Measurement of the weak mixing phase φs through time-dependent CP-violation in Bs0 → J/ψφ decays in the ATLAS detector

被引：0
作者：
Nikolaenko, Vladimir [1 ]
机构：
[1] NRC Kurchatov Inst, Inst High Energy Phys, Protvino 142281, Moscow Region, Russia
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2020年 / 35卷 / 34-35期
基金：
英国科学技术设施理事会;
关键词：
B physics; CP violation; flavor physics;
D O I：
10.1142/S0217751X20440066
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A measurement of B-s decay parameters using data collected by the ATLAS detector in pp collisions at 13 TeV in 2015-2017 is performed. Integrated luminosity of this sample is 80.5 fb(-1). The measurement of physical parameters are statistically combined with results obtained from Run 1 data at 7 and 8 TeV. The measured value of CP-violating phase phi(s) = -0.076 +/- 0.034(stat.)+/- 0.019 (syst:) is obtained, which has significantly better precision in comparison with Run 1 result. Precision of other physical parameters is also improved, including the decay width difference Delta Gamma. Further improvement is expected from the use of full Run 2 statistics, as well as from modifications in the analysis.
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页数：9
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