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1. Precise Measurement of the D0 and D+ Lifetimes at Belle II

Author: R. Mussa, F. Pham, H. Svidras, T. Lam, A. Ishikawa, L. E. Piilonen, M. Nakao, P. Križan, K. Yoshihara, Concettina Sfienti, P. Oskin, U. Tamponi, M. Iwasaki, T. Iijima, A. Kuzmin, M. Welsch, T. M. G. Kraetzschmar, E.-J. Jang, B. G. Cheon, S. Ogawa, G. Giakoustidis, H. Ono, L. M. Cremaldi, K. Matsuoka, T. Kuhr, G. L. Pinna Angioni, S. E. Vahsen, I. Ueda, S. Pardi, N. Rad, M. Bračko, A. Gabrielli, Antonio Budano, Y. Iwasaki, Y. J. Kwon, J. F. Strube, S. Kohani, L. Lanceri, S. Uehara, Makoto Tabata, Jakub Kandra, N. Rout, P. Leitl, T. V. Dong, W. Gradl, K. Flood, C. Niebuhr, X. Y. Zhou, S. Sandilya, M. Starič, M. Hernandez Villanueva, Hidekazu Kakuno, S. Y. Suzuki, L. Corona, R. Stroili, M. Remnev, S. Baehr, E. Wang, F. Meier, I. Ripp-Baudot, Shih-Chang Lee, S. Pokharel, R. Itoh, S. Jia, Dipak Kumar Sahoo, D. Bodrov, P. Bambade, Luka Santelj, Bruce Yabsley, T. Matsuda, Enrico Bernieri, S. Uno, H. Junkerkalefeld, L. Aggarwal, Sunil Bansal, Y. Unno, C. Murphy, C. Wessel, M. Niiyama, Rok Pestotnik, D. Biswas, T. Tsuboyama, F. Abudinén, M. Piccolo, Takeo Higuchi, Carlos Marinas, J. M. Roney, J. Libby, D. M. Asner, S. Halder, K. Hayasaka, R. Tiwary, C. Miller, C. H. Kim, F. Di Capua, T. Koga, A. B. Kaliyar, A. Pathak, K. Tanida, G. Dujany, H. G. Moser, T. Bilka, Daniel Greenwald, F. Tenchini, S. Prell, Seema Bahinipati, Andrey Sokolov, T. Uglov, B. Paschen, G. De Pietro, B. Shwartz, Y. Uematsu, M. Takizawa, Yu. Onishchuk, A. Vinokurova, S. Dubey, I. Heredia-De La Cruz, K. Hara, Y. Seino, H. Tanigawa, B. Golob, M. Bertemes, C.-L. Hsu, M. Watanabe, H. Ozaki, T. E. Browder, A. Glazov, O. Hartbrich, J. Schueler, M. T. Prim, Takeo Kawasaki, D. Y. Kim, Dmytro Levit, A. Natochii, J. Baudot, C. H. Li, K. Lieret, K. Inami, V. Zhukova, Y. Onuki, A. Fodor, Kouji Nakamura, S. Bilokin, R. Žlebčík, A. Baur, P. Krokovny, Sw. Banerjee, John Yelton, S. Stefkova, Q. D. Zhou, D. Cinabro, R. Giordano, Shuji Tanaka, E. C. Hill, Hamad Ahmed, Q. Y. Liu, M. Dorigo, E. Kovalenko, K. Unger, P. Pakhlov, Rakesh Kumar, T. Podobnik, A. J. Schwartz, Z. Doležal, G. Inguglia, G. Nazaryan, P. Chang, M. Kumar, I. Domínguez Jiménez, V. Bhardwaj, Z. Liptak, E. Bertholet, I. Adachi, F. Forti, M. Mrvar, J. Serrano, H. Ye, M. Barrett, E. Won, K. H. Kang, K. Cho, N. Molina-Gonzalez, A. Passeri, L. Zani, G. Polat, R. Kowalewski, K. Trabelsi, J. Guilliams, G. Finocchiaro, J. Bennett, A. Sangal, G. Casarosa, C. Praz, T. Gu, M. Z. Wang, K. Kinoshita, Peter Kodys, W. W. Jacobs, M. Bessner, G. S. Varner, A. Gellrich, S. Raiz, Abner Soffer, Elisa Manoni, K. Chirapatpimol, S. Reiter, N. Gabyshev, D. Červenkov, Nils Braun, T. Czank, S. Cunliffe, P. L. M. Podesta-Lerma, B. Spruck, I. M. Peruzzi, R. de Sangro, D. Epifanov, M. Campajola, H. Purwar, A. Selce, E. Solovieva, T. Lueck, A. Bolz, Somnath Choudhury, T. Hara, H. Aihara, K. Lautenbach, A. Panta, M. Merola, J. G. Shiu, Y.-T. Chen, Samo Korpar, Claudia Cecchi, G. de Marino, A. Rostomyan, A. Paladino, M. C. Chang, S. Bussino, V.N. Zhilich, L. B. Rizzuto, Agnese Martini, F. Bianchi, Y. Ushiroda, N. Toutounji, Jürgen Becker, S. Yamada, R. Manfredi, Hitoshi Hirata, Y. Kato, D. Ferlewicz, H. Nakazawa, P. Branchini, S. Bettarini, Yu. V. Usov, W. Sutcliffe, J. H. Yin, B. G. Fulsom, Florian Urs Bernlochner, S. Nishida, G. Karyan, A. Di Canto, Jochen Dingfelder, K. Senyo, H. M. Wakeling, J. Wiechczynski, T. K. Pedlar, K. Uno, Andreas Warburton, C. Kiesling, W. B. Yan, D. A. Sanders, Phillip Urquijo, R. Godang, Ya-Qiu Jin, G. De Nardo, D. Tonelli, R. Mizuk, M. Sumihama, C. H. Chen, Z. Natkaniec, A. Vossen, S. K. Choi, L. K. Li, E. R. Oxford, K. Miyabayashi, S. Duell, R. Peschke, E. Paoloni, K. Nishimura, Frank Simon, Seongbae Yang, N. Taniguchi, C. Hearty, Y. Guan, Prafulla Kumar Behera, M. Destefanis, M. Hoek, Matthias Bauer, R. Cheaib, K. Kumara, S. Spataro, X. P. Xu, E. Prencipe, M. Rozanska, H. Hayashii, Z. S. Stottler, A. K. Giri, R. J. Sobie, D. Matvienko, L. Vitale, N. K. Nisar, H. K. Moon, J. Kumar, S.-H. Park, J. S. Lange, C. Hadjivasiliou, R. Karl, T. D. Kimmel, Stefano Longo, T. Pang, S. Patra, A. Sibidanov, K. Adamczyk, F. Dattola, L. Cao, A. Bobrov, D. Liventsev, F. R. Le Diberder, Yongsun Kim, B. Gobbo, K. Lalwani, P. Goldenzweig, N. Anh Ky, E. Graziani, E. De La Cruz-Burelo, H. E. Cho, C. Schwanda, F. Krinner, E. Torassa, Pere Rados, M. V. Purohit, R. A. Briere, I. Nakamura, K. Chilikin, D. E. Jaffe, T. Humair, P. Ecker, M. Hohmann, E. Waheed, V. Aushev, Tomoyuki Konno, D. Dossett, C. Lyu, S.-J. Cho, A. De Yta-Hernandez, J. A. McKenna, Y. Kim, V. Babu, T. Ferber, S. Kurz, V. Popov, S. Dey, A. Hershenhorn, G. Rizzo, S. Lacaprara, N. Akopov, Soumen Paul, Felix Metzner, B. Scavino, H. Atmacan, G. B. Mohanty, Alberto Aloisio, Y. Yusa, Yuki Sato, M. Laurenza, V. Savinov, S. Bacher, K. Dort, H. Park, A. Bozek, K. Gudkova, Alessandro Gaz, S. H. Robertson, X. L. Wang, V. Chekelian, S. Hazra, R. Van Tonder, and H. Bae
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, law, 0103 physical sciences, General Physics and Astronomy, Resonance, 010306 general physics, Collider, 01 natural sciences, law.invention, Luminosity
Abstract: We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72 fb^{-1}. The results, τ(D^{0})=410.5±1.1(stat)±0.8(syst) fs and τ(D^{+})=1030.4±4.7(stat)±3.1(syst) fs, are the most precise to date and are consistent with previous determinations.
Published: 2021

2. Search for B+→K+νν¯ Decays Using an Inclusive Tagging Method at Belle II

Author: T. Pang, S. Patra, A. Pathak, K. Adamczyk, G.V. Russo, J. Libby, D. M. Asner, T. Matsuda, Enrico Bernieri, K. Hayasaka, T. V. Dong, Tomoyuki Konno, E. Kovalenko, L. Zani, S. Fiore, F. R. Le Diberder, C. Lyu, A. Vinokurova, S. Dubey, I. Heredia-De La Cruz, P. Grace, J. Baudot, C. H. Li, I. M. Peruzzi, S.-J. Cho, Y. Seino, A. De Yta-Hernandez, O. Hartbrich, Y. Ushiroda, C. Niebuhr, X. Y. Zhou, B. Wach, H. Windel, E. Graziani, E. De La Cruz-Burelo, M. T. Prim, D. Liventsev, P. Krokovny, Rakesh Kumar, C. La Licata, B.A. Shwartz, Takeo Kawasaki, F. Bianchi, H. M. Wakeling, L. E. Piilonen, I. Domínguez Jiménez, Hitoshi Hirata, K. H. Kang, K. Cho, P. Oskin, Agnese Martini, S. Sandilya, A. Kuzmin, M. Welsch, R. Mizuk, E. Ganiev, P. Taras, D. Biswas, A. B. Kaliyar, T. Iijima, C. W. Joo, A. Sangal, T. M. G. Kraetzschmar, S. Stefkova, M. Starič, M. Z. Wang, Andrey Sokolov, Nils Braun, K. Matsuoka, T. Kuhr, Y.-T. Lai, S. Ogawa, D. Cinabro, R. Giordano, A. Baur, H. Ye, J. Schueler, M. E. Sevior, Claudia Cecchi, A. Panta, M. Merola, W. Gradl, P. L. M. Podesta-Lerma, Antonio Budano, K. Chilikin, N. Akopov, G. Inguglia, G. Nazaryan, T. Kunigo, C. Ketter, P. Goldenzweig, A. Gaz, A. Korobov, P. Chang, M. Kumar, M. De Nuccio, K. Nishimura, Frank Simon, R. M. Seddon, D. E. Jaffe, Abner Soffer, N. Anh Ky, H. Ozaki, V. Babu, K. Senyo, S. H. Robertson, S. Nishida, C. H. Chen, S. E. Vahsen, A. J. Schwartz, Kazuhiko Hara, A. Frey, D. Epifanov, Marco Milesi, M. Hernandez Villanueva, G. Finocchiaro, Dipak Kumar Sahoo, P. Bambade, K. Tanida, Y. M. Yook, J. Serrano, T. Ferber, S. Cunliffe, X. L. Wang, Yizeng Li, A. Di Canto, S. Bussino, Sunil Bansal, J. Bennett, Andreas Warburton, Y. Iwasaki, F. Abudinén, Y. J. Kwon, Somnath Choudhury, Tagir Aushev, S. Kurz, Semen Eidelman, S. Pardi, S. Spataro, T. Humair, K. Nakamura, V. Zhukova, Y. Onuki, Makoto Tabata, V. Chekelian, D. Rodríguez Pérez, G. De Nardo, S. Y. Suzuki, S. Hazra, T. K. Pedlar, N. Taniguchi, M. Takizawa, J. G. Shiu, R. Mussa, Jakub Kandra, M. Campajola, N. Rout, X. P. Xu, B. Paschen, Paul Jackson, Y.-T. Chen, Soumen Paul, M. Uchida, Felix Metzner, A. Gellrich, S. Raiz, H. Svidras, A. Garmash, C. Hadjivasiliou, Daniel Greenwald, John Yelton, L. K. Li, R. Van Tonder, M. Hohmann, A. Lozar, Z. Doležal, A. Natochii, A. Ishikawa, K. Inami, N. Toutounji, N. Rad, R. Pestotnik, E. Paoloni, M. Nakao, Stefano Longo, F. Tenchini, I. Ripp-Baudot, F. Meier, P. Križan, M. Remnev, H. Miyake, C.-L. Hsu, L. Cao, B. Scavino, D. A. Sanders, D. Matvienko, J. Wiechczynski, Seongbae Yang, H. Tanigawa, T. Podobnik, B. Spruck, K. Dort, B. Golob, Melissa K. Takahashi, S. Prell, S. Bettarini, Bruce Yabsley, Shih-Chang Lee, S. Duell, C. Miller, C. Hearty, E. Prencipe, Q. Y. Liu, P. Ahlburg, Martin Ritter, Dmytro Levit, M. Maggiora, Phillip Urquijo, N. K. Nisar, K. Lieret, K. Trabelsi, C. H. Kim, Z. Liptak, E. C. Hill, H. Park, S. X. Li, A. Bozek, W. A. T. Wan Abdullah, H. G. Moser, H. Atmacan, D. J. Summers, J. S. Lange, K. Uno, T. Koga, A. Selce, A. Passeri, M. Piccolo, Peter Kodys, R. Karl, T. D. Kimmel, E. Waheed, V.N. Zhilich, V. Aushev, Carlos Marinas, W. W. Jacobs, M. Bertemes, D. Ferlewicz, H. Hayashii, W. Sutcliffe, Elisa Manoni, R. J. Sobie, John Webb, L. Vitale, K. Chirapatpimol, M. Eliachevitch, J. Kumar, S.-H. Park, Yuki Sato, V. Popov, C. Z. Yuan, L. Santelj, S. Dey, K. Miyabayashi, Y. Guan, A. Paladino, R. Manfredi, E. Solovieva, T. Lueck, A. Sibidanov, A. Glazov, M. Laurenza, L. B. Rizzuto, G. de Marino, G. S. Varner, A. Hershenhorn, J. H. Yin, R. Cheaib, P. Branchini, G. Karyan, K. Kumara, Florian Urs Bernlochner, K. Gudkova, S. Lacaprara, V. Savinov, C. Kiesling, R. de Sangro, Z. S. Stottler, G. B. Mohanty, Alberto Aloisio, F. Krinner, A. K. Giri, Y. Yusa, S. Marcello, S. Baehr, G. Rizzo, M. Bračko, M. Destefanis, R. Itoh, K. Yoshihara, Concettina Sfienti, M. Masuda, G. Dujany, M. Iwasaki, F. Dattola, Sw. Banerjee, Satoshi Tanaka, E. Torassa, B. G. Cheon, L. M. Cremaldi, C. Murphy, C. Wessel, N. Gabyshev, D. Červenkov, A. Rostomyan, S. Korpar, F. Forti, M. Mrvar, B. G. Fulsom, R. Godang, S. Watanuki, Prafulla Kumar Behera, K. Sumisawa, S. Kohani, L. Corona, J. Irakkathil Jabbar, M. Garcia-Hernandez, G. Pakhlova, A. Fodor, H. Kichimi, Kevin Varvell, E. Bertholet, Takeo Higuchi, H. Aihara, F. Müller, Y. Usov, K. Lautenbach, Pere Rados, G. De Pietro, J. M. Roney, V. Gaur, M. Sumihama, C. Praz, M. Nayak, Ya-Qiu Jin, D. Tonelli, M. Hoek, Yongsun Kim, B. Gobbo, S. Uno, C. Schwanda, H. Ono, P. Leitl, R. Stroili, Y. Unno, D. Y. Kim, Q. D. Zhou, Iki Adachi, G. Polat, T. Fillinger, S. Pokharel, F. Di Capua, Y. Onishchuk, P. Pakhlov, P. Lewis, G. Casarosa, T. Czank, Jürgen Becker, S. Yamada, Jochen Dingfelder, W. B. Yan, Z. Natkaniec, U. Tamponi, M. Bessner, Surajit Maity, L. Lanceri, H. Junkerkalefeld, S. Halder, T. Bilka, and T. E. Browder
Subjects: Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, Resonance, 01 natural sciences, law.invention, Pair production, law, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics, Collider, Energy (signal processing)
Abstract: A search for the flavor-changing neutral-current decay B^{+}→K^{+}νν[over ¯] is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider. The data sample corresponds to an integrated luminosity of 63 fb^{-1} collected at the ϒ(4S) resonance and a sample of 9 fb^{-1} collected at an energy 60 MeV below the resonance. Because the measurable decay signature involves only a single charged kaon, a novel measurement approach is used that exploits not only the properties of the B^{+}→K^{+}νν[over ¯] decay, but also the inclusive properties of the other B meson in the ϒ(4S)→BB[over ¯] event, to suppress the background from other B meson decays and light-quark pair production. This inclusive tagging approach offers a higher signal efficiency compared to previous searches. No significant signal is observed. An upper limit on the branching fraction of B^{+}→K^{+}νν[over ¯] of 4.1×10^{-5} is set at the 90% confidence level.
Published: 2021

3. Operational Experience and Performance of the Belle II Pixel Detector

Author: V. Babu, P. Gomis, E. Tafelmayer, S. Stefkova, A. Frey, Ivan Peric, K. Gadow, Michael Ritzert, P. Leitl, K. Ackermann, C. Niebuhr, Melissa K. Takahashi, U. Gebauer, Jelena Ninkovic, P. Ahlburg, H. Windel, G. Giakoustidis, F. Müller, B. Paschen, H. G. Moser, F. Mueller, S. Skambraks, Angel Dieguez, V. Chekelian, C. Koffmane, Jochen Dingfelder, Florian Schopper, Tomasz Hemperek, Marcel Vos, S. Reiter, Gerhard Liemann, I. Konorov, A. Rabusov, R. Ayad, D. Klose, S. Krivokuca, Y. Soloviev, T. Kuhr, AL Virto, Thomas Lück, Ivan Vila, Benjamin Schwenker, H. Ye, M. Albalawi, Peter Kvasnicka, Martin Ritter, Dmytro Levit, J. Zhao, Concettina Sfienti, Jakub Kandra, P. Wieduwilt, B. Deschamps, Oscar Alonso, Gerhard Schaller, R. Sedlmeyer, Frank Simon, Hans Krüger, M. Gabriel, Thomas Gessler, S. Vogt, S. Huber, C. Kiesling, C. Wessel, D. Kittlinger, M. Fras, Q. Y. Liu, Z. Doležal, B. Spruck, C. Praz, U. Leis, Peter Kodys, M. Heck, P. Kapusta, J. Sanchez, A. Bozek, M. Hensel, R. Richter, Carlos Marinas, R. Stever, C. Camien, L. Macharski, M. Schnecke, S. Mccarney, A. Glazov, M. Hoek, H. Schreeck, F. Abudinen, T. Bilka, F. Poblotzki, K. Lautenbach, J. S. Lange, Ladislav Andricek, Norbert Wermes, Daniel Greenwald, C. H. Wang, L. Gioi, U. Stolzenberg, Allen Caldwell, B. Kisielewski, F. Lütticke, Zhiyong Liu, Soumen Paul, D. Moya, and B. Scavino
Subjects: 010308 nuclear & particles physics, Computer science, business.industry, 0103 physical sciences, ddc:530, Computer vision, Artificial intelligence, 010306 general physics, business, 01 natural sciences, Pixel detector
Abstract: Proceedings of the 29th International Workshop on Vertex Detectors (VERTEX2020), Tsukuba, Japan (Online); Journal of the Physical Society of Japan 34, 010002 (2021). doi:10.7566/JPSCP.34.010002, The Belle II experiment at the super KEK B factory (SuperKEKB) started its physics operation with the full detector setup in March 2019, and it aims at collecting 50 ab$^{��1}$ of $e^+e^��$ collision data. The vertex detector (VXD) of Belle II contains a 4-layer silicon vertex detector (SVD) using double sided silicon strips and an inner 2-layer pixel detector (PXD) that is based on the depleted P-channel Field Effect Transistor (DEPFET) technology. The signal generation and amplification are combined in pixels with a minimum pitch of 55 �� 50 ��m$^2$. The sensors are thinned down to 75 ��m, and each module has interconnects and ASICs integrated on the sensor with silicon frames for mechanical support. This approach led to a material budget of around 0.21% X$_0$ per layer including the cooling structure in the acceptance region. The PXD has an integration time of around 20 ��s, a signal-to-noise ratio of around 50 and a detecting efficiency of better than 99%. Its two layers are arranged at the radii of 14 and 22 mm around the interaction point, and an impact parameter resolution of better than 15 ��m has been achieved. Due to its close proximity to the beam line and its sensitivity to few-keV photons, the PXD also plays an important role in background studies., Published by The Physical Society of Japan, Tokyo
Published: 2021

4. The Belle II vertex detector integration

Author: H. Windel, V. Babu, S. Skambraks, P. Mammini, Ti. Baroncelli, M. Kaleta, C. Koffmane, M. Hensel, G. Batignani, J. Stypula, Prafulla Kumar Behera, V. Chekelian, C. La Licata, C. Wessel, H. Aihara, D. Münchow, F. Müller, M. Heck, J. Sanchez, F. Abudinen, AL Virto, F. Mueller, Oscar Alonso, R. Thalmeier, D. Klose, I. J. Watson, Soumen Paul, U. Packheiser, M. Ceccanti, N. Sato, Dipak Kumar Sahoo, D. Moya, B. Scavino, M. Fras, K. K. Rao, Takeo Higuchi, R. Richter, M. Albalawi, K. Nakamura, T. Kohriki, L. Zani, S. N. Mayekar, Svd Collaborations, Jakub Kandra, K. Prasanth, L. Macharski, S. Bacher, T. Morii, S. Bettarini, Jelena Ninkovic, Michael Ritzert, L. Bosisio, Jochen Dingfelder, Florian Schopper, Markus Friedl, D. Esperante, Ladislav Andricek, C. Kiesling, M. Boronat, H. Park, A. Bozek, Satoshi Tanaka, Tariq Aziz, Concettina Sfienti, C. W. Joo, R. Ayad, Seema Bahinipati, F. Lütticke, M. De Nuccio, U. Gebauer, Benjamin Schwenker, Zhiyong Liu, Steven Williams, Z. Natkaniec, Norbert Wermes, Carlos Marinas, B. Bhuyan, C. Schwanda, Shih-Chang Lee, T. Kuhr, G. Rizzo, W. Ostrowicz, S. Krivokuca, Frank Simon, B. Paschen, Maiko Takahashi, S. Vogt, H. G. Moser, R. Stever, Angel Dieguez, L. Gioi, F. Buchsteiner, Gerhard Schaller, H. Tanigawa, M. Gabriel, M. Hoek, A. Paladino, Rakesh Kumar, Gerhard Liemann, D. Getzkow, Peter Kvasnicka, B. Spruck, J.A.M. Grimaldo, Y. Onuki, K. H. Kang, T. Lueck, F. Poblotzki, S. Mccarney, P. K. Resmi, S. Schultschik, B. Gobbo, K. Lalwani, S. Rummel, D. Kittlinger, Ivan Peric, K. Gadow, Allen Caldwell, Martin Ritter, Dmytro Levit, Gagan Bihari Mohanty, To. Baroncelli, Keigo Hara, E. L. Barberio, F. Forti, L. Germic, U. Leis, A. Profeti, Tomasz Hemperek, S. Koike, B. Kisielewski, Marcel Vos, Peter Kodys, A. Bauer, P. Leitl, K. Ackermann, Ilya Komarov, Giulia Casarosa, H. Yin, Y. Soloviev, Jae-Young Lee, J. Fuster, Thomas Gessler, H. Schreeck, Phillip Urquijo, A. Martini, E. Paoloni, Carlos Lacasta, D. Červenkov, U. Stolzenberg, Pxd Belle Ii Depfet, L. Lanceri, I. Konorov, N. Dash, T. Czank, R. Blanco, G. N. Taylor, P. Wieduwilt, J. Suzuki, I. Rashevskaya, Hans Krüger, A. K. Basith, M. Rozanska, C. H. Wang, P. Kapusta, J. S. Lange, A. Rabusov, H. B. Jeon, Ivan Vila, A. Ishikawa, M. Schnecke, Filippo Bosi, T. Bilka, M. Watanabe, H. Ye, G. Caria, P. Gomis, E. Tafelmayer, M. Kumar, A. Frey, Jun Sasaki, J. Libby, K. Lautenbach, B. Deschamps, R. Sedlmeyer, Shoichi Watanuki, V. Bertacchi, Z. Doležal, S. Reiter, N. Kambara, Christian Irmler, C. Camien, T. Tsuboyama, J. Wiechczynski, Peter Fischer, W. Kun, P. Ahlburg, Wolfgang Kuhn, John Webb, L. Vitale, J. Zhao, Y. Bai, C. Niebuhr, European Commission, Ministerio de Economía y Competitividad (España), Ministry of Education, Culture, Sports, Science and Technology (Japan), Japan Society for the Promotion of Science, WPI Immunology Frontier Research Center (Japan), Federal Ministry of Science, Research and Economy (Austria), Australian Research Council, Ministry of Education, Youth and Sports (Czech Republic), Government of Czech Republic, Department of Science and Technology (India), Department of Atomic Energy (India), National Research Foundation of Korea, Ministry of Science and Higher Education (Poland), Federal Ministry of Science, Research and Economy (Germany), Kodyš, P., Abudinen, F., Ackermann, K., Ahlburg, P., Aihara, H., Albalawi, M., Alonso, O., Andricek, L., Ayad, R., Aziz, T., Babu, V., Bacher, S., Bahinipati, S., Bai, Y., Barberio, E., Baroncelli, Ti., Baroncelli, To., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bertacchi, V., Bettarini, S., Bhuyan, B., Bilka, T., Blanco, R., Bosi, F., Boronat, M., Bosisio, L., Bozek, A., Buchsteiner, F., Camien, C., Caldwell, A., Caria, G., Casarosa, G., Ceccanti, M., Červenkov, D., Chekelian, V., Czank, T., Dash, N., De Nuccio, M., Deschamps, B., Dieguez, A., Dingfelder, J., Doležal, Z., Esperante, D., Fischer, P., Forti, F., Fras, M., Frey, A., Friedl, M., Fuster, J., Gabriel, M., Gadow, K., Gebauer, U., Germic, L., Gessler, T., Getzkow, D., Gioi, L., Gobbo, B., Gomis, P., Grimaldo, J. A. M., Hara, K., Heck, M., Hemperek, T., Hensel, M., Higuchi, T., Hoek, M., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kaleta, M., Kandra, J., Kambara, N., Kang, K. H., Kapusta, P., Kiesling, C., Kisielewski, B., Kittlinger, D., Klose, D., Koffmane, C., Kohriki, T., Koike, S., Komarov, I., Konorov, I., Krivokuca, S., Krüger, H., Kuhr, T., Kühn, W., Kumar, M., Kumar, R., Kun, W., Kvasnička, P., La Licata, C., Lacasta, C., Lalwani, K., Lanceri, L., Lange, J. S., Lautenbach, K., Lee, J. Y., Lee, S. C., Leis, U., Leitl, P., Levit, D., Libby, J., Liemann, G., Liu, Z., Lueck, T., Lütticke, F., Macharski, L., Mammini, P., Mariñas, C., Martini, A., Mayekar, S. N., Mccarney, S., Mohanty, G. B., Morii, T., Moser, H. G., Moya, D., Mueller, F. J., Müller, F., Münchow, D., Nakamura, K. R., Natkaniec, Z., Niebuhr, C., Ninkovic, J., Onuki, Y., Ostrowicz, W., Packheiser, U., Paladino, A., Paoloni, E., Park, H., Paschen, B., Paul, S., Peric, I., Poblotzki, F., Prasanth, K., Profeti, A., Rabusov, A., Rashevskaya, I., Rao, K. K., Reiter, S. P., P. K., Resmi, Richter, R., Ritter, M., Ritzert, M., Rizzo, G., Rozanska, M., Rummel, S., Sahoo, D., Sanchez, J. G., Sasaki, J., Sato, N., Scavino, B., Schaller, G., Schnecke, M., Schopper, F., Schreeck, H., Schultschik, S., Schwanda, C., Schwenker, B., Sedlmeyer, R., Sfienti, C., Simon, F., Skambraks, S., Soloviev, Y., Spruck, B., Stever, R., Stolzenberg, U., Stypula, J., Suzuki, J., Tafelmayer, E., Takahashi, M., Tanaka, S., Tanigawa, H., Taylor, G. N., Thalmeier, R., Tsuboyama, T., Urquijo, P., Vila, I., Virto, A. L., Vitale, L., Vogt, S., Vos, M., Wang, C., Watanuki, S., Watanabe, M., Watson, I. J., Webb, J., Wermes, N., Wessel, C., Wiechczynski, J., Wieduwilt, P., Williams, S., Windel, H., Ye, H., Yin, H., Zani, L., and Zhao, J.
Subjects: Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Silicon sensor, Phase (waves), Computer Science::Computational Geometry, 7. Clean energy, 01 natural sciences, law.invention, Nuclear physics, Belle II, Data acquisition, Pixel detector, Strip detector, Vertex detector, Instrumentation, law, 0103 physical sciences, Collider, Nuclear and High Energy Physic, Physics, Interconnection, Pixel, 010308 nuclear & particles physics, Detector, data acquisition, pixel detector, silicon sensor, strip detector, vertex detector, Upgrade, High Energy Physics::Experiment, Focus (optics)
Abstract: Belle II DEPFET, PXD, and SVD Collaborations: et al., The Belle II experiment comes with a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric ee collider with energies tuned to ϒ(4S) resonance s=10.588 GeV. The accelerator has successfully completed the first phase of commissioning in 2016 and the first electron–positron collisions in Belle II took place in April 2018. Belle II features a newly designed silicon vertex detector based on DEPFET pixel and double-sided strip layers. Currently, a subset of the vertex detector is installed (Phase 2 of the experiment). Installation of the full detector (Phase 3) will be completed by the end of 2018. This paper describes the Phase 2 arrangement of the Belle II silicon vertex detector, with focus on the interconnection of detectors and their integration with the software framework of Belle II. Alignment issues are discussed based on detector simulations and first acquired data., This work is supported by MSCA-RISE, European Union project JENNIFER (EU grant n. 644294), MEXT, Japan, WPI, and JSPS (Japan); ARC (Australia); BMWFW (Austria); MSMT, Czech Republic, GAUK 404316 (Czech Republic); AIDA-2020 (Germany); DAE, India and DST (India); INFN (Italy); NRF-2016K1A3A7A09005605 and RSRI (Korea); MNiSW (Poland); Federal Ministry of Education and Research (BMBF, Germany); and MINECO, Spain grant FPA2015-71292-C2-1-P (Spain).
Published: 2019

5. 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

6. Commissioning and performance of the Belle II pixel detector

Author: Concettina Sfienti, F. Müller, Melissa K. Takahashi, R. Richter, S. Stefkova, A. Rabusov, S. Reiter, S. Mccarney, Benjamin Schwenker, D. Esperante, Ladislav Andricek, Allen Caldwell, Gerhard Schaller, Soumen Paul, M. Boronat, Michael Ritzert, D. Kittlinger, Q. Y. Liu, Ivan Vila, P. Leitl, K. Ackermann, D. Moya, I. Konorov, C. H. Wang, Norbert Wermes, Peter Kodys, B. Scavino, S. Krivokuca, Thomas Lück, P. Kapusta, B. Kisielewski, B. Deschamps, V. Babu, A. Frey, T. Kuhr, U. Gebauer, G. Giakoustidis, R. Sedlmeyer, Jelena Ninkovic, M. Schnecke, U. Leis, B. Spruck, J. Zhao, F. Lütticke, T. Bilka, Frank Simon, H. G. Moser, F. Mueller, V. Chekelian, K. Lautenbach, B. Paschen, Angel Dieguez, Oscar Alonso, P. Wieduwilt, Z. Doležal, J. Fuster, M. Fras, Zhiyong Liu, M. Heck, J. Sanchez, Gerhard Liemann, H. Ye, Thomas Gessler, Martin Ritter, Dmytro Levit, R. Ayad, P. Gomis, M. Hoek, P. Ahlburg, Belle-II Depfet, Peter Kvasnicka, Hans Krüger, C. Camien, F. Poblotzki, Carlos Marinas, E. Tafelmayer, S. Vogt, U. Stolzenberg, A. Bozek, Jochen Dingfelder, Florian Schopper, AL Virto, C. Koffmane, C. Niebuhr, H. Windel, F. Abudinen, Carlos Lacasta, D. Klose, M. Albalawi, Jakub Kandra, Daniel Greenwald, Y. Soloviev, L. Gioi, M. Hensel, J. S. Lange, L. Macharski, S. Skambraks, Ivan Peric, K. Gadow, M. Gabriel, Tomasz Hemperek, Marcel Vos, S. Huber, C. Kiesling, R. Stever, H. Schreeck, C. Wessel, Ministry of Education, Culture, Sports, Science and Technology (Japan), Japan Society for the Promotion of Science, European Commission, Federal Ministry of Education and Research (Germany), Ministerio de Economía y Competitividad (España), and World Premier International Research Center (Japan)
Subjects: Physics, Nuclear and High Energy Physics, Pixel, 010308 nuclear & particles physics, Physics beyond the Standard Model, 01 natural sciences, Noise (electronics), law.invention, Data set, Nuclear physics, Power consumption, law, 0103 physical sciences, Field-effect transistor, Collider, Instrumentation, Pixel detector
Abstract: Belle-II DEPFET and PXD Collaboration: et al., The Belle II experiment at the SuperKEKB energy-asymmetric e+ e- collider has completed a series of substantial upgrades and started collecting data in 2019. The experiment is expected to accumulate a data set of 50 ab−1 to explore new physics beyond the Standard Model at the intensity frontier. The pixel detector (PXD) of Belle II plays a key role in vertex determination. It has been developed using the DEpleted P-channel Field Effect Transistor (DEPFET) technology, which combines low power consumption in the active pixel area and low intrinsic noise with a very small material budget. In this paper, commissioning and performance of the PXD measured with first collision data are presented., This work is supported by MEXT, Japan, WPI, Japan, and JSPS (Japan); MSMT, GAUK 404316, MSCA-RISE project JENNIFER-2 (EU grant n. 822070) (Czech Republic); Federal Ministry of Education and Research (BMBF, Germany) and MINECO, Spain grant FPA2015-71292-C2-1-P (Spain).
Published: 2021

7. Particle Identification in Belle II Silicon Vertex Detector

Author: J. Libby, H. Aihara, Takeo Higuchi, T. Kohriki, Rakesh Kumar, K. H. Kang, Markus Friedl, Seema Bahinipati, J. Serrano, G. B. Mohanty, W. Ostrowicz, A. B. Kaliyar, S. Das, S. Hazra, Ya-Qiu Jin, Peter Kvasnicka, Y. Onuki, Yonghu Chen, E. Paoloni, Tariq Aziz, C. W. Joo, A. Paladino, F. Forti, I. Ripp-Baudot, S. Bacher, Shih-Chang Lee, H. B. Jeon, L. Corona, M. Kaleta, Y. Uematsu, G. Polat, J. Baudot, M. Kumar, A. Ishikawa, K. Nakamura, J. Suzuki, F. Buchsteiner, R. Thalmeier, Keigo Hara, B. Gobbo, K. Lalwani, T. Tsuboyama, Jakub Kandra, N. Rout, C. Schwanda, J. Wiechczynski, G. Rizzo, H. Park, A. Bozek, N. Dash, S. N. Mayekar, Satoshi Tanaka, Y. B. Li, G. Dujany, G. Batignani, S. Bettarini, K. Adamczyk, T. Morii, John Webb, H. Tanigawa, K. Wan, P. Kapusta, L. Vitale, H. Yin, C. La Licata, S. Halder, T. Bilka, Peter Kodys, Prafulla Kumar Behera, G. Casarosa, T. Czank, Z. Natkaniec, Christian Irmler, K. K. Rao, O. Verbycka, Dipak Kumar Sahoo, L. Zani, E. Ganiev, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Silicon, vertex detector, measurement methods, BELLE, dE/dx\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$${dE\!/\!dx}$$\end{document}, 01 natural sciences, 7. Clean energy, Particle identification, Silicon vertex detector, charged particle: energy loss, Nuclear physics, particle identification: performance, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, 010306 general physics, Physics, 010308 nuclear & particles physics, PID, Upsilon(10570), +D0+pi%2B%22">D*(2010)+ --> D0 pi+, semiconductor detector: microstrip, High Energy Physics::Experiment, +K-+pi%2B%22">D0 --> K- pi+, numerical calculations: Monte Carlo, +p+pi%22">Lambda --> p pi
Abstract: International audience; We report a particle identification (PID) tool developed using energy-loss information in the silicon-strip vertex detector (SVD) of Belle II for charged pions, kaons, and protons using $D^{* + } \to D^{0}[ \to K^{ - }\pi ^{ + }]\pi ^{ + }$ and $\Lambda \to p\pi ^{ - }$ decay samples. The study is based on e^+e^− collision data recorded at the $\Upsilon (4S)$ resonance by Belle II and the results are compared with that of a Monte Carlo sample. The introduction of additional information from the SVD is found to improve the overall PID performance in the low-momentum region.
Published: 2021

8. Search for Axionlike Particles Produced in e+e− Collisions at Belle II

Author: C. Rosenfeld, R. M. Seddon, S. H. Robertson, H. Ye, S. Kohani, Martin Florian Bessner, Shuji Tanaka, R. Mussa, H. M. Wakeling, J. Serrano, R. Rasheed, H. Svidras, A. Ishikawa, M. Nakao, R. Mizuk, J. Bennett, Kevin Varvell, F. Meggendorfer, M. Reif, L. Zani, D. M. Asner, K. Hayasaka, X. L. Wang, K. Kumara, Z. S. Stottler, V. Chekelian, D. Rodríguez Pérez, K. Chilikin, Richard Peschke, A. Pathak, S. E. Vahsen, D. Tonelli, C. H. Li, E. De La Cruz-Burelo, P. Križan, Ashlie Martini, I. M. Peruzzi, M. De Nuccio, R. Van Tonder, C. H. Kim, H. Aihara, D. Greenwald, F. Müller, C. MacQueen, M. Takizawa, Claudia Cecchi, G. De Nardo, M. T. Hedges, P. Pakhlov, D. Matvienko, B. Spruck, Seokhee Park, Samo Korpar, S. Nishida, A. Sibidanov, Yukinori Sato, Carlos Marinas, M. Hoek, E. J. Jang, F. Bianchi, L. Santelj, Tao Luo, K. Dort, Hitoshi Hirata, Yoshinobu Unno, F. Tenchini, N. Akopov, J. G. Shiu, S. H. Kim, Yongsun Kim, K. Tanida, A. Gaz, J. Baudot, Z. Doležal, A. J. Schwartz, T. Sumiyoshi, C. Kleinwort, C. Wessel, V. Babu, H. Park, H. Nakazawa, B. Gobbo, H. Ono, Florian Urs Bernlochner, C. Schwanda, L. J. Wu, C. Kiesling, Martin Ritter, Dmytro Levit, Elisa Manoni, S. Jia, D. E. Jaffe, A. K. Giri, Abner Soffer, S. Marcello, Soumen Paul, Makoto Tabata, Jakub Kandra, Phillip Urquijo, M. Uchida, K. Chirapatpimol, S. Reiter, S. Watanuki, W. B. Yan, G. De Pietro, E. C. Hill, Semen Eidelman, Felix Metzner, K. Lieret, H. Windel, N. Rout, M. Masuda, B. Scavino, V. Gaur, G. Rizzo, P. Oskin, V. Bhardwaj, M. Bračko, M. Destefanis, L. Li Gioi, Michael Ritzert, T. E. Browder, Marco Milesi, M. Piccolo, E. Ganiev, T. Ferber, A. Garmash, L. Corona, S. J. Cho, M. Campajola, Tagir Aushev, S. Kurz, S. Wehle, U. Gebauer, S. Halder, Y. Ushiroda, Rocky Bala Garg, C. W. Joo, A. Gellrich, S. Bussino, C. Z. Yuan, P. Leitl, F. Dattola, T. V. Dong, D. Liventsev, H. Hayashii, V. Savinov, Y. Maeda, H. Kichimi, M. Welsch, Concettina Sfienti, T. M. G. Kraetzschmar, E. Prencipe, M. Yonenaga, T. Bilka, G. Varner, W. Gradl, Ya-Qiu Jin, R. de Sangro, C. Niebuhr, R. Stroili, T. K. Pedlar, Y. Seino, S. Ogawa, B. G. Cheon, Z. J. Liptak, N. Rad, M. Watanabe, E. Torassa, H. Ozaki, Paul Jackson, Yang Li, M. Wakai, C. Hadjivasiliou, L. M. Cremaldi, L. K. Li, Q. D. Zhou, A. Sangal, A. Rostomyan, J. Wiechczynski, I. Ripp-Baudot, V. Popov, E. Waheed, M. V. Purohit, N. Dash, E. Solovieva, M. Hohmann, A. Selce, T. Kuhr, S. Sandilya, U. Tamponi, E. Paoloni, S. Cunliffe, C.-L. Hsu, Seongbae Yang, C. La Licata, R. Itoh, B. G. Fulsom, A. Hershenhorn, K. Cho, Seema Bahinipati, A. Fodor, S. Bilokin, M. C. Chang, Antonio Budano, D. A. Sanders, G. Dujany, S. Patra, Q. Y. Liu, C. Miller, Y. Sakai, H. G. Moser, M. Z. Wang, K. Kinoshita, A. Panta, Nils Braun, Y-J Kwon, M. Merola, T. Geßler, Pavel Krokovny, D. Dossett, O. Hartbrich, S. Lacaprara, Leo Piilonen, K. Trabelsi, A. Paladino, M. Starič, S. K. Choi, Enrico Bernieri, P. Lewis, S. C. Lee, P. Taras, S. Uno, A. Passeri, I. Komarov, Peter Kodys, W. W. Jacobs, H. Tanigawa, S. Pardi, T. Koga, Kodai Matsuoka, Sw. Banerjee, F. Forti, G. B. Mohanty, Alberto Aloisio, Y. Yusa, A. De Yta-Hernandez, M. Hernandez Villanueva, Y. Kato, D. Ferlewicz, Doo Young Kim, I. Adachi, G. Polat, G. Casarosa, M. Mrvar, M. Bertemes, T. Uglov, M. E. Sevior, I. S. Lee, P. Goldenzweig, S. Fiore, Victoria Zhukova, M. H. A. Nouxman, L. Lanceri, W. Sutcliffe, R. Cheaib, Frank Simon, Yi Fan Hu, A. Vinokurova, R. Manfredi, I. Heredia-De La Cruz, G. Inguglia, N. Anh Ky, P. Branchini, C. H. Wang, E. Graziani, C. Hearty, G. Karyan, P. Gomis, J. F. Strube, D. Červenkov, Sunil Bansal, K. Senyo, D. Biswas, Rakesh Kumar, K. Miyabayashi, D. J. Summers, A. B. Kaliyar, S. Spataro, R. J. Sobie, John Webb, X. P. Xu, L. Vitale, E. Won, Takuya Higuchi, V. Aushev, M. T. Prim, S. Baehr, H. J. Kim, Stefano Longo, Dipak Kumar Sahoo, P. Bambade, Andreas Warburton, F. Meier, Bruce Yabsley, M. Remnev, K. Azmi, F. Abudinén, B. Golob, N. K. Nisar, J. S. Lange, T. D. Kimmel, S. Stefkova, D. Cinabro, R. Giordano, Jürgen Becker, P. Chang, M. Kumar, B. Paschen, Kohei Ogawa, F. Di Capua, A. Natochii, K. Inami, K. Unger, S. Bettarini, J. Libby, I. Nakamura, J. M. Roney, F. Ameli, M. Sumihama, C. Praz, R. Godang, Prafulla Kumar Behera, J. Irakkathil Jabbar, H. E. Cho, and Pere Rados
Subjects: Physics, Range (particle radiation), Particle physics, Gauge boson, Luminosity (scattering theory), Photon, 010308 nuclear & particles physics, General Physics and Astronomy, 01 natural sciences, law.invention, Standard Model, Pseudoscalar, Direct production, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider
Abstract: We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e+e-→γa, a→γγ in the mass range 0.2
Published: 2020

9. A Study of Hit-time Reconstruction of Belle II Silicon Vertex Detector

Author: C. La Licata, L. Corona, G. Batignani, A. Paladino, W. Ostrowicz, K. K. Rao, O. Verbycka, B. Gobbo, K. Lalwani, C. Schwanda, Christian Irmler, M. Kumar, G. Casarosa, Y. B. Li, J. Serrano, Tariq Aziz, C. W. Joo, T. Czank, K. Nakamura, Jakub Kandra, T. Kohriki, N. Rout, G. Rizzo, S. Bacher, K. Wan, P. Kapusta, T. Tsuboyama, Rakesh Kumar, G. Dujany, H. B. Jeon, A. Ishikawa, S. Hazra, K. Adamczyk, S. Das, S. Halder, R. Thalmeier, L. Zani, H. Yin, K. H. Kang, J. Wiechczynski, F. Buchsteiner, T. Bilka, S. N. Mayekar, F. Forti, H. Park, A. Bozek, G. B. Mohanty, Z. Natkaniec, J. Baudot, J. Libby, M. Kaleta, A. B. Kaliyar, John Webb, L. Vitale, E. Ganiev, T. Morii, Yonghu Chen, Keigo Hara, E. Paoloni, N. Dash, H. Tanigawa, Satoshi Tanaka, Seema Bahinipati, Peter Kvasnicka, Peter Kodys, Y. Uematsu, G. Polat, J. Suzuki, Y. Onuki, H. Aihara, S. Bettarini, I. Ripp-Baudot, Shih-Chang Lee, Takeo Higuchi, Markus Friedl, Prafulla Kumar Behera, Ya-Qiu Jin, Dipak Kumar Sahoo, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, 010308 nuclear & particles physics, business.industry, data acquisition, track data analysis, vertex detector, measurement methods, BELLE, trigger, 01 natural sciences, Silicon vertex detector, Optics, 0103 physical sciences, semiconductor detector, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, business, numerical calculations: Monte Carlo, time resolution, performance
Abstract: International audience; For stable operation of the Belle II Silicon Vertex Detector in the future high-luminosity operation of SuperKEKB, we plan to reduce readout data-samples per trigger and to apply hit-selection using hit-time. To realize this plan, we developed novel hit-time estimation methods, one of which achieves the resolution of 2.28 ± 0.04 ns evaluated in the current data acquisition mode. A study using Monte Carlo simulation also confirms that the hit-selection based on this hit-time improves track reconstruction performance.
Published: 2020

10. The Belle II Silicon Vertex Detector: Performance and Operational Experience in the First Year of Data Taking

Author: G. Casarosa, T. Czank, C. La Licata, F. Buchsteiner, J. Libby, Dipak Kumar Sahoo, S. Bacher, M. Kaleta, Yonghu Chen, E. Paoloni, Z. Natkaniec, H. Park, A. Bozek, C. W. Joo, T. Kohriki, A. Paladino, Y. B. Li, Keigo Hara, S. Das, G. B. Mohanty, L. Zani, S. Hazra, N. Dash, Rakesh Kumar, K. H. Kang, W. Ostrowicz, K. Nakamura, Jakub Kandra, N. Rout, G. Rizzo, E. Ganiev, Tariq Aziz, J. Baudot, Christian Irmler, T. Tsuboyama, M. Kumar, J. Wiechczynski, K. Wan, P. Kapusta, J. Serrano, H. B. Jeon, A. Ishikawa, F. Forti, S. Halder, R. Thalmeier, John Webb, L. Vitale, K. K. Rao, T. Bilka, O. Verbycka, S. N. Mayekar, T. Morii, G. Dujany, A. B. Kaliyar, K. Adamczyk, H. Yin, H. Tanigawa, G. Batignani, L. Corona, Peter Kodys, Satoshi Tanaka, Y. Uematsu, G. Polat, J. Suzuki, Seema Bahinipati, Peter Kvasnicka, S. Bettarini, Prafulla Kumar Behera, H. Aihara, I. Ripp-Baudot, Shih-Chang Lee, Y. Onuki, Takeo Higuchi, Markus Friedl, Ya-Qiu Jin, B. Gobbo, K. Lalwani, C. Schwanda, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Particle physics, detector: performance, 010308 nuclear & particles physics, background, vertex detector, radiation: effect, BELLE, 01 natural sciences, Silicon vertex detector, semiconductor detector: pixel, 0103 physical sciences, semiconductor detector: microstrip, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, activity report
Abstract: International audience; In spring 2019 the Belle II experiment at the high-luminosity SuperKEKB e^+e^− collider (KEK, Japan) has resumed operation after the installation of the new vertex detector. In the first period of operation SuperKEKB has already reached the record luminosity of 2.4 × 10^34 cm^−2 s^−1 which will be increased by about a factor 30 in the coming years. Two inner layers of DEPFET-based pixels and four layers of double-sided silicon strip detectors (Silicon Vertex Detector, SVD) make up this new vertex detector, designed to meet the stringent physics requirements as well as to cope with the high beam background conditions. Since the beginning of data taking, the SVD has been functioning with a very reliable and stable operation and excellent detector performance. The first evidence of radiation effects in the SVD have been observed, which are at the expected level and not affecting performance. This paper will review the performance achieved by the SVD and the lessons learned in the first year of operation that continued even during the COVID-19 pandemic.
Published: 2020

11. The Belle II Silicon Vertex Detector: Performance and Running Experience

Author: M. Kaleta, G. Casarosa, Shih-Chang Lee, G. de Marino, H. Aihara, Peter Kodys, T. Zhang, K. Nakamura, Y. B. Li, Y. Onuki, S. Das, K. H. Kang, K. Hara, T. Morii, Tariq Aziz, Jakub Kandra, N. Rout, Prafulla Kumar Behera, G. Dujany, L. Corona, Peter Kvasnicka, A. B. Kaliyar, Seema Bahinipati, Rajesh Kumar, Markus Friedl, Mukesh Kumar, Z. Natkaniec, S. Bettarini, Yonghu Chen, E. Paoloni, Ya-Qiu Jin, G. Batignani, N. Dash, F. Forti, K. Adamczyk, H. Park, A. Bozek, Y. Uematsu, G. Rizzo, H. Yin, I. Ripp-Baudot, T. Czank, J. Suzuki, G. B. Mohanty, R. Thalmeier, B. Gobbo, K. Lalwani, C. Schwanda, Christian Irmler, C. Joo, L. Zani, S. N. Mayekar, Satoshi Tanaka, H. B. Jeon, F. Buchsteiner, A. Ishikawa, S. Bacher, J.A.M. Grimaldo, Doyen Sahoo, W. Ostrowicz, H. Tanigawa, C. La Licata, Surajit Maity, J. Baudot, D. Červenkov, T. Kohriki, T. Tsuboyama, S. Hazra, J. Wiechczynski, E. Ganiev, K. Wan, P. Kapusta, J. Libby, S. Halder, T. Bilka, J. C. Webb, L. Vitale, Z. Doležal, K. K. Rao, O. Verbycka, A. Paladino, T. Higuchi, 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), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Belle-II SVD, and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: noise, vertex detector, BELLE, Tracking (particle physics), 7. Clean energy, Noise (electronics), law.invention, Optics, semiconductor detector: pixel, law, Calibration, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Collider, Image resolution, spatial resolution, Physics, Luminosity (scattering theory), Pixel, business.industry, background, Detector, stability, calibration, efficiency, semiconductor detector: microstrip, business, performance
Abstract: International audience; In spring 2019 the fully equipped Belle II experiment started data taking at the energy of the Y(4S) resonance. The new vertex detector (VXD) consists of two inner layers of DEPFET pixels (PXD) and four outer layers of double-sided silicon strip detectors (SVD). It plays a crucial role in recording high-quality data in the new high-luminosity environment of the SuperKEKB collider, characterized by severe beam backgrounds. The SVD was operated reliably during the 2019 physics run, showing high stability of the noise levels and calibration parameters. The SVD performance, measured with first data, showed excellent hit and tracking efficiencies, high signal-to-noise ratio, and cluster energy distribution in fair agreement with the expectations. Detailed studies of the good spatial resolution achieved will be shown. The excellent hit-time resolution has also been measured, which will be exploited for background rejection in the coming years of running at higher luminosity.
Published: 2020

12. The Belle II diamond-detector for radiation monitoring and beam abort

Author: S. Bacher, A. B. Kaliyar, J. Libby, S. Bettarini, H. Park, A. Bozek, G. B. Mohanty, L. Zani, G. Casarosa, Markus Friedl, Satoshi Tanaka, D. Červenkov, Y. Uematsu, Shih-Chang Lee, K. Adamczyk, Tariq Aziz, Seema Bahinipati, G. Batignani, H. Yin, I. Ripp-Baudot, J. Suzuki, T. Czank, G. Rizzo, Peter Kodys, Mukesh Kumar, J. C. Webb, L. Vitale, Y. Onuki, Christian Irmler, Rajesh Kumar, Yonghu Chen, R. Thalmeier, E. Paoloni, T. Morii, Y. Jin, N. Dash, G. Dujany, B. Gobbo, K. Lalwani, C. Schwanda, G. de Marino, S. Hazra, F. Forti, S. N. Mayekar, M. Kaleta, Z. Natkaniec, C. La Licata, K. Hara, S. Das, A. Paladino, K. H. Kang, T. Higuchi, T. Zhang, Y. B. Li, Peter Kvasnicka, K. Nakamura, L. Corona, T. Tsuboyama, Jakub Kandra, N. Rout, J. Wiechczynski, Z. Doležal, H. B. Jeon, A. Ishikawa, F. Buchsteiner, J.A.M. Grimaldo, Doyen Sahoo, C. Joo, H. Aihara, K. Wan, P. Kapusta, S. Halder, T. Bilka, H. Tanigawa, W. Ostrowicz, Surajit Maity, T. Kohriki, J. Baudot, E. Ganiev, K. K. Rao, O. Verbycka, P. K. Behera, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Belle-II SVD, and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Luminosity (scattering theory), Diamond, BELLE, Radiation, engineering.material, law.invention, Nuclear physics, KEKB, law, engineering, electronics: readout, Radiation monitoring, radiation: monitoring, Electronics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Collider, solid-state counter: diamond, talk, Beam (structure), performance, detector: design, radiation: damage
Abstract: International audience; The SuperKEKB electron-positron collider at the KEK laboratory in Japan aims to achieve a maximum luminosity 50$\times$ higher than its predecessors KEKB and PEPII, positioning the Belle II experiment at the forefront of searches for non-standard-model physics in the next decade. High collision intensity implies high beam-induced radiation, which can damage essential Belle II sub-detectors and SuperKEKB components. Twenty-eight diamond sensors, read-out by purpose-built electronics, are installed in the interaction region to measure radiation and prevent damage. This talk introduces the system features and discusses its performance in early Belle II data taking.
Published: 2020

13. Search for an Invisibly Decaying Z′ Boson at Belle II in e+e−→μ+μ−(e±μ∓) Plus Missing Energy Final States

Author: I. Ripp-Baudot, F. Meggendorfer, V.N. Zhilich, D. Ferlewicz, E. Nakano, G.V. Russo, N. Akopov, S. Nishida, S. Longo, H. M. Wakeling, A. Pathak, M. De Nuccio, Rocky Bala Garg, L. Cao, Nataliia Kovalchuk, B. Spruck, T. J. Moon, T. Iijima, Soumen Paul, Dipak Kumar Sahoo, C. Kleinwort, K. Kumara, S. Fiore, W. B. Yan, Bumho Kim, C. W. Joo, K. Chilikin, Takeo Higuchi, Felix Metzner, Z. S. Stottler, P. Sartori, G. De Pietro, K. Miyabayashi, L. Zani, C. Wessel, N. K. Nisar, M. Bessner, C. Miller, C. Niebuhr, V. Babu, Abner Soffer, B. Scavino, E. Graziani, E. De La Cruz-Burelo, Elisa Manoni, Yang Chen, S. Reiter, R. Peschke, S. Sandilya, H. Windel, Carlos Marinas, M. Wakai, Marco Milesi, J. Baudot, C. Hadjivasiliou, Yoshinobu Unno, C. Hearty, T. Kuhr, H. G. Moser, I. Komarov, M. Bertemes, M. Nishimura, T. V. Dong, N. Taniguchi, J. H. Yin, U. Tamponi, Antonio Budano, Iki Adachi, Doo Young Kim, Agnese Martini, T. Ferber, A. K. Giri, Z. P. Zhang, V. Gaur, L. B. Rizzuto, T. Sumiyoshi, K. K. Joo, R. Godang, J. C. Mei, B. Paschen, S. Bussino, T. K. Pedlar, Soohyun Cho, S. Kurz, Tariq Aziz, Kohei Ogawa, K. Dort, S. Marcello, L. Corona, Prafulla Kumar Behera, Leo Piilonen, P. Taras, K. Azmi, Martin Ritter, Dmytro Levit, M. Masuda, B. Golob, L. Santelj, J. Gemmler, G. Casarosa, S. Wehle, M. Hernandez Villanueva, K. Inami, A. Vossen, G. Dujany, E. C. Hill, V. Aushev, J. S. Lange, A. Paladino, T. Czank, F. Dattola, T. D. Kimmel, S. Dey, D. Biswas, K. Nishimura, Frank Simon, S. E. Vahsen, A. B. Kaliyar, C. Rosenfeld, R. M. Seddon, A. Hershenhorn, A. Fodor, M. Remnev, A. Sangal, Vladimir Popov, J. Schueler, H. Park, A. Bozek, Kiyoshi Tanida, Sw. Banerjee, Felix Mueller, L. K. Li, M. Merola, S. Jia, Y. Iwasaki, Y. Sakai, E. Paoloni, L. Burmistrov, Pavel Krokovny, D. Dossett, P. K. Resmi, C.-L. Hsu, Y. J. Kwon, G. Finocchiaro, A. Panta, K. Lieret, S. Lacaprara, I. Domínguez Jiménez, R. Cheaib, Tagir Aushev, Seongbae Yang, J. Irakkathil Jabbar, Q. Y. Liu, S. Cunliffe, Makoto Tabata, Jakub Kandra, Andreas Warburton, Jürgen Becker, S. Yamada, E. Prencipe, Z. Doležal, N. Rout, V. Zhukova, Y. Onuki, Xiaopeng Zhou, A. De Yta-Hernandez, D. Červenkov, G. B. Mohanty, Alberto Aloisio, Y. Kato, G. Varner, J. F. Strube, M. C. Chang, M. Z. Wang, Peter Kodys, W. W. Jacobs, B. G. Fulsom, Y. Yusa, M. Nayak, B. Oberhof, T. Koga, A. Passeri, C. P. Shen, Y. Kim, P. Branchini, J. Bennett, M. Takizawa, T. Matsuda, K. Senyo, Enrico Bernieri, G. Karyan, L. Lanceri, S. K. Choi, S. Baehr, P. Gomis, Yi Fan Hu, Florian Urs Bernlochner, F. Di Capua, Shuji Tanaka, H. Aihara, E. Solovieva, G. Muroyama, S. Duell, I. M. Peruzzi, P. Oskin, M. Maggiora, Kevin Varvell, H. Atmacan, S. Y. Suzuki, K. Lautenbach, Pere Rados, G. Rizzo, M. Bračko, G. Pakhlova, Y.-T. Chen, M. Destefanis, M. Piccolo, W. Gradl, Y. Onishchuk, Y. Jin, C. H. Wang, D. Greenwald, A. Vinokurova, J. G. Shiu, S. Dubey, I. Heredia-De La Cruz, D. E. Jaffe, S. Bettarini, F. Müller, S. Spataro, O. Hartbrich, H. Ozaki, K. Cho, H. Miyake, K. Trabelsi, S. H. Kim, Y. Guan, K. Unger, P. Pakhlov, M. Eliachevitch, Rakesh Kumar, A. Kuzmin, V. Savinov, T. M. G. Kraetzschmar, F. Bianchi, C. Z. Yuan, M. Campajola, F. Tenchini, Th. Müller, A. Sibidanov, Yukinori Sato, E. Won, R. A. Briere, S. H. Robertson, R. Pestotnik, Kodai Matsuoka, M. Hoek, E. J. Jang, R. Rasheed, V. Chekelian, D. Rodríguez Pérez, K. Kim, H. Hayashii, H. Ono, R. Van Tonder, H. Ye, M. Barrett, R. Mizuk, L. Li Gioi, Y. B. Li, C. H. Kim, G. De Nardo, M. T. Hedges, Yongsun Kim, B. Gobbo, P. Leitl, Hidekazu Kakuno, Concettina Sfienti, S. Uno, R. Stroili, B. G. Cheon, C. Schwanda, L. M. Cremaldi, D. Cinabro, E. Torassa, Claudia Cecchi, M. V. Purohit, S. Korpar, S. C. Lee, T. Hara, F. Forti, T. Geßler, M. Garcia-Hernandez, E. Ganiev, S. Halder, J. M. Roney, M. Yonenaga, M. Sumihama, M. Watanabe, T. E. Browder, H. Kindo, C. Praz, P. Bambade, J. Libby, D. M. Asner, K. Hayasaka, M. T. Prim, Takeo Kawasaki, Andrey Sokolov, A. Gaz, James E. Fast, Semen Eidelman, J. Kahn, F. Meier, R. Mussa, H. B. Jeon, Bruce Yabsley, S. Stefkova, R. Giordano, G. Inguglia, A. Ishikawa, G. Nazaryan, Y. Seino, M. Kumar, M. Nakao, Somnath Choudhury, P. Križan, S. Kohani, Y. Ushiroda, M. Uchida, Tao Luo, A. Gellrich, Y. Maeda, T. Tsuboyama, D. Matvienko, Q. D. Zhou, J. Wiechczynski, C. La Licata, B.A. Shwartz, M. Starič, D. Liventsev, T. Morii, R. Kroeger, I. S. Lee, P. Goldenzweig, N. Anh Ky, R. de Sangro, Z. Liptak, P. Ahlburg, W. A. T. Wan Abdullah, D. J. Summers, R. Itoh, A. Rostomyan, R. J. Sobie, John Webb, L. Vitale, J. Kumar, D. Neverov, A. Selce, and Vikas Bansal
Subjects: Physics, Coupling constant, Particle physics, Missing energy, Physics beyond the Standard Model, General Physics and Astronomy, 01 natural sciences, law.invention, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, Boson
Abstract: Theories beyond the standard model often predict the existence of an additional neutral boson, the Z′. Using data collected by the Belle II experiment during 2018 at the SuperKEKB collider, we perform the first searches for the invisible decay of a Z′ in the process e+e-→μ+μ-Z′ and of a lepton-flavor-violating Z′ in e+e-→e±μZ′. We do not find any excess of events and set 90% credibility level upper limits on the cross sections of these processes. We translate the former, in the framework of an Lμ-Lτ theory, into upper limits on the Z′ coupling constant at the level of 5×10-2-1 for MZ′≤6 GeV/c2.
Published: 2020

14. Belle II pixel detector: Performance of final DEPFET modules

Author: B. Deschamps, R. Sedlmeyer, Z. Doležal, S. Mccarney, S. Reiter, F. Lütticke, Zhiyong Liu, U. Packheiser, T. Kuhr, K. Lautenbach, P. Leitl, K. Ackermann, S. Krivokuca, L. Macharski, Belle-II Depfet, V. Babu, S. Skambraks, R. Ayad, B. Spruck, Allen Caldwell, S. Vogt, Thomas Gessler, Oscar Alonso, C. H. Wang, Martin Ritter, Dmytro Levit, Jochen Dingfelder, Florian Schopper, B. Kisielewski, H. G. Moser, Ivan Peric, K. Gadow, M. Hensel, C. Niebuhr, U. Leis, Angel Dieguez, Tomasz Hemperek, Peter Kvasnicka, H. Ye, Carlos Lacasta, M. Fras, A. Bozek, Marcel Vos, Ivan Vila, P. Wieduwilt, U. Stolzenberg, J. Zhao, D. Getzkow, H. Schreeck, P. Kapusta, V. Chekelian, C. Camien, A. Rabusov, Y. Bai, P. Ahlburg, Hans Krüger, M. Schnecke, Wolfgang Kuhn, Soumen Paul, T. Bilka, Frank Simon, L. Gioi, D. Moya, B. Scavino, D. Esperante, Ladislav Andricek, A. Frey, J. Fuster, S. Huber, C. Kiesling, I. Konorov, R. Stever, P. Gomis, E. Tafelmayer, Concettina Sfienti, R. Blanco, Jelena Ninkovic, Gerhard Schaller, B. Paschen, L. Germic, F. Abudinen, Carlos Marinas, Michael Ritzert, U. Gebauer, C. Koffmane, F. J. Müller, Maiko Takahashi, M. Hoek, F. Poblotzki, C. Wessel, D. Münchow, F. Müller, Y. Soloviev, S. Rummel, D. Kittlinger, J. S. Lange, Peter Kodys, M. Heck, J. Sanchez, R. Richter, Gerhard Liemann, M. Boronat, Norbert Wermes, H. Windel, D. Klose, M. Albalawi, Jakub Kandra, AL Virto, M. Gabriel, Benjamin Schwenker, Ministry of Education, Culture, Sports, Science and Technology (Japan), Japan Society for the Promotion of Science, World Premier International Research Center (Japan), European Commission, Ministry of Education, Youth and Sports (Czech Republic), Federal Ministry of Education and Research (Germany), and Ministerio de Economía y Competitividad (España)
Subjects: Physics, Nuclear and High Energy Physics, Luminosity (scattering theory), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Resolution (electron density), Detector, 01 natural sciences, Optics, 0103 physical sciences, PXD, Belle II, High Energy Physics::Experiment, Field-effect transistor, Vertex detector, Impact parameter, 010306 general physics, business, Instrumentation, DEPFET, Pixel detector
Abstract: Belle-II DEPFET and PXD Collaboration: et al., A DEpleted P-channel Field Effect Transistor (DEPFET) based pixel detector was developed for the Belle II VerteX Detector (VXD). It is designed to achieve a good impact parameter resolution better than 15𝜇m at the very high luminosity conditions of this experiment. In the first half of 2018 four final production modules have been deployed in the commissioning run of the detector and their performance is discussed., This work is supported by MEXT, WPI, and JSPS (Japan); MSMT, GAUK 404316, MSCA-RISE project JENNIFER (EU grant n. 644294) (Czech Republic); Federal Ministry of Education and Research (BMBF, Germany) and MINECO grant FPA2015-71292-C2-1-P (Spain).
Published: 2020

15. Commissioning of the Belle II Silicon Vertex Detector

Author: S. Bettarini, J. Libby, K. Nakamura, C. La Licata, K. Wan, S. Halder, Filippo Bosi, Shoichi Watanuki, L. Lanceri, T. Bilka, M. Watanabe, I. J. Watson, H. B. Jeon, Jakub Kandra, C. W. Joo, S. Schultschik, P. K. Resmi, Rakesh Kumar, Prafulla Kumar Behera, L. Bosisio, A. Ishikawa, Dipak Kumar Sahoo, K. H. Kang, B. Bhuyan, G. Caria, T. Kohriki, K. Prasanth, L. Zani, Peter Kodys, R. Thalmeier, B. Gobbo, K. Lalwani, C. Schwanda, T. Lueck, A. Bauer, John Webb, A. Paladino, L. Vitale, S. N. Mayekar, Takeo Higuchi, H. Tanigawa, M. Kumar, T. Czank, Markus Friedl, S. Bacher, J. Suzuki, E. Paoloni, I. Rashevskaya, Y. Onuki, H. Park, A. Bozek, V. Bertacchi, G. N. Taylor, Ti. Baroncelli, Jun Sasaki, G. Casarosa, L. Corona, G. B. Mohanty, M. De Nuccio, G. Batignani, J. Stypula, P. Mammini, A. Martini, F. Forti, M. Kaleta, T. Tsuboyama, K. K. Rao, E. L. Barberio, Tariq Aziz, J. Wiechczynski, Steven Williams, F. Buchsteiner, M. Ceccanti, Shih-Chang Lee, N. Sato, H. Aihara, J.A.M. Grimaldo, Satoshi Tanaka, Jae-Young Lee, T. Morii, I. Komarov, Phillip Urquijo, Y. B. Li, H. Yin, Christian Irmler, Z. Doležal, Z. Natkaniec, N. Dash, A. K. Basith, M. Rozanska, To. Baroncelli, Keigo Hara, D. Červenkov, A. Profeti, G. Rizzo, Seema Bahinipati, Peter Kvasnicka, W. Ostrowicz, Casarosa, G., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Barberio, E., Baroncelli, T., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bertacchi, V., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, L., Bozek, A., Buchsteiner, F., Caria, G., Ceccanti, M., Cervenkov, D., Corona, L., Czank, T., Dash, N., De Nuccio, M., Dolezal, Z., Forti, F., Friedl, M., Gobbo, B., Grimaldo, J. A. M., Halder, S., Hara, K., Higuchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kaleta, M., Kandra, J., Kang, K. H., Kodys, P., Kohriki, T., Komarov, I., Kumar, M., Kumar, R., Kvasnicka, P., La Licata, C., Lalwani, K., Lanceri, L., Lee, J. Y., Lee, S. C., Li, Y., Libby, J., Lueck, T., Mammini, P., Martini, A., Mayekar, S. N., Mohanty, G. B., Morii, T., Nakamura, K. R., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Prasanth, K., Profeti, A., Rao, K. K., Rashevskaya, I., Resmi, P. K., Rizzo, G., Rozanska, M., Sahoo, D., Sasaki, J., Sato, N., Schultschik, S., Schwanda, C., Stypula, J., Suzuki, J., Tanaka, S., Tanigawa, H., Taylor, G. N., Thalmeier, R., Tsuboyama, T., Urquijo, P., Vitale, L., Wan, K., Watanabe, M., Watanuki, S., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., Yin, H., and Zani, L.
Subjects: Physics, Nuclear and High Energy Physics, COSMIC cancer database, Luminosity (scattering theory), Pixel, Silicon, 010308 nuclear & particles physics, Detector, chemistry.chemical_element, 01 natural sciences, Silicon vertex detector, law.invention, Nuclear physics, chemistry, law, 0103 physical sciences, Vertex detector, Commissioning, Strip detector, 010306 general physics, Collider, Instrumentation
Abstract: The Belle II experiment at the SuperKEKB collider of KEK (Japan) will accumulate 50 ab−1 of e+e- collision data at an unprecedented instantaneous luminosity of 8 ⋅ 1035 cm−2s−1, about 40 times larger than its predecessor. The Belle II vertex detector plays a crucial role in the rich Belle II physics program, especially for time-dependent measurements. It consists of two layers of DEPFET-based pixels and four layers of double sided silicon strip sensors (SVD detector). We report here results of the standalone commissioning of the SVD and highlights from the first cosmic runs acquired in Belle II. We also report on reconstruction performances of a reduced-scale version of the SVD operated during the accelerator commissioning in 2018.
Published: 2020

16. Run and slow control system of the Belle II silicon vertex detector

Author: Shih-Chang Lee, I. Komarov, Dipak Kumar Sahoo, L. Zani, Rakesh Kumar, N. Dash, P. K. Resmi, A. K. Basith, M. Rozanska, A. Paladino, K. H. Kang, Steven Williams, G. B. Mohanty, A. Bauer, Peter Kodys, H. Yin, Tariq Aziz, Y. Onuki, G. Batignani, J. Stypula, B. Bhuyan, Yang Li, P. Mammini, T. Czank, C. W. Joo, Prafulla Kumar Behera, To. Baroncelli, E. L. Barberio, E. Paoloni, Christian Irmler, G. N. Taylor, M. Kaleta, Keigo Hara, J. Suzuki, I. Rashevskaya, C. La Licata, K. Nakamura, T. Morii, Jakub Kandra, Jae-Young Lee, Satoshi Tanaka, S. Bettarini, Z. Natkaniec, I. J. Watson, Phillip Urquijo, R. Thalmeier, A. Martini, M. De Nuccio, L. Bosisio, Takeo Higuchi, Seema Bahinipati, T. Lueck, S. N. Mayekar, M. Ceccanti, G. Casarosa, T. Kohriki, F. Buchsteiner, K. Prasanth, N. Sato, Z. Doležal, Markus Friedl, S. Bacher, J.A.M. Grimaldo, Peter Kvasnicka, H. Park, A. Bozek, S. Schultschik, Ti. Baroncelli, F. Forti, B. Gobbo, K. Lalwani, C. Schwanda, H. Aihara, K. K. Rao, A. Profeti, G. Rizzo, H. Tanigawa, D. Červenkov, W. Ostrowicz, H. B. Jeon, A. Ishikawa, V. Bertacchi, L. Lanceri, T. Tsuboyama, G. Caria, K. Wan, J. Wiechczynski, Filippo Bosi, T. Bilka, M. Watanabe, John Webb, L. Vitale, M. Kumar, Jun Sasaki, J. Libby, Shoichi Watanuki, Irmler, C., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Barberio, E., Baroncelli, T., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bertacchi, V., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, L., Bozek, A., Buchsteiner, F., Caria, G., Casarosa, G., Ceccanti, M., Cervenkov, D., Czank, T., Dash, N., De Nuccio, M., Dolezal, Z., Forti, F., Friedl, M., Gobbo, B., Grimaldo, J. A. M., Hara, K., Higuchi, T., Ishikawa, A., Jeon, H. B., Joo, C., Kaleta, M., Kandra, J., Kang, K. H., Kodys, P., Kohriki, T., Komarov, I., Kumar, M., Kumar, R., Kvasnicka, P., La Licata, C., Lalwani, K., Lanceri, L., Lee, J. Y., Lee, S. C., Li, Y., Libby, J., Lueck, T., Mammini, P., Martini, A., Mayekar, S. N., Mohanty, G. B., Morii, T., Nakamura, K. R., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Prasanth, K., Profeti, A., Rao, K. K., Rashevskaya, I., Resmi, P. K., Rizzo, G., Rozanska, M., Sahoo, D., Sasaki, J., Sato, N., Schultschik, S., Schwanda, C., Stypula, J., Suzuki, J., Tanaka, S., Tanigawa, H., Taylor, G. N., Thalmeier, R., Tsuboyama, T., Urquijo, P., Vitale, L., Wan, K., Watanabe, M., Watanuki, S., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., Yin, H., and Zani, L.
Subjects: Physics, Nuclear and High Energy Physics, business.industry, Interface (computing), Industrial control system, computer.software_genre, Slow control, Silicon vertex detector, Belle II SVD, Data acquisition, Software, Run control, Control theory, Control system, Operating system, Factory (object-oriented programming), Belle II, EPICS, Interlock, business, Instrumentation, computer
Abstract: The Belle II Silicon Vertex Detector (SVD) was installed recently and has been prepared for physics run at SuperKEKB factory, Tsukuba, Japan. For a reliable operation and data taking of the SVD, a sophisticated and robust run and slow control system has been implemented, which utilizes the Experimental Physics and Industrial Control System (EPICS) framework. EPICS uses client/server and publish/subscribe techniques to communicate between the various sub-systems and computers. The information exchange between the different pieces of software and computers is done by process variables (PVs). These PVs are provided by input/output controllers (IOCs), which communicate and interface with the hardware components. The Belle II SVD slow and run control comprises five groups of subsystems, which are SVD DAQ controller, Flash ADC controller, environmental monitors and interlocks, power supplies and EPICS infrastructure services. In this paper we describe the tasks and the implementation of the individual sub-systems, the interaction between them and the global Belle II run and slow control as well as the first experience from commissioning and initial operation of the SuperKEKB accelerator.
Published: 2020

17. Beam background study for the Belle II Silicon Vertex Detector

Author: H. Aihara, S. Watanuki, T. Aziz, W. Ostrowicz, B. Gobbo, K. Lalwani, T. Lueck, G. Casarosa, T. Czank, Surajit Maity, H. B. Jeon, H. Park, L. Lanceri, H. Nakayama, F. Buchsteiner, T. Zhang, Takeo Higuchi, G. Dujany, Rajeev Kumar, L. Corona, Yonghu Chen, Markus Friedl, T. Tsuboyama, S. Hazra, S. E. Vahsen, Prafulla Kumar Behera, H. Tanigawa, J. Wiechczynski, A. B. Kaliyar, Y. Onuki, A. Bozek, Keigo Hara, L. Santelj, P. Kodyš, K. Nakamura, Z. Natkaniec, Y. Uematsu, J. Suzuki, N. Dash, Jakub Kandra, G. Batignani, N. Rout, J. A. Mora Grimaldo, Christoph Schwanda, Satoshi Tanaka, John Webb, Z. Doležal, L. Vitale, K. Wan, P. Kapusta, I. Ripp-Baudot, M. Kumar, F. Forti, K. K. Rao, O. Verbycka, C. La Licata, Shih-Chang Lee, J. Libby, S. Halder, T. Morii, T. Bilka, D. Červenkov, S. Bettarini, Christian Irmler, E. Ganiev, A. Ishikawa, A. Paladino, Peter Kvasnicka, M. Kaleta, R. Thalmeier, K. Adamczyk, H. Yin, E. Paoloni, N. Sato, G. B. Mohanty, S. N. Mayekar, K. H. Kang, G. de Marino, G. Rizzo, S. Das, J. Baudot, S. Bacher, T. Kohriki, C. W. Joo, Dipak Kumar Sahoo, L. Zani, Y. B. Li, S. Bahinipati, Tanigawa, H., Adamczyk, K., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Batignani, G., Baudot, J., Behera, P. K., Bettarini, S., Bilka, T., Bozek, A., Buchsteiner, F., Casarosa, G., Cervenkov, D., Chen, Y. Q., Corona, L., Czank, T., Das, S. B., Dash, N., de Marino, G., Dolezal, Z., Dujany, G., Forti, F., Friedl, M., Ganiev, E., Gobbo, B., Halder, S., Hara, K., Hazra, S., Higuchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kapusta, P., Kodys, P., Kohriki, T., Kumar, M., Kumar, R., Kvasnicka, P., Licata, C. L., Lalwani, K., Lanceri, L., Lee, S. C., Li, Y. B., Libby, J., Lueck, T., Maity, S., Mayekar, S. N., Mohanty, G. B., Grimaldo, J. A. M., Morii, T., Nakamura, K. R., Nakayama, H., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Rao, K. K., Ripp-Baudot, I., Rizzo, G., Rout, N., Sahoo, D., Santelj, L., Sato, N., Schwanda, C., Suzuki, J., Tanaka, S., Thalmeier, R., Tsuboyama, T., Uematsu, Y., Vahsen, S. E., Verbycka, O., Vitale, L., Wan, K., Watanuki, S., Webb, J., Wiechczynski, J., Yin, H., Zani, L., Zhang, T., 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 SVD
Subjects: Nuclear and High Energy Physics, Meson, Silicon, vertex detector, chemistry.chemical_element, BELLE, 7. Clean energy, 01 natural sciences, law.invention, Beam background, Nuclear physics, Belle II, Silicon vertex detector, law, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Collider, Instrumentation, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Scattering, Detector, beam: background, chemistry, semiconductor detector, Physics::Accelerator Physics, High Energy Physics::Experiment, performance, Energy (signal processing), Beam (structure)
Abstract: The Belle II experiment aims to accumulate 50 ab−1 of e + e − collision data at the SuperKEKB asymmetric energy collider (Tsukuba, Japan). The first physics data using all Belle II detectors were taken in spring 2019. In the vast physics program of the Belle II experiment, the vertex detector plays a crucial role for the determination of the B -meson decay vertices. It consists of two inner layers of pixelated silicon detectors and four outer layers of double-sided silicon strip detectors (SVD). To achieve a design luminosity of 8 × 1 0 35 cm − 2 s − 1 , 40 times higher than the recorded luminosity of its predecessor, the SuperKEKB collider squeezes the beams to a vertical size of 50 nm (“nano-beam scheme”) and doubles the beam currents. Therefore, the detectors are required to tolerate intense beam induced background due to the very high luminosity. During the 2019 spring run we measured the occupancy rate in the SVD to estimate the level of the beam induced background. With the low initial luminosity, the observed beam induced background mostly originated from Touschek processes and beam-gas scattering within individual beams. Since these different background contributions depend differently on accelerator conditions, such as the beam current, beam size and pressure, they can be disentangled. We estimate the background rate of each contribution and compare them with simulated ones. The results enable us to predict the background levels at increased beam currents and luminosity in the coming years. They also hint at background mitigation measures for running at higher luminosity. In this proceeding we present the results of our study of the beam induced background in the SVD and the prospects for future operation.
Published: 2020

18. Series production testing and commissioning of the Belle II SVD readout system

Author: A. Bauer, T. Lueck, G. Casarosa, E. Paoloni, D. Červenkov, Jae-Young Lee, C. La Licata, Phillip Urquijo, Dipak Kumar Sahoo, Steven Williams, L. Zani, Z. Natkaniec, Y. B. Li, I. J. Watson, K. Nakamura, Shih-Chang Lee, Christian Irmler, M. De Nuccio, C. W. Joo, V. Bertacchi, To. Baroncelli, Keigo Hara, Jakub Kandra, Tariq Aziz, S. Bacher, A. Paladino, Takeo Higuchi, L. Bosisio, H. Park, A. Bozek, Rakesh Kumar, F. Buchsteiner, I. Komarov, J. Suzuki, T. Tsuboyama, I. Rashevskaya, K. H. Kang, H. Tanigawa, J. Wiechczynski, Markus Friedl, A. Martini, T. Kohriki, J.A.M. Grimaldo, R. Thalmeier, J. Libby, F. Forti, G. Rizzo, K. Prasanth, K. K. Rao, John Webb, S. N. Mayekar, L. Vitale, T. Czank, S. Schultschik, B. Bhuyan, G. Caria, Ti. Baroncelli, W. Ostrowicz, G. N. Taylor, N. Dash, Shoichi Watanuki, A. K. Basith, M. Rozanska, B. Gobbo, K. Lalwani, H. Yin, Y. Onuki, C. Schwanda, Gagan Bihari Mohanty, M. Kumar, L. Lanceri, E. L. Barberio, A. Profeti, Seema Bahinipati, K. Wan, Jun Sasaki, Z. Doležal, Filippo Bosi, Peter Kvasnicka, T. Bilka, M. Watanabe, P. Mammini, T. Morii, M. Kaleta, M. Ceccanti, N. Sato, Satoshi Tanaka, P. K. Resmi, Peter Kodys, H. Aihara, G. Batignani, J. Stypula, S. Bettarini, H. B. Jeon, A. Ishikawa, Prafulla Kumar Behera, Thalmeier, R., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Barberio, E., Baroncelli, T., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bertacchi, V., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, L., Bozek, A., Buchsteiner, F., Caria, G., Casarosa, G., Ceccanti, M., Cervenkov, D., Czank, T., Dash, N., De Nuccio, M., Dolezal, Z., Forti, F., Friedl, M., Gobbo, B., Grimaldo, J. A. M., Hara, K., Higuchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kaleta, M., Kandra, J., Kang, K. H., Kodys, P., Kohriki, T., Komarov, I., Kumar, M., Kumar, R., Kvasnicka, P., La Licata, C., Lalwani, K., Lanceri, L., Lee, J. Y., Lee, S. C., Li, Y., Libby, J., Lueck, T., Mammini, P., Martini, A., Mayekar, S. N., Mohanty, G. B., Morii, T., Nakamura, K. R., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Prasanth, K., Profeti, A., Rao, K. K., Rashevskaya, I., Resmi, P. K., Rizzo, G., Rozanska, M., Sahoo, D., Sasaki, J., Sato, N., Schultschik, S., Schwanda, C., Stypula, J., Suzuki, J., Tanaka, S., Tanigawa, H., Taylor, G. N., Tsuboyama, T., Urquijo, P., Vitale, L., Wan, K., Watanabe, M., Watanuki, S., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., Yin, H., and Zani, L.
Subjects: Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Testing, STRIPS, computer.software_genre, 01 natural sciences, 030218 nuclear medicine & medical imaging, law.invention, 03 medical and health sciences, 0302 clinical medicine, Software, Sampling (signal processing), law, Belle II SVD readout hardware, Commissioning, 0103 physical sciences, 010306 general physics, Field-programmable gate array, Instrumentation, Physics, Firmware, business.industry, Bandwidth (signal processing), Detector, Noise (video), business, computer, Computer hardware
Abstract: This paper shows the hardware and the procedure utilized to test all components of the readout system (cables, FADC boards, junction boards) of the Belle II Silicon Vertex Detector after the series production. For the FADC board special testing hardware and firmware were designed and created to check all digital and analog inputs and outputs as well as all data interconnections on the board. The main FPGA on the FADC board generates digital signals which are converted to periodic analog differential alternating voltages up to 40 MHz on the FADC board tester, which then are fed into the analog inputs of the FADC board. Histograms and scans of the samples are recorded by using random equivalent-time sampling or sequential equivalent-time sampling, allowing to characterize the behavior of the system with a much higher bandwidth than the ADCs could do with conventional measurements. Small changes of parameters of the assembly (like using a cable of different length) lead to significant changes of the measured values, creating a sensitive testing instrument. The shapes of the distributions are analyzed and compared to references by software which then decides if a test is passed or not. The commissioning setup of the whole readout chain, with all the final components including the final detector, has been tested in three phases. The respective graphs of the signal-to-noise ratios of the strips of a detector module and histograms of the noise development of the whole detector show very high consistency of the SVD readout system.
Published: 2020

19. Alignment for the first precision measurements at Belle II

Author: Tadeas Bilka, Claus Kleinwort, Jakub Kandra, Makoto Uchida, Yinghui Guan, Kirill Chilikin, and David Dossett
Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Experiment
Abstract: On March 25th 2019, the Belle II detector recorded the first collisions delivered by the SuperKEKB accelerator. This marked the beginning of the physics run with vertex detector. The vertex detector was aligned initially with cosmic ray tracks without magnetic field simultaneously with the drift chamber. The alignment method is based on Millepede II and the General Broken Lines track model and includes also the muon system alignment and part of drift chamber calibrations. To control weak modes, we employ sensitive validation tools and various track samples can be used as alignment input, from straight cosmic tracks to mass-constrained decays. With increasing luminosity and experience, the alignment is approaching the target performance, crucial for the first physics analyses in the era of Super-B-Factories. We will present the software framework for the detector calibration and alignment, the results from the first physics run and the prospects in view of the experience with the first data.
Published: 2019
Full Text: View/download PDF

20. Data quality monitors of vertex detectors at the start of the Belle II experiment

Author: Oscar Alonso, Tomoyuki Kono, S. Bacher, M. Fras, S. Das, S. Skambraks, S. Watanuki, Zhen’An Liu, S. Reiter, S. Bettarini, Takeo Higuchi, U. Stolzenberg, T. Zhang, A. Paladino, Toru Tsuboyama, L. Corona, J. Baudot, S. Mccarney, Rainer Richter, Benjamin Schwenker, Concettina Sfienti, M. Hensel, Nils Braun, Boqun Wang, P. Kodyš, K. K. Rao, O. Verbycka, Lorenzo Vitale, Mikihiko Nakao, M. Heck, J. Sanchez, H. Windel, G. Batignani, Jesus Abudinen, Katsuro Nakamura, Michael Ritzert, K. Adamczyk, Eugenio Paoloni, Dipak Kumar Sahoo, K. Lautenbach, Daniel Greenwald, H. Yin, Y. Soloviev, I. Ripp-Baudot, C. Niebuhr, T. Czank, S. Y. Suzuki, U. Leis, Gerhard Liemann, C. W. Joo, M. Gabriel, S. Yamada, L. Zani, Jelena Ninkovic, Gaetano de Marino, Markus Friedl, Igor Konorov, L. Gioi, B. Deschamps, T. Kuhr, S. Krivokuca, Mohammed Albalawi, Gerhard Schaller, D. Klose, R. Sedlmeyer, Hua Ye, L. Macharski, B. Paschen, Y. B. Li, U. Gebauer, Stephan Paul, Allen Caldwell, Chiara La Licata, Chunhua Li, F. Buchsteiner, Oskar Hartbrich, Jakub Kandra, A. B. Kaliyar, Z. Doležal, N. Rout, Shuji Tanaka, Norbert Wermes, H. Aihara, Christian Irmler, C. Camien, Vladimir Chekelian, P. Leitl, K. Ackermann, Thomas Gessler, Souvik Maity, B. Spruck, R. Itoh, J.A.M. Grimaldo, D. Moya, S. Bahinipati, G. Dujany, Seokhee Park, R. Thalmeier, B. Kisielewski, Christian Koffmane, Jochen Dingfelder, Florian Schopper, F. Forti, Carlos Marinas, A. Ishikawa, E. Ganiev, B. Scavino, AL Virto, S. N. Mayekar, Pablo Gomis López, Maiko Takahashi, T. Kohriky, Y. Uematsu, Frank Simon, P. Wieduwilt, Z. Natkaniec, T. Aziz, M. Hoek, Daniel Esperante, D. Kittlinger, M. Kaleta, H. G. Moser, Angel Dieguez, Ladislav Andricek, Giulia Casarosa, R. Ayad, F. Poblotzki, L. Santelj, T. Morii, A. Bozek, H. Tanigawa, N. Sato, B. Gobbo, K. Lalwani, Jens Sören Lange, H. Schreeck, Qingyuan Liu, F. Müller, Martin Ritter, Dmytro Levit, K. H. Kang, N. Dash, Rajeev Kumar, D. Červenkov, Yeqi Chen, G. B. Mohanty, F. Luetticke, Hans Krüger, Peter Kvasnicˇka, A. Rabusov, C. Kiesling, C. Wessel, G. Rizzo, R. Stever, Y. Onuki, V. Babu, Yinghui Guan, Stefan M. Huber, G. Giakoustidis, Ivan Peric, K. Gadow, Koji Hara, James Webb, Marca Boronat, Tomasz Hemperek, Marcel Vos, Thomas Lück, Prafulla Kumar Behera, Seungcheol Lee, Juan Fuster, K. Wan, P. Kapusta, J. Wiechczynski, P. Ahlburg, M. Schnecke, S. Halder, T. Bilka, Christoph Schwanda, W. Ostrowicz, S. Stefkova, L. Lanceri, J. Libby, M. Kumar, A. Frey, S. Hazra, E. Tafelmayer, Felix Johannes Müller, H. B. Jeon, Ivan Vila, H. Park, S. Vogt, Carlos Lacasta, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Belle-II, PXD, SVD, DAQ, DQM, and software
Subjects: Physics::Instrumentation and Detectors, QC1-999, vertex detector, BELLE, quality: monitoring, 01 natural sciences, 7. Clean energy, programming, Silicon vertex detector, law.invention, Nuclear physics, semiconductor detector: pixel, law, 0103 physical sciences, Quality monitoring, [INFO]Computer Science [cs], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Collider, numerical calculations, detector: design, activity report, Physics, 010308 nuclear & particles physics, Detector, Upgrade, Full data, Data quality, Physics::Accelerator Physics, semiconductor detector: microstrip, High Energy Physics::Experiment, upgrade, Vertex detector, monitoring: on-line, performance
Abstract: The Belle II experiment features a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric e+e− collider at KEK in Tsukuba, Japan. The accelerator completed its first phase of commissioning in 2016, and the Belle II detector saw its first electron-positron collisions in April 2018. Belle II features a newly designed silicon vertex detector based on double-sided strip layers and DEPFET pixel layers. A subset of the vertex detector was operated in 2018 to determine background conditions (Phase 2 operation). The collaboration completed full detector installation in January 2019, and the experiment started full data taking. This paper will report on the final arrangement of the silicon vertex detector part of Belle II with a focus on online monitoring of detector conditions and data quality, on the design and use of diagnostic and reference plots, and on integration with the software framework of Belle II. Data quality monitoring plots will be discussed with a focus on simulation and acquired cosmic and collision data.
Published: 2019

21. The Belle II Physics Book

Author: C. Niebuhr, Ulrich Nierste, I. Heredia-De La Cruz, Mikihiko Nakao, Philip Bambade, Kristine M. Smith, Concettina Sfienti, S. Bilokin, M. Iwasaki, G. Tetlalmatzi-Xolocotzi, S. Sandilya, Andreas Crivellin, M. Uchida, Melissa K. Takahashi, L. K. Li, S. Bettarini, B. G. Cheon, M. Blanke, M. Starič, Yoshinobu Unno, L. M. Cremaldi, D. van Dyk, T. Kumita, Andrey Sokolov, V. Bhardwaj, Ikaros I.Y. Bigi, J. Tan, Shuji Tanaka, G. S. Varner, M. Arndt, R. A. Briere, I. Nakamura, M. Maggiora, R. Itoh, T. Geßler, K. Nishimura, Cai-Dian Lü, Kevin Varvell, Matthias Jamin, Gil Paz, D. Cinabro, Fady Bishara, R. Giordano, M. Lubej, J. Schueler, K. Belous, S. Korpar, W. Yuan, C. Joo, G. López Castro, A. Gaz, H. Kindo, X. Zhou, Andrzej J. Buras, Mikolaj Misiak, E. Solovieva, L. E. Piilonen, B. Gobbo, P. Chang, M. Kumar, A. Rostomyan, Takuya Higuchi, A. Frey, Michael Gronau, Ian Watson, Bruce Yabsley, E. Won, James E. Fast, K. Huang, A. Morda, F. Forti, M. Mrvar, M. Ciuchini, Agnese Martini, A. K. Giri, K. Sumisawa, D. Neverov, B. G. Fulsom, G. De Pietro, Y. Guan, G. Rizzo, M. Bračko, M. Destefanis, G. Bell, P. Taras, B. Bhuyan, L. Podesta Lerma, S. Marcello, S. Gribanov, S. Jahn, V. Gaur, Michael Ritzert, Antonio Pich, M. Schram, A. Sibidanov, Dipak Kumar Sahoo, L. Zani, S. E. Vahsen, R. Mussa, Z. Was, A. Vossen, Yukinori Sato, A. Zupanc, F. Meier, M. Künzel, J. V. Bennett, A. Garmash, H. Atmacan, Satoshi Mishima, Jelena Ninkovic, Mehmet Zeyrek, W. Sutcliffe, T. J. Moon, Soumen Paul, Q. Xu, Rocky Bala Garg, Henryk Czyz, Y.-T. Lai, R. Godang, Andreas Warburton, Hitoshi Yamamoto, W. Yan, J. G. Shiu, C. L. Hsu, H. B. Jeon, H. Aihara, D. Greenwald, C. Hearty, Thorsten Feldmann, M. Tanaka, H. Miyata, U. Gebauer, T. E. Browder, Prafulla Kumar Behera, T. Iijima, O. Seon, Frank Simon, Felix Metzner, M. Greco, F. Müller, S.I. Eidelman, A. Ishikawa, Y. Usov, P. Ahlburg, Stephen Godfrey, Y. Kiyo, Zoltan Ligeti, G. Muroyama, K. Kim, Svjetlana Fajfer, Stephen Lars Olsen, D. J. Summers, C. Wessel, S. Wehle, O. Frost, P. K. Resmi, Sumio Yamada, N. Dash, Nora Brambilla, U. Tippawan, B. Scavino, F. Di Capua, Phillip Urquijo, Felix Kahlhoefer, Y. Iwasaki, B. Paschen, S. Longo, H. Ono, Pablo Roig, R. Mizuk, W. Kuehn, F. J. Tackmann, S. Rummel, P. Križan, Joachim Brod, M. De Nuccio, Javier Virto, C. S. Park, S. Y. Suzuki, X. P. Xu, H. Miyake, T. Kuhr, I. Ripp-Baudot, C. MacQueen, R. Kowalewski, D. Shih, M. Hoek, Y. J. Kwon, S. Zakharov, J. Jones, W. W. Jacobs, E. Passemar, Kohei Ogawa, D. Nomura, V. Savinov, R. J. Sobie, John Webb, W. Gradl, D. Kotchetkov, M. V. Purohit, L. Vitale, W. S. Hou, D. J. Robinson, Y. B. Li, Massimo Berger, S. Hollitt, A. Sangal, Shih-Chang Lee, Shoji Hashimoto, S. Fiore, S. Di Carlo, K. Wan, P. Branchini, Yongsun Kim, A. Rabusov, A. De Yta Hernandez, Marcel Vos, Vittorio Lubicz, Samo Stanič, A. J. Schwartz, L. Cao, P. Leitl, S. Bilmis, J. Stypula, K. Lalwani, C. Schwanda, Ayan Paul, G. Tejeda Muñoz, Xuejun Wang, R. Sinha, M. Hernandez Villanueva, S. Uehara, Makoto Tabata, Jakub Kandra, N. Rout, Jakob Schwichtenberg, E. Graziani, S. Hirose, C. Miller, H. J. Kim, A. S. Kronfeld, K. Inami, Junko Shigemitsu, Kai Schmidt-Hoberg, A. Fodor, C. Z. Yuan, S. H. Robertson, J. M. Roney, D. Cuesta, Wolfgang Altmannshofer, D. Matvienko, R. Stroili, Megumi Naruki, Jernej F. Kamenik, F. Luetticke, J. H. Yin, H. Schreeck, Florian Bernlochner, S. X. Li, B.A. Shwartz, A. Passeri, E. Prencipe, M. Gabriel, I. Yeo, R. Rasheed, Noritaka Shimizu, T. V. Dong, K. Adamczyk, F. De Fazio, M. Nayak, F. Tenchini, M. Merola, Heather E. Logan, A. Nefediev, Qiang Li, Matthew T. Bender, Ihn Sik Seong, M. Remnev, B. Gao, I. M. Peruzzi, D. Getzkow, I. Domínguez Jiménez, B. Golob, T. Lueck, D. Liventsev, A. B. Kaliyar, G. Pakhlova, T. Sumiyoshi, Janusz Rosiek, Jia-ju Zhang, Luca Silvestrini, Antonio D. Polosa, Abhisek Datta, V. Chekelian, D. Rodríguez Pérez, Vladimir Zhulanov, Christoph Bobeth, H. K. Moon, B. Spruck, Y. Jin, R. Kroeger, K. Prasanth, J. Evans, Roman Zwicky, Y. Zhang, H. Nakazawa, I. Adachi, Xuyang Gao, J. S. Lange, Y. Ushiroda, M. E. Sevior, S. Westhoff, Victoria Zhukova, V. M. Braun, N. Gabyshev, D. Červenkov, G. B. Mohanty, C. Ketter, Martin Ritter, Thomas Teubner, Dmytro Levit, P. Goldenzweig, T. D. Kimmel, G. Casarosa, N. Taniguchi, M. Z. Wang, R. Van Tonder, E. De La Cruz Burelo, Alberto Aloisio, Antonio Vairo, Y. Ban, G. De Nardo, J. F. Krohn, N. Offen, N. Anh Ky, R. Kulasiri, Y. Kato, P. Pakhlov, Jure Zupan, J. F. Strube, M. Sumihama, K. Kinoshita, U. Tamponi, Nils Braun, Tao Luo, K. Tanida, P. Wieduwilt, J. B. Kim, Y. Yusa, N. T. Hong Van, Peter Stoffer, K. Senyo, R. Cheaib, Feng-Kun Guo, Tobias Huber, A. Tayduganov, T. Yoshinobu, E. Guido, L. Li Gioi, Vladimir Popov, G. Inguglia, M. Perelló, G. Russo, N. Nellikunnummel, H. Park, A. Bozek, M. Takizawa, M. Jung, S. Levonian, S. Skambraks, A. Korobov, Z. S. Stottler, I. Jaegle, Jae-Yong Lee, J. Pradler, K. Miyabayashi, S. Baehr, B. Moussallam, A. Gellrich, L. Burmistrov, S. Cunliffe, Y. Onuki, Yi Fan Hu, X. Ji, Y. Maeda, Hidekazu Kakuno, H. Kichimi, M. C. Chang, T. Morii, M. Salehi, Rakesh Kumar, H. Y. Cheng, Z. J. Liptak, Bingran Wang, M. Khasmidatul, F. Beaujean, Ezio Torassa, J. Wiechczynski, Tariq Aziz, V. Aushev, Stephen R. Sharpe, R. Ayad, Seema Bahinipati, Yang Li, U. Stolzenberg, T. Nakano, Massimiliano Procura, K. J. Nath, Kenneth Moats, A. Loos, M. Shapkin, L. Santelj, S. Dey, T. Tsuboyama, Y. Tao, S. Schacht, A. Hershenhorn, D. Y. Kim, K. Chilikin, T. Kaneko, Y. Sakai, Abner Soffer, O. Hartbrich, S. Lacaprara, D. Epifanov, M. Barrett, H. Hayashii, Sasa Prelovsek, R. Pestotnik, B. Pal, J. Baudot, S. Bussino, Farvah Mahmoudi, Giulia Ricciardi, T. K. Pedlar, J. A. McKenna, E. Paoloni, Seongbae Yang, Yi Chen, Maya Hachiya Shimomura, Enrico Bernieri, S. Uno, Ladislav Andricek, G. Bonvicini, O. Gogota, Yu. Onishchuk, A. Vinokurova, Tobias Hurth, P. Krokovny, K. H. Kang, K. Cho, Grzegorz Nowak, A. Kokulu, T. Aushev, T. Ferber, Paul Jackson, Tomoyuki Konno, Alexander L. Kagan, D. Dossett, I. Kadenko, K. Trabelsi, J. Kahn, C. P. Shen, T. Deppisch, K. T. Kim, Gilberto Colangelo, Marcella Bona, H. Nakayama, C. Hanhart, S. Jia, Y. Shimizu, D. A. Sanders, Surajit Maity, J. B. Singh, S. K. Choi, S. Duell, N. Starinsky, Yuval Grossman, M. H. A. Nouxman, Martin Hoferichter, Silvano Simula, Junji Hisano, Alexey A. Petrov, E. Ganiev, S. Halder, A. Kuzmin, F. Abudinen, M. Yonenaga, Kim Maltman, Thomas Hauth, Elisa Manoni, T. Bilka, S. Reiter, E. De Lucia, M. Gelb, Ulrich Haisch, L. B. Rizzuto, Th. Müller, E. Waheed, H. Ye, Ryoutaro Watanabe, B. Deschamps, Claudia Cecchi, K. Hara, G. Caria, David M. Straub, Caleb Smith, Carlos Marinas, Z. Doležal, Tara Nanut, T. Uglov, A. Guo, A. Glazov, Matthew J. Dolan, C. Rosenfeld, R. M. Seddon, Martin Florian Bessner, L. Hofer, Jun Sasaki, Somnath Choudhury, E. Kou, J. Libby, D. M. Asner, K. Hayasaka, Cheng-Wei Chiang, J. W. Choi, Y. Seino, D. Besson, M. T. Prim, Takeo Kawasaki, Martin Beneke, S. Nishida, M. I. Martínez Hernández, S. Jaeger, Jochen Dingfelder, Nejc Košnik, H. M. Wakeling, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Lyon (ENS Lyon), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Belle-II, Ministerio de Ciencia, Innovación y Universidades (España), 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 National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure de Lyon (ENS de Lyon), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Kou, E., Urquijo, P., Altmannshofer, W., Beaujean, F., Bell, G., Beneke, M., Bigi, I. I., Blanke, F. Bishara M., Bobeth, C., Bona, M., Brambilla, N., Braun, V. M., Brod, J., Buras, A. J., Cheng, H. Y., Chiang, C. W., Colangelo, G., Czyz, H., Datta, A., De Fazio, F., Deppisch, T., Dolan, M. J., Fajfer, S., Feldmann, T., Godfrey, S., Gronau, M., Grossman, Y., Guo, F. K., Haisch, U., Hanhart, C., Hashimoto, S., Hirose, S., Hisano, J., Hofer, L., Hoferichter, M., Hou, W. S., Huber, T., Jahn, S. Jaeger S., Jamin, M., Jones, J., Jung, M., Kagan, A. L., Kahlhoefer, F., Kamenik, J. F., Kaneko, T., Kiyo, Y., Kokulu, A., Kosnik, N., Kronfeld, A. S., Ligeti, Z., Logan, H., C. D., Lu, Lubicz, V., Mahmoudi, F., Maltman, K., Misiak, M., Mishima, S., Moats, K., Moussallam, B., Nefediev, A., Nierste, U., Nomura, D., Offen, N., Olsen, S. L., Passemar, E., Paul, A., Paz, G., Petrov, A. A., Pich, A., Polosa, A. D., Pradler, J., Prelovsek, S., Procura, M., Ricciardi, G., Robinson, D. J., Roig, P., Schacht, S., Schmidt-Hoberg, K., Schwichtenberg, J., Sharpe, S. R., Shigemitsu, J., Shimizu, N., Shimizu, Y., Silvestrini, L., Simula, S., Smith, C., Stoffer, P., Straub, D., Tackmann, F. J., Tanaka, M., Tayduganov, A., Tetlalmatzi-Xolocotzi, G., Teubner, T., Vairo, A., van Dyk, D., Virto, J., Was, Z., Watanabe, R., Watson, I., Zupan, J., Zwicky, R., Abudinen, F., Adachi, I., Adamczyk, K., Ahlburg, P., Aihara, H., Aloisio, A., Andricek, L., Anh Ky, N., Arndt, M., Asner, D. M., Atmacan, H., Aushev, T., Aushev, V., Ayad, R., Aziz, T., Baehr, S., Bahinipati, S., Bambade, P., Ban, Y., Barrett, M., Baudot, J., Behera, P., Belous, K., Bender, M., Bennett, J., Berger, M., Bernieri, E., Bernlochner, F. U., Bessner, M., Besson, D., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bilka, T., Bilmis, S., Bilokin, S., Bonvicini, G., Bozek, A., Bracko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Burmistrov, L., Bussino, S., Cao, L., Caria, G., Casarosa, G., Cecchi, C., Cervenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Chekelian, V., Chen, Y., Cheon, B. G., Chilikin, K., Cho, K., Choi, J., Choi, S. -K., Choudhury, S., Cinabro, D., Cremaldi, L. M., Cuesta, D., Cunliffe, S., Dash, N., de la Cruz Burelo, E., De Lucia, E., De Nardo, G., De Nuccio, M., De Pietro, G., De Yta Hernandez, A., Deschamps, B., Destefanis, M., Dey, S., Di Capua, F., Di Carlo, S., Dingfelder, J., Dolezal, Z., Dominguez Jimenez, I., Dong, T. V., Dossett, D., Duell, S., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fiore, S., Fodor, A., Forti, F., Frey, A., Frost, O., Fulsom, B. G., Gabriel, M., Gabyshev, N., Ganiev, E., Gao, X., Gao, B., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gessler, T., Gebauer, U., Gelb, M., Gellrich, A., Getzkow, D., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Gogota, O., Goldenzweig, P., Golob, B., Gradl, W., Graziani, E., Greco, M., Greenwald, D., Gribanov, S., Guan, Y., Guido, E., Guo, A., Halder, S., Hara, K., Hartbrich, O., Hauth, T., Hayasaka, K., Hayashii, H., Hearty, C., Heredia De La Cruz, I., Hernandez Villanueva, M., Hershenhorn, A., Higuchi, T., Hoek, M., Hollitt, S., Hong Van, N. T., Hsu, C. -L., Hu, Y., Huang, K., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, Y., Iwasaki, M., Jackson, P., Jacobs, W. W., Jaegle, I., Jeon, H. B., Ji, X., Jia, S., Jin, Y., Joo, C., Kuenzel, M., Kadenko, I., Kahn, J., Kakuno, H., Kaliyar, A. B., Kandra, J., Kang, K. H., Kawasaki, T., Ketter, C., Khasmidatul, M., Kichimi, H., Kim, J. B., Kim, K. T., Kim, H. J., Kim, D. Y., Kim, K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Konno, T., Korobov, A., Korpar, S., Kotchetkov, D., Kowalewski, R., Krizan, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kuehn, W., Kuhr, T., Kulasiri, R., Kumar, M., Kumar, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., Lalwani, K., Lange, J. S., Lee, S. C., Lee, J. Y., Leitl, P., Levit, D., Levonian, S., Li, S., L. K., Li, Li, Y., Y. B., Li, Li, Q., Li Gioi, L., Libby, J., Liptak, Z., Liventsev, D., Longo, S., Loos, A., Lopez Castro, G., Lubej, M., Lueck, T., Luetticke, F., Luo, T., Mueller, F., Mueller, Th., Macqueen, C., Maeda, Y., Maggiora, M., Maity, S., Manoni, E., Marcello, S., Marinas, C., Martinez Hernandez, M., Martini, A., Matvienko, D., Mckenna, J. A., Meier, F., Merola, M., Metzner, F., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Moon, T., Morda, A., Morii, T., Mrvar, M., Muroyama, G., Mussa, R., Nakamura, I., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Naruki, M., Nath, K. J., Nayak, M., Nellikunnummel, N., Neverov, D., Niebuhr, C., Ninkovic, J., Nishida, S., Nishimura, K., Nouxman, M., Nowak, G., Ogawa, K., Onishchuk, Y., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Paoloni, E., Park, H., Park, C. -S., Paschen, B., Passeri, A., Paul, S., Pedlar, T. K., Perello, M., Peruzzi, I. M., Pestotnik, R., Piilonen, L. E., Podesta Lerma, L., Popov, V., Prasanth, K., Prencipe, E., Prim, M., Purohit, M. V., Rabusov, A., Rasheed, R., Reiter, S., Remnev, M., Resmi, P. K., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L., Robertson, S. H., Rodriguez Perez, D., Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rummel, S., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sasaki, J., Sato, Y., Savinov, V., Scavino, B., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Seddon, R. M., Seino, Y., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Sfienti, C., Shapkin, M., Shen, C. P., Shimomura, M., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Skambraks, S., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Solovieva, E., Spruck, B., Stanic, S., Staric, M., Starinsky, N., Stolzenberg, U., Stottler, Z., Stroili, R., Strube, J. F., Stypula, J., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Summers, D., Sutcliffe, W., Suzuki, S. Y., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tan, J., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taras, P., Tejeda Munoz, G., Tenchini, F., Tippawan, U., Torassa, E., Trabelsi, K., Tsuboyama, T., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Ushiroda, Y., Usov, Y., Vahsen, S. E., van Tonder, R., Varner, G., Varvell, K. E., Vinokurova, A., Vitale, L., Vos, M., Vossen, A., Waheed, E., Wakeling, H., Wan, K., Wang, M. -Z., Wang, X. L., Wang, B., Warburton, A., Webb, J., Wehle, S., Wessel, C., Wiechczynski, J., Wieduwilt, P., Won, E., Xu, Q., Xu, X., Yabsley, B. D., Yamada, S., Yamamoto, H., Yan, W., Yang, S. B., Ye, H., Yeo, I., Yin, J. H., Yonenaga, M., Yoshinobu, T., Yuan, W., Yuan, C. Z., Yusa, Y., Zakharov, S., Zani, L., Zeyrek, M., Zhang, J., Zhang, Y., Zhou, X., Zhukova, V., Zhulanov, V., Zupanc, A., DE NARDO, Guglielmo, Kou, E, Urquijo, P, Altmannshofer, W, Beaujean, F, Bell, G, Beneke, M, Bigi, I I, Bishara, F, Blanke, M, Bobeth, C, Bona, M, Brambilla, N, Braun, V M, Brod, J, Buras, A J, Cheng, H Y, Chiang, C W, Ciuchini, M, Colangelo, G, Crivellin, A, Czyz, H, Datta, A, De Fazio, F, Deppisch, T, Dolan, M J, Evans, J, Fajfer, S, Feldmann, T, Godfrey, S, Gronau, M, Grossman, Y, Guo, F K, Haisch, U, Hanhart, C, Hashimoto, S, Hirose, S, Hisano, J, Hofer, L, Hoferichter, M, Hou, W S, Huber, T, Hurth, T, Jaeger, S, Jahn, S, Jamin, M, Jones, J, Jung, M, Kagan, A L, Kahlhoefer, F, Kamenik, J F, Kaneko, T, Kiyo, Y, Kokulu, A, Kosnik, N, Kronfeld, A S, Ligeti, Z, Logan, H, Lu, C D, Lubicz, V, Mahmoudi, F, Maltman, K, Mishima, S, Misiak, M, Moats, K, Moussallam, B, Nefediev, A, Nierste, U, Nomura, D, Offen, N, Olsen, S L, Passemar, E, Paul, A, Paz, G, Petrov, A A, Pich, A, Polosa, A D, Pradler, J, Prelovsek, S, Procura, M, Ricciardi, G, Robinson, D J, Roig, P, Rosiek, J, Schacht, S, Schmidt-Hoberg, K, Schwichtenberg, J, Sharpe, S R, Shigemitsu, J, Shih, D, Shimizu, N, Shimizu, Y, Silvestrini, L, Simula, S, Smith, C, Stoffer, P, Straub, D, Tackmann, F J, Tanaka, M, Tayduganov, A, Tetlalmatzi-Xolocotzi, G, Teubner, T, Vairo, A, van Dyk, D, Virto, J, Was, Z, Watanabe, R, Watson, I, Westhoff, S, Zupan, J, Zwicky, R, Abudinén, F, Adachi, I, Adamczyk, K, Ahlburg, P, Aihara, H, Aloisio, A, Andricek, L, Anh Ky, N, Arndt, M, Asner, D M, Atmacan, H, Aushev, T, Aushev, V, Ayad, R, Aziz, T, Baehr, S, Bahinipati, S, Bambade, P, Ban, Y, Barrett, M, Baudot, J, Behera, P, Belous, K, Bender, M, Bennett, J, Berger, M, Bernieri, E, Bernlochner, F U, Bessner, M, Besson, D, Bettarini, S, Bhardwaj, V, Bhuyan, B, Bilka, T, Bilmis, S, Bilokin, S, Bonvicini, G, Bozek, A, Bračko, M, Branchini, P, Braun, N, Briere, R A, Browder, T E, Burmistrov, L, Bussino, S, Cao, L, Caria, G, Casarosa, G, Cecchi, C, Červenkov, D, Chang, M-C, Chang, P, Cheaib, R, Chekelian, V, Chen, Y, Cheon, B G, Chilikin, K, Cho, K, Choi, J, Choi, S-K, Choudhury, S, Cinabro, D, Cremaldi, L M, Cuesta, D, Cunliffe, S, Dash, N, de la Cruz Burelo, E, de Lucia, E, De Nardo, G, De Nuccio, M, De Pietro, G, De Yta Hernandez, A, Deschamps, B, Destefanis, M, Dey, S, Di Capua, F, Di Carlo, S, Dingfelder, J, Doležal, Z, Domínguez Jiménez, I, Dong, T V, Dossett, D, Duell, S, Eidelman, S, Epifanov, D, Fast, J E, Ferber, T, Fiore, S, Fodor, A, Forti, F, Frey, A, Frost, O, Fulsom, B G, Gabriel, M, Gabyshev, N, Ganiev, E, Gao, X, Gao, B, Garg, R, Garmash, A, Gaur, V, Gaz, A, Geßler, T, Gebauer, U, Gelb, M, Gellrich, A, Getzkow, D, Giordano, R, Giri, A, Glazov, A, Gobbo, B, Godang, R, Gogota, O, Goldenzweig, P, Golob, B, Gradl, W, Graziani, E, Greco, M, Greenwald, D, Gribanov, S, Guan, Y, Guido, E, Guo, A, Halder, S, Hara, K, Hartbrich, O, Hauth, T, Hayasaka, K, Hayashii, H, Hearty, C, Heredia De La Cruz, I, Hernandez Villanueva, M, Hershenhorn, A, Higuchi, T, Hoek, M, Hollitt, S, Hong Van, N T, Hsu, C-L, Hu, Y, Huang, K, Iijima, T, Inami, K, Inguglia, G, Ishikawa, A, Itoh, R, Iwasaki, Y, Iwasaki, M, Jackson, P, Jacobs, W W, Jaegle, I, Jeon, H B, Ji, X, Jia, S, Jin, Y, Joo, C, Künzel, M, Kadenko, I, Kahn, J, Kakuno, H, Kaliyar, A B, Kandra, J, Kang, K H, Kato, Y, Kawasaki, T, Ketter, C, Khasmidatul, M, Kichimi, H, Kim, J B, Kim, K T, Kim, H J, Kim, D Y, Kim, K, Kim, Y, Kimmel, T D, Kindo, H, Kinoshita, K, Konno, T, Korobov, A, Korpar, S, Kotchetkov, D, Kowalewski, R, Križan, P, Kroeger, R, Krohn, J-F, Krokovny, P, Kuehn, W, Kuhr, T, Kulasiri, R, Kumar, M, Kumar, R, Kumita, T, Kuzmin, A, Kwon, Y-J, Lacaprara, S, Lai, Y-T, Lalwani, K, Lange, J S, Lee, S C, Lee, J Y, Leitl, P, Levit, D, Levonian, S, Li, S, Li, L K, Li, Y, Li, Y B, Li, Q, Li Gioi, L, Libby, J, Liptak, Z, Liventsev, D, Longo, S, Loos, A, Lopez Castro, G, Lubej, M, Lueck, T, Luetticke, F, Luo, T, Müller, F, Müller, Th, Macqueen, C, Maeda, Y, Maggiora, M, Maity, S, Manoni, E, Marcello, S, Marinas, C, Martinez Hernandez, M, Martini, A, Matvienko, D, Mckenna, J A, Meier, F, Merola, M, Metzner, F, Miller, C, Miyabayashi, K, Miyake, H, Miyata, H, Mizuk, R, Mohanty, G B, Moon, H K, Moon, T, Morda, A, Morii, T, Mrvar, M, Muroyama, G, Mussa, R, Nakamura, I, Nakano, T, Nakao, M, Nakayama, H, Nakazawa, H, Nanut, T, Naruki, M, Nath, K J, Nayak, M, Nellikunnummel, N, Neverov, D, Niebuhr, C, Ninkovic, J, Nishida, S, Nishimura, K, Nouxman, M, Nowak, G, Ogawa, K, Onishchuk, Y, Ono, H, Onuki, Y, Pakhlov, P, Pakhlova, G, Pal, B, Paoloni, E, Park, H, Park, C-S, Paschen, B, Passeri, A, Paul, S, Pedlar, T K, Perelló, M, Peruzzi, I M, Pestotnik, R, Piilonen, L E, Podesta Lerma, L, Popov, V, Prasanth, K, Prencipe, E, Prim, M, Purohit, M V, Rabusov, A, Rasheed, R, Reiter, S, Remnev, M, Resmi, P K, Ripp-Baudot, I, Ritter, M, Ritzert, M, Rizzo, G, Rizzuto, L, Robertson, S H, Rodriguez Perez, D, Roney, J M, Rosenfeld, C, Rostomyan, A, Rout, N, Rummel, S, Russo, G, Sahoo, D, Sakai, Y, Salehi, M, Sanders, D A, Sandilya, S, Sangal, A, Santelj, L, Sasaki, J, Sato, Y, Savinov, V, Scavino, B, Schram, M, Schreeck, H, Schueler, J, Schwanda, C, Schwartz, A J, Seddon, R M, Seino, Y, Senyo, K, Seon, O, Seong, I S, Sevior, M E, Sfienti, C, Shapkin, M, Shen, C P, Shimomura, M, Shiu, J-G, Shwartz, B, Sibidanov, A, Simon, F, Singh, J B, Sinha, R, Skambraks, S, Smith, K, Sobie, R J, Soffer, A, Sokolov, A, Solovieva, E, Spruck, B, Stanič, S, Starič, M, Starinsky, N, Stolzenberg, U, Stottler, Z, Stroili, R, Strube, J F, Stypula, J, Sumihama, M, Sumisawa, K, Sumiyoshi, T, Summers, D, Sutcliffe, W, Suzuki, S Y, Tabata, M, Takahashi, M, Takizawa, M, Tamponi, U, Tan, J, Tanaka, S, Tanida, K, Taniguchi, N, Tao, Y, Taras, P, Tejeda Munoz, G, Tenchini, F, Tippawan, U, Torassa, E, Trabelsi, K, Tsuboyama, T, Uchida, M, Uehara, S, Uglov, T, Unno, Y, Uno, S, Ushiroda, Y, Usov, Y, Vahsen, S E, van Tonder, R, Varner, G, Varvell, K E, Vinokurova, A, Vitale, L, Vos, M, Vossen, A, Waheed, E, Wakeling, H, Wan, K, Wang, M-Z, Wang, X L, Wang, B, Warburton, A, Webb, J, Wehle, S, Wessel, C, Wiechczynski, J, Wieduwilt, P, Won, E, Xu, Q, Xu, X, Yabsley, B D, Yamada, S, Yamamoto, H, Yan, W, Yang, S B, Ye, H, Yeo, I, Yin, J H, Yonenaga, M, Yoshinobu, T, Yuan, W, Yuan, C Z, Yusa, Y, Zakharov, S, Zani, L, Zeyrek, M, Zhang, J, Zhang, Y, Zhou, X, Zhukova, V, Zhulanov, V, Zupanc, A, Bishara, F., Blanke, M., Ciuchini, M., Crivellin, A., Evans, J., Hurth, T., Jaeger, S., Jahn, S., Lu, C. D., Rosiek, J., Shih, D., Westhoff, S., Kato, Y., Li, L. K., and Li, Y. B.
Subjects: B: semileptonic decay, Physics beyond the Standard Model, Hadron, electroproduction [charmonium], General Physics and Astronomy, ComputingMilieux_LEGALASPECTSOFCOMPUTING, B: radiative decay, annihilation [electron positron], 7. Clean energy, 01 natural sciences, charmonium: electroproduction, B physics, High Energy Physics - Experiment, law.invention, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Z', law, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Charm (quantum number), dark sector searches, Physics, lifetime, radiative decay [B], doublet [Higgs particle], new physics, High Energy Physics - Lattice (hep-lat), ddc:530, Electroweak interaction, lepton: flavor: violation, hep-ph, Particle Physics - Lattice, Monte Carlo [numerical calculations], electron positron: colliding beams, Quarkonium, asymmetry: CP, quarkonium physics, electroweak interaction: penguin, High Energy Physics - Phenomenology, Improved performance, colliding beams [electron positron], CP violation, interface, electroproduction [quarkonium], electroweak precision measurements, numerical calculations: Monte Carlo, physics, Particle Physics - Experiment, performance, Particle physics, flavor: violation [lepton], review, hep-lat, FOS: Physical sciences, BELLE, High Energy Physics - Lattice, electron positron: annihilation, quarkonium: electroproduction, CP [asymmetry], E(6), Higgs particle: doublet, mixing [D0 anti-D0], Theoretical physics, CP: violation: time dependence, KEK-B, 0103 physical sciences, quantum chromodynamics, hidden sector [photon], composite, 010306 general physics, Collider, Particle Physics - Phenomenology, photon: hidden sector, hep-ex, 010308 nuclear & particles physics, [PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat], C50 Other topics in experimental particle physics, violation: time dependence [CP], D0 anti-D0: mixing, B2TiP, 530 Physik, Experimental physics, B: leptonic decay, CKM matrix, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], penguin [electroweak interaction], leptonic decay [B], semileptonic decay [B], charm, particle identification, experimental results
Abstract: cd. autorów: L. Cao48,‡, G. Caria145,‡, G. Casarosa57,‡, C. Cecchi56,‡,D. Cˇ ervenkov10,‡,M.-C. Chang22,‡, P. Chang92,‡, R. Cheaib146,‡, V. Chekelian83,‡, Y. Chen154,‡, B. G. Cheon28,‡, K. Chilikin77,‡, K. Cho70,‡, J. Choi14,‡, S.-K. Choi27,‡, S. Choudhury35,‡, D. Cinabro170,‡, L. M. Cremaldi146,‡, D. Cuesta47,‡, S. Cunliffe16,‡, N. Dash33,‡, E. de la Cruz Burelo9,‡, E. de Lucia52,‡, G. De Nardo54,‡, †Editor. ‡Belle II Collaborator. §Theory or external contributing author. M. De Nuccio16,‡, G. De Pietro59,‡, A. De Yta Hernandez9,‡, B. Deschamps129,‡, M. Destefanis60,‡, S. Dey116,‡, F.Di Capua54,‡, S.Di Carlo75,‡, J. Dingfelder129,‡, Z. Doležal10,‡, I. Domínguez Jiménez125,‡, T.V. Dong30,26,‡, D. Dossett145,‡, S. Duell129,‡, S. Eidelman6,96,77,‡, D. Epifanov6,96,‡, J. E. Fast100,‡, T. Ferber16,‡, S. Fiore18,‡, A. Fodor85,‡, F. Forti57,‡, A. Frey24,‡, O. Frost16,‡, B. G. Fulsom100,‡, M. Gabriel83,‡, N. Gabyshev6,96,‡, E. Ganiev61,‡, X. Gao3,‡, B. Gao23,‡, R. Garg101,‡, A. Garmash6,96,‡, V. Gaur169,‡, A. Gaz90,‡, T. Geßler65,‡, U. Gebauer24,‡, M. Gelb48,‡, A. Gellrich16,‡, D. Getzkow65,‡, R. Giordano54,‡, A. Giri35,‡, A. Glazov16,‡, B. Gobbo61,‡, R. Godang157,‡, O. Gogota110,‡, P. Goldenzweig48,‡, B. Golob141,109,‡,W. Gradl63,‡, E. Graziani59,‡, M. Greco60,‡, D. Greenwald114,‡, S. Gribanov6,96,‡, Y. Guan17,‡, E. Guido60,‡, A. Guo41,‡, S. Halder111,‡, K. Hara30,26,‡, O. Hartbrich138,‡, T. Hauth48,‡, K. Hayasaka94,‡, H. Hayashii91,‡, C. Hearty130,‡, I. Heredia De La Cruz9,‡, M. Hernandez Villanueva9,‡, A. Hershenhorn130,‡, T. Higuchi66,‡,M. Hoek63,‡, S. Hollitt124,‡, N. T. HongVan44,‡, C.-L. Hsu160,‡, Y. Hu41,‡, K. Huang92,‡, T. Iijima89,90,‡, K. Inami90,‡, G. Inguglia40,‡,A. Ishikawa119,‡, R. Itoh30,26,‡, Y. Iwasaki30,‡, M. Iwasaki97,‡, P. Jackson124,‡, W. W. Jacobs37,‡, I. Jaegle137,‡, H. B. Jeon73,‡, X. Ji41,‡, S. Jia3,‡,Y. Jin162,‡, C. Joo66,‡,M. Künzel16,‡, I. Kadenko110,‡, J. Kahn78,‡, H. Kakuno121,‡, A. B. Kaliyar36,‡, J. Kandra10,‡, K. H. Kang73,‡, Y. Kato90,‡, T. Kawasaki68,‡, C. Ketter138,‡, M. Khasmidatul143,‡, H. Kichimi30,‡, J. B. Kim71,‡, K. T. Kim71,‡, H. J. Kim73,‡, D.Y. Kim108,‡, K. Kim172,‡, Y. Kim172,‡, T. D. Kimmel169,‡, H. Kindo30,26,‡, K. Kinoshita135,‡, T. Konno68,‡, A. Korobov6,96,‡, S. Korpar144,109,‡, D. Kotchetkov138,‡, R. Kowalewski165,‡, P. Križan141,109,‡, R. Kroeger146,‡, J.-F. Krohn145,‡, P. Krokovny6,96,‡, W. Kuehn65,‡, T. Kuhr78,‡, R. Kulasiri67,‡, M. Kumar81,‡, R. Kumar101,‡, T. Kumita121,‡, A. Kuzmin6,96,‡, Y.-J. Kwon172,‡, S. Lacaprara55,‡, Y.-T. Lai30,‡, K. Lalwani81,‡, J. S. Lange65,‡, S. C. Lee73,‡, J.Y. Lee106,‡, P. Leitl83,‡, D. Levit114,‡, S. Levonian16,‡, S. Li3,‡, L. K. Li41,‡, Y. Li41,‡,Y. B. Li103,‡, Q. Li103,‡, L. Li Gioi83,‡, J. Libby36,‡, Z. Liptak138,‡, D. Liventsev169,‡, S. Longo165,‡, A. Loos158,‡, G. Lopez Castro9,‡, M. Lubej109,‡, T. Lueck57,‡, F. Luetticke129,‡, T. Luo23,‡, F. Müller16,‡, Th. Müller48,‡, C. MacQueen145,‡, Y. Maeda90,‡, M. Maggiora60,‡, S. Maity33,‡, E. Manoni56,‡, S. Marcello60,‡, C. Marinas129,‡, M. Martinez Hernandez4,‡, A. Martini59,‡, D. Matvienko6,96,77,‡, J. A. McKenna130,‡, F. Meier160,‡, M. Merola54,‡, F. Metzner48,‡, C. Miller165,‡, K. Miyabayashi91,‡, H. Miyake30,26,‡, H. Miyata94,‡, R. Mizuk77,88,87,‡, G. B. Mohanty111,163,‡, H. K. Moon71,‡, T. Moon106,‡,A. Morda55,‡, T. Morii66,‡, M. Mrvar109,‡, G. Muroyama90,‡, R. Mussa60,‡, I. Nakamura30,26,‡, T. Nakano99,‡, M. Nakao30,26,‡, H. Nakayama30,26,‡, H. Nakazawa92,‡, T. Nanut109,‡, M. Naruki72,‡, K. J. Nath34,‡, M. Nayak116,‡, N. Nellikunnummel151,‡, D. Neverov90,‡, C. Niebuhr16,‡, J. Ninkovic84,‡, S. Nishida30,26,‡, K. Nishimura138,‡, M. Nouxman143,‡, G. Nowak93,‡, K. Ogawa94,‡, Y. Onishchuk110,‡, H. Ono94,‡, Y. Onuki162,‡, P. Pakhlov77,88,‡, G. Pakhlova87,‡, B. Pal5,‡, E. Paoloni57,‡, H. Park73,‡, C.-S. Park172,‡, B. Paschen129,‡, A. Passeri59,‡, S. Paul114,‡, T. K. Pedlar80,‡, M. Perelló46,‡, I. M. Peruzzi52,‡, R. Pestotnik109,‡, L. E. Piilonen169,‡, L. Podesta Lerma125,‡, V. Popov87,‡, K. Prasanth111,‡, E. Prencipe21,‡, M. Prim48,‡, M. V. Purohit158,‡, A. Rabusov114,‡, R. Rasheed47,‡, S. Reiter65,‡, M. Remnev6,96,‡, P. K. Resmi36,‡, I. Ripp-Baudot47,‡, M. Ritter78,‡, M. Ritzert139,‡, G. Rizzo57,‡, L. Rizzuto141,109,‡, S. H. Robertson85,‡, D. Rodriguez Perez125,‡, J. M. Roney165,‡, C. Rosenfeld158,‡, A. Rostomyan16,‡, N. Rout36,‡, S. Rummel78,‡, G. Russo54,‡, D. Sahoo111,‡, Y. Sakai30,26,‡, M. Salehi143,78,‡, D. A. Sanders146,‡, S. Sandilya135,‡, A. Sangal135,‡, L. Santelj47,‡, J. Sasaki162,‡, Y. Sato30,‡, V. Savinov151,‡, B. Scavino63,‡, M. Schram100,‡, H. Schreeck24,‡, J. Schueler138,‡,C. Schwanda40,‡,A. J. Schwartz135,‡,R.M. Seddon85,‡,Y. Seino94,‡, K. Senyo171,‡, O. Seon90,‡, I. S. Seong138,‡, M. E. Sevior145,‡, C. Sfienti63,‡, M. Shapkin38,‡, C. P. Shen3,‡,M. Shimomura91,‡, J.-G. Shiu92,‡, B. Shwartz6,96,‡,A. Sibidanov165,‡, F. Simon83,113,‡, J. B. Singh101,‡, R. Sinha42,‡, S. Skambraks83,‡, K. Smith145,‡, R. J. Sobie165,‡, A. Soffer116,‡, A. Sokolov38,‡, E. Solovieva77,87,‡, B. Spruck63,‡, S. Staniˇc149,‡, M. Stariˇc109,‡, N. Starinsky147,‡, U. Stolzenberg24,‡, Z. Stottler169,‡, R. Stroili55,‡, J. F. Strube100,‡, J. Stypula93,‡, M. Sumihama25,‡, K. Sumisawa30,26,‡, T. Sumiyoshi121,‡, D. Summers146,‡, W. Sutcliffe48,‡, S. Y. Suzuki30,26,‡, M. Tabata13,‡, M. Takahashi16,‡, M. Takizawa107,‡, U. Tamponi60,‡, J. Tan145,‡, S. Tanaka30,26,‡, K. Tanida2,‡, N. Taniguchi30,‡, Y. Tao137,‡, P. Taras147,‡, G. Tejeda Munoz4,‡, F. Tenchini16,‡, U. Tippawan12,‡, E. Torassa55,‡, K. Trabelsi30,26,‡, T. Tsuboyama30,26,‡, M. Uchida120,‡, S. Uehara30,26,‡, T. Uglov77,87,‡, Y. Unno28,‡, S. Uno30,26,‡, Y. Ushiroda30,26,162,‡, Y. Usov6,96,‡, S. E. Vahsen138,‡, R. van Tonder48,‡, G. Varner138,‡, K. E. Varvell160,‡, A. Vinokurova6,96,‡, L.Vitale61,‡,M.Vos46,‡,A.Vossen17,‡,E.Waheed145,‡,H.Wakeling85,‡,K.Wan162,‡, M.-Z.Wang92,‡, X. L. Wang23,‡, B. Wang135,‡, A. Warburton85,‡, J. Webb145,‡, S. Wehle16,‡, C. Wessel129,‡, J. Wiechczynski93,‡, P. Wieduwilt24,‡, E. Won71,‡, Q. Xu41,‡, X. Xu41,‡, B. D. Yabsley160,‡, S. Yamada30,‡, H. Yamamoto119,‡, W. Yan3,‡, W. Yan154,‡, S. B. Yang71,‡, H. Ye16,‡, I. Yeo70,‡, J. H. Yin41,‡, M. Yonenaga121,‡, T. Yoshinobu94,‡, W. Yuan55,‡, C. Z. Yuan41,‡, Y. Yusa94,‡, S. Zakharov77,87,‡, L. Zani57,‡, M. Zeyrek86,‡, J. Zhang41,‡,Y. Zhang23,‡,Y. Zhang154,‡, X. Zhou3,‡, V. Zhukova77,‡, V. Zhulanov6,96,‡, and A. Zupanc141,109,‡ †Editor. ‡Belle II Collaborator. §Theory or external contributing author., "The Belle II Theory Interface Platform (B2TiP) was created as a physics prospects working group of the Belle II collaboration in June 2014. It offered a platform where theorists and experimentalists could work together to elucidate the potential impacts of the Belle II program, which includes a wide scope of physics topics: B physics, charm, τ , quarkonium physics, electroweak precision measurements, and dark sector searches. It is composed of nine working groups (WGs), which 6/654 Downloaded from https://academic.oup.com/ptep/article-abstract/2019/12/123C01/5685006 by Uniwersytet Slaski Biblioteka Glowna user on 20 February 2020 PTEP 2019, 123C01 E. Kou et al. are coordinated by teams of theory and experiment conveners: WG1, Semileptonic and leptonic B Decays; WG2, Radiative and Electroweak Penguins; WG3, φ1 and φ2 (Time-Dependent CP Violation) Measurements; WG4, φ3 Measurement; WG5, Charmless Hadronic B Decay; WG6, Charm; WG7, Quarkonium(-like); WG8, τ and Low-Multiplicity Processes; WG9, New Physics. We organized workshops twice a year from 2014 until 2016, which moved from KEK in Japan to Europe and the Americas, gathering experts in the respective fields for discussions with Belle II members. One of the goals for B2TiP was to propose so-called “golden and silver channels”: we asked each working group to choose, among numerous possible measurements, those that would have the highest potential impact and to focus on them for the writeup. Theorists scrutinized the role of those measurements in terms of understanding the theory behind them, and estimated the theoretical uncertainties now achievable as well as prospects for the future. For flavor physics, having tight control of hadronic uncertainties is one of the most crucial aspects in the field, and this is considered an important criterion in determining the golden or silver channels. Experimentalists, on the other hand, investigated the expected improvements with data from Belle II. For the channels where the errors are dominated by statistical uncertainties, or where systematic errors are reducible, the errors can decrease rapidly as more data becomes available. The impact of the upgraded performance from Belle II is a crucial element in reducing the uncertainties: we therefore include the latest available studies of the detector efficiency using Monte Carlo simulated events.We list the golden and silver channel table in the introductory chapter, as a guide for the chapters that follow. This book is not a collection of reports based on talks given at the workshops. The working group conveners endeavored to construct a coherent document that can be used by Belle II collaborators, and others in the field of flavor physics, as a reference. Two books of a similar type have been produced in the past: The BaBar Book [1] and The Physics of the B Factories [2]. In order to avoid too much repetition with respect to those references, we refer to them wherever possible for introductory material. We would like to thank the section editors and contributing authors for the many stimulating discussions and their tremendous efforts in bringing the book together." (Preface)
Published: 2019

22. Alignment and Calibration of the Belle II Detector

Author: C. Kleinwort, Jakub Kandra, Tadeáၡ Bilka, Yinghui Guan, M. E. Sevior, K. Chilikin, and David Dossett
Subjects: Luminosity (scattering theory), Pixel, 010308 nuclear & particles physics, Computer science, Physics::Instrumentation and Detectors, Physics, QC1-999, Real-time computing, Detector, computer.software_genre, 01 natural sciences, law.invention, Software framework, Workflow, law, Computer cluster, 0103 physical sciences, Calibration, High Energy Physics::Experiment, 010306 general physics, Collider, computer
Abstract: In spring 2018 the SuperKEKB electron-positron collider at High Energy Accelerator Research Organization (KEK, Tsukuba, Japan) will deliver its first collisions to the Belle II experiment. The aim of Belle II is to collect a data sample 50 times larger than the previous generation of BFactories taking advantage of the unprecedented SuperKEKB design luminosity of 8×1035cm-2s-1. The Belle II detector will allow to conduct precise measurements in the harsh collider environment, probing for signs of physics beyond the standard model at the precision frontier. In order to deliver data suitable for physics analysis, the detector has to be properly calibrated on a regular basis. Among other calibrations the detector alignment plays a key role. For example, precise measurements of time dependent CP-violation rely on the accurate alignment of the new vertex detector, as well as on the determination of the beamspot position and size. To automate the calibration procedures and manage the large amount of data and processing power needed for detector calibration, a software framework has been developed which allows to define the complete workflow and to execute it on a computing cluster. The framework integrates the Millepede II algorithm to solve the large minimization problem emerging in the track-based alignment and calibration of the pixel and strip detector, the central drift chamber, and the muon system. The first collision data will allow to test and to further improve and tune the alignment and calibration procedures. Although the vertexing capabilities will be limited due to the installation of only a small slice of the full vertex detector, the commissioning phase will allow to test most of the alignment procedure features and to prepare for the full operation. We will present the results achieved during the first data taking, the experience gained and the plans for the first physics run with the full detector.
Published: 2019

23. The Belle II silicon vertex detector: assembly and initial results

Author: To. Baroncelli, M. Kaleta, M. Ceccanti, Keigo Hara, N. Sato, N. Kambara, S. Bettarini, Y. Onuki, W. Kun, B. Bhuyan, Prafulla Kumar Behera, C. La Licata, E. L. Barberio, G. Batignani, J. Stypula, C. W. Joo, Satoshi Tanaka, I. J. Watson, A. Bauer, Shih-Chang Lee, F. Forti, P. K. Resmi, Z. Doležal, Giulia Casarosa, S. Koike, Ti. Baroncelli, Jae-Young Lee, Takeo Higuchi, J. Libby, Christian Irmler, Peter Kodys, N. Dash, T. Kohriki, Phillip Urquijo, M. De Nuccio, A. K. Basith, M. Rozanska, G. Caria, F. Buchsteiner, W. Ostrowicz, Markus Friedl, K. Prasanth, J.A.M. Grimaldo, H. Aihara, K. K. Rao, Shoichi Watanuki, K. Nakamura, S. Bacher, Jakub Kandra, M. Kumar, H. Park, A. Bozek, L. Bosisio, T. Lueck, Steven Williams, Jun Sasaki, V. Bertacchi, R. Thalmeier, B. Gobbo, K. Lalwani, C. Schwanda, S. N. Mayekar, L. Lanceri, P. Mammini, T. Tsuboyama, H. Yin, Z. Natkaniec, J. Wiechczynski, Tariq Aziz, Filippo Bosi, T. Bilka, M. Watanabe, John Webb, L. Vitale, T. Morii, G. Rizzo, Seema Bahinipati, A. Martini, D. Červenkov, E. Paoloni, Peter Kvasnicka, S. Schultschik, Dipak Kumar Sahoo, L. Zani, Ilya Komarov, Gagan Bihari Mohanty, Rakesh Kumar, K. H. Kang, A. Paladino, J. Suzuki, I. Rashevskaya, A. Profeti, T. Czank, H. Tanigawa, G. N. Taylor, H. B. Jeon, A. Ishikawa, Thalmeier, R., Casarosa, G., Schwanda, C., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Barberio, E., Baroncelli, Ti., Baroncelli, To., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bertacchi, V., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, L., Bozek, A., Buchsteiner, F., Caria, G., Ceccanti, M., Červenkov, D., Czank, T., Dash, N., De Nuccio, M., Doležal, Z., Forti, F., Friedl, M., Gobbo, B., Grimaldo, J. A. M., Hara, K., Higuchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kaleta, M., Kandra, J., Kambara, N., Kang, K. H., Kodyš, P., Kohriki, T., Koike, S., Komarov, I., Kumar, M., Kumar, R., Kun, W., Kvasnička, P., La Licata, C., Lalwani, K., Lanceri, L., Lee, J. Y., Lee, S. C., Libby, J., Lueck, T., Mammini, P., Martini, A., Mayekar, S. N., Mohanty, G. B., Morii, T., Nakamura, K. R., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Prasanth, K., Profeti, A., Rashevskaya, I., Rao, K. K., Rizzo, G., Resmi, P. K., Rozanska, M., Sahoo, D., Sasaki, J., Sato, N., Schultschik, S., Stypula, J., Suzuki, J., Tanaka, S., Tanigawa, H., Taylor, G. N., Tsuboyama, T., Urquijo, P., Vitale, L., Watanuki, S., Watanabe, M., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., Yin, H., and Zani, L.
Subjects: assembly, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Instrumentation, Assembly, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Phase (waves), STRIPS, Capacitance, law.invention, Optics, first results, silicon vertex detector, law, First results, Silicon vertex detector, Nuclear and High Energy Physic, Physics, One half, business.industry, Noise (signal processing), Detector, Radio propagation, First result, High Energy Physics::Experiment, business
Abstract: The “chip-on-sensor” concept of this detector minimizes the distance of the signal propagation from the double-sided silicon detector strips to the readout chips and thus reduces noise from strip capacitance. One half of the detector is built, the second half is being assembled at the time of writing. Prototypes have been tested in several test beams as well as in the so-called Phase 2 setup inside the detector structure. First results from a commissioning run of the Belle-II prototype SVD detector are presented. The measured signal-to-noise and timing performance are found to be according to design specifications.
Published: 2019

24. Simultaneous Global and Local Alignment of the Belle II Tracking Detectors

Author: Claus Kleinwort, Jakub Kandra, Radek Zlebcik, and T. Bilka
Subjects: Physics, Smith–Waterman algorithm, Physics::Instrumentation and Detectors, business.industry, QC1-999, Detector, Computer vision, Artificial intelligence, business, Tracking (particle physics)
Abstract: The alignment of the Belle II tracking system, composed of a pixel and strip vertex detectors and central drift chamber, is described by approximately sixty thousand parameters; from local alignment of sensors and wires to relative global alignment of the sub-detectors. In the next data reprocessing, scheduled since Spring 2021, we aim to determine all parameters in a simultaneous fit by Millepede II, where recent developments allow to achieve a direct solution of the full problem in about one hour and make it practically feasible for regular detector alignment. The tracking detectors and the alignment technique are described and the alignment strategy is discussed in the context of studies on simulations and experience obtained from recorded data. Preliminary results and further refinements based on studies of real Belle II data are presented.
Published: 2021

25. Belle II Silicon Vertex Detector (SVD)

Author: To. Baroncelli, Keigo Hara, S. R. Chendvankar, K. Adamczyk, Gagan Bihari Mohanty, A. Profeti, K. K. Rao, Ti. Baroncelli, Satoshi Tanaka, A. Martini, Rakesh Kumar, K. H. Kang, Filippo Bosi, F. Buchsteiner, J. Wiechczynski, Dipanwita Dutta, T. Bilka, T. Lueck, A. Paladino, Y. Onuki, K. Nakamura, M. Rozanska, G. Rizzo, D. Červenkov, Jakub Kandra, F. Forti, M. Watanabe, A. Bauer, R. Thomas, T. Morii, W. Kun, N. Dash, G. Casarosa, Seema Bahinipati, L. Bosisio, A. K. Basith, Steven Williams, P. K. Resmi, E. L. Barberio, Masatoshi Maki, C. W. Joo, E. Paoloni, J. Lettenbicher, S. T. Divekar, A. Bozek, S. Koike, Shih-Chang Lee, V. Babu, T. Yoshinobu, Hitoshi Yamamoto, T. Kohriki, Peter Kodys, Phillip Urquijo, R. Thalmeier, L. Zani, L. Bulla, S. Bacher, I. Komarov, Z. Doležal, H. Yin, S. N. Mayekar, Corrado Angelini, Fabrizio Giulio Luca Pilo, G. Batignani, Tariq Aziz, J. Stypula, Peter Kvasnicka, M. Ceccanti, N. Sato, Christian Irmler, N. Kambara, B. Bhuyan, G. N. Taylor, W. Ostrowicz, I. J. Watson, M. M. Kolwalkar, J. Suzuki, I. Rashevskaya, Thomas Bergauer, H. Aihara, S. Schultschik, S. Bettarini, G. De Pietro, Markus Friedl, H. Park, P. Mammini, Satoru Uozumi, Jun Sasaki, Saraju P. Mohanty, T. Horiguchi, B. Würkner, Prafulla Kumar Behera, B. Gobbo, J. Libby, C. Schwanda, Z. Natkaniec, Y. Seino, Takeo Kawasaki, Shoichi Watanuki, Takuya Higuchi, H. B. Jeon, A. Ishikawa, T. Tsuboyama, John Webb, L. Vitale, Noritaka Shimizu, L. Lanceri, Zhen-An Liu, Bahinipati, S., Adamczyk, K., Aihara, H., Angelini, C., Aziz, T., Babu, V., Bacher, S., Barberio, E., Baroncelli, Ti., Baroncelli, To., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bergauer, T., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, L., Bozek, A., Buchsteiner, F., Bulla, L., Casarosa, G., Ceccanti, M., Červenkov, D., Chendvankar, S. R., Dash, N., De Pietro, G., Divekar, S. T., Doležal, Z., Dutta, D., Forti, F., Friedl, M., Gobbo, B., Hara, K., Higuchi, T., Horiguchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kandra, J., Kambara, N., Kang, K. H., Kawasaki, T., Kodyš, P., Kohriki, T., Koike, S., Kolwalkar, M. M., Komarov, I., Kumar, R., Kun, W., Kvasnička, P., Lanceri, L., Lettenbicher, J., Libby, J., Lee, S. C., Lueck, T., Maki, M., Mammini, P., Martini, A., Mayekar, S. N., Mohanty, G. B., Mohanty, S., Morii, T., Nakamura, K. R., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Pilo, F., Profeti, A., Rashevskaya, I., Rao, K. K., Rizzo, G., Resmi, P. K., Rozanska, M., Sasaki, J., Sato, N., Schultschik, S., Schwanda, C., Seino, Y., Shimizu, N., Stypula, J., Suzuki, J., Tanaka, S., Taylor, G. N., Thalmeier, R., Thomas, R., Tsuboyama, T., Uozumi, S., Urquijo, P., Vitale, L., Watanuki, S., Watanabe, M., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., Würkner, B., Yamamoto, H., Yin, H., Yoshinobu, T., and Zani, L.
Subjects: Physics, business.industry, Bandwidth (signal processing), Flash ADC, Computational science, Physics and Astronomy (all), Data acquisition, Analog signal, Parasitic capacitance, Application-specific integrated circuit, Computer data storage, Singular value decomposition, business
Abstract: The Belle II experiment at the SuperKEKB collider in Japan will operate at an unprecedented luminosity of $8\,\times \,10^{35}$ cm$^{-2}$s$^{-1}$, about 40 times larger than its predecessor, Belle. Its vertex detector is composed of a two-layer DEPFET pixel detector (PXD) and a four layer double-sided silicon microstrip detector (SVD). To achieve a precise decay-vertex position determination and excellent low-momentum tracking under a harsh background condition and high trigger rate of 10 kHz, the SVD employs several innovative techniques. In order to minimize the parasitic capacitance in the signal path, 1748 APV25 ASIC chips, which read out signal from 224 k strip channels, are directly mounted on the modules with the novel Origami concept. The analog signal from APV25 are digitized by a flash ADC system, and sent to the central DAQ as well as to online tracking system based on SVD hits to provide region of interests to the PXD for reducing the latter’s data size to achieve the required bandwidth and data storage space. Furthermore, the state-of-the-art dual phase $\hbox {CO}_2$ cooling solution has been chosen for a combined thermal management of the PXD and SVD system. In this proceedings, we present key design principles, module construction and integration status of the Belle II SVD.
Published: 2018

26. Alignment and physics performance of the Belle II vertex detector

Author: Jakub Kandra and T. Bilka
Subjects: Systematic error, Physics, Particle physics, Pixel, Physics::Instrumentation and Detectors, Detector, CP violation, High Energy Physics::Experiment, Observable, Vertex detector, Silicon vertex detector, Vertex (geometry)
Abstract: The Belle II experiment at the SuperKEKB accelerator will start to take physics data in 2018. One of the major upgrades of the Belle II detector introduces DEPFET pixel sensors in the two innermost layers of its silicon vertex detector, followed by four layers of silicon strip sensors. Excellent performance of the vertex reconstruction is a crucial ingredient in CP violation measurements and will require reliable and fast alignment procedure and continuous monitoring of the detector performance. To address the possible systematic errors of the procedure, a dedicated study has been performed to identify and evaluate influence of possible random and systematic deformations of the vertex detector on physics observables.
Published: 2017

27. The Belle II silicon vertex detector assembly and mechanics

Author: P. Mammini, T. Lueck, V. Babu, G. Casarosa, S. Koike, Peter Kodys, Y. Onuki, H. B. Jeon, K. Negishi, Tariq Aziz, R. Thomas, Satoshi Tanaka, A. Ishikawa, B. Bhuyan, Saraju P. Mohanty, Seema Bahinipati, E. L. Barberio, N. K. Nisar, T. Morii, Thomas Bergauer, B. Würkner, C. Schwanda, C. W. Joo, Peter Kvasnicka, Dipanwita Dutta, S. Bacher, S. Schultschik, Kiyoshi Tanida, S. Bettarini, Fabrizio Giulio Luca Pilo, T. Yoshinobu, N. Shimizu, G. B. Mohanty, K. H. Kang, Y. Seino, E. Kato, H. Park, A. Bozek, Z. Natkaniec, Z. Doležal, F. Forti, Shoichi Watanuki, M. Ceccanti, Steven Williams, I. J. Watson, Hitoshi Yamamoto, N. Sato, Satoru Uozumi, Corrado Angelini, S. T. Divekar, M. M. Kolwalkar, A. Bauer, T. Kohriki, Phillip Urquijo, A. Paladino, Jun Sasaki, T. Horiguchi, Takeo Higuchi, L. Bulla, Christian Irmler, R. Thalmeier, Filippo Bosi, John Webb, Prafulla Kumar Behera, L. Vitale, Markus Friedl, T. Bilka, T. Kawasaki, S. R. Chendvankar, G. N. Taylor, W. Ostrowicz, K. Adamczyk, S. N. Mayekar, H. Yin, H. Aihara, J. Suzuki, K. K. Rao, L. Lanceri, I. Rashevskaya, G. Batignani, J. Stypula, T. Tsuboyama, E. Paoloni, Masatoshi Maki, J. Wiechczynski, To. Baroncelli, Keigo Hara, N. Dash, A. K. Basith, M. Rozanska, J. Lettenbicher, F. Buchsteiner, Ti. Baroncelli, K. Nakamura, Jakub Kandra, L. Bosisio, D. Červenkov, G. Rizzo, A. Profeti, Bosisio, L., Lanceri, L., and Vitale, L.
Subjects: Particle physics, Vertex (computer graphics), Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Instrumentation, media_common.quotation_subject, 01 natural sciences, Asymmetry, 030218 nuclear medicine & medical imaging, law.invention, 03 medical and health sciences, Silicon module construction, 0302 clinical medicine, law, 0103 physical sciences, Silicon vertex tracker, Belle II, Collider, Nuclear and High Energy Physic, media_common, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Detector, visual_art, Electronic component, visual_art.visual_art_medium, CP violation, High Energy Physics::Experiment
Abstract: The Belle II experiment at the asymmetric SuperKEKB collider in Japan will operate at an instantaneous luminosity approximately 50 times greater than its predecessor (Belle). The central feature of the experiment is a vertex detector comprising two layers of pixelated silicon detectors (PXD) and four layers of double-sided silicon microstrip detectors (SVD). One of the key measurements for Belle II is CP violation asymmetry in the decays of beauty and charm hadrons, which hinges on a precise charged-track vertex determination and low-momentum track measurement. Towards this goal, a proper assembly of the SVD components with precise alignment ought to be performed and the geometrical tolerances should be checked to fall within the design limits. We present an overview of the assembly procedure that is being followed, which includes the precision gluing of the SVD module components, wire-bonding of the various electrical components, and precision 3D coordinate measurements of the final SVD modules. Finally, some results from the latest test-beam are reported.
Published: 2017

28. The Belle II SVD detector

Author: Filippo Bosi, Corrado Angelini, B. Bhuyan, T. Bilka, M. Watanabe, Christian Irmler, Thomas Bergauer, R. Thalmeier, Peter Kvasnicka, Noriaki K. Sato, Soumya D. Mohanty, K. Hara, A. Bauer, E. Paoloni, K. H. Kang, S. T. Divekar, Phillip Urquijo, G. De Pietro, Noritaka Shimizu, A. K. Basith, M. Rozanska, N. Kambara, G. Caria, J. Lettenbicher, A. Paladino, Z. Natkaniec, J. Suzuki, G. N. Taylor, W. Ostrowicz, I. Rashevskaya, Katsuro Nakamura, S. N. Mayekar, S. Bettarini, T. Lueck, V. Babu, C. Joo, G. Casarosa, T. Kawasaki, To. Baroncelli, P. K. Resmi, L. Zani, T. Horiguchi, L. Lanceri, S. Schultschik, Dipanwita Dutta, Ti. Baroncelli, B. Würkner, G. Batignani, J. Libby, S. Bacher, Y. Onuki, S. Koike, J. Stypula, F. Buchsteiner, I. J. Watson, Markus Friedl, N. Dash, Peter Kodys, F. Forti, R. Thomas, T. Morii, J. C. Webb, L. Vitale, W. Kun, Y. Seino, H. Park, A. Bozek, H. B. Jeon, Shoichi Watanuki, E. L. Barberio, A. Ishikawa, Jakub Kandra, A. Profeti, T. Kohriki, L. Bosisio, Tariq Aziz, Seema Bahinipati, T. Yoshinobu, Masatoshi Maki, M. Ceccanti, L. Bulla, Jun Sasaki, Z. Doležal, T. Tsuboyama, H. Yamamoto, C. La Licata, G. B. Mohanty, G. Rizzo, Steven Williams, J. Wiechczynski, Fabrizio Giulio Luca Pilo, Rahul Kumar, K. Adamczyk, D. Červenkov, Satoshi Tanaka, H. Yin, S. Uozumi, C. Schwanda, S. R. Chendvankar, H. Aihara, K. K. Rao, M. M. Kolwalkar, P. K. Behera, P. Mammini, and T. Higuchi
Subjects: Vertex (computer graphics), belle ii, Physics::Instrumentation and Detectors, Computer science, vertex detector, Detector, Tracking (particle physics), Computer Science::Numerical Analysis, Silicon vertex detector, Semiconductor detector, silicon vertex detector, Computer Science::Multimedia, Singular value decomposition, Physics::Accelerator Physics, High Energy Physics::Experiment, Algorithm, Beam (structure), silicon detector, Pixel detector
Abstract: The Silicon Vertex Detector (SVD) is one of the main detectors in the Belle II experiment at KEK, Japan. In combination with a pixel detector, the SVD determines precise decay vertex and low-momentum track reconstruction. The SVD ladders are being developed at several institutes. For the development of the tracking algorithm as well as the performance estimation of the ladders, beam tests for the ladders were performed. We report an overview of the SVD development, its performance measured in the beam test, and the prospect of its assembly and commissioning until installation.
Published: 2017

29. The Belle II SVD data readout system

Author: V. Babu, Tariq Aziz, Kiyoshi Tanida, B. Würkner, T. Lueck, T. Kawasaki, N. K. Nisar, E. Kato, W. Ostrowicz, H. Yin, Satoru Uozumi, Seema Bahinipati, Dipanwita Dutta, N. Shimizu, C. W. Joo, F. Buchsteiner, M. Ceccanti, A. Bauer, R. Thalmeier, Ti. Baroncelli, Fabrizio Giulio Luca Pilo, Y. Seino, P. Mammini, Prafulla Kumar Behera, T. Tsuboyama, S. N. Mayekar, L. Lanceri, Peter Kvasnicka, Shoichi Watanuki, Eugenio Paoloni, T. Kohriki, S. Schultschik, J. Wiechczynski, F. Forti, Noriaki K. Sato, Satoshi Tanaka, T. Horiguchi, K. Nakamura, Markus Friedl, K. Adamczyk, G. B. Mohanty, G. Batignani, L. Bulla, J. Stypula, Z. Doleźal, Jakub Kandra, L. Bosisio, G. Rizzo, S. Bacher, Corrado Angelini, Jun Sasaki, S. Koike, P. Kodyś, Steven Williams, Y. Onuki, K. H. Kang, R. Thomas, J. Suzuki, T. Morii, I. Rashevskaya, To. Baroncelli, Takuya Higuchi, H. Park, A. Bozek, Christian Irmler, John Webb, L. Vitale, Hitoshi Yamamoto, K. Negishi, B. Bhuyan, E. L. Barberio, Thomas Bergauer, K. Hara, N. Dash, A. K. Basith, M. Rozanska, J. Lettenbicher, T. Yoshinobu, Masatoshi Maki, Saraju P. Mohanty, C. Schwanda, G. N. Taylor, I. J. Watson, Antonio Paladino, Giulia Casarosa, S. T. Divekar, Phillip Urquijo, S. R. Chendvankar, S. Bettarini, K. K. Rao, H. Aihara, A. Profeti, Z. Natkaniec, M. M. Kolwalkar, D. Červenkov, Filippo Bosi, T. Bilka, H. B. Jeon, A. Ishikawa, Bosisio, L., Lanceri, L., and Vitale, L.
Subjects: Physics, Signal processing, Nuclear and High Energy Physics, Finite impulse response, 010308 nuclear & particles physics, business.industry, Detector, Electrical engineering, Analog-to-digital converter, 01 natural sciences, Signal, Multiplexing, 030218 nuclear medicine & medical imaging, law.invention, 03 medical and health sciences, 0302 clinical medicine, Analog signal, Belle II Data Readout System, Instrumentation, law, 0103 physical sciences, Electronics, business, Nuclear and High Energy Physic
Abstract: The Belle II Experiment at the High Energy Accelerator Research Organization (KEK) in Tsukuba, Japan, will explore the asymmetry between matter and antimatter and search for new physics beyond the standard model. 172 double-sided silicon strip detectors are arranged cylindrically in four layers around the collision point to be part of a system which measures the tracks of the collision products of electrons and positrons. A total of 1748 radiation-hard APV25 chips read out 128 silicon strips each and send the analog signals by time-division multiplexing out of the radiation zone to 48 Flash Analog Digital Converter Modules (FADC). Each of them applies processing to the data; for example, it uses a digital finite impulse response filter to compensate line signal distortions, and it extracts the peak timing and amplitude from a set of several data points for each hit, using a neural network. We present an overview of the SVD data readout system, along with front-end electronics, cabling, power supplies and data processing.
Published: 2017

30. The track finding algorithm of the Belle II vertex detectors

Author: Felix Metzner, Tobias Schlüter, Jonas Wagner, Michael Schnell, Jakob Lettenbichler, Bjoern Spruck, Jakub Kandra, Peter Kodys, Moritz Nadler, B. Oberhof, Thomas Hauth, Oliver Frost, Thomas Madlener, Giulia Casarosa, M. Heck, Thomas Lück, Eugenio Paoloni, Martin Ritter, Michael Ziegler, Viktor Trusov, C. Wessel, T. Bilka, Nils Braun, Peter Kvasnicka, M. T. Prim, and R. Frühwirth
Subjects: Physics, Particle physics, Pixel, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Track (disk drive), QC1-999, Detector, Charged particle track finding(all), Tracking (particle physics), 01 natural sciences, Particle detector, law.invention, Momentum, law, 0103 physical sciences, ddc:530, High Energy Physics::Experiment, 010306 general physics, Collider, Algorithm, Energy (signal processing)
Abstract: The Belle II experiment is a high energy multi purpose particle detector operated at the asymmetric e + e − - collider SuperKEKB in Tsukuba (Japan). In this work we describe the algorithm performing the pattern recognition for inner tracking detector which consists of two layers of pixel detectors and four layers of double sided silicon strip detectors arranged around the interaction region. The track finding algorithm will be used both during the High Level Trigger on-line track reconstruction and during the off-line full reconstruction. It must provide good efficiency down to momenta as low as 50 MeV/c where material effects are sizeable even in an extremely thin detector as the VXD. In addition it has to be able to cope with the high occupancy of the Belle II detectors due to the background. The underlying concept of the track finding algorithm, as well as details of the implementation are outlined. The algorithm is proven to run with good performance on simulated ϒ(4S ) → BB events with an efficiency for reconstructing tracks of above 90% over a wide range of momentum.
Published: 2017

31. EMC studies for the vertex detector of the Belle II experiment

Author: Antonio Paladino, Noriaki K. Sato, A. Bauer, V. Babu, M. M. Kolwalkar, G. B. Mohanty, Eugenio Paoloni, Giulia Casarosa, Prafulla Kumar Behera, H. G. Moser, Markus Friedl, M. Volpi, S. T. Divekar, Phillip Urquijo, Y. Onuki, R. Thomas, T. Morii, E. L. Barberio, F. Buchsteiner, K. Adamczyk, Kiyoshi Tanida, N. Dash, Satoshi Tanaka, Takuya Higuchi, Seema Bahinipati, Satoru Uozumi, G. Rizzo, Filippo Bosi, C. W. Joo, Steven Williams, E. Kato, T. Bilka, A. K. Basith, S. Rummel, S. Koike, W. Ostrowicz, Peter Kodys, Tariq Aziz, Z. Doležal, M. Rozanska, T. Horiguchi, I. J. Watson, N. K. Nisar, K. H. Kang, J. Lettenbicher, Peter Kvasnicka, B. Bhuyan, L. Lanceri, F. Arteche, Dipanwita Dutta, S. Schultschik, I. Echeverria, Christian Irmler, Hiroaki Aihara, G. Batignani, N. Shimizu, Thomas Bergauer, M. Ceccanti, J. Stypula, T. Tsuboyama, To. Baroncelli, Saraju P. Mohanty, K. Hara, G. N. Taylor, B. Würkner, Jun Sasaki, S. Bacher, J. Wiechczynski, Fabrizio Giulio Luca Pilo, C. Schwanda, R. Thalmeier, T. Kohriki, S. N. Mayekar, Y. Seino, J. Suzuki, H. Park, A. Bozek, John Webb, L. Vitale, Shoichi Watanuki, F. Forti, C. Angelini, S. R. Chendvankar, S. Bettarini, I. Rashevskaia, K. K. Rao, T. Kawasaki, M. Iglesias, T. Yoshinobu, Masatoshi Maki, K. Nakamura, Jakub Kandra, L. Bosisio, Z. Natkaniec, S. Sandilya, K. Negishi, D. Červenkov, P. Mammini, H. B. Jeon, A. Ishikawa, C. Kiesling, Hitoshi Yamamoto, H. Yin, and A. Profeti
Subjects: Vertex (computer graphics), Physics::Instrumentation and Detectors, Topology (electrical circuits), 01 natural sciences, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Transmission line, Detector grounding, Front-end electronics for detector readout, 0103 physical sciences, Power cable, Special cables, Instrumentation, Mathematical Physics, Voltage distributions, Physics, 010308 nuclear & particles physics, Ground, business.industry, Electrical engineering, Noise, Upgrade, Bundle, business
Abstract: The upgrade of the Belle II experiment plans to use a vertex detector based on two different technologies, DEPFET pixel (PXD) technology and double side silicon microstrip (SVD) technology. The vertex electronics are characterized by the topology of SVD bias that forces to design a sophisticated grounding because of the floating power scheme. The complex topology of the PXD power cable bundle may introduce some noise inside the vertex area. This paper presents a general overview of the EMC issues present in the vertex system, based on EMC tests on an SVD prototype and a study of noise propagation in the PXD cable bundle based on Multi-conductor transmission line theory.
Published: 2016

32. Construction and test of the first Belle II SVD ladder implementing the origami chip-on-sensor design

Author: Satoru Uozumi, G. B. Mohanty, B. Würkner, T. Horiguchi, M. M. Kolwalkar, N. Dash, A. K. Basith, Y. Seino, M. Rozanska, Seema Bahinipati, B. Bhuyan, K. Adamczyk, P. Mammini, Shoichi Watanuki, R. Thalmeier, J. Lettenbicher, K. Nakamura, Giulia Casarosa, Thomas Bergauer, F. Forti, Kiyoshi Tanida, E. Kato, F. Buchsteiner, A. Bauer, Jakub Kandra, Z. Doležal, S. N. Mayekar, S. R. Chendvankar, Peter Kvasnicka, R. Frühwirth, Fabrizio Giulio Luca Pilo, K. Hara, S. T. Divekar, Phillip Urquijo, S. Bacher, V. Babu, S. Schultschik, L. Bosisio, Tariq Aziz, K. K. Rao, To. Baroncelli, H. Park, A. Bozek, Takuya Higuchi, Noriaki K. Sato, N. K. Nisar, H. Yin, M. Volpi, T. Tsuboyama, Y. Onuki, Dipanwita Dutta, C. W. Joo, N. Shimizu, I. Rashevskaia, Corrado Angelini, J. Wiechczynski, R. Thomas, T. Morii, J. Suzuki, G. Rizzo, Antonio Paladino, Steven Williams, T. Kawasaki, E. L. Barberio, Z. Natkaniec, T. Kohriki, Ti. Baroncelli, K. Negishi, D. Červenkov, Hitoshi Yamamoto, K. H. Kang, Christian Irmler, A. Profeti, Jun Sasaki, John Webb, L. Vitale, S. Sandilya, Hiroaki Aihara, G. Batignani, J. Stypula, M. Ceccanti, Satoshi Tanaka, S. Koike, Peter Kodys, G. N. Taylor, S. Bettarini, T. Yoshinobu, Masatoshi Maki, Prafulla Kumar Behera, H. B. Jeon, A. Ishikawa, Saraju P. Mohanty, C. Schwanda, I. J. Watson, Filippo Bosi, T. Bilka, Eugenio Paoloni, W. Ostrowicz, Markus Friedl, L. Lanceri, Irmler, C, Adamczyk, K., Aihara, H., Angelini, C., Aziz, T., Babu, V., Bacher, S., Bahinipati, S., Barberio, E., Baroncelli, T. i., Baroncelli, T. o., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bergauer, T., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, Luciano, Bozek, A., Buchsteiner, F., Casarosa, G., Ceccanti, M., �ervenkov, D., Chendvankar, S. R., Dash, N., Divekar, S. T., Dole�al, Z., Dutta, D., Forti, F., Friedl, M., Fr�hwirth, R., Hara, K., Higuchi, T., Horiguchi, T., Ishikawa, A., Jeon, H. B., Joo, C., Kandra, J., Kang, K. H., Kato, E., Kawasaki, T., Kody�, P., Kohriki, T., Koike, S., Kolwalkar, M. M., Kvasni�ka, P., Lanceri, Livio, Lettenbicher, J., Maki, M., Mammini, P., Mayekar, S. N., Mohanty, G. B., Mohanty, S., Morii, T., Nakamura, K. R., Natkaniec, Z., Negishi, K., Nisar, N. K., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Pilo, F., Profeti, A., Rao, K. K., Rashevskaia, I., Rizzo, G., Rozanska, M., Sandilya, S., Sasaki, J., Sato, N., Schultschik, S., Schwanda, C., Seino, Y., Shimizu, N., Stypula, J., Suzuki, J., Tanaka, S., Tanida, K., Taylor, G. N., Thalmeier, R., Thomas, R., Tsuboyama, T., Uozumi, S., Urquijo, P., Vitale, Lorenzo, Volpi, M., Watanuki, S., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., W�rkner, B., Yamamoto, H., Yin, H., and Yoshinobu, T.
Subjects: Silicon, Computer science, Instrumentation, chemistry.chemical_element, Hardware_PERFORMANCEANDRELIABILITY, Flexible circuits, 01 natural sciences, Silicon vertex detector, 010305 fluids & plasmas, Data acquisition concepts, Detector design and construction technologies and materials, Electronic detector readout concepts (solid-state), Front-end electronics for detector readout, Mathematical Physics, 0103 physical sciences, Singular value decomposition, Hardware_INTEGRATEDCIRCUITS, Data acquisition concept, 010308 nuclear & particles physics, business.industry, Detector design and construction technologies and material, Detector, Electrical engineering, Chip, chemistry, business
Abstract: The Belle II Silicon Vertex Detector comprises four layers of double-sided silicon strip detectors (DSSDs), consisting of ladders with two to five sensors each. All sensors are individually read out by APV25 chips with the Origami chip-on-sensor concept for the central DSSDs of the ladders. The chips sit on flexible circuits that are glued on the top of the sensors. This concept allows a low material budget and an efficient cooling of the chips by a single pipe per ladder. We present the construction of the first SVD ladders and results from precision measurements and electrical tests.
Published: 2016

33. A bonding study toward the quality assurance of Belle-II silicon vertex detector modules

Author: Prafulla Kumar Behera, Satoru Uozumi, T. Horiguchi, Kiyoshi Tanida, S. Bacher, E. Kato, Z. Doležal, Antonio Paladino, H. Park, A. Bozek, John Webb, L. Vitale, Z. Natkaniec, Fabrizio Giulio Luca Pilo, S. Sandilya, S. Bettarini, I. Rashevskaia, K. Adamczyk, B. Bhuyan, D. Červenkov, M. Volpi, Takuya Higuchi, Tariq Aziz, Y. Onuki, R. Thomas, T. Morii, Saraju P. Mohanty, H. Aihara, Thomas Bergauer, C. W. Joo, Gagan Bihari Mohanty, Filippo Bosi, M. M. Kolwalkar, N. K. Nisar, E. L. Barberio, Giulia Casarosa, T. Bilka, S. T. Divekar, C. Schwanda, To. Baroncelli, T. Tsuboyama, J. Wiechczynski, Phillip Urquijo, K. Hara, Noriaki K. Sato, W. Ostrowicz, A. Profeti, Satoshi Tanaka, Dipanwita Dutta, N. Shimizu, G. Batignani, J. Stypula, Eugenio Paoloni, Jun Sasaki, B. Würkner, G. Rizzo, N. Dash, Markus Friedl, S. R. Chendvankar, Steven Williams, L. Lanceri, A. K. Basith, M. Rozanska, K. Nakamura, K. K. Rao, V. Babu, Y. Seino, J. Lettenbicher, Takeo Kawasaki, Shoichi Watanuki, T. Kohriki, Jakub Kandra, R. Thalmeier, F. Forti, F. Buchsteiner, L. Bosisio, I. J. Watson, Corrado Angelini, S. Koike, Peter Kodys, S. N. Mayekar, Christian Irmler, K. Negishi, M. Ceccanti, H. Yin, Hitoshi Yamamoto, P. Mammini, G. N. Taylor, S. Schultschik, T. Yoshinobu, A. Bauer, K. H. Kang, Seema Bahinipati, Peter Kvasnicka, H. B. Jeon, A. Ishikawa, Kang, K. H., Jeon, H. B., Park, H, Uozumi, S., Adamczyk, K., Aihara, H., Angelini, C., Aziz, T., Babu, V., Bacher, S., Bahinipati, S., Barberio, E., Baroncelli, T., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bergauer, T., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, L., Bozek, A., Buchsteiner, F., Casarosa, G., Ceccanti, M., Červenkov, D., Chendvankar, S. R., Dash, N., Divekar, S. T., Doležal, Z., Dutta, D., Forti, F., Friedl, M., Hara, K., Higuchi, T., Horiguchi, T., Irmler, C., Ishikawa, A., Joo, C. W., Kandra, J., Kato, E., Kawasaki, T., Kodyš, P., Kohriki, T., Koike, S., Kolwalkar, M. M., Kvasnička, P., Lanceri, Livio, Lettenbicher, J., Mammini, P., Mayekar, S. N., Mohanty, G. B., Mohanty, S., Morii, T., Nakamura, K. R., Natkaniec, Z., Negishi, K., Nisar, N. K., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Pilo, F., Profeti, A., Rao, K. K., Rashevskaia, I., Rizzo, G., Rozanska, M., Sandilya, S., Sasaki, J., Sato, N., Schultschik, S., Schwanda, C., Seino, Y., Shimizu, N., Stypula, J., Tanaka, S., Tanida, K., Taylor, G. N., Thalmeier, R., Thomas, R., Tsuboyama, T., Urquijo, P., Vitale, Lorenzo, Volpi, M., Watanuki, S., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., Würkner, B., Yamamoto, H., Yin, H., and Yoshinobu, T.
Subjects: Physics, Wire bonding, Nuclear and High Energy Physics, Silicon, business.industry, Instrumentation, Detector, chemistry.chemical_element, Belle-II, DSSD, Origami, Pitch adapter, SVD, Signal, Noise (electronics), Flexible electronics, Signal-to-noise ratio, chemistry, Belle-II, DSSD, Origami, Pitch adapter, SVD, Wire bonding, Instrumentation, Nuclear and High Energy Physics, Optoelectronics, business
Abstract: A silicon vertex detector (SVD) for the Belle-II experiment comprises four layers of double-sided silicon strip detectors (DSSDs), assembled in a ladder-like structure. Each ladder module of the outermost SVD layer has four rectangular and one trapezoidal DSSDs supported by two carbon-fiber ribs. In order to achieve a good signal-to-noise ratio and minimize material budget, a novel chip-on-sensor “Origami” method has been employed for the three rectangular sensors that are sandwiched between the backward rectangular and forward (slanted) trapezoidal sensors. This paper describes the bonding procedures developed for making electrical connections between sensors and signal fan-out flex circuits (i.e., pitch adapters), and between pitch adapters and readout chips as well as the results in terms of the achieved bonding quality and pull force.
Published: 2016

34. Belle-II VXD radiation monitoring and beam abort with sCVD diamond sensors

Author: S. Bettarini, Satoshi Tanaka, W. Ostrowicz, G. N. Taylor, L. Lanceri, K. H. Kang, S. Koike, Peter Kodys, T. Yoshinobu, C. Joo, A. Bauer, Seema Bahinipati, Filippo Bosi, T. Bilka, Fabrizio Giulio Luca Pilo, K. Negishi, G. B. Mohanty, B. Bhuyan, Lorenzo Vitale, Takuya Higuchi, P. Mammini, H. Yin, H. B. Jeon, A. Ishikawa, Peter Kvasnicka, Noriaki K. Sato, M. Volpi, B. Würkner, Tariq Aziz, Thomas Bergauer, I. J. Watson, T. Kawasaki, S. N. Mayekar, S. Schultschik, Giulia Casarosa, N. K. Nisar, S. T. Divekar, Y. Seino, Prafulla Kumar Behera, K. Hara, G. Rizzo, A. Profeti, Shoichi Watanuki, Phillip Urquijo, F. Forti, S. Bacher, Hitoshi Yamamoto, R. Thalmeier, John Webb, Steven Williams, K. Nakamura, Jakub Kandra, H. Park, A. Bozek, Saraju P. Mohanty, Y. Onuki, Jun Sasaki, L. Bosisio, I. Rashevskaya, V. Babu, R. Thomas, T. Morii, Hiroaki Aihara, G. Batignani, J. Stypula, Satoru Uozumi, F. Buchsteiner, C. Schwanda, T. Horiguchi, E. L. Barberio, Eugenio Paoloni, Markus Friedl, Antonio Paladino, M. M. Kolwalkar, Z. Natkaniec, T. Tsuboyama, J. Wiechczynski, D. Červenkov, K. Adamczyk, M. Ceccanti, S. R. Chendvankar, K. K. Rao, N. Dash, A. K. Basith, Corrado Angelini, T. Kohriki, M. Rozanska, Christian Irmler, Kiyoshi Tanida, Dipanwita Dutta, J. Lettenbicher, N. Shimizu, E. Kato, Z. Doležal, S. Sandilya, To. Baroncelli, Adamczyk, K., Aihara, H., Angelini, C., Aziz, T., Babu, V., Bacher, S., Bahinipati, S., Barberio, E., Baroncelli, T., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bergauer, T., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, L., Bozek, A., Buchsteiner, F., Casarosa, G., Ceccanti, M., Červenkov, D., Chendvankar, S. R., Dash, N., Divekar, S. T., Doležal, Z., Dutta, D., Forti, F., Friedl, M., Hara, K., Higuchi, T., Horiguchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kandra, J., Kang, K. H., Kato, E., Kawasaki, T., Kodyš, P., Kohriki, T., Koike, S., Kolwalkar, M. M., Kvasnička, P., Lanceri, Livio, Lettenbicher, J., Mammini, P., Mayekar, S. N., Mohanty, G. B., Mohanty, S., Morii, T., Nakamura, K. R., Natkaniec, Z., Negishi, K., Nisar, N. K., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Pilo, F., Profeti, A., Rashevskaya, I., Rao, K. K., Rizzo, G., Rozanska, M., Sandilya, S., Sasaki, J., Sato, N., Schultschik, S., Schwanda, C., Seino, Y., Shimizu, N., Stypula, J., Tanaka, S., Tanida, K., Taylor, G. N., Thalmeier, R., Thomas, R., Tsuboyama, T., Uozumi, S., Urquijo, P., Vitale, Lorenzo, Volpi, M., Watanuki, S., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., Würkner, B., Yamamoto, H., Yin, H., and Yoshinobu, T.
Subjects: Nuclear and High Energy Physics, Instrumentation, Radiation, engineering.material, Optics, Radiation hardne, Radiation hardening, Physics, Radiation hardness, Luminosity (scattering theory), business.industry, Detector, Diamond, CVD diamond sensor, Beam radiation monitoring, Diamond radiation detector, Diamond radiation detectors, CVD diamond sensors, engineering, Optoelectronics, Radiation monitoring, business, Beam (structure)
Abstract: The Belle-II VerteX Detector (VXD) has been designed to improve the performances with respect to Belle and to cope with an unprecedented luminosity of 8 × 10 35 cm − 2 s − 1 achievable by the SuperKEKB. Special care is needed to monitor both the radiation dose accumulated throughout the life of the experiment and the instantaneous radiation rate, in order to be able to promptly react to sudden spikes for the purpose of protecting the detectors. A radiation monitoring and beam abort system based on single-crystal diamond sensors is now under an active development for the VXD. The sensors will be placed in several key positions in the vicinity of the interaction region. The severe space limitations require a challenging remote readout of the sensors.
Published: 2016

35. Belle II silicon vertex detector

Author: C. W. Joo, K. Adamczyk, N. Dash, A. K. Basith, M. Rozanska, J. Suzuki, S. Bacher, J. Lettenbicher, V. Babu, Ti. Baroncelli, R. Thalmeier, Jun Sasaki, T. Yoshinobu, Masatoshi Maki, Takeo Higuchi, A. Bozek, H. Yin, B. Würkner, T. Kohriki, Filippo Bosi, S. N. Mayekar, Y. Onuki, P. Mammini, Kazuhiko Hara, T. Bilka, Seema Bahinipati, R. Thomas, T. Morii, Antonio Paladino, Toru Tsuboyama, J. Wiechczynski, K. Nakamura, Tariq Aziz, Y. Seino, Satoru Uozumi, G. Batignani, Peter Kvasnicka, J. Stypula, Jakub Kandra, Fabrizio Giulio Luca Pilo, E. L. Barberio, S. Schultschik, N. K. Nisar, Takeo Kawasaki, Shoichi Watanuki, F. Forti, Eugenio Paoloni, Markus Friedl, L. Bosisio, John Webb, To. Baroncelli, I. Rashevskaya, T. Horiguchi, L. Vitale, G. N. Taylor, H. Park, K. H. Kang, Z. Natkaniec, Giulia Casarosa, H. B. Jeon, Dipanwita Dutta, B. Bhuyan, Kiyoshi Tanida, A. Ishikawa, S. T. Divekar, W. Ostrowicz, F. Buchsteiner, N. Shimizu, M. Volpi, Phillip Urquijo, A. Bauer, M. Ceccanti, Thomas Bergauer, Satoshi Tanaka, I. J. Watson, D. Červenkov, Hitoshi Yamamoto, K. Enami, N. Sato, L. Lanceri, S. Koike, G. Rizzo, Peter Kodys, E. Kato, H. Aihara, S. Bettarini, Steven Williams, Saraju P. Mohanty, S. Sandilya, C. Schwanda, K. Negishi, Z. Doležal, Gagan Bihari Mohanty, Corrado Angelini, A. Profeti, Christian Irmler, Prafulla Kumar Behera, S. R. Chendvankar, K. K. Rao, and M. M. Kolwalkar
Subjects: Nuclear and High Energy Physics, APV25 chip, Belle II, CO2 cooling, Origami assembly, SVD, Instrumentation, Physics::Instrumentation and Detectors, Hadron, Tracking (particle physics), 01 natural sciences, Microstrip, law.invention, Optics, law, 0103 physical sciences, Charm (quantum number), 010306 general physics, Collider, Physics, 010308 nuclear & particles physics, business.industry, Charged particle, High Energy Physics::Experiment, Subatomic particle, business
Abstract: The Belle II experiment at the SuperKEKB collider in Japan is designed to indirectly probe new physics using approximately 50 times the data recorded by its predecessor. An accurate determination of the decay-point position of subatomic particles such as beauty and charm hadrons as well as a precise measurement of low-momentum charged particles will play a key role in this pursuit. These will be accomplished by an inner tracking device comprising two layers of pixelated silicon detector and four layers of silicon vertex detector based on double-sided microstrip sensors. We describe herein the design, prototyping and construction efforts of the Belle-II silicon vertex detector.
Published: 2016

36. Belle II SVD ladder assembly procedure and electrical qualification

Author: K. K. Rao, M. M. Kolwalkar, B. Würkner, P. Mammini, Giulia Casarosa, S. T. Divekar, Prafulla Kumar Behera, N. K. Nisar, Phillip Urquijo, Z. Natkaniec, Kiyoshi Tanida, C. Joo, S. Bettarini, K. Negishi, D. Červenkov, E. Kato, Z. Doležal, John Webb, L. Vitale, Hiroaki Aihara, G. Batignani, G. N. Taylor, Y. Seino, J. Stypula, S. Sandilya, Satoshi Tanaka, Takeo Kawasaki, Shoichi Watanuki, F. Forti, A. Profeti, T. Aziz, T. Kohriki, Hitoshi Yamamoto, G. B. Mohanty, R. Thalmeier, K. Adamczyk, Antonio Paladino, S. Bahinipati, Federico Pilo, Jun Sasaki, Christian Irmler, F. Buchsteiner, S. N. Mayekar, G. Rizzo, Takuya Higuchi, K. Nakamura, Varghese Babu, Jakub Kandra, N. Dash, H. Yin, D. Dutta, A. K. Basith, L. Bosisio, H. B. Jeon, M. Rozanska, Noriaki K. Sato, S. Koike, A. Ishikawa, S. Bacher, Peter Kodys, J. Lettenbicher, Saraju P. Mohanty, T. Yoshinobu, M. Volpi, N. Shimizu, C. Schwanda, T. Tsuboyama, H. Park, J. Wiechczynski, A. Bozek, C. Angelini, To. Baroncelli, I. Rashevskaya, I. J. Watson, Satoru Uozumi, Eugenio Paoloni, Markus Friedl, S. R. Chendvankar, T. Horiguchi, B. Bhuyan, Thomas Bergauer, K. Hara, Y. Onuki, R. Thomas, T. Morii, E. L. Barberio, Peter Kvasnicka, K. H. Kang, A. Bauer, S. Schultschik, Steven Williams, M. Ceccanti, W. Ostrowicz, L. Lanceri, Filippo Bosi, T. Bilka, Adamczyk, K., Aihara, H., Angelini, C., Aziz, T., Babu, Varghese, Bacher, S., Bahinipati, S., Barberio, E., Baroncelli, T., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bergauer, T., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, L., Bozek, A., Buchsteiner, F., Casarosa, G., Ceccanti, M., Červenkov, D., Chendvankar, S. R., Dash, N., Divekar, S. T., Doležal, Z., Dutta, D., Forti, F., Friedl, M., Hara, K., Higuchi, T., Horiguchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kandra, J., Kang, K. H., Kato, E., Kawasaki, T., Kodyš, P., Kohriki, T., Koike, S., Kolwalkar, M. M., Kvasnička, P., Lanceri, Livio, Lettenbicher, J., Mammini, P., Mayekar, S. N., Mohanty, G. B., Mohanty, S., Morii, T., Nakamura, K. R., Natkaniec, Z., Negishi, K., Nisar, N. K., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Pilo, F., Profeti, A., Rao, K. K., Rashevskaya, I., Rizzo, G., Rozanska, M., Sandilya, S., Sasaki, J., Sato, N., Schultschik, S., Schwanda, C., Seino, Y., Shimizu, N., Stypula, J., Tanaka, S., Tanida, K., Taylor, G. N., Thalmeier, R., Thomas, R., Tsuboyama, T., Uozumi, S., Urquijo, P., Vitale, Lorenzo, Volpi, M., Watanuki, S., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., Würkner, B., Yamamoto, H., Yin, H., and Yoshinobu, T.
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, media_common.quotation_subject, Detector, Hinge, Double sided silicon strip detector, Asymmetry, Belle II, Origami, Silicon vertex detector, Instrumentation, Vertex (geometry), Computational science, visual_art, Singular value decomposition, Electronic component, visual_art.visual_art_medium, CP violation, High Energy Physics::Experiment, Vertex detector, media_common
Abstract: The Belle II experiment at the SuperKEKB asymmetric e + e − collider in Japan will operate at a luminosity approximately 50 times larger than its predecessor (Belle). At its heart lies a six-layer vertex detector comprising two layers of pixelated silicon detectors (PXD) and four layers of double-sided silicon microstrip detectors (SVD). One of the key measurements for Belle II is time-dependent CP violation asymmetry, which hinges on a precise charged-track vertex determination. Towards this goal, a proper assembly of the SVD components with precise alignment ought to be performed and the geometrical tolerances should be checked to fall within the design limits. We present an overview of the assembly procedure that is being followed, which includes the precision gluing of the SVD module components, wire-bonding of the various electrical components, and precision three dimensional coordinate measurements of the jigs used in assembly as well as of the final SVD modules.
Published: 2015

37. Belle II Silicon Vertex Detector

Author: C. La Licata, I. J. Watson, N. Sato, Takeo Higuchi, G. De Pietro, Saraju P. Mohanty, Markus Friedl, C. Schwanda, Corrado Angelini, S. R. Chendvankar, K. K. Rao, C. W. Joo, Jakub Kandra, F. Forti, T. Yoshinobu, K. Adamczyk, H. Yin, Giulia Casarosa, Rakesh Kumar, S. T. Divekar, Phillip Urquijo, K. H. Kang, L. Bosisio, Dipanwita Dutta, N. Shimizu, Christian Irmler, Fabrizio Giulio Luca Pilo, V. Babu, B. Bhuyan, J. Libby, Tariq Aziz, A. Bauer, N. Kambara, M. M. Kolwalkar, Thomas Bergauer, Katsuro Nakamura, T. Lueck, A. Paladino, Satoru Uozumi, G. Batignani, J. Stypula, P. K. Resmi, To. Baroncelli, M. Watanabe, E. Paoloni, S. Koike, Peter Kodys, F. Buchsteiner, H. Aihara, T. Kohriki, T. Horiguchi, Ti. Baroncelli, R. Thalmeier, Z. Doležal, H. Park, D. Červenkov, S. N. Mayekar, L. Zani, S. Bacher, H. B. Jeon, L. Bulla, Y. Onuki, A. Ishikawa, Z. Natkaniec, B. Würkner, John Webb, L. Vitale, R. Thomas, P. Mammini, W. Kun, Gagan Bihari Mohanty, Prafulla Kumar Behera, Satoshi Tanaka, Steven Williams, Hitoshi Yamamoto, E. L. Barberio, A. Profeti, N. Dash, A. K. Basith, S. Bettarini, M. Rozanska, J. Lettenbicher, T. Morii, J. Suzuki, Y. Seino, Filippo Bosi, T. Bilka, G. Rizzo, Shoichi Watanuki, G. Caria, W. Ostrowicz, A. Bozek, L. Lanceri, Jun Sasaki, J. Wiechczynski, G. N. Taylor, Masatoshi Maki, S. Schultschik, I. Rashevskaya, Seema Bahinipati, Peter Kvasnicka, Toru Tsuboyama, T. Kawasaki, Kazuhiko Hara, M. Ceccanti, Dutta, D., Adamczyk, K., Aihara, H., Angelini, C., Aziz, T., Babu, V., Bacher, S., Bahinipati, S., Barberio, E., Baroncelli, Ti., Baroncelli, To., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bergauer, T., Bettarini, S., Bhuyan, B., Bilka, T., Bosi, F., Bosisio, L., Bozek, A., Buchsteiner, F., Bulla, L., Caria, G., Casarosa, G., Ceccanti, M., Cervenkov, D., Chendvankar, S. R., Dash, N., De Pietro, G., Divekar, S. T., Doležal, Z., Forti, F., Friedl, M., Hara, K., Higuchi, T., Horiguchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kandra, J., Kambara, N., Kang, K. H., Kawasaki, T., Kodyš, P., Kohriki, T., Koike, S., Kolwalkar, M. M., Kumar, R., Kun, W., Kvasnicka, P., La Licata, C., Lanceri, L., Lettenbicher, J., Libby, J., Lueck, T., Maki, M., Mammini, P., Mayekar, S. N., Mohanty, G. B., Mohanty, S., Morii, T., Nakamura, K. R., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Pilo, F., Profeti, A., Rashevskaya, I., Rao, K. K., Rizzo, G., Resmi, P. K., Rozanska, M., Sasaki, J., Sato, N., Schultschik, S., Schwanda, C., Seino, Y., Shimizu, N., Stypula, J., Suzuki, J., Tanaka, S., Taylor, G. N., Thalmeier, R., Thomas, R., Tsuboyama, T., Uozumi, S., Urquijo, P., Vitale, L., Watanuki, S., Watanabe, M., Watson, I. J., Webb, J., Wiechczynski, J., Williams, S., Wrkner, B., Yamamoto, H., Yin, H., Yoshinobu, T., and Zani, L.
Subjects: Particle physics, Vertex (computer graphics), Physics::Instrumentation and Detectors, Physics beyond the Standard Model, 01 natural sciences, Microstrip, law.invention, law, Particle tracking detectors, 0103 physical sciences, Solid state detectors, 010306 general physics, Collider, Instrumentation, Si microstrip and pad detector, Mathematical Physics, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Particle tracking detectors (Solid-state detectors), Si microstrip and pad detectors, Detector, Particle tracking detector, Semiconductor detector, CP violation, High Energy Physics::Experiment, Solid state detector
Abstract: The Belle II experiment at the SuperKEKB asymmetric energy e+e− collider in KEK, Japan will operate at an instantaneous luminosity 40 times larger than that of its predecessor, Belle. It is built with an aim of collecting a huge amount of data (50 ab−1 by 2025) for precise CP violation measurements and new physics search. Thus, we need an accurate vertex determination and reconstruction of low momentum tracks which will be achieved with the help of vertex detector (VXD). The Belle II VXD consists of two layers of DEPFET pixels (`Pixel Detector') and four layers of double-sided silicon microstrip sensors (`Silicon Vertex Detector'), assembled over carbon fibre ribs. In this paper, we discuss about the Belle II Silicon Vertex Detector, especially its design and key features; we also present its module (`ladder') assembly and testing procedures.
Published: 2017

38. The monitoring system of the Belle II Vertex Detector

Author: P. Mammini, S. Bacher, P. K. Resmi, Lorenzo Vitale, Takuya Higuchi, S. Koike, S. Schultschik, M. M. Kolwalkar, Peter Kodys, H. Park, A. Bozek, C. La Licata, J. Suzuki, H. B. Jeon, Rakesh Kumar, A. Ishikawa, I. J. Watson, Seema Bahinipati, F. Buchsteiner, Filippo Bosi, B. Bhuyan, B. Würkner, Peter Kvasnicka, J. Libby, Hitoshi Yamamoto, Giulia Casarosa, S. T. Divekar, T. Tsuboyama, Phillip Urquijo, Thomas Bergauer, S. Bettarini, Y. Seino, J. Wiechczynski, G. N. Taylor, T. Bilka, C. W. Joo, N. Dash, K. Hara, Takeo Kawasaki, Shoichi Watanuki, Ti. Baroncelli, L. Zani, A. K. Basith, W. Ostrowicz, S. R. Chendvankar, M. Rozanska, J. Lettenbicher, R. Thalmeier, Noriaki K. Sato, John Webb, Jun Sasaki, T. Horiguchi, Z. Doležal, K. K. Rao, D. Giuressi, Prafulla Kumar Behera, K. Nakamura, Y. Onuki, Corrado Angelini, L. Lanceri, R. Thomas, G. Rizzo, T. Morii, T. Kohriki, S. N. Mayekar, F. Forti, W. Kun, Noritaka Shimizu, M. Watanabe, K. Adamczyk, Jakub Kandra, N. Kambara, T. Yoshinobu, Masatoshi Maki, E. L. Barberio, To. Baroncelli, I. Rashevskaya, Satoshi Tanaka, A. Paladino, H. Yin, Christian Irmler, L. Bosisio, G. Batignani, M. Ceccanti, J. Stypula, L. Bulla, A. Profeti, T. Lueck, G. Cautero, Fabrizio Giulio Luca Pilo, G. Caria, Z. Natkaniec, Dipanwita Dutta, G. B. Mohanty, D. Červenkov, Tariq Aziz, H. Aihara, K. H. Kang, Saraju P. Mohanty, S. Uozumi, A. Bauer, E. Paoloni, C. Schwanda, G. De Pietro, Markus Friedl, Steven Williams, and V. Babu
Subjects: Physics, Luminosity (scattering theory), belle ii, Multidisciplinary, business.industry, vertex detector, DESY, Monitoring system, Solid state detector, law.invention, Semiconductor detector, Nuclear physics, silicon vertex detector, law, Radiation monitoring, Vertex detector, Nuclear medicine, business, Collider, silicon detector
Abstract: The Belle II VerteX Detector (VXD) is a 6 layers silicon tracker device that will cope with an unprecedented luminosity of 8×1035 cm−2s−1 achievable by the new SuperKEKB e+e− collider, at the KEK laboratory (Tsukuba, Japan). All environment parameters such as temperature, humidity and radiation levels, must be constantly monitored and under certain conditions action must be promptly taken, such as interlocking the power supply or delivering an abort signal to the SuperKEKB collider. In this contribution we describe the Belle II VXD monitoring system. We also present the first results of the temperature and humidity system commissioned in a Beam Test at DESY in April 2016 and the preliminary results of the radiation monitoring achieved with a prototype system during the first SuperKEKB commissioning phase at KEK in February-June 2016.

39. Operational experience and commissioning of the Belle II vertex detector

Author: P. Mammini, S. Bacher, AL Virto, L. Germic, Norbert Wermes, S. Reiter, H. Yin, Y. Soloviev, H. Park, T. Czank, A. Bozek, Oscar Alonso, P.A. Fischer, T. Lueck, Gerhard Liemann, T. Higuchi, N. Kambara, D. Klose, B. Spruck, M. Boronat, W. Kühn, J. S. Lange, JG Sanchez, S. Bettarini, A. Paladino, S. Skambraks, T. Tsuboyama, M. Hoek, D. Esperante, Ladislav Andricek, F. Mueller, W. Ostrowicz, D. Getzkow, Mohammed Albalawi, U. Packheiser, M. Fras, K. Nakamura, J. Wiechczynski, R. Thalmeier, Mukesh Kumar, P. K. Resmi, J. Libby, Jakub Kandra, H. Schreeck, B. Bhuyan, Steven Williams, Prafulla Kumar Behera, S. Rummel, D. Kittlinger, A. Frey, H. Nakayama, S. Vogt, S. Koike, Noriaki K. Sato, D. Moya, B. Scavino, S. N. Mayekar, H. Tanigawa, Christian Irmler, I. Konorov, Peter Kodys, H. Aihara, D. Münchow, Phillip Urquijo, Agnese Martini, L. Lanceri, L. Bosisio, Y. Onuki, Allen Caldwell, F. Müller, C. H. Wang, C. Camien, J. Zhao, Juan Fuster, K. H. Kang, P. Wieduwilt, J. Suzuki, I. Rashevskaya, L. Gioi, F. Poblotzki, B. Gobbo, K. Lalwani, C. Schwanda, C. W. Joo, M. Hensel, T. Kuhr, Y. B. Li, V. Babu, Martin Ritter, Dmytro Levit, R. Blanco, S. Paul, K. Wan, P. Kapusta, M. Kaleta, D. Červenkov, Tariq Aziz, T. Morii, Seema Bahinipati, K. Hara, B. Deschamps, U. Leis, S. Mccarney, G. Casarosa, M. Schnecke, Filippo Bosi, A. Bauer, G. N. Taylor, C. Sfienti, I. Jaegle, Ivan Peric, K. Gadow, C. Niebuhr, Shoichi Watanuki, M. Gabriel, L. Santelj, T. Bilka, R. Sedlmeyer, E. L. Barberio, R. Ayad, M. Ceccanti, G. Rizzo, Frank Simon, L. Zani, Gagan Bihari Mohanty, Jelena Ninkovic, H. Windel, M. De Nuccio, B. Kisielewski, M. Watanabe, F. Abudinén, J. C. Dingfelder, Hans Krüger, Valerio Bertacchi, K. Lautenbach, V. Chekelian, Jihwa Lee, A. Profeti, Tomasz Hemperek, S. Krivokuca, Shih-Chang Lee, Michael Ritzert, Thomas Gessler, Z. Doležal, Melissa K. Takahashi, Marcel Vos, Rajesh Kumar, E. Paoloni, Satoshi Tanaka, T. Kohriki, G. Batignani, B. Paschen, F. Buchsteiner, H. Ye, H. G. Moser, K. K. Rao, I. J. Watson, M. Heck, Angel Dieguez, Peter Kvasnicka, Markus Friedl, J. Stypula, S. Schultschik, L. Macharski, Gerhard Schaller, C. Wessel, I. Komarov, U. Gebauer, Florian Schopper, To. Baroncelli, K. Prasanth, R. Richter, Y. Bai, J.A.M. Grimaldo, Benjamin Schwenker, Z. Natkaniec, C. Kiesling, Ti. Baroncelli, Carlos Lacasta, Carlos Marinas, G. Caria, P. Leitl, P. Ahlburg, Jun Sasaki, K. Ackermann, R. Stever, U. Stolzenberg, H. B. Jeon, Ivan Vila, A. Ishikawa, J. C. Webb, L. Vitale, C. Koffmane, F. Lütticke, C. La Licata, Zhiyong Liu, Doyen Sahoo, P. Gomis, N. Dash, F. Forti, A. K. Basith, M. Rozanska, E. Tafelmayer, and A. Rabusov
Subjects: High energy, Photon, Physics::Instrumentation and Detectors, vertex detector, Synchrotron radiation, 01 natural sciences, 7. Clean energy, 030218 nuclear medicine & medical imaging, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, 0103 physical sciences, silicon detector, Engineering & allied operations, Physics, belle ii, silicon vertex detector, 010308 nuclear & particles physics, Single beam, Detector, Particle physics, Radiació sincrotrònica, Time resolution, Low noise, Physics::Accelerator Physics, High Energy Physics::Experiment, Vertex detector, ddc:620, Física de partícules
Abstract: The Belle II experiment has completed the Phase 2, with a subset of the final Belle II vertex detector comprising six layers with a single ladder per layer. First physics collisions have been successfully recorded at the end of April 2018 and and a total luminosity of 500 pb−1 have been collected for physics studies. All BEAST II detectors were operational and provided valuable online feedback for machine commissioning and safe operation of Belle II during Phase 2. SVD key operation features like signal to noise ratio and hit time resolution are within or exceeding TDR expectation. PXD demonstrated stable operation of four half-ladders with low noise and an excellent signal to noise ratio. Background from soft photons in the energy range 7-10 keV was observed in the PXD, FANGS and radio-chromic foils and is in qualitative agreement with simulation of synchrotron radiation. Single beam background from the low energy ring is in reasonable agreement with MC prediction within a factor 3-10 for SVD and PXD while the the background from the high energy ring is underpredicted. The observed HER and LER background rates are much more similar than predicted and the overall sum of backgrounds is about 10 times too high for efficient operation of the VXD at full luminosity. Ways for mitigating the backgrounds by tuning the accelerator and installing additional collimators are currently under study. The Phase 2 run confirmed that the full VXD could be safely installed for the early part of Phase 3 in March 2019.

40. The silicon VerteX Detector of the Belle II experiment

Author: Giulia Casarosa, S. T. Divekar, Phillip Urquijo, Ti. Baroncelli, H. B. Jeon, A. Ishikawa, Antonio Paladino, N. Dash, F. Forti, P. Mammini, Takeo Higuchi, G. De Pietro, G. Batignani, Satoshi Tanaka, J. Stypula, T. Horiguchi, S. Schultschik, Markus Friedl, C. Joo, Dipanwita Dutta, S. Bettarini, F. Buchsteiner, I. J. Watson, Soumya D. Mohanty, S. Koike, Peter Kodys, B. Bhuyan, K. Nakamura, Prafulla Kumar Behera, Zdenek Dolezal, Jakub Kandra, A. Bauer, K. Negishi, L. Bosisio, Thomas Bergauer, T. Kawasaki, K. Adamczyk, H. Aihara, Gagan Bihari Mohanty, K. Hara, E. Paoloni, H. Yin, T. Kohriki, V. Babu, Noriaki K. Sato, A. Profeti, M. M. Kolwalkar, S. Bacher, Y. Onuki, R. Thomas, L. Bulla, G. N. Taylor, W. Ostrowicz, T. Morii, H. Yamamoto, H. Park, A. Bozek, Kiyoshi Tanida, Peter Kvasnicka, Fabrizio Giulio Luca Pilo, E. L. Barberio, D. Červenkov, K. H. Kang, S. R. Chendvankar, E. Kato, L. Zani, J. Suzuki, K. K. Rao, L. Lanceri, T. Lueck, N. K. Nisar, T. Yoshinobu, Masatoshi Maki, Steven Williams, R. Thalmeier, S. N. Mayekar, Tariq Aziz, Seema Bahinipati, G. Rizzo, Filippo Bosi, M. Ceccanti, T. Bilka, Jun Sasaki, B. Würkner, Y. Seino, Shoichi Watanuki, J. C. Webb, L. Vitale, Noritaka Shimizu, S. Uozumi, C. Schwanda, I. Rashevskaia, A. K. Basith, M. Rozanska, J. Lettenbicher, T. Tsuboyama, J. Wiechczynski, Z. Natkaniec, To. Baroncelli, Corrado Angelini, and Christian Irmler
Subjects: Analog signal, KEKB, Data acquisition, Parasitic capacitance, business.industry, Computer science, Bandwidth (signal processing), Computer data storage, Detector, Tracking system, business, Computer hardware
Abstract: The Belle II experiment at the SuperKEKB flavour factory will operate at an unprecedented lu- minosity of 8×10^35cm−2s−1, which is about 40 times larger than its predecessor KEKB. The VerteX Detector is composed of a two-layer DEPFET PiXel Detector (PXD) and a four-layer double sided silicon strip detector (SVD). To achieve a precise vertex position determination and an excellent low-momentum tracking, even under the high background and high trigger rate of 10kHz, the SVD employs several innovative techniques. In order to reduce the occupancy and to minimise the parasitic capacitance in the signal path, 1748 APV25 ASIC chips, which read-out signals from 224k strip channels, are directly mounted on the ladders with the novel Origami concept. The analog signals from APV25 are digitised by an FADC system and sent to the central DAQ. An online tracking system based on SVD hits provides the Regions Of Interests to PXD in order to reduce the data size to achieve the required bandwidth and data storage space. In this talk, we present the design principles and construction status of the Belle II SVD, together with preliminary results on sensors performances.

41. Performance studies of the Belle II Silicon Vertex Detector with data taken at the DESY test beam in April 2016

Author: G. B. Mohanty, H. B. Jeon, Noritaka Shimizu, K. Adamczyk, T. Bilka, A. Ishikawa, Takuya Higuchi, Tariq Aziz, S. Bettarini, C. W. Joo, A. Profeti, P. K. Resmi, T. Horiguchi, Benjamin Schwenker, S. Koike, Prafulla Kumar Behera, John Webb, L. Vitale, Z. Natkaniec, P. Mammini, B. Bhuyan, B. Würkner, J. Lettenbichler, J. Libby, Z. Doležal, V. Babu, F. Pilo, M. Ceccanti, S. R. Chendvankar, R. Thalmeier, D. Červenkov, Y. Seino, Takeo Kawasaki, Shoichi Watanuki, T. Yoshinobu, T. Tsuboyama, A. Martini La Licata, U. Stolzenberg, S. N. Mayekar, Corrado Angelini, Masatoshi Maki, H. Yin, G. Caria, W. Ostrowicz, Thomas Bergauer, J. Wiechczynski, K. Hara, F. Bosi, Dipanwita Dutta, K. K. Rao, G. Batignani, P. Kodyč, J. Stypula, G. Casarosa, F. Forti, S. Bacher, H. Aihara, Jun Sasaki, G. Rizzo, L. Lanceri, N. Kambara, Christian Irmler, Ti. Baroncelli, G. N. Taylor, A. Paladino, S. T. Divekar, Phillip Urquijo, H. Park, A. Bozek, F. Buchsteiner, L. Zani, Steven Williams, T. Lück, M. Watanabe, To. Baroncelli, I. Rashevskaya, Hitoshi Yamamoto, T. Kohriki, K. Nakamura, M. M. Kolwalkar, Jakub Kandra, N. Dash, Satoshi Tanaka, A. K. Basith, M. Rozanska, L. Bulla, L. Bosisio, Noriaki K. Sato, Y. Onuki, R. Thomas, T. Morii, W. Kun, E. L. Barberio, Saraju P. Mohanty, S. Uozumi, J. Suzuki, C. Schwanda, Seema Bahinipati, C. La Licata, I. J. Watson, G. De Pietro, Markus Friedl, Peter Kvasnicka, S. Schultschik, Rakesh Kumar, K. H. Kang, A. Bauer, and E. Paoloni
Subjects: Physics, Vertex (computer graphics), belle ii, Silicon, 010308 nuclear & particles physics, vertex detector, Detector, chemistry.chemical_element, DESY, 7. Clean energy, 01 natural sciences, 030218 nuclear medicine & medical imaging, Semiconductor detector, Nuclear physics, silicon vertex detector, 03 medical and health sciences, 0302 clinical medicine, chemistry, Test beam, 0103 physical sciences, Image resolution, silicon detector, Beam (structure)
Abstract: Belle II is a multipurpose detector currently under construction which will be operated at the next generation B-factory SuberKEKB in Japan. Its main devices for the vertex reconstruction are the Silicon Vertex Detector (SVD) and the Pixel Detector (PXD). In April 2016 a sector of the Belle II SVD and PXD have been tested in a beam of high energetic electrons at the test beam facility at DESY Hamburg (Germany). We report here the results for the hit efficiency estimation and the measurement of the resolution for the Belle II silicon vertex etector. We find that the hit efficiencies are on average above 99.5% and that the measured resolution is within the expectations.

42. Machine learning: Hit time finding with a neural network

Author: S. Bacher, H. B. Jeon, A. Ishikawa, W. Ostrowicz, Z. Doležal, H. Park, A. Bozek, Doyen Sahoo, S. Schultschik, M. Kaleta, G. Batignani, Markus Friedl, J. Stypula, M. Ceccanti, N. Kambara, L. Lanceri, B. Bhuyan, A. K. Basith, Prafulla Kumar Behera, A. Paladino, P. Mammini, G. N. Taylor, M. Rozanska, Christian Irmler, Noriaki K. Sato, Jun Sasaki, K. Nakamura, T. Lueck, Filippo Bosi, C. Joo, K. Hara, K. H. Kang, P. K. Resmi, K. K. Rao, T. Bilka, Jakub Kandra, M. Watanabe, Shih-Chang Lee, S. Koike, Mukesh Kumar, H. Aihara, G. Casarosa, Peter Kodys, C. La Licata, J. Suzuki, M. De Nuccio, H. Yin, Steven Williams, L. Bosisio, A. Bauer, I. Rashevskaya, T. Czank, K. Prasanth, L. Zani, Valerio Bertacchi, N. Dash, Tariq Aziz, Jihwa Lee, H. Tanigawa, G. Caria, Rajesh Kumar, J. Libby, F. Forti, T. Kohriki, E. Paoloni, G. B. Mohanty, Seema Bahinipati, Satoshi Tanaka, T. Higuchi, J. C. Webb, L. Vitale, Ti. Baroncelli, Z. Natkaniec, Shoichi Watanuki, F. Buchsteiner, I. J. Watson, T. Tsuboyama, J. Wiechczynski, G. Rizzo, J.A.M. Grimaldo, I. Komarov, B. Gobbo, K. Lalwani, Phillip Urquijo, C. Schwanda, R. Thalmeier, S. N. Mayekar, Peter Kvasnicka, S. Bettarini, Y. Onuki, T. Morii, W. Kun, E. L. Barberio, Agnese Martini, To. Baroncelli, A. Profeti, and D. Červenkov
Subjects: belle ii, Artificial neural network, Event (computing), Computer science, vertex detector, Real-time computing, Signal, silicon vertex detector, Amplitude, High energy accelerator, Field-programmable gate array, silicon detector, Reliability (statistics)
Abstract: At the High Energy Accelerator Research Organization (KEK) in Tsukuba, Japan, the double-sided silicon strip sub-detector of the Belle II experiment is read out by 1748 APV25 chips. FPGAs perform several calculations on the digitized signals. One of them will be "Hit Time Finding": the determination of the time and amplitude of the signal peaks of each event in real time using pre-programmed neural networks. This work analyses the possibility, precision and reliability of these calculations depending on various parameters.

43. Construction and quality assurance of the Belle II silicon vertex detector

Author: Z. Natkaniec, J. Libby, R. Thalmeier, L. Zani, S. N. Mayekar, K. Nakamura, S. Bettarini, Markus Friedl, Gagan Bihari Mohanty, Shoichi Watanuki, H. Tanigawa, Jakub Kandra, Noriaki K. Sato, Tariq Aziz, A. Profeti, Seema Bahinipati, L. Bosisio, Z. Doležal, Christian Irmler, C. La Licata, M. De Nuccio, H. Yin, G. Rizzo, H. B. Jeon, A. Ishikawa, To. Baroncelli, Shih-Chang Lee, J. C. Webb, L. Vitale, H. Aihara, S. Bacher, Phillip Urquijo, T. Czank, A. Paladino, G. N. Taylor, F. Buchsteiner, I. J. Watson, I. Komarov, Doyen Sahoo, H. Park, A. Bozek, G. Batignani, Jihwa Lee, Y. B. Li, J.A.M. Grimaldo, J. Stypula, G. Casarosa, T. Kohriki, Y. Onuki, B. Gobbo, B. Bhuyan, K. Lalwani, C. Schwanda, K. H. Kang, Ti. Baroncelli, T. Morii, Agnese Martini, Toru Tsuboyama, P. K. Resmi, C. Joo, Valerio Bertacchi, Mukesh Kumar, Peter Kodys, E. L. Barberio, Peter Kvasnicka, A. Bauer, Steven Williams, S. Schultschik, D. Červenkov, K. Hara, T. Lueck, J. Wiechczynski, Rajesh Kumar, E. Paoloni, A. K. Basith, J. Suzuki, I. Rashevskaya, Satoshi Tanaka, M. Rozanska, M. Kaleta, P. Mammini, M. Ceccanti, T. Higuchi, Jun Sasaki, K. Prasanth, G. Caria, K. Wan, Filippo Bosi, Prafulla Kumar Behera, T. Bilka, M. Watanabe, W. Ostrowicz, L. Lanceri, N. Dash, F. Forti, and K. K. Rao
Subjects: Physics, Particle physics, Luminosity (scattering theory), Interaction point, Pixel, Physics::Instrumentation and Detectors, business.industry, vertex detector, Detector, law.invention, silicon vertex detector, law, visual_art, Electronic component, visual_art.visual_art_medium, Belle II, CP violation, silicon detector, High Energy Physics::Experiment, business, Collider, Quality assurance
Abstract: The Belle II experiment, which is situated at the interaction point of the SuperKEKB e+e− collider at KEK, Tsukuba, Japan, is expected to collect data corresponding to an integrated luminosity of 50 ab−1. This data set will be sensitive to beyond-the-standard-model physics via precision measurements and searches for very rare decays. At its heart lies a six-layer vertex detector consisting of two layers of pixel detectors (PXD) and four layers of double-sided silicon microstrip detectors (SVD). Precise vertexing as provided by this device is essential for measurements of time-dependent CP violation. Crucial aspects of the SVD assembly are precise alignment, as well as rigorous electrical and geometrical quality assurance. We present an overview of the construction of the SVD, including the precision gluing of SVD component modules and the wire-bonding of various electrical components. We also discuss the electrical and geometrical quality assurance tests.

44. The software framework of the Belle II silicon vertex detector and its development for the 2016 test-beam at desy

Author: N. Kambara, A. Paladino, Z. Doležal, Prafulla Kumar Behera, M. Watanabe, S. T. Divekar, C. W. Joo, Phillip Urquijo, To. Baroncelli, I. Rashevskaya, K. Nakamura, H. B. Jeon, S. Koike, Fabrizio Giulio Luca Pilo, P. K. Resmi, Jakub Kandra, A. Ishikawa, Z. Natkaniec, L. Bosisio, John Webb, T. Yoshinobu, L. Vitale, Masatoshi Maki, N. Dash, S. Bettarini, S. R. Chendvankar, H. Yin, A. K. Basith, Saraju P. Mohanty, S. Uozumi, T. Horiguchi, R. Thalmeier, D. Červenkov, M. Rozanska, L. Zani, J. Lettenbicher, Jun Sasaki, Rakesh Kumar, B. Würkner, K. H. Kang, Noritaka Shimizu, C. Schwanda, K. K. Rao, F. Forti, W. Ostrowicz, S. N. Mayekar, J. Libby, S. Bacher, K. Adamczyk, C. La Licata, A. Profeti, H. Park, A. Bozek, I. J. Watson, Y. Seino, G. Batignani, J. Stypula, A. Bauer, P. Mammini, Takeo Kawasaki, Shoichi Watanuki, B. Bhuyan, G. De Pietro, E. Paoloni, Thomas Bergauer, Takuya Higuchi, L. Lanceri, K. Hara, H. Aihara, Hitoshi Yamamoto, Y. Onuki, G. Rizzo, R. Thomas, T. Morii, W. Kun, E. L. Barberio, G. B. Mohanty, G. N. Taylor, Filippo Bosi, T. Bilka, Tariq Aziz, S. Schultschik, M. M. Kolwalkar, T. Tsuboyama, Seema Bahinipati, J. Wiechczynski, Corrado Angelini, Peter Kvasnicka, Dipanwita Dutta, G. Caria, Steven Williams, J. Suzuki, M. Ceccanti, V. Babu, T. Kohriki, L. Bulla, Satoshi Tanaka, Christian Irmler, Markus Friedl, Ti. Baroncelli, T. Lueck, G. Casarosa, F. Buchsteiner, Noriaki K. Sato, and P. Kodyč
Subjects: Physics, belle ii, silicon detector, vertex detector, silicon vertex detector, Particle physics, Multidisciplinary, Meson, business.industry, Detector, DESY, computer.software_genre, law.invention, Software framework, Nuclear physics, Software, KEKB, law, CP violation, High Energy Physics::Experiment, Collider, business, computer
Abstract: The Silicon Vertex Detector of Belle II will be fundamental not only for the reconstruction of B meson vertices, but also for the reconstruction of neutral particles like K shorts, and the tracking of low-pt particles like slow pions associated with the decays of the abundant D* mesons. As a consequence great importance is given to the performance of the software that deals with the simulation and reconstruction of the SVD events. The Belle II experiment is the successor to Belle, one of the two experiments that first observed CP violation in the decay of B mesons. The SuperKEKB collider will deliver 40 times more luminosity than its predecessor KEKB, which requires major upgrades to the detector hardware. This also poses new challenges not only for the data collection and storage, but also for the software framework which is used to process and analyse the experimental data. In this article we present in detail the SVD software framework together with its development for the test of the Vertex Detector system, which took place at DESY in April 2016 using an electron beam.

45. Electronics and firmware of the belle II silicon vertex detector readout system

Author: L. Lanceri, G. Batignani, J. Stypula, S. Uozumi, C. Joo, N. Kambara, Shih-Chang Lee, F. Buchsteiner, I. J. Watson, A. Paladino, B. Gobbo, C. Schwanda, Prafulla Kumar Behera, Y. Onuki, G. B. Mohanty, R. Thomas, T. Morii, W. Kun, E. L. Barberio, T. Horiguchi, I. Komarov, H. Park, S. Schultschik, Satoshi Tanaka, H. B. Jeon, A. Ishikawa, S. Bettarini, R. Thalmeier, H. Yamamoto, A. K. Basith, B. Bhuyan, Rahul Kumar, T. Yoshinobu, G. Caria, Z. Doležal, M. Rozanska, S. N. Mayekar, Ti. Baroncelli, Fabrizio Giulio Luca Pilo, Masatoshi Maki, Noriaki K. Sato, G. De Pietro, Thomas Bergauer, Steven Williams, T. Kawasaki, Jun Sasaki, L. Zanii, V. Babu, Tariq Aziz, J. C. Webb, Markus Friedl, K. Hara, N. Dash, F. Forti, K. Nakamura, Seema Bahinipati, Filippo Bosi, L. Vitale, S. Bacher, Jakub Kandra, T. Bilka, P. K. Resmi, M. Watanabe, Chiara La Licata, G. Rizzo, Dipanwita Dutta, L. Bosisio, A. Bozek, To. Baroncelli, K. H. Kang, N. Shimizu, Z. Natkaniec, Giulia Casarosa, S. Koike, Peter Kodys, J. Suzuki, Soumya D. Mohanty, I. Rashevskaya, B. Würkner, S. T. Divekar, A. Bauer, J. Libby, Phillip Urquijo, T. Tsuboyama, J. Wiechczynski, Corrado Angelini, Y. Seino, Agnese Martini, E. Paoloni, G. N. Taylor, Shoichi Watanuki, P. Mammini, T. Kohriki, J. Lettenbichler, Christian Irmler, T. Higuchi, L. Bulla, D. Červenkov, M. Ceccanti, A. Profeti, Peter Kvasnicka, K. Adamczyk, H. Yin, T. Lueck, H. Aihara, S. R. Chendvankar, K. K. Rao, M. M. Kolwalkar, and W. Ostrowicz
Subjects: Physics, belle ii, Finite impulse response, Physics::Instrumentation and Detectors, business.industry, Firmware, vertex detector, Electrical engineering, computer.software_genre, Signal, silicon vertex detector, Analog signal, Common-mode signal, Line (text file), business, Field-programmable gate array, computer, Zero suppression, silicon detector
Abstract: The Silicon Vertex Detector of the Belle II Experiment at KEK in Tsukuba, Japan, consists of 172 double-sided strip sensors. They are read out by 1748 APV25 chips, and the analog data are sent out of the radiation zone to 48 modules which convert them to digital. FPGAs then compensate line signal distortions using digital finite impulse response filters and detect data frames from the incoming stream. Then they perform pedestal subtraction, common mode correction and zero suppression, as well as calculate the peak timing and amplitude of each event from a set of data samples using a neural network.

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