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arXiv 2307.04534hep-ex
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利用双粒子角关联研究重子产生

Studying baryon production using two-particle angular correlations

Małgorzata Anna Janik

AI总结:

本文通过双粒子角关联测量发现重子对呈现近侧反关联而非介子那样的喷注峰,揭示了重子产生机制对现有模型的挑战。

摘要:

最新的已鉴别粒子ΔηΔφ关联测量结果显示了重子与介子在粒子产生方面的差异。介子的关联函数呈现出预期的峰结构,该峰主要由迷你喷注碎裂效应主导,并且能够被通用目的蒙特卡洛生成器很好地复现。对于重子对(两个粒子具有相同的重子数),观测到的不是峰,而是一种令人意外的近侧反关联结构,这意味着两个这样的粒子很少以相近的动量产生。这些结果对当代模型提出了挑战,目前对该观测尚无明确的理论解释。本文概述了最新的重子关联测量结果,这些结果令人震惊。

英文摘要:

Latest measurements of $ΔηΔφ$ correlations of identified particles show differences in particle production between baryons and mesons. The correlation functions for mesons exhibit the expected peak dominated by effects of mini-jet fragmentation and are reproduced well by general purpose Monte Carlo generators. For baryon pairs (where both particles have the same baryon number) a surprising near-side anti-correlation structure is observed instead of a peak, implying that two such particles are rarely produced with similar momentum. These results present a challenge to the contemporary models and there is no definite theoretical explanation of the observation. In this proceedings an overview of the latest baryon correlation measurements yielding startling results are presented.

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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