LHC上J/Ψ伴随一个喷注单举产生过程研究*

doi:10.7523/j.ucas.2024.048

中国科学院大学学报

LHC上J/Ψ伴随一个喷注单举产生过程研究^*

孙立平^†

北京建筑大学理学院,北京 102627

收稿日期:2023-11-17 修回日期:2024-05-14 发布日期:2024-06-04
通讯作者: ^†E-mail: sunliping@bucea.edu.cn
基金资助:
^*国家自然科学基金（11905006）、北京市属高校基本科研业务费（X18107）资助

The research on the J/Ψ+1jet inclusive production process at the LHC

SUN, Liping

School of Science, Beijing University of Civil Engineering and Architecture, Beijing 102672, China

Received:2023-11-17 Revised:2024-05-14 Published:2024-06-04

摘要/Abstract

摘要： 对于大型强子对撞机(LHC)上 J/Ψ伴随一个喷注的单举产生过程,在非相对论量子色动力学框架下,本文给出了此产生过程的完整次领头阶修正,其中喷注采用了anti-kt算法。考虑J/Ψ不包含在喷注之内的情形,最终得到了此过程的完整截面以及J/Ψ的横向动量分布谱、喷注的横向动量分布谱、J/Ψ和喷注快度差分布谱等。计算结果表明此过程在实验上是可探测的,并且发现对于色八重态长程矩阵元,不同理论组在J/Ψ单举产生过程中拟合得到的数值,在J/Ψ伴随一个喷注单举产生的过程中并不一致,这使得J/Ψ长程矩阵元的进一步拟合成为必要。

关键词: 喷注, 大型强子对撞机, 非相对论量子色动力学, 长程矩阵元

Abstract: For J/Ψ+1jet inclusive production at the LHC, within the non-relativistic QCD (NRQCD) framework, in this work a full next-to-leading order (NLO) calculation with the anti-kt algorithm for the jet is presented. The J/Ψ is considered to be not contained in the jet. The predictions are made for the total cross section, J/Ψ transverse momentum distribution, jet transverse momentum distribution and the J/Ψ jet rapidity difference distribution for this process. It is found that the process is detectable in the experiment, and the color-octet long distance matrix elements(LDMEs) fitted in the J/Ψ inclusive production by different groups are not consistent in the J/Ψ+1jet inclusive production process, which makes a reexamination for the fit of the J/Ψ LDMEs necessary.

Key words: jet, Large Hardron Collider, non-relativistic QCD, long distance matrix elements

中图分类号:

O572.24

孙立平. LHC上J/Ψ伴随一个喷注单举产生过程研究^*[J]. 中国科学院大学学报, DOI: 10.7523/j.ucas.2024.048.

SUN, Liping. The research on the J/Ψ+1jet inclusive production process at the LHC[J]. Journal of University of Chinese Academy of Sciences, DOI: 10.7523/j.ucas.2024.048.

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LHC上J/Ψ伴随一个喷注单举产生过程研究^*

The research on the J/Ψ+1jet inclusive production process at the LHC

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