Elastic $\pi\pi$ scattering to two loops

J. Bijnens; G. Colangelo; G. Ecker; J. Gasser; M. E. Sainio

doi:10.1016/0370-2693(96)00165-7

Elastic $\pi\pi$ scattering to two loops

高能物理 - 唯象学 2008-11-26 v1 核理论

作者: J. Bijnens , G. Colangelo , G. Ecker , J. Gasser , M. E. Sainio

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摘要

We evaluate analytically the elastic $\pi\pi$ scattering amplitude to two loops in chiral perturbation theory and give numerical values for the two $S$ --wave scattering lengths and for the phase shift difference $\delta_0^0-\delta_1^1$ .

关键词

chiral perturbation theory scattering

引用

@article{arxiv.hep-ph/9511397,
  title  = {Elastic $\pi\pi$ scattering to two loops},
  author = {J. Bijnens and G. Colangelo and G. Ecker and J. Gasser and M. E. Sainio},
  journal= {arXiv preprint arXiv:hep-ph/9511397},
  year   = {2008}
}

备注

10 pages, LaTeX, uses epsfig.sty, one postscript picture included. Full postscript file available at http/www.nordita.dk/locinfo/preprints/95077.ps.gz

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