Search for decays of B0 mesons into pairs of charged leptons: B0->e+e-, B0->mu+mu-, B0->e+-mu-+

Details Search for decays of B0 mesons into pairs of charged leptons: B0->e+e-, B0->mu+mu-, B0->e+-mu-+ Search for decays of B0 mesons into pairs of charged leptons: B0->e+e-, B0->mu+mu-, B0->e+-mu-+

2004-08-19

arxiv.org/abs/hep-ex/0408096v1

Phys.Rev.Lett.94:221803,2005

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 7 postscript figues, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.94.221803

We present a search for the decays B0->e+e-, B0->mu+mu-, and B0->e+- mu-+ in data collected at the Y(4S) resonance with the Babar detector at the SLAC B Factory. Using a data set of 111 fb^-1, we find no evidence for a signal in any of the three channels investigated and set the following branching fraction upper limits at the 90% confidence level: B(B0->e+e-)< 6.1 x 10^-8, B(B0->mu+mu-) < 8.3 x 10^-8, and B(B0->e+-mu-+) < 18 x 10^-8.

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