Low-energy pions in nuclear matter and ππ photoproduction within a BUU transport model

被引：29

作者：

Buss, O. ^{[1
]}

Alvarez-Ruso, L. ^{[1
]}

Muehlich, P. ^{[1
]}

Mosel, U. ^{[1
]}

机构：

[1] Univ Giessen, Inst Theoret Phys, D-6300 Giessen, Germany

来源：

EUROPEAN PHYSICAL JOURNAL A | 2006年 / 29卷 / 02期

关键词：

D O I：

10.1140/epja/i2006-10075-y

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：

A description of the low-energy scattering of pions and nuclei within a BUU transport model is presented. Implementing different scenarios of medium modifications, the mean free path of pions in nuclear matter at low momenta and pion absorption reactions on nuclei have been studied and compared to data and to results obtained via quantum-mechanical scattering theory. We show that even in a regime of a long pionic wavelength the semi-classical transport model is still a reliable framework for pion kinetic energies greater than approximate to 20-30 MeV. Results are presented on pi-absorption cross-sections in the regime of 10 MeV <= T-kin(pi) <= 130 MeV and on photon-induced pi pi production at incident beam energies of 400-500 MeV.

引用

页码：189 / 207

页数：19

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