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4 results on '"Giacomo De Pietro"'

1. Track finding at Belle II

Author

Thomas Hauth, Tobias Schlüter, Nils Braun, Nicolas Gosling, Laura Zani, Eugenio Paoloni, Giulio Dujany, Benjamin Schwenker, Cyrille Praz, Valerio Bertacchi, T. Kuhr, Navid Rad, Giulia Casarosa, Armine Rostomyan, Felix Metzner, C. Wessel, B. Scavino, Oliver Frost, Thomas Lueck, Alberto Martini, Michael Eliachevitch, Rudolf Frühwirth, Henrikas Svidras, Yuma Uematsu, Patrick Ecker, Aiqiang Guo, Petar Rados, C. Pulvermacher, M. T. Prim, Martin Ritter, S. Spataro, S. Cunliffe, Claus Kleinwort, Jakob Lettenbichler, M. Heck, Dmitrii Neverov, T. Bilka, Luigi Corona, Uwe Gebauer, F. Tenchini, Sebastian Racs, Sourav Kanti Patra, Filippo Dattola, Giacomo de Pietro, G. Rizzo, James Webb, S. Kurz, Thanh van Dong, Carsten Niebuhr, Michael de Nuccio, Sasha Glazov, Leo Piilonen, Gaetano de Marino, B. Spruck, Jakub Kandra, Mateusz Kaleta, Peter Kvasnicka, Tristan Fillinger, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), and Belle II Tracking Group

Subjects
data analysis method, Physics - Instrumentation and Detectors, Computer science, Real-time computing, FOS: Physical sciences, General Physics and Astronomy, BELLE, Track (rail transport), 01 natural sciences, programming, 010305 fluids & plasmas, High Energy Physics - Experiment, Tracking algorithms, High Energy Physics - Experiment (hep-ex), Tracking detectors, Software, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Belle II, ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Spurious relationship, Selection (genetic algorithm), Event reconstruction, business.industry, track data analysis, Instrumentation and Detectors (physics.ins-det), Modular design, Resolution (logic), charged particle, Hardware and Architecture, business, performance
Abstract

Computer physics communications 259, 107610 (2021). doi:10.1016/j.cpc.2020.107610, This paper describes the track-finding algorithm that is used for event reconstruction in the Belle II experiment operating at the SuperKEKB B-factory in Tsukuba, Japan. The algorithm is designed to balance the requirements of a high efficiency to find charged particles with a good track parameter resolution, a low rate of spurious tracks, and a reasonable demand on CPU resources. The software is implemented in a flexible, modular manner and employs a diverse selection of global and local track-finding algorithms to achieve an optimal performance., Published by North Holland Publ. Co., Amsterdam

Published
2021

2. First data at Belle II and dark sector physics

Author

Giacomo De Pietro

Subjects
Physics, Particle physics, Photon, Luminosity (scattering theory), 010308 nuclear & particles physics, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, Belle experiment, law.invention, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), KEKB, Upgrade, law, 0103 physical sciences, Sensitivity (control systems), 010306 general physics, Collider
Abstract

Belle II is a major upgrade of the Belle experiment and operates at the $B$-factory SuperKEKB in Japan. Since the SuperKEKB collider has a design luminosity of 8$\;\times\;$10$^{35}$ cm$^{-2}$s$^{-1}$, about 40 times larger than that of KEKB, Belle II aims to collect 50 ab$^{-1}$ of data over a period of 8 years. The first data taking runs for physics analyses have started in April 2018, with a lower luminosity than the designed one for commissioning purposes. Even with the early dataset, having an integrated luminosity up to 20 fb$^{-1}$, Belle II can improve the current results in the Dark Sector field. In this paper we will present the expected sensitivity of Belle II for invisibly decaying Dark Photons, for Axion-Like Particles and for invisibly decaying $Z^{\prime}$ assuming a $L_{\mu}-L_{\tau}$ model., Comment: 7 pages, 5 figures, BEAUTY 2018, The International Conference on B-Physics at Frontier Machines

Published
2018
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3. Study of $\chi_{bJ}(nP) \rightarrow \omega \Upsilon(1S)$ at Belle

Author

Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Bahinipati, S., Bakich, A. M., Ban, Y., Barberio, E., Barrett, M., Bauer, M., Behera, P., Beleño, C., Bele, C., Belous, K., Bennett, J., Bernlochner, F., Bessner, M., Besson, D., Bhardwaj, V., Bhuyan, B., Bilka, T., Bilokin, S., Biswal, J., Bloomfield, T., Bobrov, A., Bodrov, D., Bondar, A., Bonvicini, G., Bozek, A., Bra V, M., Branchini, P., Braun, N., Breibeck, F., Browder, T. E., Budano, A., Campajola, M., Cao, L., Caria, G., V, D., Chang, M. -C, Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F, Chen, Y., Chen, Y. -T, Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J, Chobanova, V., Choi, S. -K, Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Das, S., Dash, N., Nardo, G., Giacomo De Pietro, Dhamija, R., Di Capua, F., Dingfelder, J., Dole V, Z., Dong, T. V., Dossett, D., Drásal, Z., Dubey, S., Ecker, P., Eidelman, S., Epifanov, D., Feindt, M., Ferber, T., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Goldenzweig, P., Golob, B., Gong, G., Graziani, E., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Gu, T., Guan, Y., Gudkova, K., Guido, E., Guo, H., Haba, J., Hadjivasiliou, C., Halder, S., Hamer, P., Hara, K., Hara, T., Hartbrich, O., Hasenbusch, J., Hayasaka, K., Hayashii, H., Hazra, S., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Villanueva, M. Hernandez, Higuchi, T., Hirose, S., Hoshina, K., Hou, W. -S, Hsiung, Y. B., Hsu, C. -L, Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jang, E. -J, Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, C. W., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, Y., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, H. -J, Kim, J. B., Kim, K. -H, Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kim, Y. -K, Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kody V, P., Koga, Y., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Kri V, P., Kroeger, R., Krohn, J. -F, Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasni V, P., Kwon, Y. -J, Lai, Y. -T, Lalwani, K., Lange, J. S., Laurenza, M., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Limosani, A., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Luo, T., Macnaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Mcneil, J. T., Merola, M., Metzner, F., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Mori, T., Morii, T., Moser, H. -G, Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Panzenböck, E., Pardi, S., Park, C. -S, Park, C. W., Park, H., Park, K. S., Park, S. -H, Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Peng, T., Pes, L., Pestotnik, R., Peters, M., Piilonen, L. E., Podobnik, T., Popov, V., Prasanth, K., Prencipe, E., Prim, M. T., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribe V, E., Ritter, M., R, M., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schmolz, P., Schneider, O., Schnell, G., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Sharma, C., Shebalin, V., Shen, C. P., Shibata, T. -A, Shibuya, H., Shinomiya, S., Shiu, J. -G, Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Sokolov, A., Soloviev, Y., Solovieva, E., Stani V, S., Stari V, M., Steder, M., Stottler, Z. S., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Thampi, A., Tiwary, R., Trabelsi, K., Tsuboyama, T., Uchida, M., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, K., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Hulse, C., Tonder, R., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, D., Wang, E., Wang, M. -Z, Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Werbycka, O., Widmann, E., Wiechczynski, J., Won, E., Xu, X., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yan, W., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, J., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., Zwahlen, N., and HEP, INSPIRE

Subjects
quantum chromodynamics: nonrelativistic, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], triplet, omega(783), hep-ex, Upsilon(9460): electroproduction, High Energy Physics::Phenomenology, bottomonium, chi/b1(10255): branching ratio: measured, BELLE, electron positron: colliding beams, chi mesons: bottom, electron positron: annihilation, High Energy Physics - Experiment, chi/b2(10270): branching ratio: measured, KEK-B, kinematics, +Upsilon%289460%29+omega%28783%29%22">chi/b1(10255) --> Upsilon(9460) omega(783), High Energy Physics::Experiment, chi mesons: hadronic decay, chi/b0(10235): branching ratio: measured, +Upsilon%289460%29+omega%28783%29%22">chi/b2(10270) --> Upsilon(9460) omega(783), talk, Particle Physics - Experiment, experimental results
Abstract

We report results from a study of hadronic transitions of the $\chi_{bJ}(nP)$ states of bottomonium at Belle. The $P$-wave states are reconstructed in transitions to the $\Upsilon(1S)$ with the emission of an $\omega$ meson. The transitions of the $n=2$ triplet states provide a unique laboratory in which to study nonrelativistic quantum chromodynamics, as the kinematic threshold for production of an $\omega$ and $\Upsilon(1S)$ lies between the $J=0$ and $J=1$ states. A search for the $\chi_{bJ}(3P)$ states is also reported.

4. Charm physics prospects at belle II

Author

Giacomo De Pietro

Subjects
Physics, High Energy Physics - Experiment (hep-ex), Particle physics, Upgrade, Meson, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Particle identification, Belle experiment, High Energy Physics - Experiment
Abstract

Belle II is a major upgrade of the Belle experiment and will operate at the $B$-factory SuperKEKB in Japan. Here we discuss the expected sensitivity of Belle II for $D^0 - \bar{D}^0$ mixing and $CP$ violation measurements in the charm sector, which will benefit from a factor 50 increase in statistics and an improved vertex detection and particle identification. The impact on the determination of CKM parameters from the measurements of purely leptonic $D$ mesons decays is discussed. Finally a novel method of flavour tagging to substantially increase the sample of $D^0$ and $\bar{D}^0$ is presented., Comment: 6 pages, 1 figures, EPS-HEP 2017, European Physical Society conference on High Energy Physics

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