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

Francesca Borzumati, Christoph Greub, Tobias Hurth, Daniel Wyler

研究成果: Article査読

160 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号075005
ページ(範囲)1-20
ページ数20
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
62
7
DOI
出版ステータスPublished - 2000 10 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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