Search for the Decays B0->e+e-gamma and B0->mu+mu-gamma

Details Search for the Decays B0->e+e-gamma and B0->mu+mu-gamma Search for the Decays B0->e+e-gamma and B0->mu+mu-gamma

2007-06-19

arxiv.org/abs/0706.2870v1

Phys.Rev.D77:011104,2008

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 6 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevD.77.011104

We present results of a search for the decays $B^0 \to \ell^+\ell^-\gamma$ ($\ell=e$, $\mu$). The search is performed using $320\times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ 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: $\mathcal{B}(B^0\to e^+e^-\gamma)<1.2\times 10^{-7}$ and $\mathcal{B}(B^0\to \mu^+\mu^-\gamma)<1.5\times 10^{-7}$.

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