First flavor tagging calibration using 2019 Belle II data
High Energy Physics - Experiment
2020-08-07 v1
Abstract
We report on the first calibration of the standard Belle II -flavor tagger using the full data set collected at the resonance in 2019 with the Belle II detector at the SuperKEKB collider, corresponding to 8.7 fb of integrated luminosity. The calibration is performed by reconstructing various hadronic charmed -meson decays with flavor-specific final states. We use simulation to optimize our event selection criteria and to train the flavor tagging algorithm. We determine the tagging efficiency and the fraction of wrongly identified tag-side ~candidates from a measurement of the time-integrated mixing probability. The total effective efficiency is measured to be , which is in good agreement with the predictions from simulation and comparable with the best one obtained by the Belle experiment. The results show a good understanding of the detector performance and offer a basis for future calibrations.
Keywords
Cite
@article{arxiv.2008.02707,
title = {First flavor tagging calibration using 2019 Belle II data},
author = {Belle II Collaboration and F. Abudinén and I. Adachi and R. Adak and K. Adamczyk and P. Ahlburg and J. K. Ahn and H. Aihara and N. Akopov and A. Aloisio and F. Ameli and L. Andricek and N. Anh Ky and D. M. Asner and H. Atmacan and V. Aulchenko and T. Aushev and V. Aushev and T. Aziz and V. Babu and S. Bacher and S. Baehr and S. Bahinipati and A. M. Bakich and P. Bambade and Sw. Banerjee and S. Bansal and M. Barrett and G. Batignani and J. Baudot and A. Beaulieu and J. Becker and P. K. Behera and M. Bender and J. V. Bennett and E. Bernieri and F. U. Bernlochner and M. Bertemes and M. Bessner and S. Bettarini and V. Bhardwaj and B. Bhuyan and F. Bianchi and T. Bilka and S. Bilokin and D. Biswas and A. Bobrov and A. Bondar and G. Bonvicini and A. Bozek and M. Bračko and P. Branchini and N. Braun and R. A. Briere and T. E. Browder and D. N. Brown and A. Budano and L. Burmistrov and S. Bussino and M. Campajola and L. Cao and G. Caria and G. Casarosa and C. Cecchi and D. Červenkov and M. -C. Chang and P. Chang and R. Cheaib and V. Chekelian and C. Chen and Y. Q. Chen and Y. -T. Chen and B. G. Cheon and K. Chilikin and K. Chirapatpimol and H. -E. Cho and K. Cho and S. -J. Cho and S. -K. Choi and S. Choudhury and D. Cinabro and L. Corona and L. M. Cremaldi and D. Cuesta and S. Cunliffe and T. Czank and N. Dash and F. Dattola and E. De La Cruz-Burelo and G. De Nardo and M. De Nuccio and G. De Pietro and R. de Sangro and B. Deschamps and M. Destefanis and S. Dey and A. De Yta-Hernandez and A. Di Canto and F. Di Capua and S. Di Carlo and J. Dingfelder and Z. Doležal and I. Domínguez Jiménez and T. V. Dong and K. Dort and D. Dossett and S. Dubey and S. Duell and G. Dujany and S. Eidelman and M. Eliachevitch and D. Epifanov and J. E. Fast and T. Ferber and D. Ferlewicz and G. Finocchiaro and S. Fiore and P. Fischer and A. Fodor and F. Forti and A. Frey and M. Friedl and B. G. Fulsom and M. Gabriel and N. Gabyshev and E. Ganiev and M. Garcia-Hernandez and R. 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Nakao and H. Nakayama and H. Nakazawa and T. Nanut and Z. Natkaniec and A. Natochii and M. Nayak and G. Nazaryan and D. Neverov and C. Niebuhr and M. Niiyama and J. Ninkovic and N. K. Nisar and S. Nishida and K. Nishimura and M. Nishimura and M. H. A. Nouxman and B. Oberhof and K. Ogawa and S. Ogawa and S. L. Olsen and Y. Onishchuk and H. Ono and Y. Onuki and P. Oskin and E. R. Oxford and H. Ozaki and P. Pakhlov and G. Pakhlova and A. Paladino and T. Pang and A. Panta and E. Paoloni and S. Pardi and C. Park and H. Park and S. -H. Park and B. Paschen and A. Passeri and A. Pathak and S. Patra and S. Paul and T. K. Pedlar and I. Peruzzi and R. Peschke and R. Pestotnik and M. Piccolo and L. E. Piilonen and P. L. M. Podesta-Lerma and G. Polat and V. Popov and C. Praz and E. Prencipe and M. T. Prim and M. V. Purohit and N. Rad and P. Rados and R. Rasheed and M. Reif and S. Reiter and M. Remnev and P. K. Resmi and I. Ripp-Baudot and M. Ritter and M. Ritzert and G. Rizzo and L. B. Rizzuto and S. H. Robertson and D. Rodríguez Pérez and J. M. Roney and C. Rosenfeld and A. Rostomyan and N. Rout and M. Rozanska and G. Russo and D. Sahoo and Y. Sakai and D. A. Sanders and S. Sandilya and A. Sangal and L. Santelj and P. Sartori and J. Sasaki and Y. Sato and V. Savinov and B. Scavino and M. Schram and H. Schreeck and J. Schueler and C. Schwanda and A. J. Schwartz and B. Schwenker and R. M. Seddon and Y. Seino and A. Selce and K. Senyo and I. S. Seong and J. Serrano and M. E. Sevior and C. Sfienti and V. Shebalin and C. P. Shen and H. Shibuya and J. -G. Shiu and B. Shwartz and A. Sibidanov and F. Simon and J. B. Singh and S. Skambraks and K. Smith and R. J. Sobie and A. Soffer and A. Sokolov and Y. Soloviev and E. Solovieva and S. Spataro and B. Spruck and M. Starič and S. Stefkova and Z. S. Stottler and R. Stroili and J. Strube and J. Stypula and M. Sumihama and K. Sumisawa and T. Sumiyoshi and D. J. Summers and W. Sutcliffe and K. Suzuki and S. Y. Suzuki and H. Svidras and M. Tabata and M. Takahashi and M. Takizawa and U. Tamponi and S. Tanaka and K. Tanida and H. Tanigawa and N. Taniguchi and Y. Tao and P. Taras and F. Tenchini and D. Tonelli and E. Torassa and K. Trabelsi and T. Tsuboyama and N. Tsuzuki and M. Uchida and I. Ueda and S. Uehara and T. Ueno and T. Uglov and K. Unger and Y. Unno and S. Uno and P. Urquijo and Y. Ushiroda and Y. Usov and S. E. Vahsen and R. van Tonder and G. S. Varner and K. E. Varvell and A. Vinokurova and L. Vitale and V. Vorobyev and A. Vossen and E. Waheed and H. M. Wakeling and K. Wan and W. Wan Abdullah and B. Wang and C. H. Wang and M. -Z. Wang and X. L. Wang and A. Warburton and M. Watanabe and S. Watanuki and I. Watson and J. Webb and S. Wehle and M. Welsch and C. Wessel and J. Wiechczynski and P. Wieduwilt and H. Windel and E. Won and L. J. Wu and X. P. Xu and B. Yabsley and S. Yamada and W. Yan and S. B. Yang and H. Ye and J. Yelton and I. Yeo and J. H. Yin and M. Yonenaga and Y. M. Yook and T. Yoshinobu and C. Z. Yuan and G. Yuan and W. Yuan and Y. Yusa and L. Zani and J. Z. Zhang and Y. Zhang and Z. Zhang and V. Zhilich and Q. D. Zhou and X. Y. Zhou and V. I. Zhukova and V. Zhulanov and A. Zupanc},
journal= {arXiv preprint arXiv:2008.02707},
year = {2020}
}
Comments
28 pages, 10 figures