The role of resonances in non-leptonic hyperon decays

Abstract

We examine the importance of resonances for the non-leptonic hyperon decays in the framework of chiral perturbation theory. Lower lying resonances are included into the effective theory. Integrating out the heavy degrees of freedom in the resonance saturation scheme generates higher order counterterms in the effective Lagrangian, providing an estimate of the pertinent coupling constants. A fit to the eight independent decay amplitudes that are not related by isospin symmetry is performed and reasonable agreement for both s- and p- waves is achieved.

16 pages, 2 figures

References in corpus (1)

• Charge asymmetry of heavy quarks at hadron colliders

Cited by in corpus (15)

• Herwig++ Physics and Manual
• Reexamination of The Standard Model Nucleon Electric Dipole Moment
• CP Violation in Hyperon Nonleptonic Decays within the Standard Model
• Hyperons in Two Flavor Chiral Perturbation Theory
• $\Lambda N\to NN$ weak interaction in effective field theory
• Non-leptonic hyperon weak decays in the Skyrme model revisited
• Hyperon Nonleptonic Decays in Chiral Perturbation Theory Reexamined
• Final state interactions in nonleptonic hyperon decays
• Resonances in weak nonleptonic Omega^- decay
• Nonleptonic Hyperon Decays with QCD Sum Rules
• Hyperon Nonleptonic Weak Decays Revisited
• SU(3) Chiral Effective Field Theories -- A Status Report --
• Analysis of the nonleptonic two-body decays of the $\Lambda$ hyperon
• Weak hyperon decays in heavy baryon chiral perturbation theory: Renormalization and applications
• Future Directions in Parity Violation: From Quarks to the Cosmos