Search for B^0-> p p-bar, Lambda Lambda-bar and B^+ -> p Lambda-bar at Belle

Details Search for B^0-> p p-bar, Lambda Lambda-bar and B^+ -> p Lambda-bar at Belle Search for B^0-> p p-bar, Lambda Lambda-bar and B^+ -> p Lambda-bar at Belle

2007-03-30

arxiv.org/abs/hep-ex/0703048v1

Phys.Rev.D75:111101,2007

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 2 figures, submitted to PRD

Scientific paper

10.1103/PhysRevD.75.111101

We report on a new search for two-body baryonic decays of the B meson. Improved sensitivity compared to previous Belle results is obtained from 414 fb^-1 of data that corresponds to 449 million B B-bar pairs, which were taken on the Upsilon(4S) resonance and collected with the Belle detector at the KEKB e^+e^- collider. No significant signals are observed and we set the 90% confidence level upper limits: Br(B^0-> p pbar) <1.1X10^-7, Br(B^0-> Lambda Lambda-bar) < 3.2X10^-7 and Br(B^+-> p Lambda-bar) < 3.2X10^-7.

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