B-flavor tagging at Belle II
Abudinén, F. ; Akopov, N.; Aloisio, A.; Babu, V.; Banerjee, Sw; Bauer, M. 1; Bennett, J. V.; Bernlochner, F. U.; Bessner, M.; Bettarini, S.; Bilka, T.; Bilokin, S.; Biswas, D.; Bodrov, D.; Borah, J.; Bračko, M.; Branchini, P.; Budano, A.; Campajola, M.;
Abstract:
We report on new flavor tagging algorithms developed to determine the quark-flavor content of bottom ( ) mesons at Belle II. The algorithms provide essential inputs for measurements of quark-flavor mixing and charge-parity violation. We validate and evaluate the performance of the algorithms using hadronic decays with flavor-specific final states reconstructed in a data set corresponding to an integrated luminosity of 62.8 fb−1
, collected at the resonance with the Belle II detector at the SuperKEKB collider. We measure the total effective tagging efficiency to be
εeff=(30.0±1.2(stat)±0.4(syst))%
for a category-based algorithm and
εeff=(28.8±1.2(stat)±0.4(syst))%
for a deep-learning-based algorithm.
, collected at the resonance with the Belle II detector at the SuperKEKB collider. We measure the total effective tagging efficiency to be
εeff=(30.0±1.2(stat)±0.4(syst))%
for a category-based algorithm and
εeff=(28.8±1.2(stat)±0.4(syst))%
for a deep-learning-based algorithm.
| Zugehörige Institution(en) am KIT | Institut für Experimentelle Teilchenphysik (ETP) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsmonat/-jahr | 04.2022 |
| Sprache | Englisch |
| Identifikator | ISSN: 1434-6052 KITopen-ID: 1000144808 |
| Erschienen in | The European Physical Journal C |
| Verlag | Springer-Verlag |
| Band | 82 |
| Heft | 4 |
| Seiten | Article: 283 |
| Bemerkung zur Veröffentlichung | Gefördert durch SCOAP3 |
| Vorab online veröffentlicht am | 01.04.2022 |
| Nachgewiesen in | arXiv Dimensions Web of Science Scopus |