Gluino contribution to radiative B decays: Organization of QCD corrections and leading order results

Francesca Borzumati, Christoph Greub, Tobias Hurth, Daniel Wyler

Research output: Contribution to journalArticle

167 Citations (Scopus)

Abstract

The gluino-induced contributions to the decay b→sγ are investigated in supersymmetric frameworks with generic sources of flavor violation. It is shown that, when QCD corrections are taken into account, the relevant operator basis of the standard model effective Hamiltonian gets enlarged to contain (i) magnetic and chromomagnetic operators with a factor of αs and weighted by a quark mass mb or mc, (ii) magnetic and chromomagnetic operators of lower dimensionality, also containing αs, and (iii) four-quark operators weighted by a factor αs2. Numerical results are given, showing the effects of the leading order QCD corrections on the inclusive branching ratio for b→sγ. Constraints on supersymmetric sources of flavor violation are derived.

Original languageEnglish
Article number075005
Pages (from-to)1-20
Number of pages20
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume62
Issue number7
Publication statusPublished - 2000 Oct 1
Externally publishedYes

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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