Chiral corrections to hyperon vector form factors
نویسندگان
چکیده
منابع مشابه
Chiral corrections to hyperon vector form factors.
We show that the leading SU(3)-breaking corrections to the ∆S = 1 f1 vector form factors of hyperons are O(ms) and O(m 3/2 s ), and are expected to be ∼ 20–30% by dimensional analysis. This is consistent with the Ademollo–Gatto theorem, in a sense that we explain. We compute the O(ms) corrections and a subset of the O(m 3/2 s ) corrections using an effective lagrangian in which the baryons are ...
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We present the complete calculation of the SU(3)-breaking corrections to the hyperon vector form factors up to O(p4) in the Heavy Baryon Chiral Perturbation Theory. Because of the Ademollo–Gatto theorem, at this order the results do not depend on unknown low energy constants and allow to test the convergence of the chiral expansion. We complete and correct previous calculations and find that O(...
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D. Guadagnolia, V. Lubiczb,c, G. Martinellia, M. Papinuttod, S. Simulac, G. Villadoro†a a Dipartimento di Fisica, Università di Roma “La Sapienza”, and INFN, Sezione di Roma, P.le A. Moro 2, I-00185 Rome, Italy b Dip. di Fisica, Università di Roma Tre, Via della Vasca Navale 84, I-00146 Rome, Italy c INFN, Sezione di Roma III, Via della Vasca Navale 84, I-00146 Rome, Italy d John von Neumann-In...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1993
ISSN: 0556-2821
DOI: 10.1103/physrevd.47.4975