Heavy baryonic Λ b → Λη(′) decays

M. R. Ahmady, C. S. Kim, Sechul Oh, Chaehyun Yu

Research output: Contribution to journalArticle

6 Citations (Scopus)


We calculate the branching ratios of the hadronic Λb decays to η and η′ in the factorization approximation where the form factors are estimated via QCD sum rules and the pole model. Our results indicate that, contrary to B→Kη(′) decays, the branching ratios for Λb→Λη and Λb→Λη′ are more or less the same in the hadronic Λb transitions. We find that the anomaly contribution is crucial in Λb→Λη(′) decays. We obtain the branching ratio of Λb→Λη(′) to be 11.47(11.33)×10-6 in QCD sum rules, and 2.95(3.24)×10-6 in the pole model. We also consider the contribution of the charm content in the η′ production in Λb→Λ transition.

Original languageEnglish
Pages (from-to)203-210
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
Publication statusPublished - 2004 Sep 30

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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