发表机构
Ravenshaw University; Stewart Science College; Azim Premji University（拉文沙乌大学; 斯图尔特理学院; 阿齐姆普雷姆吉大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文在NRQCD和MNRQCD框架下预测LHCb质子-铅碰撞中底偶素态的产生截面、核修正因子和产额，发现两种方法差异显著，为未来实验提供基准。
AI 中文摘要
我们在非相对论量子色动力学（NRQCD）和修正的非相对论量子色动力学（MNRQCD）框架内，探索大型强子对撞机（LHC）上质子-铅（pPb）碰撞中底偶素态的产生。在这项工作中，我们给出了在LHCb运动学区域内，$\Upsilon(1S)$的产生截面、核修正因子$R_{\rm pPb}$以及前后产生比$R_{\rm FB}$作为横动量和快度函数的理论预测。MNRQCD框架包含了来自色八重态的微扰软胶子发射，能够描述重离子碰撞中的夸克偶素产生。此外，利用重夸克自旋对称性，我们在NRQCD和MNRQCD两种框架内估计了自旋单态底偶素态$\eta_b$和$h_b$的产生截面和预期事件产额。预测显示，这两种方法在积分截面和这些共振态的横动量分布上存在显著差异。因此，这些结果可为LHCb未来的实验测量提供重要基准，并有助于更深入地理解质子-铅碰撞中底偶素的产生和核修正效应。
英文摘要
We explore the production of bottomonium states in proton--lead (pPb) collisions at the Large Hadron Collider (LHC) within the frameworks of Non-Relativistic Quantum Chromodynamics (NRQCD) and modified NRQCD (MNRQCD). In this work, we present theoretical predictions for the production cross-section, the nuclear modification factor $R_{\rm pPb}$ and the forward-to-backward production ratio $R_{\rm FB}$ of $Υ(1S)$ as functions of transverse momentum and rapidity in the LHCb kinematic region. The MNRQCD framework, which incorporates perturbative soft-gluon emissions from color-octet states, provides description of quarkonium production in heavy-ion collision. Furthermore, using heavy-quark spin symmetry, we estimate the production cross-sections and expected event yields of the spin-singlet bottomonium states $η_b$ and $h_b$ within both NRQCD and MNRQCD. The predictions show significant differences between the two approaches in the integrated cross-sections and transverse momentum distributions of these resonances. Therefore, these results could provide important benchmarks for future experimental measurements at LHCb and contribute to a deeper understanding of bottomonia production and nuclear modifications in proton--lead collisions.
Comments13 pages, 7 figures, 2 tables
