Nuclear modification factor for quarkonium production in high energy proton-nucleus collisions within the parton saturation approach

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astronomische Nachrichten Pub Date : 2024-01-04 DOI:10.1002/asna.20230165

Érison S. Rocha, Magno V. T. Machado

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Abstract

In this work, we analyze nuclear effects in the inclusive production of quarkonium in proton-nucleus collisions at high energy regime. A theoretical framework that includes initial state effects like nuclear shadowing and gluon density saturation is considered. Numerical results for nuclear modification factor, $R_{p A} (y)$ , as a function of meson rapidity in proton-nucleus collisions are presented. The parameter-free predictions are compared to the available data from the Large Hadron Collider. Discussion on the main theoretical uncertainties is made, with emphasis on the phenomenological models for the nuclear saturation scale.

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部分子饱和方法中高能质子-核碰撞中夸克鎓产生的核修正因子

在这项工作中，我们分析了质子-核碰撞中夸克鎓在高能状态下的包容性产生中的核效应。我们考虑了一个包含核阴影和胶子密度饱和等初始状态效应的理论框架。文中给出了核修正因子 RpA(y)$$ {R}_{pA}(y) $$ 作为质子-核碰撞中介子快速性函数的数值结果。将无参数预测与大型强子对撞机的现有数据进行了比较。讨论了主要的理论不确定性，重点是核饱和尺度的现象学模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Astronomische Nachrichten 地学天文-天文与天体物理

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

4-8 weeks

期刊介绍： Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.