Deeply bound 1s and 2p pionic states in 205Pb and effective pion mass in nuclear matter

被引：0

作者：

Geissel, H ^{[1
]}

Gilg, H ^{[1
]}

Gillitzer, A ^{[1
]}

Hayano, RS ^{[1
]}

Hirenzaki, S ^{[1
]}

Itahashi, K ^{[1
]}

Iwasaki, M ^{[1
]}

Kienle, P ^{[1
]}

Münch, M ^{[1
]}

Münzenberg, G ^{[1
]}

Schott, W ^{[1
]}

Suzuki, K ^{[1
]}

Tomono, D ^{[1
]}

Weick, H ^{[1
]}

Yamazaki, T ^{[1
]}

Yoneyama, T ^{[1
]}

机构：

[1] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany

来源：

NUCLEAR PHYSICS IN THE 21ST CENTURY | 2002年 / 610卷

关键词：

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Recently we have succeeded in observing the 1s and 2p bound pionic states in Pb-205 nucleus as well separated peaks in the excitation spectrum of the Pb-206(d,He-3) reaction. The observed spectrum agreed quite well with the theoretical prediction where the formation cross section was calculated for the deeply bound pionic states [1]. These states are accommodated in proximity to the nuclear surface as halo states in a potential provided by the attractive Coulomb and the repulsive core. The binding energies and the widths were precisely determined, and the values were used to deduce the unknown s-wave part of the pi-nucleus interaction and to translate it to the effective pion mass in nuclear matter.

引用

页码：1019 / 1023

页数：5

共 45 条

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