Isospin odd pi K scattering length
高能物理 - 唯象学
2011-07-19 v1
摘要
We make use of the chiral two-loop representation of the pi K scattering amplitude [J. Bijnens, P. Dhonte and P. Talavera, JHEP 0405 (2004) 036] to investigate the isospin odd scattering length at next-to-next-to-leading order in the SU(3) expansion. This scattering length is protected against contributions of m_s in the chiral expansion, in the sense that the corrections to the current algebra result are of order M_pi^2. In view of the planned lifetime measurement on pi K atoms at CERN it is important to understand the size of these corrections.
引用
@article{arxiv.hep-ph/0507323,
title = {Isospin odd pi K scattering length},
author = {J. Schweizer},
journal= {arXiv preprint arXiv:hep-ph/0507323},
year = {2011}
}
备注
11 pages