arXiv:1404.5873·v2·High Energy Physics — Phenomenology
Pion structure in the nuclear medium
J. P. B. C. de Melo (Laboratório de Física Teórica e Computacional, Universidade Cruzeiro do Sul, SP, Brazil)🇧🇷 · K.Tsushima (International Institute of Physics, Federal University of Rio Grande do Norte)🇧🇷 · Bruno El-Bennich (Laboratório de Física Teórica e Computacional, Universidade Cruzeiro do Sul, SP, Brazil)🇧🇷 · E. Rojas (Laboratório de Física Teórica e Computacional, Universidade Cruzeiro do Sul, SP, Brazil)🇧🇷 · T. Frederico (Instituto Tecnológico da Aeronáutica/DCTA, São José dos Campos, SP, Brazil)🇧🇷
Abstract
Using the light-front pion wave function based on a Bethe-Salpeter amplitude model, we study the properties of the pion in symmetric nuclear matter. The pion model we adopt is well constrained by previous studies to explain the pion properties in vacuum. In order to consistently incorporate the constituent up and down quarks of the pion immersed in symmetric nuclear matter, we use the quark-meson coupling model, which has been widely applied to various hadronic and nuclear phenomena in a nuclear medium with success. We predict the in-medium modifications of the pion lectromagnetic form factor, charge radius and weak decay constant in symmetric nuclear matter.
Comments: Use revtex4, 7 figures. Title change. Revised text and figures. Accepted, Physical Review C (August, 2014)