Study of $B\to Λ\barΛK$ and $B\to Λ\barΛπ$

Details Study of $B\to Λ\barΛK$ and $B\to Λ\barΛπ$ Study of $B\to Λ\barΛK$ and $B\to Λ\barΛπ$

2005-03-27

arxiv.org/abs/hep-ph/0503264v2

Phys.Lett. B619 (2005) 305-312

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 2 figures, 2 tables, version to appear in Phys. Lett. B

Scientific paper

We study three-body charmless baryonic B decays of $B \to \Lambda\bar\Lambda P$ with $P=\pi$ and $K$ in the standard model. We find that the branching ratios of the $K$ modes are about one order of magnitude larger than those of the corresponding $\pi$ modes unlike the cases of $B\to p\bar p P$. Explicitly, we obtain that $Br(B^-\to \Lambda\bar \Lambda K^-)=(2.8\pm 0.2)\times 10^{-6}$ and $Br(\bar B^0 \to\Lambda\bar \Lambda \bar K^0)=(2.5\pm 0.3)\times 10^{-6}$. The former agrees well with the BELLE experimental measurement of $(2.91^{+0.90}_{-0.70}\pm 0.38)\times 10^{-6}$, while the latter should be seen at the ongoing B factories soon.

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