LHC上J/ψ伴随一个喷注的单举产生过程

doi:10.7523/j.ucas.2024.048

中国科学院大学学报 ›› 2025, Vol. 42 ›› Issue (3): 315-321.DOI: 10.7523/j.ucas.2024.048

• 数学与物理学 • 上一篇

LHC上J/ψ伴随一个喷注的单举产生过程

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: 孙立平,E-mail:sunliping@bucea.edu.cn
基金资助:
国家自然科学基金(11905006)和北京市属高校基本科研业务费(X18107)资助

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，给出此产生过程的完整次领头阶修正，其中喷注采用anti-kt算法。考虑J/ψ不包含在喷注之内的情形，最终得到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 large hadron collider, within the non-relativistic quantum chromodynamics framework, in this work a full next-to-leading order 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 hadron collider (LHC), non-relativistic quantum chromodynamics (NRQCD), long distance matrix elements (LDMEs)

中图分类号:

O572.24

孙立平. LHC上J/ψ伴随一个喷注的单举产生过程[J]. 中国科学院大学学报, 2025, 42(3): 315-321.

SUN Liping. J/ψ+1jet inclusive production process at the LHC[J]. Journal of University of Chinese Academy of Sciences, 2025, 42(3): 315-321.

参考文献

[1] Bodwin G T, Braaten E, Lepage G P. Rigorous QCD analysis of inclusive annihilation and production of heavy quarkonium[J]. Physical Review D, 1995, 51(3): 1125-1171. DOI: 10.1103/physrevd.51.1125.
[2] Butenschoen M, Kniehl B A. Probing nonrelativistic QCD factorization in polarized J/ψ photoproduction at next-to-leading order[J]. Physical Review Letters, 2011, 107(23): 232001. DOI: 10.1103/PhysRevLett.107.232001.
[3] Butenschoen M, He Z G, Kniehl B A. Next-to-leading-order nonrelativistic QCD disfavors the interpretation of X(3872) as χc1(2P)[J]. Physical Review D, 2013, 88: 011501. DOI: 10.1103/PhysRevD.88.011501.
[4] Zhang Y J, Ma Y Q, Wang K, et al. QCD radiative correction to color-octet J/ψ inclusive production at B factories[J]. Physical Review D, 2010, 81: 034015. DOI: 10. 1103/PhysRevD.81.034015.
[5] He Z G, Fan Y, Chao K T. Relativistic corrections to J/ψ exclusive and inclusive double charm production at B factories[J]. Physical Review D, 2007, 75(7): 074011. DOI: 10.1103/physrevd.75.074011.
[6] Gong B, Wang J X. Next-to-leading-order QCD corrections to J/ψ polarization at tevatron and large-hadron-collider energies[J]. Physical Review Letters, 2008, 100(23):232001. DOI: 10.1103/physrevlett.100.232001.
[7] Li R, Wang J X. Next-to-leading-order QCD corrections to J/ψ(γ)+γ production at the LHC[J]. Physics Letters B, 2009, 672(1): 51. DOI: 10.1016/j.physletb.2008.12. 050.
[8] CMS Collaboration. Measurement of the prompt J/ψ and ψ(2S) polarizations in pp collisions at S=7 TeV[J]. Physics Letters B, 2013, 727: 381. DOI: 10.1016/j.physletb.2013.10.055.
[9] Ellis S D, Kunszt Z, Soper D E. One-jet inclusive cross section at order alpha s3: quarks and gluons[J]. Physical Review Letters, 1990, 64(18): 2121-2124. DOI: 10.1103/PhysRevLett.64.2121.
[10] Mukherjee A, Vogelsang W. Jet production in (un)polarized pp collisions: dependence on jet algorithm[J]. Physical Review D, 2012, 86(9): 094009. DOI: 10.1103/physrevd.86.094009.
[11] Boussarie R, Ducloué B, Szymanowski L, et al. Production of a forward J/Psi and a backward jet at the LHC[C]//Proceedings of XXIV international Workshop on Deep-Inelastic Scattering and Related Subjects — Pos(DIS2016). DESY Hamburg, Germany. Trieste, Italy: Sissa Medialab, 2016: 1-8. DOI: 10.22323/1.265.0204.
[12] Berger C F, Bern Z, Dixon L J, et al. Precise predictions for W+3Jet production at hadron colliders[J]. Physical Review Letters, 2009, 102(22): 222001. DOI: 10.1103/physrevlett. 102.222001.
[13] Cacciari M, Salam G P, Soyez G. The anti-kt jet clustering algorithm[J]. Journal of High Energy Physics, 2008, 2008(4): 63. DOI: 10.1088/1126-6708/2008/04/063.
[14] Ellis S D, Soper D E. Successive combination jet algorithm for hadron collisions[J]. Physical Review D, 1993, 48(7): 3160-3166. DOI: 10.1103/physrevd.48.3160.
[15] Kang Z B, Qiu J W, Ringer F, et al. J/ψ production and polarization within a jet[J]. Physical Review Letters, 2017, 119(3): 032001. DOI: 10.1103/PhysRevLett.119. 032001.
[16] Bain R, Makris Y, Mehen T, et al. NRQCD confronts LHCb data on quarkonium production within jets[J]. Physical Review Letters, 2017, 119(3): 032002. DOI: 10.1103/PhysRevLett.119.032002.
[17] Harris B W, Owens J F. Two cutoff phase space slicing method[J]. Physical Review D, 2002, 65(9): 094032. DOI: 10.1103/PhysRevD.65.094032.
[18] Hahn T. Generating Feynman diagrams and amplitudes with FeynArts 3[J]. Computer Physics Communications, 2001, 140(3): 418-431. DOI: 10.1016/S0010-4655(01)00290-9.
[19] Cacciari M, Salam G P, Soyez G. FastJet user manual[J]. The European Physical Journal C, 2012, 72(3):1896. DOI: 10.1140/epjc/s10052-012-1896-2.
[20] Lai H L, Huston J, Kuhlmann S, et al. Global QCD analysis of parton structure of the nucleon: CTEQ5 parton distributions[J]. European Physical Journal C, 2000, 12(3): 375-392. DOI: 10.1007/s100529900196.
[21] Pumplin J, Stump D R, Huston J, et al. New generation of parton distributions with uncertainties from global QCD analysis[J]. Journal of High Energy Physics, 2002, 2002(7): 12. DOI: 10.1088/1126-6708/2002/07/012.
[22] Bodwin G T, Chung H S, Kang D, et al. Improved determination of color-singlet nonrelativistic QCD matrix elements for S-wave charmonium[J]. Physical Review D, 2008, 77(9): 094017. DOI: 10.1103/PhysRevD.77.094017.
[23] Chao K T, Ma Y Q, Shao H S, et al. J/ψ polarization at hadron colliders in nonrelativistic QCD[J]. Physical Review Letters, 2012, 108(24): 242004. DOI: 10.1103/PhysRevLett.108.242004.
[24] Gong B, Wan L P, Wang J X, et al. Polarization for prompt J/ψ and ψ(2S) production at the Tevatron and LHC[J]. Physical Review Letters, 2013, 110(4): 042002. DOI: 10.1103/PhysRevLett.110.042002.
[25] Butenschön M, Kniehl B A. Reconciling J/ψ production at HERA, RHIC, Tevatron, and LHC with nonrelativistic QCD factorization at next-to-leading order[J]. Physical Review Letters, 2011, 106(2): 022003. DOI: 10.1103/PhysRevLett.106.022003.
[26] Bodwin G T, Chao K T, Chung H S, et al. Fragmentation contributions to hadroproduction of prompt J/ψ, χ_cJ, and ψ(2S) states[J]. Physical Review D, 2016, 93(3): 034041. DOI: 10.1103/PhysRevD.93.034041.

LHC上J/ψ伴随一个喷注的单举产生过程

J/ψ+1jet inclusive production process at the LHC

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics

本文评价

访问统计

联系我们