A Study of B+->p pbar K+ and a Search for a Theta*++ Pentaquark Candidate in B Decay
Abstract
A study of the decay B+->ppbarK+ is performed using 81fb-1 of data collected at the Upsilon(4S) with the BaBar detector at PEP-II. The branching fraction of B+->ppbarK+ is measured to be (6.7+/-0.9+/-0.6)x10-6. An upper limit on the branching fraction of B+->Theta*++pbar, where Theta*++ is a narrow state decaying to pK+, is set to be 1.5x10-7 for 1.43<m(Theta*++)<1.85GeV/c2 at 90% confidence level. All results are preliminary.
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