In a sample of 467 million BB pairs collected with the BABAR detector at the PEP-II collider at SLAC we have observed the decay B0+cp0 and measured the branching fraction to be (194017014050)10−4, where the uncertainties are statistical, systematic, and the uncertainty on the +cpK−+ branching fraction, respectively. We determine an upper limit of 1510−6 at 90% C.L. for the product branching fraction (B0+c(2455)p)(+cpK−+). Furthermore, we observe an enhancement at the threshold of the invariant mass of the baryon-antibaryon pair.
Observation of the decay B0bar→Λc+ pbar pi0
PERUZZI, Ida Marena;BIASINI, Maurizio
2010
Abstract
In a sample of 467 million BB pairs collected with the BABAR detector at the PEP-II collider at SLAC we have observed the decay B0+cp0 and measured the branching fraction to be (194017014050)10−4, where the uncertainties are statistical, systematic, and the uncertainty on the +cpK−+ branching fraction, respectively. We determine an upper limit of 1510−6 at 90% C.L. for the product branching fraction (B0+c(2455)p)(+cpK−+). Furthermore, we observe an enhancement at the threshold of the invariant mass of the baryon-antibaryon pair.File in questo prodotto:
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