The CP violations and branching ratios for B_c⁺→ D_(s)⁺π⁺π^-(K⁺K^-) from interference of the vector mesons in Perturbative QCD

2025/02/05 by Kun Shuai Ye, Ye, Kun Shuai, Gang Lü +6
Physics and Astronomy · #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Black Holes and Theoretical Physics

paper · pdf · doi:10.48550/arxiv.2502.02800

Abstract

Within the framework of the perturbative QCD approach utilizing K_T factorization, we have investigated the CP violations and branching ratios in the decay processes of B_c⁺→ D_(s) ⁺V(V→π⁺π^-) and B_c⁺→ D_(s)⁺V(V→ K⁺K^-), where V denotes three vector mesons ρ⁰, ω, and ϕ. During the V→ π⁺π^- and V→ K⁺K^- decay processes, we incorporated the ρ⁰-ω-ϕ mixing mechanism to describe the amplitudes of these quasi-two-body decay processes. Within the interference regime of the three vector particles, we observed distinct changes in both CP violations and branching ratios. Furthermore, our study presents evidence for local CP violations and branching ratios that warrants further investigation through experiments.

Related

• Direct CP violation in B_s → K⁺K^- K⁺K^- decay process induced by interferences of the intermediate vector particles
• Study of Kπ final states from four-body deacy of B_s meason under perturbation QCD
• Resonant contribution of the three-body decay process B_s→ K⁺K^- P in perturbation QCD
• Quasi-two-body decays B_c → K^* h → K πh in the perturbative QCD
• Quasi-two-body decays B_(s)→ K^*γ→ Kπγ in perturbative QCD approach