In-medium pion valence distributions in a light-front model

被引：8
作者：
de Melo, J. P. B. C. [1 ]
Tsushima, K. [1 ]
Ahmed, I. [1 ,2 ]
机构：
[1] Univ Cruzeiro Sul, LFTC, BR-01506000 Sao Paulo, Brazil
[2] Quaidi I Azam Univ Campus, Natl Ctr Phys, Islamabad 45320, Pakistan
来源：
PHYSICS LETTERS B | 2017年 / 766卷
基金：
巴西圣保罗研究基金会;
关键词：
Pion; Nuclear medium; Light-front; Pion distribution amplitude; Parton distribution; QCD SUM-RULES; NUCLEON; LAGRANGIANS;
D O I：
10.1016/j.physletb.2017.01.004
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Pion valence distributions in nuclear medium and vacuum are studied in a light-front constituent quark model. The in-medium input for studying the pion properties is calculated by the quark-meson coupling model. We find that the in-medium pion valence distribution, as well as the in-medium pion valence wave function, are substantially modified at normal nuclear matter density, due to the reduction in the pion decay constant. (C) 2017 The Authors. Published by Elsevier B.V.
引用
收藏
页码：125 / 131
页数：7
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