Branching Fractions and CP Asymmetries of B --> K₀*(1430) rho and B --> K₀^*(1430) phi Decays in the Family Nonuniversal Z' Model

2012/06/19 by Ying Li, Li, Ying, En-Lei Wang +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1206.4106

openalex publication_date 2012/06/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

In this work, within the QCD factorization approach, we investigate the branching fractions and CP asymmetries of decays B → K₀^*(1430)ρ and B → K₀^*(1430)ϕ under two different scenarios both in the standard model and the family nonuniversal Z^′ model. We find that the annihilation terms play crucial roles in these decays and lead to the main uncertainties. For decays B^- → K₀^*- (1430)ρ⁰ (ω), the new Z^′ boson could change branching fractions remarkably. However, for other decays, its contribution might be clouded by large uncertainties from annihilations. Unfortunately, neither the standard model nor Z^′ model can reproduce all experimental data under one certain scenario. We also noted that the CP asymmetries of B^-→ K₀^*-(1430) ρ⁰ (ω) could be used to identify theK₀^*(1430) meson and search for the new physics contribution.

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