Abstract
We have searched for the baryon-containing radiative penguin decays B -→Λp̄γ and B-→ Σ0-pγ, using a sample of 9.7 × 106 BB̄ events collected at the Y(45) with the CLEO detector. We find no evidence for either, and set 90% confidence level upper limits of B(B -→Λp̄γ) + 0.3B(B -→Σ0-p̄γ)]Eγ >2.0 GeV<3.3×10-6, [B(B-→Σ 0-p̄γ) + 0-4B(B-→Λp̄γ)] Eγ>2.0Gev<6.4×106. From the latter, we estimate B(B →Xsγy,Xs containing baryons) Eγ>2.0 GeV<3.8×10-5. This limit implies upper limits on corrections to CLEO's recent measurement of branching fraction, mean photon energy, and variance in photon energy from b→sγ that are less than half the combined statistical and systematic errors quoted on these quantities.
Original language | English (US) |
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Article number | 011102 |
Journal | Physical Review D |
Volume | 68 |
Issue number | 1 |
DOIs | |
State | Published - 2003 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics