The Decay Omega^- -> Xi^- pi^+ pi^- in Chiral Perturbation Theory

Abstract

We study the decay Omega^- -> Xi^- pi^+ pi^- in heavy-baryon chiral perturbation theory. At leading order, the decay is completely dominated by the Xi^{*0}(1530) intermediate state, and the predicted rate and Xi^-pi^+ mass distribution are in conflict with currently available data. It is possible to resolve this conflict by considering additional contributions at next-to-leading order.

arXiv comment12 pages, 5 figures

References in corpus (6)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Strong and Electromagnetic Decays of the Baryon Decuplet
• Hyperon Nonleptonic Decays in Chiral Perturbation Theory Reexamined
• Weak Nonleptonic Omega Decay in Chiral Perturbation Theory
• ${\Omega }^{-}$ Hyperon Decay Modes with the HyperCP Experiment at Fermilab

Cited by in corpus (2)

• Measurements of the absolute branching fractions of ${\Omega }^{-}$ decays and test of the $\Delta I=1/2$ rule
• Study of the rare hyperon decay Omega \to Xi π^+ π^-