Probing medium-induced jet splitting and energy loss in heavy-ion collisions
Abstract
The nuclear modification of jet splitting in relativistic heavy-ion collisions at RHIC and the LHC energies is studied based on the higher twist formalism. Assuming coherent energy loss for the two splitted subjets, a non-monotonic jet energy dependence is found for the nuclear modification of jet splitting function: strongest modification at intermediate jet energies whereas weaker modification for larger or smaller jet energies. Combined with the smaller size and lower density of the QGP medium at RHIC than at the LHC, this helps to understand the groomed jet measurements from CMS and STAR Collaborations: strong modification of the momentum sharing distribution at the LHC and no obvious modification of distribution at RHIC. In addition, the observed nuclear modification pattern of the groomed jet distribution cannot be explained solely by independent energy loss of the two subjets. Our result may be tested in future measurements of groomed jets with lower jet energies at the LHC and larger jet energies at RHIC, for different angular separations between the two subjets.
- Authors:
- Publication Date:
- Research Org.:
- Wayne State Univ., Detroit, MI (United States); Xinyang Normal Univ. (China); Central China Normal Univ., Wuhan (China)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); National Natural Science Foundation of China (NSFC)
- OSTI Identifier:
- 1432907
- Alternate Identifier(s):
- OSTI ID: 1499153
- Grant/Contract Number:
- 11375072; 11775095; 11647066; SC0013460
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters B
- Additional Journal Information:
- Journal Name: Physics Letters B Journal Volume: 781 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Chang, Ning-Bo, Cao, Shanshan, and Qin, Guang-You. Probing medium-induced jet splitting and energy loss in heavy-ion collisions. Netherlands: N. p., 2018.
Web. doi:10.1016/j.physletb.2018.04.019.
Chang, Ning-Bo, Cao, Shanshan, & Qin, Guang-You. Probing medium-induced jet splitting and energy loss in heavy-ion collisions. Netherlands. https://doi.org/10.1016/j.physletb.2018.04.019
Chang, Ning-Bo, Cao, Shanshan, and Qin, Guang-You. Fri .
"Probing medium-induced jet splitting and energy loss in heavy-ion collisions". Netherlands. https://doi.org/10.1016/j.physletb.2018.04.019.
@article{osti_1432907,
title = {Probing medium-induced jet splitting and energy loss in heavy-ion collisions},
author = {Chang, Ning-Bo and Cao, Shanshan and Qin, Guang-You},
abstractNote = {The nuclear modification of jet splitting in relativistic heavy-ion collisions at RHIC and the LHC energies is studied based on the higher twist formalism. Assuming coherent energy loss for the two splitted subjets, a non-monotonic jet energy dependence is found for the nuclear modification of jet splitting function: strongest modification at intermediate jet energies whereas weaker modification for larger or smaller jet energies. Combined with the smaller size and lower density of the QGP medium at RHIC than at the LHC, this helps to understand the groomed jet measurements from CMS and STAR Collaborations: strong modification of the momentum sharing zg distribution at the LHC and no obvious modification of zg distribution at RHIC. In addition, the observed nuclear modification pattern of the groomed jet zg distribution cannot be explained solely by independent energy loss of the two subjets. Our result may be tested in future measurements of groomed jets with lower jet energies at the LHC and larger jet energies at RHIC, for different angular separations between the two subjets.},
doi = {10.1016/j.physletb.2018.04.019},
journal = {Physics Letters B},
number = C,
volume = 781,
place = {Netherlands},
year = {Fri Jun 01 00:00:00 EDT 2018},
month = {Fri Jun 01 00:00:00 EDT 2018}
}
https://doi.org/10.1016/j.physletb.2018.04.019
Web of Science
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