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arXiv 2507.03419nucl-exhep-ex
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来自 NA61/SHINE 强相互作用项目的新结果

News from the strong interaction program of NA61/SHINE

Antoni Marcinek

AI总结:

本文总结了 NA61/SHINE 强相互作用项目的新结果,涵盖 kaon 与 pion 产额、$ϕ$(1020) 谱、pion femtoscopy、开粲产额及 Ar+Sc 碰撞中同位旋对称性破坏的证据。

摘要:

位于 CERN SPS 的 NA61/SHINE 实验是一台用于带电和中性强子测量的多用途固定靶谱仪。其研究项目包括强相互作用研究以及为中微子和宇宙线物理提供的参考测量。本文总结了强相互作用项目中一组选定的新结果,包括带电 kaon 与 pion 产额的系统尺寸和能量依赖性、Ar+Sc 碰撞中的 $ϕ$(1020) 谱及其相对于 p+p 反应的增强、Ar+Sc 和 Be+Be 碰撞中同号 pion 的 femtoscopy、Xe+La 相互作用中 $D^0+\overline{D}^0$(开粲)产额,以及最后在 Ar+Sc 碰撞中发现的带电 kaon 产额相对于中性 kaon 的意外超出,表明同位旋对称性被强烈破坏。

英文摘要:

The NA61/SHINE experiment at the CERN SPS is a multipurpose fixed-target spectrometer for charged and neutral hadron measurements. Its research program includes studies of strong interactions as well as reference measurements for neutrino and cosmic-ray physics. This contribution summarizes a selected set of new results from our strong interaction program, including system-size and energy dependence of charged kaon to pion production, $ϕ$(1020) spectra in Ar+Sc collisions and enhancement over p+p reactions, femtoscopy of like-sign pions 0 in Ar+Sc and Be+Be collisions, $D^0+\overline{D}^0$ (open charm) yield in Xe+La interactions, and finally an unexpected excess of charged over neutral kaon production indicating a strong violation of isospin symmetry in Ar+Sc 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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