Photoproduction of π+ p-pairs on the 16O nucleus and isobar configurations

被引：4

作者：

Glavanakov, I. V. ^{[1
]}

Grabmayer, P. ^{[2
]}

Krechetov, Yu. F. ^{[1
]}

Tabachenko, A. N. ^{[1
]}

机构：

[1] Natl Res Tomsk Polytech Univ, Inst Phys & Technol, Tomsk 634050, Russia

[2] Univ Tubingen, Inst Phys, D-72076 Tubingen, Germany

来源：

JETP LETTERS | 2013年 / 97卷 / 04期

关键词：

GROUND-STATE; COMPONENT; SEARCH;

D O I：

10.1134/S002136401304005X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The yield of the O-16(gamma, pi(+) p) reaction has been measured in the region of the excitation of the Delta(1232) isobar at high momentum transfers to the residual nuclear system. The experimental data are interpreted within the model taking into account manifestations of isobar configurations in the ground state of the O-16 nucleus. Direct and exchange mechanisms of the production of pions with emission of one and two nucleons, which follow from the structures of the density matrices for these reactions, have been considered. The probability of the production of the Delta-isobar in the ground state of the O-16 nucleus has been empirically estimated as P (Delta) = 0.019 +/- 0.003 +/- 0.003.

引用

页码：173 / 177

页数：5

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