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arXiv 2603.09545hep-exhep-ph
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强子与胶子喷注识别在EIC光产生事例中的研究

Study of quark and gluon jet identification in photoproduction at EIC

Brandeis University(布兰迪斯大学);USAR and USBAS, Guru Gobind Singh Indraprastha University(古鲁戈宾德·辛格印度普拉斯塔大学);Panjab University(潘杰布大学);Amity University(阿米蒂大学)

Siddharth Narayan Singh, Ritu Aggarwal, Manjit Kaur

AI总结:

研究EIC光产生事例中夸克与胶子喷注的识别方法及亚结构分析,为QCD研究提供基础。

摘要:

我们研究了在EIC提案的电子离子对撞机中,中心对撞能量$\sqrt{s} = 30\text{--}140$ GeV的光产生事例中产生的喷注的亚结构。事件使用PYTHIA生成,分析了直接和解析光产生子过程在不同中心对撞能量下的贡献。使用FastJet框架中的纵向不变$ k_T $算法重建喷注。通过使用喷注形状变量,详细研究了所选双喷注光产生样本中由夸克和胶子引发的喷注的亚结构。给出了胶子引发和夸克引发喷注的亚喷注数目和积分喷注形状的预测。这些结果展示了在EIC光产生事例中区分夸克和胶子喷注的可行性,并为进一步的QCD研究提供了基础。

英文摘要:

This paper presents a systematic study of the substructure of dijets produced in direct and resolved photoproduction events and subsequent quark and gluon jet identification in dijets, considering the kinematic reach of the upcoming Electron-Ion Collider (EIC) experiment. We investigate the substructure of jets produced in dijet photoproduction events with center-of-mass energies $\sqrt{s} = 64 \text{--}140$ GeV at the EIC.~Events are simulated using event generator PYTHIA and contributions from direct and resolved photoproduction subprocesses are analyzed at different energies.~Jets are reconstructed using longitudinally invariant $k_T$ algorithm within the FastJet framework.~Substructure of quark and gluon initiated jets in the selected dijet photoproduction sample is studied in detail by using jet-shape variables.~Predictions for subjet multiplicities and integrated jet shapes are presented in the gluon-initiated and quark-initiated jets in the dijet photoproduction events at the EIC energies.~These results demonstrate the feasibility of distinguishing quark and gluon jets in the photoproduction events at the EIC and provide a baseline for further QCD studies.

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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