We present results of a search for the decays B0→ℓ+ℓ-γ (ℓ=e or μ). The search is performed using 320×10^6 BB̅ pairs collected at the Υ(4S) resonance with the BABAR detector at the PEP-II B Factory at SLAC. We find no significant signal and set the following branching fraction upper limits at the 90% confidence level: B(B0→e+e-γ)<1.2×10-7 and B(B0→μ+μ-γ)<1.6×10-7.
Search for the decays B0→e+e-γ and B0→μ+μ-γ
SIMI, GABRIELE;GAZ A;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2008
Abstract
We present results of a search for the decays B0→ℓ+ℓ-γ (ℓ=e or μ). The search is performed using 320×10^6 BB̅ pairs collected at the Υ(4S) resonance with the BABAR detector at the PEP-II B Factory at SLAC. We find no significant signal and set the following branching fraction upper limits at the 90% confidence level: B(B0→e+e-γ)<1.2×10-7 and B(B0→μ+μ-γ)<1.6×10-7.File in questo prodotto:
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