تقرير
Study of EEC discrimination power on quark and gluon quenching effects in heavy-ion collisions at $\sqrt{s}=5.02$ TeV
| العنوان: | Study of EEC discrimination power on quark and gluon quenching effects in heavy-ion collisions at $\sqrt{s}=5.02$ TeV |
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| المؤلفون: | Chen, Shi-Yong, Shen, Ke-Ming, Xue, Xu-Fei, Dai, Wei, Zhang, Ben-Wei, Wang, En-Ke |
| سنة النشر: | 2024 |
| المجموعة: | Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Theory |
| الوصف: | The energy-energy correlator (EEC) is considered as a powerful probe of jet substructure, especially a better probe of certain soft and collinear features. To study the utility of such observable for quark vs gluon discrimination of jet quenching phenomenon, this work first predicts the energy-energy correlators of inclusive jets in central~($0-10\%$) Pb+Pb collisions at $\sqrt{\rm s}$ = 5.02 TeV for jet transverse momentum interval $40 - 60$ GeV. The Pb+Pb EEC distribution shifts to larger $R_{\rm L}$ and smaller $R_{\rm L}$ simultaneously. The shift towards larger $R_{\rm L}$ is attributed to the energy loss effect when the jet evolves in the hot/dense medium and the shift towards smaller $R_{\rm L}$ is due to the selection bias effects. Moreover, we find the EEC distribution for pure quark jets in nucleus-nucleus (A+A) collisions will only be suffering even stronger enhancement at $R_{\rm L}> 0.2$, and the EEC distribution for pure gluon jets in A+A collisions will be observed shifting toward smaller and larger $R_{\rm L}$ at the same time. The jet quenching patterns (A+A/p+p) of the quark jets and the gluon jets can then be separated. We also find that the differences are mainly determined by the initial EEC distribution in p+p, and are not affected much by the energy loss differences between quark and gluon. Inclusive jets are dominated by gluon jets, and photon-tagged jets are used to represent quark jets, we propose this double-ratio measurement to demonstrate the quark/gluon discrimination for the jet quenching phenomenon of jet substructures. Comment: 9 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2409.13996 |
| رقم الأكسشن: | edsarx.2409.13996 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |