The rare B⁰_d → φγ decays in the standard model and as a probe of R-parity violation

2003/05/29 by Xinqiang Li, Ya-Dong Yang, Gongru Lu +2 · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1140/epjc/s2004-01878-1

published as Eur.Phys.J. C36 (2004) 97-102 · References added. RPV Lambda' contributions are included

arxiv created 2003/05/29 · openalex publication_date 2004/06/23 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29

Abstract

We present the first study of the rare annihilation decay B⁰_d → ϕγ in the Standard Model. Using QCD factorization formalism, we find \cal B(B⁰_d →ϕγ)=3.6× 10^-12. The smallness of the decay rate in the Standard Model make the decay a sensitive probe of new physics contributions. As an example, we calculate the effects of R-parity violating couplings. Within the available upper bounds for |λ^''_i23λ^''_i12| and |λ^'_i32λ^'*_i12|, \cal B(B⁰_d →ϕγ) could be enhanced to order of 10^-9∼ 10^-8, which might be accessible at LHCB, B-TeV and the planning super high luminosity B factories at KEK and SLAC.

Citations

• B→φπandB0→φφin the standard model and new bounds onR-parity violation
• QCD Factorization forB→ππDecays: Strong Phases andCPViolation in the Heavy Quark Limit
• Supersymmetry at ordinary energies. Masses and conservation laws

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• Annihilation-type charmless radiative decays of B meson in non-universal Z′ model