B meson decays to baryons in the diquark model

Chia-Hung Chang, W. S. Hou

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Abstract

We study B meson decays to two charmless baryons in the diquark model, including strong and electroweak penguins as well as the tree operators. It is shown that penguin operators can enhance B → BsB̄ considerably, but affect B̄ → B12 only slightly, where B(1,2) and Bs are non-strange and strange baryons, respectively. The γ dependence of the decay rates due to tree-penguin interference is illustrated. In principle, some of the B sB̄ modes could dominate over B12 for γ > 90°, but in general the effect is milder than their mesonic counterparts. This is because the O6 operator can only produce vector but not scalar diquarks, while the opposite is true for O1 and O4. Predictions from the diquark model are compared to those from the sum rule calculation. The decays B̄ → Bss and inclusive baryonic decays are also discussed.

Original languageEnglish
Pages (from-to)691-699
Number of pages9
JournalEuropean Physical Journal C
Volume23
Issue number4
DOIs
Publication statusPublished - 2002 Apr 1

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ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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