A novel observable for $C\!P$ violation in multi-body decays and its application potential to charm and beauty meson decays

Zhen-Hua Zhang

doi:10.1016/j.physletb.2021.136537

paper

A novel observable for $C P$ violation in multi-body decays and its application potential to charm and beauty meson decays

arXiv:2102.12263 · doi:10.1016/j.physletb.2021.136537

Abstract

A novel observable measuring the $C P$ asymmetry in multi-body decays of heavy mesons, which is called the forward-backward asymmetry induced $C P$ asymmetry (FBI- $C P$ A), $A_{C P}^{F B}$ , is introduced. This observable has the dual advantages that 1) it can isolate the $C P$ asymmetry associated with the interference of the $S$ - and $P$ -wave amplitude from that associated with the $S$ - or $P$ -wave amplitude alone; 2) it can effectively almost double the statistics comparing to the conventionally defined regional $C P$ asymmetry. We also suggest to perform the measurements of FBI- $C P$ A in some three-body decay channels of charm and beauty mesons.

13 pages, accepted for publication in PLB, title changed

A novel observable for CP violation in multi-body decays and its application potential to charm and beauty meson decays

Abstract

A novel observable for $C P$ violation in multi-body decays and its application potential to charm and beauty meson decays