Leading logarithmic QCD corrections to the Bs → γγ decay rate including long-distance effects through Bs → φγ → γγ

1997/04/30 by Gudrun Hiller, G. Hiller, E. O. İltan +1 · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0370-2693(97)00861-7

published as Phys.Lett. B409 (1997) 425-434 · 15 pages, 6 figures (require epsf.sty). last change in page number in reference list, accepted for publication in Phys. Lett B

openalex publication_date 1997/09/01 · arxiv created 1998/02/02 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present leading logarithmic QCD corrections to the decay B_s --> γγin the Standard Model. Further, the form factor F₁(0) of B_s --> ϕγis calculated in the framework of QCD sum rules and found to be in agreement with the result existing in the literature. Using Vector Meson Dominance model, the amplitude for B_s --> ϕγ-->γγis calculated as an estimate of the O₇-type contributions to the long-distance effects in the B_s --> γγdecay. The resulting branching ratio B(B_s --> γγ)_SD+LD_O7 is analysed in view of its strong dependence on the non-perturbative parameter Λ_s, describing bound state effects, and the renormalization scale μ. .

Citations

• Review of particle properties

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