大-Nc极限下非等色子有效Lagrangian：非等色子情形
高能物理 - 唯象学
2009-10-30 v1 高能物理 - 理论
摘要
presented for the nonet of pseudogoldstone bosons that appear in the large-Nc limit of QCD, including terms up to four derivatives and explicit symmetry breaking terms up to quadratic in the quark masses. The one-loop renormalization of the couplings is worked out using the heat-kernel technique and dimensional renormalization. The calculation is carried through for U_L(n_l) \otimes U_R(n_l), thus allowing for a generic number n_l of light quark flavours. The crucial advantages that the expansion in powers of 1/N_c bring about are discussed. Special emphasis is put in pointing out what features are at variance with the SU_L \otimes SU_R results when the singlet \eta' is included in the theory.
引用
@article{arxiv.hep-ph/9610549,
title = {Chiral Effective Lagrangian in the large-Nc limit: the nonet case},
author = {P. Herrera-Siklódy and J. I. Latorre and P. Pascual and J. Taron},
journal= {arXiv preprint arXiv:hep-ph/9610549},
year = {2009}
}
备注
41 pages, Latex