arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0807.0353nucl-ex
收藏

4.2A GeV C+Ta碰撞中的两粒子方位角关联

Two Particle Azimuthal Correlations in 4.2A GeV C+Ta Collisions

Lj. Simic, O. Jotanovic, J. Milosevic, I. Mendas

摘要:

利用JINR Dubna同步相位加速器上曝光的2-m丙烷泡室,研究了4.2AGeV C+Ta碰撞中两粒子的方位角关联.分析了质子和负π介子的关联,并研究了它们与碰撞中心性、快度和快度差的关系。结果表明,质子表现出较弱的背靠背关联,而负π介子则表现出并排关联。限制两个质子的目标或弹丸碎裂区域,并排的相关性观察质子也。利用两粒子关联函数,进行流分析,确定定向流强度,而无需对反应平面进行逐事件估计。

英文摘要:

Two particle azimuthal correlations are studied in 4.2A GeV C+Ta collisions observed with the 2-m propane bubble chamber exposed at JINR Dubna Synchrophasotron. The correlations are analyzed both for protons and negative pions, and their dependence on the collision centrality, rapidity and rapidity difference is investigated. It is found that protons show a weak back-to-back correlations, while a side-by-side correlations are observed for negative pions. Restricting both protons to the target or projectile fragmentation region, the side-by-side correlations are observed for protons also. Using the two particle correlation function, the flow analysis is performed and intensity of directed flow is determined without event-by event estimation of the reaction plane.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑