Speakers
Description
B mesons are the lightest mesons which can decay to various final states containing different baryons. Up to now, the discrepancy between the inclusive branching fraction of all B meson decay modes with at least a couple of baryons in the final state, measured by ARGUS to be (6.8+−0.6)% , and the sum of exclusive baryonic channels, averaged on neutral and positive B mesons at less than 1%, represents an open issue. The measurement and comparison of exclusive branching fractions of baryonic B decays as well as studies on the dynamic of the decay, may allow better understanding of baryon production in B decays and, more generally, hadron fragmentation into baryons. We present here a search for the decay of a B meson in four baryons: B→pp¯pp¯ , not yet observed.
The data set consists of about 470 million BB¯ pairs collected with the BaBar detector at the SLAC National Accelerator Laboratory.
