Search for the Decay B0 -> ppbar

Details Search for the Decay B0 -> ppbar Search for the Decay B0 -> ppbar

2004-03-02

arxiv.org/abs/hep-ex/0403003v1

Phys.Rev.D69:091503,2004

Physics

High Energy Physics

High Energy Physics - Experiment

Submitted to Phys. Rev. D (Rapid Communications)

Scientific paper

10.1103/PhysRevD.69.091503

We present the result of a search for the charmless two-body baryonic decay B^0 -> ppbar in a sample of 88 million Y(4S) -> BBbar decays collected by the BaBar detector at the SLAC PEP-II asymmetric-energy $B$ Factory. We use Cherenkov radiation to identify protons cleanly, and determine the signal yield with a maximum-likelihood fit technique using kinematic and topological information. We find no evidence for a signal and place a 90% confidence-level upper limit of BF(B^0 -> ppbar) < 2.7 x 10^-7.

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