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
收藏
页码：93 / 97
页数：5
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