Weak hyperon decays in heavy baryon chiral perturbation theory: Renormalization and applications

Details Weak hyperon decays in heavy baryon chiral perturbation theory: Renormalization and applications Weak hyperon decays in heavy baryon chiral perturbation theory: Renormalization and applications

2000-05-19

arxiv.org/abs/hep-ph/0005202v1

Phys.Rev. D62 (2000) 054020

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 2 figures

Scientific paper

10.1103/PhysRevD.62.054020

The complete renormalization of the weak Lagrangian to chiral order q^2 in heavy baryon chiral perturbation theory is performed using heat kernel techniques. The results are compared with divergences appearing in the calculation of Feynman graphs for the nonleptonic hyperon decay Lambda -> p pi^- and an estimate for the size of the counterterm contributions to the s-wave amplitudes in nonleptonic hyperon decays is given.

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