2021/10/31 by LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994 · 1 citation
Physics and Astronomy · #hep-ex
paper · pdf · doi:10.1007/jhep12(2021)141
published as JHEP 12 (2021) 141 · All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-033.html (LHCb public pages)
arxiv created 2022/01/07 · arxiv updated 2022/01/10
A combination of measurements sensitive to the CP violation angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between D0 and D0 mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN's Large Hadron Collider, are combined for the first time. This method provides an improvement on the precision of the charm mixing parameter y by a factor of two with respect to the current world average. The charm mixing parameters are determined to be x = (0.400 +0.052 -0.053)% and y = (0.630 +0.033 -0.030)%. The angle γ is found to be γ= (65.4 +3.8 -4.2)^∘ and is the most precise determination from a single experiment.