arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.13419nucl-ex
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在LHC与ALICE合作,从小型碰撞系统到大型碰撞系统,开启重口味生产

Open heavy-flavour production from small to large collision systems with ALICE at the LHC

Fabio Catalano

摘要:

重夸克是超相对论性重离子碰撞中产生的热而致密的核物质--夸克-胶子等离子体离子体的有效探针。由于重夸克产生的时间尺度很短,所以它们经历了整个系统的演化。特别是,在大型强子对撞机的能量铅铅碰撞重味强子生产的测量,让深入了解重夸克输运的退禁闭物质的机制。在小型强子系统中,pp和p-Pb碰撞中,重味测量为观测重离子碰撞中的热介质效应、微扰量子色动力学计算和冷核物质效应测量提供了基线。本文讨论了最近ALICE关于pp、p-Pb和Pb-Pb碰撞中不同能量的开放重味强子产生的结果。对完全重构的粲强子和重味强子衰变的单电子给出了新的测量结果,并通过测量美强子衰变的D介子和电子研究了美夸克的产生.

英文摘要:

Heavy quarks are effective probes of the hot and dense nuclear matter, the quark-gluon plasma, produced in ultra-relativistic heavy-ion collisions. Due to the short time scale characterising their production, heavy quarks experience the whole evolution of the system. In particular, measurements of heavy-flavour hadron production in Pb-Pb collisions at LHC energies give insight into the mechanisms of heavy-quark transport in the deconfined matter. In small hadronic systems, pp and p-Pb collisions, heavy-flavour measurements provide the baseline for observations of hot-medium effects in heavy-ion collisions, as well as tests of perturbative quantum chromodynamic calculations and measurements of cold-nuclear-matter effects. In this contribution, recent ALICE results on open heavy-flavour hadron production in pp, p-Pb and Pb-Pb collisions at various energies are discussed. New measurements are presented both for fully-reconstructed charmed hadrons and for single electrons from heavy-flavour hadron decays, also investigating the beauty-quark production via the measurement of D mesons and electrons from beauty-hadron decays.

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。

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