On the determination of the pion effective mass in nuclei from pionic atoms

被引：25

作者：

Friedman, E ^{[1
]}

Gal, A ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

来源：

PHYSICS LETTERS B | 1998年 / 432卷 / 3-4期

基金：

以色列科学基金会;

关键词：

pionic atoms; deeply bound pionic states; pion-nucleus potential; pion effective mass;

D O I：

10.1016/S0370-2693(98)00655-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The binding energies of the deeply bound 1s and 2p states in pionic atoms of Pb-207, recently established experimentally in the Pb-208(d,He-3) reaction, have been used by several groups to derive the pion effective mass in nuclear matter. We show that these binding energies are fully consistent with 'normal' pionic atoms and that the real part of the pion-nucleus potential at the center of Pb-207 is 28 +/- 3 MeV and not 20 MeV as suggested previously. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：235 / 240

页数：6

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