B→sll̄ in the minimal supergravity model

Toru Goto, Yasuhiro Okada, Yasuhiro Shimizu, Minoru Tanaka

研究成果: Article査読

120 被引用数 (Scopus)

抄録

The b→sl+l- process is studied in the minimal supergravity model in detail. Taking into account the long-distance contributions from the cc̄ resonances, we calculate the branching ratio and the lepton forward-backward asymmetry in this model. We find that there is a strong correlation between the branching ratios of b-→sγ and b→sl+/- processes and that the interference effect can change the b→sl+l- branching ratio in the off-resonance regions by up to ±15% depending on the relative phase between the long- and short-distance contributions. Using various phenomenological constraints including the branching ratio of b→s γ, we show that there are regions in the parameter space where the branching ratio of b→sl+l- is enhanced by about 50% compared to the standard model (SM). We also show that the branching ratio of b→s ν ν + ̄ is reduced at most by 10% from the SM prediction.

本文言語English
ページ(範囲)4273-4289
ページ数17
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
55
7
出版ステータスPublished - 1997 4月 1

ASJC Scopus subject areas

  • 数理物理学
  • 物理学および天文学(全般)
  • 核物理学および高エネルギー物理学
  • 物理学および天文学(その他)

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