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 1807.10072hep-exnucl-ex
收藏

用ALICE测量的$\sqrt{s_{\rm NN}}=2.76$ TeV上Pb与$-$ Pb碰撞中的π-K介子飞秒观测

Pion-kaon femtoscopy in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV measured with ALICE

Ashutosh Kumar Pandey

摘要:

在LHC上测量了$\sqrt{s_{\rm NN}}=2.76$ TeV的Pb-$-$-Pb碰撞中不同电荷组合的带电π介子和K介子之间的飞秒关联。在不同的中心性区间中研究了外长对静止系中的三维π-K介子($π-{\rm K}$)关联函数和双比。提取了$π-{\rm K}$飞秒源尺寸参数($R_{\rm out}$)和发射不对称性($μ_{\rm out}$)。我们观察到,从外围事件到中心事件,系统的平均源尺寸和π介子与K介子之间的发射不对称性增加。

英文摘要:

Femtoscopic correlations between charged pions and kaons for different charge combinations are measured in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV with ALICE at the LHC. The three-dimensional pion-kaon ($π-{\rm K}$) correlation functions and double ratios in the out-side-long pair rest frame are studied in different centrality bins. The $π-{\rm K}$ femtoscopic source size parameter ($R_{\rm out}$) and emission asymmetry ($μ_{\rm out}$) are extracted. It is observed that the average source size of the system and the emission asymmetry between pions and kaons increase from peripheral to central events.

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。

↑