期刊
NUCLEAR PHYSICS A
卷 916, 期 -, 页码 1-29出版社
ELSEVIER
DOI: 10.1016/j.nuclphysa.2013.07.010
关键词
Chiral effective field theory; Baryon-baryon contact Lagrangian
资金
- DFG
- NSFC [110]
We construct the most general chiral effective Lagrangian for baryon-baryon contact interactions in flavor SU(3) up to order O(q(2)) using a covariant power counting. A subset of these contact terms contributes to the baryon baryon potential in chiral effective field theory. The Lorentz invariant effective Lagrangian is constructed to fulfill the invariance under charge conjugation, parity transformation, Hermitian conjugation and the local chiral symmetry group SU(3)(L) x SU(3)(R). Goldstone bosons and external fields are included as well, thus providing additional four-baryon contact vertices involving e.g. pseudoscalar mesons and/or photons. In order to eliminate the linearly dependent terms, we use the Fierz identities, the equations of motion, and a Cayley Hamilton relation for SU(3). As an application the baryon-baryon scattering contact potentials in low partial waves are considered. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据