Study of the CKM angle γ sensitivity using flavor untagged Bs0 → (D)over-tilde(*)0φ decays

被引：4
|
作者：
Ao, D. [1 ]
Decamp, D. [2 ]
Qian, W. B. [1 ]
Ricciardi, S. [3 ]
Sazak, H. [4 ]
T'Jampens, S. [2 ]
Tisserand, V [4 ]
Wang, Z. R. [5 ]
Yang, Z. W. [5 ]
Zhang, S. N. [6 ]
Zhou, X. K. [1 ]
机构：
[1] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[2] Univ Grenoble Alpes, Univ Savoie Mt Blanc, CNRS, LAPP IN2P3, Annecy, France
[3] STFC Rutherford Appleton Lab, Didcot, Oxon, England
[4] Univ Clermont Auvergne, LPC, CNRS IN2P3, Clermont Ferrand, France
[5] Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China
[6] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
来源：
CHINESE PHYSICS C | 2021年 / 45卷 / 02期
基金：
中国国家自然科学基金;
关键词：
sensitivity study; CKM angle gamma; B-s(0) -> (D)over-tilde(()*()0)phi decays;
D O I：
10.1088/1674-1137/abd16d
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 sensitivity study on the measurement of the CKM angle gamma from B-s(0) -> (D) over tilde (()*()0)phi decays is conducted using the D-meson reconstructed in the quasi flavour-specific modes K pi, K3 pi, and K pi pi(0), as well as CP-eigenstate modes KK and pi pi, where the notation (D) over tilde (0) corresponds to a D-0 or (D) over bar (0) meson. The LHCb experiment is presented as a use case. A statistical uncertainty of approximately 8 degrees - 19 degrees can be achieved with the pp collision data collected in the LHCb experiment from 2011 to 2018. The sensitivity to gamma should be of the order 3 degrees - 8 degrees after accumulating 23 fb(-1) of pp collision data by 2025, whereas it is expected to improve further by 300 fb(-1) by the second half of the 2030 decade. The accuracy is dependent on the strong parameters r(B)(()*()) and delta(()(B)*()), which together with gamma describe the interference between the leading amplitudes of the B-s(0) -> (D) over tilde (()*()0)phi decays.
引用
收藏
页数：37
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