Production of baryon resonances in collisions of 4He nuclei with carbon nuclei at a momentum of 4.2 GeV/c per nucleon

被引：6

作者：

Olimov, Kh. K. ^{[1
]}

机构：

[1] Uzbek Acad Sci, Inst Phys & Technol, Fizika Solntse Res & Prod Assoc, Tashkent 700084, Uzbekistan

来源：

PHYSICS OF ATOMIC NUCLEI | 2008年 / 71卷 / 01期

关键词：

D O I：

10.1134/S1063778808010109

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：

Under conditions of 4 pi geometry, Delta(0)- and Delta(++)-resonance production in collisions of He-4 nuclei with carbon nuclei at a momentum of 4.2 GeV/c per nucleon was investigated for the first time. The resonance masses and widths are estimated by analyzing the experimental and background invariant-mass distributions of (p pi(+/-)) pairs. Contributions to pion production from Delta-Resonance decays, as well as from direct pion production, are determined. The results are compared with corresponding data obtained for CC collisions at the same primary momentum of 4.2 GeV/c per nucleon. By and large, the results obtained here comply with the existence of a collective mechanism of delta-isobar excitation in nuclei.

引用

页码：93 / 97

页数：5

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