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arXiv 2206.03399hep-ph
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强子介质对重离子碰撞中$Z_{cs} (3985)^-$产生的影响

Hadronic medium effects on $Z_{cs} (3985)^-$ production in heavy-ion collisions

L. M. Abreu, F. S. Navarra, H. P. L. Vieira

摘要:

本文研究了热强子气体中多夸克态$Z_{cs} (3985)^-$与轻介子的相互作用。利用有效拉格朗日框架,我们估计的真空截面以及热截面的生产过程$ \bar{D}_{s}^{(*)} D_{s}^{(*)} \rightarrow Z_{cs}^- X \, (X=π, K, η) $和相应的逆反应。结果表明,所考虑的过程具有相当大的截面。最重要的是,$Z_{cs}$湮灭的热截面比产生的热截面大得多。这一特征可能会对某些可观测量产生相关影响,例如在重离子碰撞中测量的最终$Z_{cs}$多重性。

英文摘要:

In this work we study the interactions of the multiquark state $Z_{cs} (3985)^-$ with light mesons in a hot hadron gas. Using an Effective Lagrangian framework, we estimate the vacuum cross sections as well as the thermal cross sections of the production processes $ \bar{D}_{s}^{(*)} D_{s}^{(*)} \rightarrow Z_{cs}^- X \, (X=π, K, η) $ and the corresponding inverse reactions. The results indicate that the considered processes have sizeable cross sections. Most importantly, the thermal cross sections for $Z_{cs}$ annihilation are much larger than those for production. This feature might produce relevant effects on some observables, such as the final $Z_{cs}$ multiplicity, measured in heavy ion collisions.

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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