Corpus ID: 235266178

Measurement of the time-integrated mixing probability $\chi_d$ with a semileptonic double-tagging strategy and $34.6 {\rm fb}^{-1}$ of Belle II collision data

  title={Measurement of the time-integrated mixing probability \$\chi\_d\$ with a semileptonic double-tagging strategy and \$34.6 \{\rm fb\}^\{-1\}\$ of Belle II collision data},
  author={Belle II collaboration F. Abudin'en and Iki Adachi and Rama Prasad Adak and Karol Mateusz Adamczyk and Patrick Ahlburg and J. K. Ahn and Hiroaki Aihara and N. Z. Akopov and Alberto Aloisio and Fabrizio Ameli and Ladislav Andricek and Nguyễn Anh Kỳ and David Asner and Hulya Atmacan and Vladimir M. Aulchenko and T. A.-Kh. Aushev and Volodymyr Aushev and Tariq Aziz and Varghese Babu and S. Bacher and Steffen Baehr and Seema Bahinipati and Andrew Bakich and Ph. Bambade and Sw. Banerjee and Sunil Bansal and Matthew Barrett and Giovanni Batignani and J. Baudot and Alexandre Beaulieu and Juergen Becker and P. K. Behera and Michael Bender and J. V. Bennett and Enrico Bernieri and F. U. Bernlochner and M. Bertemes and Emilie Bertholet and Martin Florian Bessner and Stefano Bettarini and V. Bhardwaj and Bipul Bhuyan and Federico Bianchi and Tadeas Bilka and Sviatoslav Bilokin and Debabrata Biswas and A. Bobrov and Alexander E. Bondar and Gianni Bonvicini and Andrz{\'e}j Bozek and M. Bravcko and Paolo Branchini and Nils Braun and Roy Anthony Briere and T. E. Browder and D. N. Brown and Antonio Budano and Leonid A. Burmistrov and S. Bussino and Marcello Campajola and Lu Cao and Giacomo Caria and Giulia Casarosa and Claudia Cecchi and D. vCervenkov and M. -C. Chang and P Chang and Racha Cheaib and Vladimir Chekelian and C. Chen and Y. Q. Chen and Y. -T. Chen and B. G. Cheon and Kirill Chilikin and Khem Chirapatpimol and H. -E. Cho and K. Cho and S. -J. Cho and S. K. Choi and Samrat Choudhury and David Anthony Cinabro and Luigi Corona and L. Cremaldi and D. Cuesta and Samuel Cunliffe and Thomas Rafael Czank and Nitali Dash and Filippo Dattola and Eduard De la Cruz-Burelo and Gaetano De Marino and G. De Nardo and Massimiliano Nuccio and Giacomo De Pietro and Riccardo de Sangro and Bruno Deschamps and Marco Destefanis and Sourav Dey and A. De Yta-Hernandez and A. Di Canto and Francesco Di Capua and Salvatore Di Carlo and J. Dingfelder and Z. Dolevzal and I. Dom'inguez Jim'enez and Thanh Van Dong and K. Dort and David Dossett and S. Dubey and Stephan Duell and Giulio Dujany and Simon I. Eidelman and Michael Eliachevitch and Denis Epifanov and James E. Fast and Torben Ferber and Daniel Ferlewicz and Tristan Fillinger and Gaetano Finocchiaro and S. Fiore and Peter Fischer and Andrea Fodor and Francesco Forti and A. Frey and Markus Friedl and B. G. Fulsom and Miroslav Gabriel and N. I. Gabyshev and Eldar Ganiev and Mar Garc{\'i}a-Hern{\'a}ndez and Rocky Bala Garg and Alexey Garmash and Vinod K. Gaur and Alessandro Gaz and Uwe Gebauer and Moritz Gelb and Andreas Gellrich and Jochen Gemmler and Thomas Gessler and D. Getzkow and Raffaele Giordano and Anjan Kumar Giri and A. Glazov and Benigno Gobbo and R. Godang and Pablo D. Goldenzweig and Bo{\vs}tjan Golob and P. Gomis and P. Grace and Wolfgang Gradl and Enrico Graziani and Daniel Greenwald and Yanjun Guan and K. Gudkova and Ch. Hadjivasiliou and Soumen Halder and Keigo Hara and T. Hara and Oskar Hartbrich and K. Hayasaka and Hisaki Hayashii and S. Hazra and Christopher Hearty and M. T. Hedges and Ivan Heredia-De La Cruz and Michel Hern{\'a}ndez Villanueva and Alon David Hershenhorn and Toshiro Higuchi and E. C. Hill and Hikari Hirata and M. Hoek and Mima Hohmann and Sophie Elizabeth Hollitt and T Hotta and C. -L. Hsu and Y. L. Hu and K. Huang and Thibaud Humair and Toru Iijima and Kenji Inami and Gianluca Inguglia and J. Irakkathil Jabbar and Akira Ishikawa and Ryosuke Itoh and M. Iwasaki and Yoh Iwasaki and S. Iwata and P. D. Jackson and William W. Jacobs and Igal Jaegl{\'e} and David E. Jaffe and E. J. Jang and M. Jeandron and Hyejin Jeon and Sen Jia and Y. J. Jin and Changwoo Joo and Kyung Kwang Joo and H. Junkerkalefeld and I. Kadenko and James Kahn and Hidekazu Kakuno and Abdul Basith Kaliyar and Jakub Kandra and Kookjin Kang and Peter Kapusta and R. Karl and Gevorg Karyan and Yoshitomo Kato and Hikaru Kawai and Toshisuke Kawasaki and Thomas Keck and Christopher K. Ketter and H. Kichimi and Ch. Kiesling and B. H. Kim and C. H. Kim and D. Y.-J. Kim and H. J. Kim and K. -H. Kim and K. -H. Kim and S. -H. Kim and Y. -K. Kim and Y. Kim and T. D. Kimmel and Haruki Kindo and Keisuke Kinoshita and Brian Kirby and C. Kleinwort and Bogdan Knysh and P. Kodyvs and Taichiro Koga and Sayeh Kohani and Ilya Komarov and Tomohiro Konno and Alexander Korobov and Samo Korpar and N. Kovalchuk and E. Kovalenko and T. M. G. Kraetzschmar and Fabian Michael Krinner and Peter Krivzan and Robert Kroeger and J. F. Krohn and Pavel Krokovny and Hans Kruger and Wolfgang Kuehn and Thomas Kuhr and Jason Kumar and M. Kumar and R. Kumar and K. Kumara and Tetsuro Kumita and Takuto Kunigo and M. Kunzel and S. Kurz and Alexei Kuzmin and P. Kvasnivcka and Y. -J. Kwon and Stefano Lacaprara and Y. -T. Lai and Chiara La Licata and Kavita Lalwani and L. Lanceri and J. S. Lange and Monica Laurenza and Klemens Lautenbach and P. J. Laycock and F. R. Le Diberder and I. S. Lee and S. C. Lee and Philipp Leitl and Dmytro Levit and Philip Lewis and C. Li and C. -H. Li and L. K. Li and S. Li and Y. B. Li and James Frederick Libby and Kilian Lieret and L. Li Gioi and J. Lin and Z. J. Liptak and Q. Y. Liu and Z. A. Liu and Dmitriy V. Liventsev and Stefano Longo and Alyssa Loos and P. Lu and Matic Lubej and Thomas Lueck and Florian Luetticke and Tao Luo and C. Lyu and C. MacQueen and Yosuke Maeda and Marco Maggiora and Souvik Maity and R. Manfredi and Elisabetta Manoni and Simonetta Marcello and C. Marinas and Alessio Martini and M. Masuda and Takeshi Matsuda and Kodai Matsuoka and Dmitry Matvienko and J. T. McNeil and Felix Meggendorfer and J. C. Mei and Frank Meier and Mario Merola and Felix Metzner and M. Milesi and C. Miller and Kenkichi Miyabayashi and Hideki Miyake and Hitoshi Miyata and R. Mizuk and K. Azmi and G B Mohanty and H. K. Moon and T. Moon and Johnny Alejandro Mora Grimaldo and Tomoko Morii and H-G. Moser and Manca Mrvar and Felix Mueller and F. J. Muller and Th. Muller and Genta Muroyama and Colm Harold Murphy and Roberto Mussa and Kouta Nakagiri and Isamu Nakamura and K. R. Nakamura and Eiichi Nakano and M. Nakao and H. Nakayama and Hideyuki Nakazawa and Tara Nanut and Zbigniew Natkaniec and A. Natochii and M. Nayak and G. Nazaryan and Dmitrii Neverov and Carsten Niebuhr and Masayuki Niiyama and Jelena Ninkovi{\'c} and N. K. Nisar and Shin'ya Nishida and Kurtis Alan Nishimura and Makoto Nishimura and M. H. A. Nouxman and Benjamin Oberhof and Kohei Ogawa and Satoru Ogawa and Stephen Lars Olsen and Yu. M. Onishchuk and H. Ono and Y. Onuki and P. Oskin and E. R. Oxford and Hideo Ozaki and P. Pakhlov and Galina Pakhlova and A. Paladino and Tong Pang and Antoni Pańta and Eugenio Paoloni and Silvio Pardi and H. K. Park and S. H. Park and Botho Paschen and Antonio Passeri and A. Pathak and S. Patra and Soumen Paul and Todd Kristofer Pedlar and I. M. Peruzzi and Richard Peschke and Rok Pestotnik and Mauro Piccolo and Leo Piilonen and P. L. M. Podesta-Lerma and G. Polat and V. Popov and C. Praz and S. Prell and Elisabetta Prencipe and Markus Tobias Prim and M. V. Purohit and Navid K. Rad and Pere Rados and S. Raiz and Reem Rasheed and M. Reif and Simon Reiter and Mikhail Anatolyevich Remnev and P. K. Resmi and Isabelle Ripp-Baudot and Martin Ritter and Michael Ritzert and G. Rizzo and Leonardo Benjamin Rizzuto and S. H. Robertson and D. Rodr'iguez P'erez and J. Michael Roney and Carl Rosenfeld and Armine Armand Rostomyan and Niharika Rout and Maria Barbara R{\'o}żańska and Guido Russo and Debashis Sahoo and Yoshihide Sakai and David A. Sanders and S. Sandilya and Anuj Sangal and Luka {\vS}antelj and P. Sartori and Junya Sasaki and Y. Sato and Vladimir Savinov and Bianca Scavino and Mitchell A. Schram and Harrison Schreeck and J. Schueler and C. Schwanda and Allan J. Schwartz and B. Schwenker and R. M. Seddon and Yoshiaki Seino and A. Selce and Katsumi Senyo and Ihn Sik Seong and Justine Serrano and M. E. Sevior and C. Sfienti and V. E. Shebalin and Cheng-ping Shen and Hiroshi Shibuya and J. -G. Shiu and Boris A. Shwartz and A. Sibidanov and Frank Simon and J. B. Singh and Sebastian Skambraks and K. M. Smith and R. Sobie and A. Soffer and Alexei Sokolov and Yu. V. Soloviev and Elena Solovieva and Stefano Spataro and Bjoern Spruck and M. Starivc and Slavorima Stefkova and Zachary Stottler and Roberto Stroili and Jan Strube and Jacek Stypuła and Mizuki Sumihama and Kazutaka Sumisawa and Takayuki Sumiyoshi and D. J. Summers and William Lawrence Sutcliffe and K. Suzuki and S. Y. Suzuki and H. Svidras and Makoto Tabata and M. Takahashi and Makoto Takizawa and Umberto Tamponi and S. Tanaka and Kiyoshi Tanida and Hikaru Tanigawa and Nanae Taniguchi and Y. R. Tao and Paul Taras and Francesco Tenchini and D. Tonelli and Ezio Torassa and Karim Trabelsi and Tohru Tsuboyama and Noritsugu Tsuzuki and Masaki Uchida and I. Ueda and Sadaharu Uehara and T. Ueno and Timofey Uglov and K. Unger and Y. Unno and Shoji Uno and P. Urquijo and Yutaka Ushiroda and Yu. V. Usov and Sven E. Vahsen and Raynette van Tonder and G. S. Varner and K. E. Varvell and Anna Viktorovna Vinokurova and L. Vitale and Vitaly Vorobyev and A. Vossen and B. Wach and E. Waheed and H. M. Wakeling and Kun Wan and Wat Wan Abdullah and B. Q. Wang and C. H. Wang and M. Wang and X. L. Wang and A. Warburton and M. Watanabe and Shoichi Watanuki and J. C. Webb and S. Wehle and M. Welsch and Christian Wessel and Jarosław Paweł Wiechczyński and P. Wieduwilt and Hendrik Windel and E. Won and L. J. Wu and X. P. Xu and B. Yabsley and S. Yamada and W. B. Yan and S. B. Yang and H Y Ye and J. Yelton and In Sung Yeo and J. H. Yin and Masanobu Yonenaga and Youngmin Yook and Keisuke Yoshihara and T. Yoshinobu and Chang-zheng Yuan and Gang Yuan and Yosuke Yusa and Laura Zani and J. Z. Zhang and Y. Zhang and Z. Zhang and V. N. Zhilich and J. Zhou and Q Zhou and X. Y. Zhou and Victoria Zhukova and V. Zhulanov and An{\vz}e Zupanc},
We present the first measurement of the time-integrated mixing probability χd using Belle II data collected at a center-of-mass (CM) energy of 10.58 GeV, corresponding to the mass of the Υ (4S) resonance, with an integrated luminosity of 34.6 fb−1 at the SuperKEKB e+e− collider. We reconstruct pairs of B mesons both of which decay to semileptonic final states. Using a novel methodology, we measure χd = 0.187 ± 0.010 (stat.) ± 0.019 (syst.), which is compatible with existing indirect and direct… Expand
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