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Preprint
Report number arXiv:2111.09405 ; BELLE2-CONF-PH-2021-012
Title Measurement of the inclusive semileptonic B meson branching fraction in 62.8 fb1 of Belle II data
Author(s) Belle-II Collaboration  Показване на всичките 579 автора
Imprint 2021-11-17
Number of pages 17
Note 17 pages, 1 figure. arXiv admin note: text overlap with arXiv:2110.02648
Subject category hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment KEK BF BELLE II
Abstract We report a measurement of the branching fraction of inclusive semileptonic B meson decays BXcν in Υ(4S)BB¯ data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e+e collider and corresponding to 62.8 fb1 of integrated luminosity. Only a charged lepton (electon or muon) is reconstructed and the signal yield is determined from a fit to the lepton momentum distribution in the center-of-mass frame of the colliding beams. Averaging the result in the electron and muon channels, we find B(BXcν)=(9.75±0.03(stat)±0.47(sys))%.
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Copyright/License preprint: (License: CC BY 4.0)



 


 Записът е създаден на 2023-08-09, последна промяна на 2025-01-01


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