Search for the rare decay B to pi l+ l-

Details Search for the rare decay B to pi l+ l- Search for the rare decay B to pi l+ l-

2007-03-09

arxiv.org/abs/hep-ex/0703018v2

Phys.Rev.Lett.99:051801,2007

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 1 postscript figure; corrected typos, published in PRL

Scientific paper

10.1103/PhysRevLett.99.051801

We have performed a search for the flavor-changing neutral-current decays B --> pi l+l-, where l+l- is either e+e- or mu+mu-, using a sample of 230 million Y(4S)-->BBbar decays collected with the BABAR detector. We observe no evidence of a signal and measure the upper limit on the isospin-averaged branching fraction to be BF(B --> pi l+ l-) < 9.1 x 10^{-8} at 90% confidence level. We also search for the lepton-flavor--violating decays B --> pi e mu and measure an upper limit on the isospin-averaged branching fraction of BF(B --> pi e mu) < 9.2 x 10^{-8} at 90% confidence level.

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