Deeply bound pionic states and the effective pion mass in nuclear systems

被引：47

作者：

Waas, T ^{[1
]}

Brockmann, R ^{[1
]}

Weise, W ^{[1
]}

机构：

[1] UNIV MAINZ,INST KERNPHYS,D-6500 MAINZ,GERMANY

来源：

PHYSICS LETTERS B | 1997年 / 405卷 / 3-4期

关键词：

pionic atoms; deeply bound pionic states of nuclei; pion-nucleus optical potential; effective pion mass in nuclear matter; chiral symmetry;

D O I：

10.1016/S0370-2693(97)00643-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that the s-wave pion-nuclear potential which reproduces the deeply bound pionic states in Pb, recently discovered at GSI, is remarkably close to the one constructed directly from low energy theorems based on chiral symmetry. Converting this information into an effective pion mass we find m(pi)*/m(pi) similar or equal to 1.13 in the center of the Pb nucleus, and m(pi)*/m(pi) similar or equal to 1.07 in symmetric nuclear matter. (C) 1997 Elsevier Science B.V.

引用

页码：215 / 218

页数：4

共 20 条

[1] SATURATION EFFECTS IN PIONIC ATOMS AND THE PI(-)-NUCLEUS OPTICAL-POTENTIAL [J].