B→sll̄ in the minimal supergravity model

Toru Goto, Yasuhiro Okada, Yasuhiro Shimizu, Minoru Tanaka

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)4273-4289
Number of pages17
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number7
Publication statusPublished - 1997 Apr 1

ASJC Scopus subject areas

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


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