1. Establishing CP violation in $b$-baryon decays
- Author
-
Yu, Ji-Xin, Han, Jia-Jie, Li, Ya, Li, Hsiang-nan, Xiao, Zhen-Jun, and Yu, Fu-Sheng
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Experiment - Abstract
The $CP$ violation (CPV) in the baryon system has not yet been definitively established. We demonstrate that individual partial-wave CPV in the $\Lambda_b\to p\pi^-,pK^-$ decays can exceed $10\%$, but the destruction between different partial waves results in small net direct CPV as observed in current experiments. There is thus high possibility of identifying CPV in $b$-baryon decays through measurements of partial-wave CPV. The above observation is supported by the first full QCD calculation of two-body hadronic $\Lambda_b$ baryon decays with controllable uncertainties in the perturbative QCD formalism., Comment: 5 pages, 2 figures,4 tables
- Published
- 2024