Measurement of CP Violation in D0 Meson Decays at the CMS Experiment

被引：0

作者：

Sergeychik, V. S. ^{[1
]}

Polikarpov, S. M. ^{[1
]}

机构：

[1] Russian Acad Sci, Lebedev Phys Inst, Moscow 119991, Russia

来源：

BULLETIN OF THE LEBEDEV PHYSICS INSTITUTE | 2024年 / 51卷 / 11期

基金：

俄罗斯科学基金会;

关键词：

CP violation; heavy quark physics; flavor physics; heavy hadron physics; charm physics; electroweak interactions; CMS experiment;

D O I：

10.3103/S1068335624600682

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The paper describes the search results for CP violation in the D-0 -> (KSKS0)-K-0 decay. The analysis was performed using the proton-proton collision data with centre-of-mass energy of root s = 13 TeV, recorded by the CMS experiment at the Large Hadron Collider. The analyzed data sample contains about 10(10) events associated with production of charm hadrons, which allows performing precise measurements. The measured CP violation parameter is A(CP) (D-0 -> (KSKS0)-K-0) = (6.2 +/- 3.1 (stat.) +/- 0.2 (syst.) +/- 0.8 (A(CP) (D-0 -> K-S(0)pi(+)pi(-)))%, where the last uncertainty is due to the uncertainty in the reference channel asymmetry A(CP) (D-0 -> K-S(0)pi(+)pi(-)). The obtained results are consistent with no CP violation in the studied decay. This analysis is the first measurement of CP violation in charm sector at the CMS experiment.

引用

页码：439 / 444

页数：6

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