogawa, Kevin Varvell, R. Ayad, S. Uehara, H. Aihara, Y. Usov, D. M. Asner, Jyoti Prakash Biswal, T. Nanut, V. Gaur, M. Nakao, Z. P. Zhang, E. Won, J. S. Lange, W. S. Hou, and V. Vorobyev

Subjects
Physics, Quark, Gauge boson, Particle physics, 010308 nuclear & particles physics, Fine-structure constant, 01 natural sciences, Belle experiment, law.invention, Baryon, Nuclear physics, KEKB, law, 0103 physical sciences, High Energy Physics::Experiment, Decay chain, 010306 general physics, Collider
Abstract

We report a search for a dark vector gauge boson U' that couples to quarks in the decay chain D*(+) -> D-0 pi(+), D-0 -> K-S(0) eta, eta -> U'gamma, U' -> pi(+)pi- No signal is found and we set a mass-dependent limit on the baryonic fine structure constant of 10(-3)-10(-2) in the U' mass range of 290 to 520 MeV/c(2). This analysis is based on a data sample of 976 fb(-1) collected by the Belle experiment at the KEKB asymmetric-energy e(+)e(-) collider.

Published
2016
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48. Measurement of the branching ratio of B¯0→D*+τ−ν¯τ relative to B¯0→D*+ℓ−ν¯ℓ decays with a semileptonic tagging method

Author

Z. Natkaniec, H. Farhat, J. B. Kim, H. Yamamoto, T. Matsuda, D. Epifanov, Y. Sakai, V. Bhardwaj, T. K. Pedlar, A. Moll, G. Bonvicini, S. L. Olsen, Victoria Zhukova, M. V. Purohit, A. Vinokurova, A. Chen, D. M. Asner, K. Senyo, T. Kawasaki, B. Shwartz, P. Goldenzweig, S. Sandilya, M. Uchida, L. K. Li, A. J. Schwartz, Tao Luo, E. Solovieva, P. Krokovny, K. H. Kang, K. Cho, V. Chobanova, M. J. Kim, M. Starič, D. Liventsev, Tariq Aziz, H. Hayashii, G. Schnell, U. Tamponi, J. Rauch, T. Iijima, G. S. Varner, Y. Ushiroda, E. Nakano, Y. Choi, K. J. Nath, T. Hara, L. Santelj, A. M. Bakich, J. Libby, V.N. Zhilich, D. Joffe, Y. Watanabe, B. Golob, S. Ogawa, R. Itoh, C. B. Van Hulse, N. K. Nisar, B. Bhuyan, A. Rostomyan, P. Wang, Y. Kato, B. G. Fulsom, T.-A. Shibata, K. T. Kim, L. Pesántez, T. Kuhr, O. Seon, Frank Simon, H. B. Jeon, T. Schlüter, Dipanwita Dutta, H. K. Moon, J. S. Lange, I. Jaegle, K. Miyabayashi, I. Badhrees, A. Ishikawa, Y. Iwasaki, C. H. Li, Marko Petrič, N. Gabyshev, D. Červenkov, R. Ayad, Y. J. Kwon, K. Nakamura, O. Schneider, C. H. Wang, K. Trabelsi, Y. Onuki, V. Savinov, Y. Yusa, M. Rozanska, M. Danilov, D. Kotchetkov, Y. Seino, Tara Nanut, K. Hara, C. P. Shen, J. Hasenbusch, S. Paul, L. Li Gioi, Y. Yamashita, E. Won, D. Matvienko, S. Nishida, K. Chilikin, Y. J. Kim, D. Cinabro, K. Inami, Seok Kim, V. Babu, Shigeki Hirose, V. Chekelian, H. Atmacan, T. Horiguchi, P. Chang, T. Aushev, B. K. Pal, S. Eidelman, P. Pakhlov, T. Ferber, K. Adamczyk, S. Okuno, M. Bračko, R. Pestotnik, M. Takizawa, A. Garmash, Daniel Greenwald, J. Yamaoka, A. Bozek, V. Bansal, K. M. Williams, M. Z. Wang, K. Kinoshita, John Yelton, M. E. Sevior, W. S. Hou, J. E. Fast, Z. Doležal, A. Zupanc, J. F. Strube, H. Miyata, Chawon Park, P. K. Behera, V. V. Zhulanov, V. Vorobyev, Samo Stanič, Y. Yook, K. Hayasaka, C. Z. Yuan, D. Y. Kim, R. Mizuk, M. Masuda, G. B. Mohanty, B. G. Cheon, S. Korpar, Peter Kodys, P. Katrenko, S. Di Carlo, L. E. Piilonen, N. Dash, K. Negishi, G. Pakhlova, Yukinori Sato, J. G. Shiu, T. Julius, Phillip Urquijo, Y. B. Li, R. Chistov, F. Tenchini, T. Sumiyoshi, H. Aihara, Y. Usov, Z. P. Zhang, S. Uno, C. Schwanda, Jyoti Prakash Biswal, Rahul Kumar, V. Gaur, M. Nakao, V.E. Shebalin, and M. Nayak

Subjects
Physics, Particle physics, Muon, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Resonance, 01 natural sciences, Standard Model, Nuclear physics, KEKB, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics, Bar (unit)
Abstract

We report a measurement of the ratio R(D*) = B((B) over bar (0) -> D*(+)tau(-)(nu) over bar (tau))/B((B) over bar (0) -> D*(+)l(-)(nu) over bar (l))where l denotes an electron or a muon. The results are based on a data sample containing 772 x 10(6) B (B) over bar pairs recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We select a sample of B-0(B) over bar (0) pairs by reconstructing both B mesons in semileptonic decays to D*(-/+)l(+/-). We measure R(D*) = 0.302 +/- 0.030(stat) +/- 0.011(syst), which is within 1.6 sigma of the Standard Model theoretical expectation, where the standard deviation sigma includes systematic uncertainties. We use this measurement to constrain several scenarios of new physics in a model-independent approach.

Published
2016
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49. Energy Scan of thee+e−→hb(nP)π+π−(n=1, 2) Cross Sections and Evidence forϒ(11020)Decays into Charged Bottomoniumlike States

Author

A. Drutskoy, M. Niiyama, T. Matsuda, S. Uno, S. L. Olsen, K. Trabelsi, G. Bonvicini, J. Libby, C. H. Li, S. H. Kim, P. Krokovny, C. L. Hsu, C. Pulvermacher, K. H. Kang, Y. Watanabe, T. Aushev, Marko Petrič, A. Zupanc, K. Senyo, S. Nishida, Y. Seino, J. G. Shiu, B.A. Shwartz, T. Sumiyoshi, J. Dalseno, N. K. Nisar, Peter Kodys, T. Ferber, Martin Ritter, P. Katrenko, Y. Yamashita, M. Uchida, T. Sanuki, D. Matvienko, Phillip Urquijo, E. Nakano, D. Liventsev, V. Chobanova, D. Cinabro, T. K. Pedlar, A. Moll, Vladimir Zhulanov, G. Schnell, B. Pal, Z. P. Zhang, A. Garmash, K. Negishi, H. Li, M. E. Sevior, M. Lubej, Y. Onuki, L. E. Piilonen, P. Goldenzweig, D. M. Asner, G. Inguglia, C. Van Hulse, V. Zhukova, D. Semmler, G. S. Varner, J. Stypula, T. Luo, M. Masuda, Daniel Greenwald, T. Schlüter, R. Mizuk, C. Z. Yuan, D. A. Epifanov, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, I. Tikhomirov, P. Wang, S. Okuno, V.M. Aulchenko, T. Julius, T. Kuhr, S.I. Eidelman, B. G. Fulsom, G. B. Mohanty, B. G. Cheon, K. Hayasaka, E. L. Barberio, Y. Teramoto, H. Atmacan, Y. Unno, Ruslan Chistov, Yongsun Kim, Jyoti Prakash Biswal, R. Ayad, S. Korpar, D. Y. Kim, C. Schwanda, P. Pakhlov, V. Gaur, I. Adachi, J. Yamaoka, J. B. Kim, H. J. Kim, E. Solovieva, A.E. Bondar, M. Takizawa, G. Pakhlova, A. Kuzmin, Kiyoshi Tanida, T. Hara, H. Aihara, N. Dash, Y. Usov, S. Ogawa, V. Bhardwaj, D. Kotchetkov, K. M. Williams, A. Chen, John Yelton, Z. Doležal, X. L. Wang, H. Park, Mikhail Danilov, A. Bozek, K. T. Kim, Tara Nanut, R. Gillard, T. Uglov, L. Li Gioi, S. K. Choi, O. Seon, Frank Simon, Y. Choi, K. J. Nath, R. Pestotnik, C. H. Wang, B. Bhuyan, T. E. Browder, Y. Sakai, Y. M. Goh, A. Bobrov, V.E. Shebalin, H. Hayashii, V. Savinov, Soumen Paul, Liangbin Li, V. Chekelian, K. Chilikin, K. Inami, M. Z. Wang, K. Kinoshita, U. Tamponi, V.N. Zhilich, I. Jaegle, S. Sandilya, K. Miyabayashi, I. Badhrees, M. J. Kim, M. Bračko, M. Starič, Y. Iwasaki, Y. J. Kwon, O. Schneider, B. Golob, A. M. Bakich, J. S. Lange, E. Won, D. Červenkov, W. S. Hou, V. Vorobyev, A. Ishikawa, M. Nakao, and C. W. Park

Subjects
Physics, KEKB, Isovector, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Pi, General Physics and Astronomy, Intermediate state, Atomic physics, 010306 general physics, 01 natural sciences
Abstract

Using data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we measure the energy dependence of the e(+)e(-) -> h(b)(nP)pi(+)pi(-) (n = 1, 2) cross sections from thresholds up to 11.02 GeV. We find clear gamma(10860) and gamma(11020) peaks with little or no continuum contribution. We study the resonant substructure of the gamma(11020) -> h(b)(nP)pi(+)pi(_) transitions and find evidence that they proceed entirely via the intermediate isovector states Z(b)(10610) and Z(b)(10650). The relative fraction of these states is loosely constrained by the current data: The hypothesis that only Z(b)(10610) is produced is excluded at the level of 3.3 standard deviations, while the hypothesis that only Z(b)(10650) is produced is not excluded at a significant level.

Published
2016
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50. Study of excitedΞcstates decaying intoΞc0andΞc+baryons

Author

M. Starič, J. E. Fast, T. Matsuda, B. Bhuyan, K. Miyabayashi, I. Badhrees, B. G. Fulsom, M. Takizawa, G. Bonvicini, P. Goldenzweig, S. Sandilya, K. M. Williams, V.E. Shebalin, John Yelton, Y. Choi, A. Vinokurova, K. T. Kim, R. Gillard, F. Tenchini, E. Barberio, G. Pakhlova, M. E. Sevior, S. H. Kim, U. Tamponi, D. Cinabro, H. B. Jeon, G. Inguglia, V. Savinov, H. K. Moon, J. S. Lange, T. Kumita, M. Danilov, M. Niiyama, G. Schnell, A. Ishikawa, C. H. Wang, T. Aushev, K. H. Kang, K. Cho, T. E. Browder, Jyoti Prakash Biswal, T. Julius, K. Hayasaka, M. Sumihama, M. Uchida, M. Nayak, H. Farhat, Z. P. Zhang, P. Wang, J. B. Kim, S. Nishida, T. Ferber, G. Varner, V. Gaur, S. Uno, L. K. Li, Eberhard Widmann, J. F. Strube, E. Won, T. Sumiyoshi, Andrey Sokolov, Y. Iwasaki, B. Pal, S. Paul, B. G. Cheon, Y. J. Kwon, D. Matvienko, A. Zupanc, T. K. Pedlar, O. Schneider, Samo Korpar, N. Dash, Chawon Park, S. Okuno, C. Schwanda, A. Moll, E. Solovieva, R. Itoh, V. V. Zhulanov, A. Rostomyan, J. G. Shiu, Phillip Urquijo, Y. B. Li, Hiroaki Aihara, Peter Kodys, N. Gabyshev, Y. Watanabe, V. M. Aulchenko, Y. Usov, C. Z. Yuan, A. Garmash, W. W. Jacobs, T. Schlueter, Tao Luo, C. Pulvermacher, Samo Stanič, K. Tanida, Zdenek Dolezal, Martin Ritter, D. Kotchetkov, T. Sanuki, D. M. Asner, S. Di Carlo, Semen Eidelman, T. Nanut, W. S. Hou, C. P. Shen, Y. Sakai, Hui Li, K. Negishi, I. Adachi, D. Y. Kim, J. Libby, M. Lubej, S. Ogawa, P. Pakhlov, P. Krizan, R. Mizuk, H. Miyata, T. Uglov, K. Senyo, Leo Piilonen, D. Joffe, D. Liventsev, H. Park, A. Kuzmin, Y. Seino, A. M. Bakich, O. Seon, Dipanwita Dutta, C. H. Li, R. Ayad, M. Bračko, M. Masuda, G. B. Mohanty, D. Červenkov, Victoria Zhukova, T.-A. Shibata, A. Chen, Seema Bahinipati, K. J. Nath, T. Hara, L. Santelj, Z. Drásal, P. Krokovny, A. Bozek, K. Chilikin, P. K. Behera, E. Kato, H. Hayashii, R. Pestotnik, K. K. Joo, C. B. Van Hulse, M. Z. Wang, K. Kinoshita, V.N. Zhilich, and Y. Kato

Subjects
Physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Nuclear physics, Baryon, KEKB, Pion, Photon emission, Excited state, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, 010306 general physics, Ground state
Abstract

Using a data sample of 980 fb(-1) of e(+)e(-) annihilation data taken with the Belle detector operating at the KEKB asymmetric-energy e(+)e(-) collider, we report the results of a study of excited Xi(c) states that decay, via the emission of photons and/or charged pions, into Xi(0)(c) or Xi(+)(c) ground state charmed-strange baryons. We present new measurements of the masses of all members of the Xi(0)(c), Xi(c)(2645), Xi(c)(2790), Xi(c)(2815), and Xi(c)(2980) isodoublets, measurements of the intrinsic widths of those that decay strongly, and evidence of previously unknown transitions.

Published
2016
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