QCD corrections to b → sγγ and exclusive Bs → sγγ decay

Chia Hung V. Chang, Guey Lin Lin, York Peng Yao

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The short distance QCD corrections to b → sγγ are calculated in the leading logarithmic approximation. The equivalence of operator basis reduction for S-matrix elements by using the equations of motion or by proving a low energy theorem is discussed. We apply the above results to the exclusive Bs → γγ decay. The branching ratio of this decay is found to be 5 × 10-7 in the Standard Model. We also found that QCD corrections modify considerably the ratio between CP-even and CP-odd two-photon amplitudes.

Original languageEnglish
Pages (from-to)395-401
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number4
Publication statusPublished - 1997 Dec 25


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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