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1. Alignment for the first precision measurements at Belle II

Author

Bilka Tadeas, Abudinen Jesus, Ackermann Karlheinz Georg, Adamczyk Karol Mateusz, Ahlburg Patrick, Aihara Hiroaki, Alonso Oscar, Albalawi Mohammed, Andricek Ladislav, Ayad Rachid, Aziz Tariq, Babu Varghese, Bacher Szymon Grzegorz, Bahinipati Seema, Batignani Giovanni, Baudot Jerome, Behera Prafulla Kumar, Bettarini Stefano, Boronat Marca, Bozek Andrzej, Braun Nils, Buchsteiner Florian, Caldwell Allen, Camien Christian, Casarosa Giulia, Cervenkov Daniel, Chekelian Vladimir, Chen Yeqi, Chilikin Kirill, Corona Luigi, Czank Thomas Rafael, Das Sanjeeda Bharati, Dash Nibedita, de Marino Gaetano, Deschamps Bruno, Dieguez Angel, Dingfelder Jochen, Doležal Zdeněk, Dujany Giulio, Esperante Daniel, Forti Francesco, Fras Markus, Frey Ariane, Friedl Markus, Fuster Juan, Gabriel Miroslav, Gadow Karsten, Ganiev Eldar, Gebauer Uwe, Gessler Thomas, Giakoustidis Georgios, Gioi Luigi Li, Gobbo Benigno, Gomis López Pablo, Greenwald Daniel, Guan Yinghui, Halder Soumen, Hara Koji, Hartbrich Oskar, Hazra Sagar, Heck Martin, Hemperek Tomasz, Hensel Martin, Higuchi Takeo, Hoek Matthias, Huber Stefan, Itoh Ryosuke, Irmler Christian, Ishikawa Akimasa, Jeon Hyebin, Joo Changwoo, Kaleta Mateusz, Kaliyar Abdul Basith, Kandra Jakub, Kang Kookhyun, Kapusta Piotr Julian, Kiesling Christian, Kisielewski Bartlomiej, Kittlinger David, Kleinwort Claus, Klose Daniel, Kodyš Peter, Koffmane Christian, Kohriky T., Kono Tomoyuki, Konorov Igor, Krivokuca Silvia, Krüger Hans, Kuhr Thomas, Kumar Manish, Kumar Rajeev, Kvasnička Peter, Lacasta Carlos, La Licata Chiara, Lalwani Kavita, Lanceri Livio, Lange Jens Sören, Lautenbach Klemens, Lee Seungcheol, Leis Ulrich, Leitl Philipp, Levit Dmytro, Li Chunhua, Li Y. B., Libby James Frederick, Liemann Gerhard, Liu Qingyuan, Liu Zhen’An, Lück Thomas, Luetticke Florian, Macharski Lydia, Maity Souvik, Mariñas Carlos, Mayekar Sukant Narendra, Mccarney Sara, Mohanty Gagan Bihari, Mora Grimaldo Johnny Alejandro, Morii Tomoko, Moser Hans-Günther, Moya David, Müller Felix Johannes, Müller Felix, Nakamura Katsuro, Nakao Mikihiko, Natkaniec Zbigniew Marian, Niebuhr Carsten, Ninkovic Jelena, Onuki Yoshiyuki, Ostrowicz Waclaw, Paladino Antonio, Paoloni Eugenio, Park Hwanbae, Park SeokHee, Paschen Botho, Paul Stephan Martin, Peric Ivan, Poblotzki Frauke, Rabusov Andrei, Rao K. K., Reiter Simon, Richter Rainer Helmut, Ripp-Baudot Isabelle, Ritter Martin, Ritzert Michael, Rizzo Giuliana, Rout Niharika, Sahoo Debashis, Sanchez Javier Gonzalez, Santelj Luka, Sato Nobuhiko, Scavino Bianca, Schaller Gerhard, Schnecke Martina, Schopper Florian, Schreeck Harrison, Schwanda Christoph, Schwenker Benjamin, Sedlmeyer Reinhard, Sfienti Concettina, Simon Frank, Skambraks Sebastian, Soloviev Yuri, Spruck Björn, Stefková Slavomira, Stever Reimer, Stolzenberg Ulf, Suzuki Soh Yamagata, Takahashi Maiko, Tafelmayer Eva, Tanaka Shuji, Tanigawa Hikaru, Thalmeier Richard, Tsuboyama Toru, Uematsu Yuma, Verbycka O., Vila Ivan, Virto Amparo Lopez, Vitale Lorenzo, Vogt Sven, Vos Marcel, Wan Kun, Wang Boqun, Watanuki Shun, Webb James, Wermes Norbert, Wessel Christian, Wiechczyński Jarosław Paweł, Wieduwilt Philipp, Windel Hendrik, Yamada Satoru, Ye Hua, Yin Hao, Zani Laura, and Zhang Tingyu

Subjects
Physics, QC1-999
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 or primary vertex position alignment. 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-BFactories. 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
2020
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2. Data quality monitors of vertex detectors at the start of the Belle II experiment

Author

Kodyš Peter, Abudinen Jesus, Ackermann Karlheinz Georg, Adamczyk Karol Mateusz, Ahlburg Patrick, Aihara Hiroaki, Alonso Oscar, Albalawi Mohammed, Andricek Ladislav, Ayad Rachid, Aziz Tariq, Babu Varghese, Bacher Szymon Grzegorz, Bahinipati Seema, Batignani Giovanni, Baudot Jerome, Behera Prafulla Kumar, Bettarini Stefano, Bilka Tadeáš, Boronat Marca, Bozek Andrzej, Braun Nils, Buchsteiner Florian, Caldwell Allen, Camien Christian, Casarosa Giulia, Cervenkov Daniel, Chekelian Vladimir, Chen Yeqi, Corona Luigi, Czank Thomas Rafael, Das Sanjeeda Bharati, Dash Nibedita, de Marino Gaetano, Deschamps Bruno, Dieguez Angel, Dingfelder Jochen, Doležal Zdeněk, Dujany Giulio, Esperante Daniel, Forti Francesco, Fras Markus, Frey Ariane, Friedl Markus, Fuster Juan, Gabriel Miroslav, Gadow Karsten, Ganiev Eldar, Gebauer Uwe, Gessler Thomas, Giakoustidis Georgios, Gioi Luigi Li, Gobbo Benigno, Gomis López Pablo, Greenwald Daniel, Guan Yinghui, Halder Soumen, Hara Koji, Hartbrich Oskar, Hazra Sagar, Heck Martin, Hemperek Tomasz, Hensel Martin, Higuchi Takeo, Hoek Matthias, Huber Stefan, Itoh Ryosuke, Irmler Christian, Ishikawa Akimasa, Jeon Hyebin, Joo Changwoo, Kaleta Mateusz, Kaliyar Abdul Basith, Kandra Jakub, Kang Kookhyun, Kapusta Piotr Julian, Kiesling Christian, Kisielewski Bartlomiej, Kittlinger David, Klose Daniel, Koffmane Christian, Kohriky T., Kono Tomoyuki, Konorov Igor, Krivokuca Silvia, Krüger Hans, Kuhr Thomas, Kumar Manish, Kumar Rajeev, Kvasnicˇka Peter, Lacasta Carlos, La Licata Chiara, Lalwani Kavita, Lanceri Livio, Lange Jens Sören, Lautenbach Klemens, Lee Seungcheol, Leis Ulrich, Leitl Philipp, Levit Dmytro, Li Chunhua, Li Y. B., Libby James Frederick, Liemann Gerhard, Liu Qingyuan, Liu Zhen’An, Lück Thomas, Luetticke Florian, Macharski Lydia, Maity Souvik, Mariñas Carlos, Mayekar Sukant Narendra, Mccarney Sara, Mohanty Gagan Bihari, Mora Grimaldo Johnny Alejandro, Morii Tomoko, Moser Hans-Günther, Moya David, Müller Felix Johannes, Müller Felix, Nakamura Katsuro, Nakao Mikihiko, Natkaniec Zbigniew Marian, Niebuhr Carsten, Ninkovic Jelena, Onuki Yoshiyuki, Ostrowicz Waclaw, Paladino Antonio, Paoloni Eugenio, Park Hwanbae, Park SeokHee, Paschen Botho, Paul Stephan Martin, Peric Ivan, Poblotzki Frauke, Rabusov Andrei, Rao K. K., Reiter Simon, Richter Rainer Helmut, Ripp-Baudot Isabelle, Ritter Martin, Ritzert Michael, Rizzo Giuliana, Rout Niharika, Sahoo Debashis, Sanchez Javier Gonzalez, Santelj Luka, Sato Nobuhiko, Scavino Bianca, Schaller Gerhard, Schnecke Martina, Schopper Florian, Schreeck Harrison, Schwanda Christoph, Schwenker Benjamin, Sedlmeyer Reinhard, Sfienti Concettina, Simon Frank, Skambraks Sebastian, Soloviev Yuri, Spruck Björn, Stefková Slavomira, Stever Reimer, Stolzenberg Ulf, Suzuki Soh Yamagata, Takahashi Maiko, Tafelmayer Eva, Tanaka Shuji, Tanigawa Hikaru, Thalmeier Richard, Tsuboyama Toru, Uematsu Yuma, Verbycka O., Vila Ivan, Virto Amparo Lopez, Vitale Lorenzo, Vogt Sven, Vos Marcel, Wan Kun, Wang Boqun, Watanuki Shun, Webb James, Wermes Norbert, Wessel Christian, Wiechczyński Jarosław Paweł, Wieduwilt Philipp, Windel Hendrik, Yamada Satoru, Ye Hua, Yin Hao, Zani Laura, and Zhang Tingyu

Subjects
Physics, QC1-999
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
2020
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4. Measurement of the $\Omega_c^0$ lifetime at Belle II

Author

Abudinen, Fernando Jesus, Adachi, Ichiro, Aggarwal, Latika, Ahmed, Hossain, Aihara, Hiroaki, Akopov, Norayr, Aloisio, Alberto, Nguyen, Anh-Ky, Asner, David Mark, Aushev, Tagir, Aushev, Volodymyr Ye, Bae, Hanwook, Bambade, Philip, Banerjee, Sw., Banerjee, Swagato, Baudot, Jerome, Bauer, Moritz, Beaubien, Alexandre, Becker, Juergen, Behera, Prafulla Kumar, Bennett, Jake, Bernieri, Enrico, Bernlochner, Florian, Bertacchi, Valerio, Bertemes, Michel, Bertholet, Emilie, Bessner, Martin, Bettarini, Stefano, Bhuyan, Bipul, Bianchi, Fabrizio, Bilka, Tadeas, Biswas, Diptaparna, Bodrov, Denis, Bolz, Arthur, Borah, Jyotirmoi, Bozek, Andrzej, Bracko, Marko, Branchini, Paolo, Briere, R. A., Browder, Thomas Earl, Budano, Antonio, Bussino, Severino, Campajola, Marcello, Cao, Lu, Casarosa, Giulia, Cecchi, Claudia, Chang, Ming-Chuan, Cheema, Priyanka, Chekelian, Vladimir, Chen, Yongqing, Chilikin, Kirill, Chirapatpimol, Khem, Cho, HanEol, Cho, Kihyeon, Cho, Sungjin, Choi, Sookyung, Choudhury, Seema, Cinabro, David, Corona, Luigi, Cunliffe, Samuel Thomas, Das, Sanjeeda Bharati, Dattola, Filippo, De La Cruz Burelo, Eduard, De La Motte, Shanette Anne, de Marino, Gaetano, De Nardo, Guglielmo, De Nuccio, Michael, De Pietro, Giacomo, de Sangro, Riccardo, Destefanis, Marco, Dey, Sourav, De Yta Hernandez, Alejandro, Dhamija, Rashmi, Di Canto, Angelo, Di Capua, Francesco, Dingfelder, Jochen, Dolezal, Zdenek, Dominguez Jimenez, Isabel, Dong, Thanh Van, Dorigo, Mirco, Dort, Katharina, Dreyer, Sascha, Dubey, Shawn, Dujany, Giulio, Ecker, Patrick, Eliachevitch, Michael, Epifanov, Denis Alexandrovich, Feichtinger, Paul, Ferber, Torben, Ferlewicz, Daniel, Fillinger, Tristan, Finocchiaro, Giuseppe, Fodor, Andrea, Forti, Francesco, Fulsom, Bryan Gregory, Ganiev, Eldar, Gaur, Vipin, Gaz, Alessandro, Gellrich, Andreas, Ghevondyan, Gayane, Giordano, Raffaele, Giri, Anjan, Glazov, Alexander, Gobbo, Benigno, Godang, Romulus, Goldenzweig, Pablo, Gradl, Wolfgang, Granderath, Svenja Katharina, Graziani, Enrico, Greenwald, Daniel, Gu, Tianping, Guan, Yinghui, Gudkova, Kristina, Guilliams, Justin, Hayasaka, Kiyoshi, Hayashii, Hisaki, Hazra, Sagar, Hearty, Christopher, Heredia de la Cruz, Ivan, Hernandez Villanueva, Michel, Hershenhorn, Alon David, Higuchi, Takeo, Hill, Ewan Chin, Hirata, Hikari, Hohmann, Marcel, Hsu, Chia-Ling, Iijima, Toru, Inami, Kenji, Inguglia, Gianluca, Ipsita, N. Sushree, Ishikawa, Akimasa, Ito, Shintaro, Itoh, Ryosuke, Iwasaki, Masako, Jackson, Paul Douglas, Jacobs, William Wescott, Jaffe, David, Jang, Eunji, Jia, Sen, Jin, Yifan, Joo, Kyung Kwang, Junkerkalefeld, Henrik, Kaliyar, Abdul Basith, Kang, Kookhyun, Karl, Robert, Karyan, Gevorg, Kiesling, Christian, Kim, Cheolhun, Kim, Doris Yangsoo, Kim, Kyungho, Kim, Yongkyu, Kindo, Haruki, Kinoshita, Kay, Kodys, Peter, Koga, Taichiro, Kohani, Shahab, Kojima, Kazuki, Konno, Tomoyuki, Korobov, Alexandr, Korpar, Samo, Kovalenko, Evgeniy, Kowalewski, Robert, Kraetzschmar, Thomas Michael Gerd, Krizan, Peter, Krokovny, Pavel, Kumar, Jitendra, Kumara, Kospalage Janaka, Kunigo, Takuto, Kuzmin, Alexander, Kwon, Youngjoon, Lacaprara, Stefano, Lam, Tommy, Lanceri, Livio, Lange, Jens Soeren, Laurenza, Martina, Lautenbach, Klemens, Leboucher, Robin, Li, Chunhua, Li, Longke, Libby, James Frederick, Lieret, Kilian Adriano, Liptak, Zachary John, Liu, Qingyuan, Liventsev, Dmitri, Longo, Savino, Lozar, Andrej, Lueck, Thomas, Lyu, Chaoyi, Maggiora, Marco, Maiti, Rajesh Kumar, Manfredi, Riccardo, Manoni, Elisa, Marcello, Simonetta, Marinas, Carlos, Martini, Alberto, Martinov, Tommy, Massaccesi, Ludovico, Masuda, Masataka, Maurya, Shubhangi Krishan, McKenna, Janis Anne, Meier, Frank, Merola, Mario, Metzner, Felix, Milesi, Marco, Miller, Caleb, Miyabayashi, Kenkichi, Mizuk, Roman, Mohanty, G. B., Molina-Gonzalez, N., Molina, Norman Wilfrido, Moneta, Stefano, Moser, Hans-Guenther, Mrvar, Manca, Mussa, Roberto, Nakamura, Isamu, Nakao, Mikihiko, Nakayama, Hiroyuki, Nakazawa, Yu, Narimani Charan, Abtin, Naruki, Megumi, Natkaniec, Zbigniew Marian, Natochii, Andrii, Nayak, Lopamudra, Nayak, Minakshi, Nazaryan, Gevorg, Nellikunnummel, Nisar, Ogawa, Satoru, Ono, Hiroaki, Onuki, Yoshiyuki, Oxford, Emma Rollinson, Paladino, Antonio, Panta, Anil, Paoloni, Eugenio, Pardi, Silvio, Park, Hwanbae, Park, Seokhee, Passeri, Antonio, Paul, Stephan Martin, Pedlar, Todd Kristofer, Peruzzi, Ida Marena, Peschke, Richard, Pestotnik, Rok, Piccolo, Marcello, Piilonen, L. E., Podesta lerma, Pedro Luis Manuel, Podobnik, Tomaz, Pokharel, Saroj, Polat, Leonard, Praz, Cyrille, Prell, Soeren, Prencipe, Elisabetta, Prim, Markus Tobias, Purwar, Harsh, Rad, Navid Khandan, Rados, Petar, Raiz, Sebastiano, Ramirez Morales, Andres, Reif, Markus, Reiter, Simon, Remnev, Mikhail, Ripp-Baudot, Isabelle, Rizzo, Giuliana, Robertson, Steven H., Roney, John Michael, Rostomyan, Armine, Rout, Niharika, Russo, Guido, Sanders, David Alan, Sandilya, Saurabh, Sangal, Aman, Sato, Yo, Savinov, Vladimir, Scavino, Bianca, Schueler, Jeff, Schwanda, Christoph, Schwartz, Alan Jay, Schwenker, Benjamin, Seino, Yoshiaki, Selce, Andrea, Senyo, Katsumi, Serrano, Justine, Sevior, Martin Edmund, Sfienti, Concettina, Shen, Chengping, Shi, Xiaodong, Shillington, Trevor, Sibidanov, Alexei, Singh, Jasbir, Skorupa, Justin, Sobie, Randall, Soffer, Abner, Solovieva, Elena, Spataro, Stefano, Spruck, Bjoern, Staric, Marko, Stefkova, Slavomira, Stottler, Zachary Shaun, Stroili, Roberto, Strube, Jan Fridolf, Sumihama, Mizuki, Sumisawa, Kazutaka, Sutcliffe, William, Suzuki, Soh Yamagata, Svidras, Henrikas, Takizawa, Makoto, Tamponi, Umberto, Tanida, Kiyoshi, Tanigawa, Hikaru, Tenchini, Francesco, Thaller, Arthur, Tiwary, Rahul, Tonelli, Diego, Torassa, Ezio, Toutounji, Nadia Ejlal, Trabelsi, Karim, Uchida, Makoto, Ueda, Ikuo, Uematsu, Yuma, Uglov, Timofey, Unger, Kai Lukas, Unno, Yuji, Uno, Kenta, Uno, Shoji, Ushiroda, Yutaka, Vahsen, Sven Einar, van Tonder, Raynette, Varner, Gary, Varvell, Kevin Ernest, Vinokurova, Anna, Vitale, Lorenzo, Vobbilisetti, Vidya Sagar, Wakeling, Hannah Marie, Wang, Erfei, Wang, Min-Zu, Wang, Xiaolong, Warburton, Andreas, Watanabe, Minori, Watanuki, Shun, Welsch, Maximilian, Wessel, Christian, Won, Eunil, Yabsley, Bruce Donald, Yamada, Satoru, Yan, Wenbiao, Yang, Seongbae, Ye, Hua, Yelton, John, Yin, Junhao, Yook, Youngmin, Yoshihara, Keisuke, Yuan, Changzheng, Zani, Laura, Zhang, Yi, Zhilich, Victor, Zhou, Qi-Dong, Zhou, Xing-Yu, Zhukova, Valentina, Zlebcik, Radek, Belle-II Collaboration, 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), 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), Belle-II, and HEP, INSPIRE

Subjects
lifetime, Omega, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], hadronic decay [Omega/c0], BELLE, annihilation [electron positron], electron positron: colliding beams, Omega/c0: hadronic decay, electron positron: annihilation, pi+, High Energy Physics - Experiment, KEK-B, Omega/c0: lifetime, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], colliding beams [electron positron], ddc:530, charmed baryon, +Omega-+pi%2B%22">Omega/c0 --> Omega- pi+, lifetime [Omega/c0], experimental results
Abstract

Physical review / D 107, L031103 (2023). doi:10.1103/PhysRevD.107.L031103, We report on a measurement of the $\Omega_c^0$ lifetime using $\Omega_c^0 \to \Omega^-\pi^+$ decays reconstructed in $e^+e^-\to c\bar{c}$ data collected by the Belle II experiment and corresponding to $207~{\rm fb^{-1}}$ of integrated luminosity. The result, $\rm\tau(\Omega_c^0)=243\pm48( stat)\pm11(syst)~fs$, agrees with recent measurements indicating that the $\Omega_c^0$ is not the shortest-lived weakly decaying charmed baryon., Published by Inst., Woodbury, NY

Published
2023
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5. Measurement of the $B^+/B^0$ production ratio in $e^+e^-$ collisions at the $\Upsilon(4S)$ resonance using $B \rightarrow J/\psi(\ell\ell) K$ decays at Belle

Author

Adachi, Ichirou, Aihara, Hiroaki, Asner, David, Atmacan, Hulya, Aushev, Tagir, Ayad, Rachid, Babu, Varghese, Bahinipati, Seema, Behera, Prafulla Kumar, Belous, Konstantin, Bennett, Jake, Bessner, Martin, Bhardwaj, Vishal, Bhuyan, Bipul, Bilka, Tadeas, Bodrov, Denis, Bonvicini, Giovanni, Borah, Jyotirmoi, Bozek, Andrzej, Bracko, Marko, Branchini, Paolo, Browder, Thomas, Budano, Antonio, Campajola, Marcello, Cervenkov, Daniel, Chang, Ming-Chuan, Chen, Chunhui, Cheon, Byunggu, Chilikin, Kirill, Cho, Haneol, Cho, Kihyeon, Cho, Sungjin, Choi, Sookyung, Choi, Youngil, Choudhury, Seema, Cinabro, David, Das, Sanjeeda Bharati, de Pietro, Giacomo, Di Capua, Francesco, Dingfelder, Jochen, Dolezal, Zdenek, Dong, Thanh Van, Epifanov, Denis Alexandrovich, Ferlewicz, Daniel, Fulsom, Bryan Gregory, Garg, Renu, Gaur, Vipin, Gabyshev, Nikolay, Giri, Anjan, Goldenzweig, Pablo, Graziani, Enrico, Gu, Tianping, Gudkova, Kristina, Hadjivasiliou, Christos, Hara, Takanori, Hayasaka, Kiyoshi, Hayashii, Hisaki, Hedges, Michael Thomas, Herrmann, Daniel Ricalde, Hou, George Wei-Shu, Hsu, Chia-Ling, Inami, Kenji, Ipsita, N. Sushree, Ishikawa, Akimasa, Itoh, Ryosuke, Iwasaki, Masako, Jacobs, William, Jang, Eunji, Ji, Qingping, Jia, Sen, Jin, Yifan, Joo, Kyung Kwang, Kang, Kook Hyun, Kawasaki, Takeo, Kiesling, Christian, Kim, Cheolhun, Kim, Doris Yangsoo, Kim, Kyungho, Kim, Yongkyu, Kindo, Haruki, Kinoshita, Kay, Kodys, Peter, Konno, Tomoyuki, Korobov, Alexander, Korpar, Samo, Kovalenko, Evgeniy, Krizan, Peter, Krokovny, Pavel, Kumar, Manish, Kumar, Rajeev, Kumara, Kospalage Janaka, Kwon, Young-Joon, Lam, Tommy, Lange, Jens Soeren, Laurenza, Martina, Lee, Seungcheol, Lewis, Peter, Li, Jin, Li, Longke, Li, Yubo, Li Gioi, Luigi, Libby, James Frederick, Lieret, Kilian Adriano, Liventsev, Dmitri, Luo, Tao, Masuda, Masataka, Matsuda, Tatsuro, Matvienko, Dmitry, Maurya, Shubhangi Krishan, Meier, Frank, Merola, Mario, Metzner, Felix, Miyabayashi, Kenkichi, Mizuk, Roman, Mohanty, Gagan Bihari, Nakamura, Isamu, Nakao, Mikihiko, Natkaniec, Zbigniew, Natochii, Andrii, Nayak, Lopamudra, Nayak, Minakshi, Nellikunnummel, Nisar, Nishida, Shohei, Ogawa, Satoru, Ono, Hiroaki, Oskin, Pavel, Pakhlov, Pavel, Pakhlova, Galina, Pardi, Silvio, Park, Seokhee, Passeri, Antonio, Patra, Sourav, Paul, Stephan Martin, Pedlar, Todd Kristofer, Pestotnik, Rok, Piilonen, Leo, Podobnik, Tomaz, Prell, Soeren, Prencipe, Elisabetta, Prim, Markus, Rout, Niharika, Russo, Guido, Sakai, Yoshihide, Sandilya, Saurabh, Sangal, Aman, Santelj, Luka, Savinov, Vladimir, Schueler, Jeff, Schwanda, Christoph, Schwartz, Alan Jay, Seino, Yoshiaki, Senyo, Katsumi, Sevior, Martin Edmund, Shapkin, Mikhail, Sharma, Chanchal, Shen, Chengping, Shiu, Jing-Ge, Singh, Jasbir, Sokolov, Anatoly, Solovieva, Elena, Staric, Marko, Stottler, Zachary S., Strube, Jan, Sumihama, Mizuki, Sumiyoshi, Takayuki, Takizawa, Makoto, Tanida, Kiyoshi, Tenchini, Francesco, Trabelsi, Karim, Uchida, Makoto, Uglov, Timofey, Unno, Yuuji, Uno, Shoji, Urquijo, Phillip, Ushiroda, Yutaka, Usov, Yuri, van Tonder, Raynette, Varner, Gary, Varvell, Kevin Ernest, Vinokurova, Anna, Vossen, Anselm Georg, Waheed, Eiasha, Wang, Erfei, Wang, Min-Zu, Wang, Xiaolong, Watanabe, Minori, Watanuki, Shun, Won, Eunil, Xu, Xinping, Yabsley, Bruce, Yang, Seongbae, Yelton, John, Yin, Junhao, Yuan, Changzheng, Yusa, Yosuke, Zhai, Yunxiao, Zhang, Ziping, Zhilich, Victor, Zhukova, Valentina, and HEP, INSPIRE

Subjects
+electron+positron%22">J/psi(3100) --> electron positron, B0: hadronic decay, Upsilon(10570): electroproduction, +J%2Fpsi%283100%29+K%2B%22">B+ --> J/psi(3100) K+, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], +B0+anti-B0%22">Upsilon(10570) --> B0 anti-B0, measure: ratio, BELLE, electron positron: colliding beams, branching ratio: ratio, electron positron: annihilation, +B%2B+B%22">Upsilon(10570) --> B+ B, decay rate: ratio, electron: pair production, muon: pair production, J/psi(3100): leptonic decay, Upsilon(10570): branching ratio, error: statistical, KEK-B, +muon%2B+muon%22">J/psi(3100) --> muon+ muon, +J%2Fpsi%283100%29+K0%22">B0 --> J/psi(3100) K0, isospin: symmetry, B+: hadronic decay, experimental results
Abstract

We measure the ratio of branching fractions for the $\Upsilon (4S)$ decays to $B^+B^-$ and $B^0\bar{B}{}^0$ using $B^+ \rightarrow J/\psi(\ell\ell) K^+$ and $B^0 \rightarrow J/\psi(\ell\ell) K^0$ samples, where $J/\psi(\ell\ell)$ stands for $J/\psi \to \ell^+\ell^-$ ($\ell = e$ or $\mu$), with $711$ fb$^{-1}$ of data collected at the $\Upsilon(4S)$ resonance with the Belle detector. We find the decay rate ratio of $\Upsilon(4S) \rightarrow B^+B^-$ over $\Upsilon(4S) \rightarrow B^0\bar{B}{}^0$ to be $1.065\pm0.012\pm 0.019 \pm 0.047$, which is the most precise measurement to date. The first and second uncertainties are statistical and systematic, respectively, and the third uncertainty is systematic due to the assumption of isospin symmetry in $B \to J/\psi(\ell\ell) K$.

Published
2022

6. Performance of the Belle II Silicon Vertex Detector

Author

Paladino, Antonio, primary, Aihara, Hiroaki, additional, Aziz, Tariq, additional, Bacher, Szymon Grzegorz, additional, Bahinipati, Seema, additional, Batignani, Giovanni, additional, Behera, Prafulla Kumar, additional, Bettarini, Stefano, additional, Bilka, Tadeas, additional, Bozek, Andrzej, additional, Buchsteiner, Florian, additional, Casarosa, Giulia, additional, Cervenkov, Daniel, additional, Corona, Luigi, additional, Czank, Thomas Rafael, additional, Das, Sanjeeda Bharati, additional, Dolezal, Zdenek, additional, Forti, Francesco, additional, Friedl, Markus, additional, Ganiev, Eldar, additional, Gobbo, Benigno, additional, Halder, Soumen, additional, Hara, Koji, additional, Higuchi, Takeo, additional, Irmler, Christian, additional, Ishikawa, Akimasa, additional, Jeon, Hyebin, additional, Joo, Changwoo, additional, Kaleta, Mateusz, additional, Kandra, Jakub, additional, Kang, Kookhyun, additional, Kapusta, Piotr Julian, additional, Kodys, Peter, additional, Kohriki, Takashi, additional, Kumar, Manish, additional, Kumar, Rajeev, additional, Kvasnicka, Peter, additional, La Licata, Chiara, additional, Lalwani, Kavita, additional, Lanceri, Livio, additional, Lee, Jaeyong, additional, Lee, Seungcheol, additional, Li, Yubo, additional, Libby, James Frederick, additional, Lueck, Thomas, additional, Maity, Souvik, additional, Mayekar, Sukant Narendra, additional, Mohanty, Gagan Bihari, additional, Mora Grimaldo, Johnny Alejandro, additional, Morii, Tomoko, additional, Nakamura, Katsuro, additional, Natkaniec, Zbigniew Marian, additional, Onuki, Yoshiyuki, additional, Ostrowicz, Waclaw, additional, Paoloni, Eugenio, additional, Park, Hwanbae, additional, Rao, Kameswara Kodali, additional, Rizzo, Giuliana, additional, Rout, Niharika, additional, Sahoo, Debashis, additional, Sasaki, Junya, additional, Sato, Nobuhiko, additional, Schwanda, Christoph, additional, Stypula, Jacek, additional, Sugiura, Ryohei, additional, Suzuki, Junichi, additional, Tanaka, Shuji, additional, Tanigawa, Hikaru, additional, Thalmeier, Richard, additional, Tsuboyama, Toru, additional, Uematsu, Yuma, additional, Vitale, Lorenzo, additional, Wan, Kun, additional, Watanabe, Minori, additional, Watanuki, Shun, additional, Webb, James, additional, Wiechczynski, Jaroslaw, additional, Yin, Hao, additional, and Zani, Laura, additional

Published
2020
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