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arXiv 2003.03184nucl-exhep-ex
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在$\sqrt{s}=13$ TeV pp碰撞中(反)氘核的产生

(Anti-)Deuteron production in pp collisions at $\sqrt{s}=13$ TeV

ALICE Collaboration

摘要:

pp碰撞中(反)氘核产生的研究已被证明是研究高能强子碰撞中松散束缚态形成机制的有力工具。本文利用ALICE实验研究了$\sqrt{s}=13$ TeV的pp非弹性碰撞中(反)氘核的产生与带电粒子多重数的关系。由于大量的累积最小偏置事件,它已经有可能测量(反)氘核生产pp碰撞相同的带电粒子多重性($\rm{d} N_{ch}/\rm{d}η\sim26$)的p-Pb碰撞在类似的中心质量的能量。在不确定性,氘产率在pp碰撞类似的p-Pb相互作用,这表明一个共同的形成机制背后的生产轻核强子相互作用。在这种情况下,测量结果进行了比较与预期的聚结和统计强子化模型(SHM)。

英文摘要:

The study of (anti-)deuteron production in pp collisions has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high energy hadronic collisions. In this paper the production of (anti-)deuterons is studied as a function of the charged particle multiplicity in inelastic pp collisions at $\sqrt{s}=13$ TeV using the ALICE experiment. Thanks to the large number of accumulated minimum bias events, it has been possible to measure (anti-)deuteron production in pp collisions up to the same charged particle multiplicity ($\rm{d} N_{ch}/\rm{d}η\sim26$) as measured in p-Pb collisions at similar centre-of-mass energies. Within the uncertainties, the deuteron yield in pp collisions resembles the one in p-Pb interactions, suggesting a common formation mechanism behind the production of light nuclei in hadronic interactions. In this context the measurements are compared with the expectations of coalescence and Statistical Hadronisation Models (SHM).

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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