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Computation of the $p^6$ order low-energy constants with tensor sources

High Energy Physics - Phenomenology 2013-05-30 v3

Abstract

We present the results of calculations of the p4p^4 and p6p^6 order low-energy constants for the chiral Lagrangian with tensor sources for both two and three flavors of pseudoscalar mesons. This is a generalization of our previous work on similar calculations without tensor sources in terms of the quark self-energy Σ(p2)\Sigma(p^2), based on the first principle derivation of the low-energy effective Lagrangian and computation of the low-energy constants with some rough approximations. With the help of partial integration and some epsilon relations, we find that some p6p^6 order operators with tensor sources appearing in the literature are related to each other. That leaves 98 independent terms for nn-flavor, 92 terms for three-flavor, and 65 terms for two-flavor cases. We also find that the odd-intrinsic-parity chiral Lagrangian with tensor sources cannot independently exist in any order of low-energy expansion.

Keywords

Cite

@article{arxiv.1203.0712,
  title  = {Computation of the $p^6$ order low-energy constants with tensor sources},
  author = {Shao-Zhou Jiang and Qing Wang},
  journal= {arXiv preprint arXiv:1203.0712},
  year   = {2013}
}

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29 pages