大型强子对撞机与ALICE高能核碰撞中的轻(反)核产生

C. Pinto
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引用次数: 0

摘要

在超相对论能量下测量pp、p-A和A-A碰撞的(反)核产生对理解强子化非常重要。ALICE出色的跟踪和粒子识别能力使其成为LHC中最适合研究高能强子碰撞中产生的光(反)核的探测器。在ALICE中以中速($|\eta|<$0.9)成功地鉴定了质量数为4的(反)原子核,如(反)氘核、(反)三合子、(反)$^3$He和(反)$^4$He。本文给出了与产率、核质子比以及聚结参数B_{\ mathm A}$相关的多重性结果,并与聚结和统计强子化模型(SHM)的期望进行了比较,以深入了解它们在重离子碰撞中的产生机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Light (anti)nuclei production in high energy nuclear collisions at the LHC with ALICE
The measurement of (anti)nuclei production in pp, p-A and A-A collisions at ultrarelativistic energies is important to understand hadronization. The excellent tracking and particle identification capabilities of ALICE make it the most suited detector at the LHC to study light (anti)nuclei produced in high-energy hadronic collisions. (Anti)nuclei with mass numbers up to 4, such as (anti)deuterons, (anti)tritons, (anti)$^3$He and (anti)$^4$He have been successfully identified in ALICE at midrapidity ($|\eta|<$0.9). In this contribution, multiplicity dependent results on the yields, nuclei-to-protons ratios as well as the coalescence parameter $B_{\mathrm A}$ as a function of the charged-particle multiplicity are presented and compared with the expectations of coalescence and statistical hadronization models (SHM) to provide insight into their production mechanism in heavy-ion collisions.
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