Nucleon-to-Δ axial transition form factors in relativistic baryon chiral perturbation theory

被引：26
|
作者：
Geng, L. S. [1 ]
Camalich, J. Martin
Alvarez-Ruso, L.
Vacas, M. J. Vicente
机构：
[1] Univ Valencia, CSIC, Dept Fis Teor, Valencia 46071, Spain
来源：
PHYSICAL REVIEW D | 2008年 / 78卷 / 01期
关键词：
D O I：
10.1103/PhysRevD.78.014011
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report a theoretical study of the axial nucleon-to-delta (1232) (N -> Delta) transition form factors up to one-loop order in relativistic baryon chiral perturbation theory. We adopt a formalism in which the Delta couplings obey the spin-3/2 gauge symmetry and, therefore, decouple the unphysical spin-1/2 fields. We compare the results with phenomenological form factors obtained from neutrino bubble-chamber data and in quark models.
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页数：12
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