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Semileptonic [formula omitted] decays

Authors
Journal
Physics Letters B
0370-2693
Publisher
Elsevier
Publication Date
Volume
704
Issue
5
Identifiers
DOI: 10.1016/j.physletb.2011.09.065
Keywords
  • Phenomenology
Disciplines
  • Physics

Abstract

Abstract We study the four-body exclusive semileptonic baryonic B¯ decays of B−→pp¯ℓ−ν¯ℓ (ℓ=e,μ,τ) in the standard model. We find that their decay branching ratios are about (1.0,1.0,0.5)×10−4, respectively. In particular, the electron mode is close to the corresponding CLEOʼs upper limit of 5.2×10−3, while all results are about one or two orders of magnitude larger than the previous estimated values for the inclusive modes of B¯→BB¯′ℓν¯. Clearly, both B-factories of Belle and BaBar should be able to observe these exclusive four-body modes.

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