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arXiv 2602.19072nucl-thhep-ph
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固定靶质子-核碰撞中的粲偶素抑制

Charmonium suppression in fixed target proton-nucleus collisions

Variable Energy Cyclotron Centre(变能回旋加速器中心);Homi Bhabha National Institute(霍米·巴巴国立研究所);Bali Ram Bhagat College(巴里·拉姆·巴加特学院);Indian Institute of Technology Goa(印度理工学院果阿分校)

Sourav Kanti Giri, Partha Pratim Bhaduri, Biswarup Paul, Santosh K. Das

AI总结:

本文系统研究了固定靶质子-核碰撞中冷核物质效应对粲偶素(J/ψ, ψ(2S))产生的影响,通过分析初始态部分子能量损失、核阴影和共振态末态吸收三种效应的相互作用,评估了现有实验数据,并预测了未来实验中的正常吸收水平。

摘要:

本文对固定靶质子-核(p+A)碰撞中作用于粲偶素(J/ψ, ψ(2S))产生的冷核物质(CNM)效应进行了系统研究。详细评估了三种不同的可能CNM效应(即初始态部分子能量损失、核阴影和共振态的末态吸收)的相互作用对粲偶素产生截面的影响。为此,我们检查了来自SPS、费米实验室和HERA-B的固定靶p+A碰撞实验中粲偶素产生的现有数据。利用观测到的J/ψ产生模式的束流能量依赖性,预测了在CERN SPS的NA60+实验和FAIR SIS100加速器设施的CBM实验即将进行的质子诱导碰撞中“正常”吸收的水平。

英文摘要:

In this article, we perform a systematic investigation of the cold nuclear matter (CNM) effects, operative on charmonium ($J/ψ$, $ψ(2S)$) production, in fixed target proton-nucleus (p+A) collisions. Influence on charmonium production cross section due to the interplay of three different plausible CNM effects namely the initial-state parton energy loss, nuclear shadowing, and final-state absorption of the resonant states, are evaluated in detail. The available data on charmonium production in fixed target p+A collision experiments from SPS, Fermilab and HERA-B are examined for this purpose. The beam energy dependence of the observed $J/ψ$ production patterns are utilized to anticipate level of "normal" absorption in the upcoming proton induced collisions by the NA60+ experiment at CERN SPS and the CBM experiment at FAIR SIS100 accelerator facilities.

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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