Final state interaction effect in pure annihilationBs→ρρdecay

2014/11/18 by Mohammad Rahim Talebtash, Hossein Mehraban
Physics and Astronomy · #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics #hep-ph

paper · pdf · doi:10.1088/0031-8949/89/12/125301

published as 2014 Phys. Scr. 89 125301

openalex publication_date 2014/11/18 · arxiv created 2014/11/19 · arxiv updated 2014/11/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We analyzed the process of B_s→ ρ ρ decay in QCD factorization (QCDF) and final state interaction (FSI) effects. In QCDF for this decay we have only the annihilation graph and we expected small Branching ratio. Then we considered FSI effect as a sizable correction where the intermediate states are π⁰π⁰, π⁺π^-, K⁰K⁰ and K⁺K^- mesons. To consider the amplitudes of these intermediate states, QCDF approach was used. The experimental branching ratio of B_s→ ρρ is less than 3.20× 10^-4 and our result is 1.08 × 10^-9 and 3.29 ×10^-4 from QCDF and FSI, respectively.

Citations

• Review of Particle Physics
• Decays ofBmesons to two pseudoscalars in broken SU(3) symmetry
• QCD factorization in B→πK, ππ decays and extraction of Wolfenstein parameters
• D→ππ decays with final state interactions