arXiv:1411.6713·v2·High Energy Physics — Phenomenology
Quark-antiquark Scattering Phase Shift and Meson Spectral Function in Pion Superfluid
Tao Xia🇨🇳 · Jin Hu🇨🇳 · Shijun Mao🇨🇳
Abstract
We study the quark-antiquark scattering phase shift and meson spectral function in the pion superfluid described by the Nambu--Jona-Lasinio model. The meson mixing in the pion superfluid changes dramatically the full scattering phase shift and spreads strongly the spectral function of some of the collective modes.
Comments: 20 pages, 9 figures. arXiv admin note: text overlap with arXiv:hep-ph/0503272, arXiv:hep-ph/0612320, arXiv:nucl-th/0702032 by other authors