Measurement of the charm-mixing parameter yCP

被引：0
|
作者：
Capriotti, L. [1 ,2 ]
机构：
[1] Alma Mater Studiorum Univ Bologna, Bologna, Italy
[2] INFN, Sez Bologna, Bologna, Italy
来源：
NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS | 2021年 / 44卷 / 2-3期
关键词：
D O I：
10.1393/ncc/i2021-21035-4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The study of CP violation in charm mixing is of great interest, mainly after the recent observation of CP violation in neutral charm decays. A prospect for a measurement of y(CP) is presented, making use of the D-0 -> KK, D-0 -> pi pi and D-0 -> K pi decays, reconstructed in data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13TeV, corresponding to 6 fb(-1) of integrated luminosity. The D-0 mesons will be required to come from semimuonic B decays. The data analysis will be performed by dividing the dataset into exclusive D-0 decay-time bins, where the signal-yields ratios N(KK)/N(K pi) and N(pi pi)/N(K pi) will be extracted to measure y(CP). The analysis aims at improving the precision of about a factor of two compared to the previous LHCb measurement.
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