Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb-Pb collisions at √sNN=5.02 TeV

Acharya, S.; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Karatović, David; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Vicković, Linda; ...; Zurlo, N.

doi:10.1103/PhysRevLett.128.102001

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Scientific paper - Original scientific paper

Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb-Pb collisions at √sNN=5.02 TeV

Physical Review Letters, 128 (2022), 10; 102001. https://doi.org/10.1103/PhysRevLett.128.102001

(ALICE Collaboration) Acharya, S.; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Karatović, David; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Vicković, Linda; ...; Zurlo, N. More authors...

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APA 6th Edition

Acharya, S., Erhardt, F., Gotovac, S., Jerčić, M., Karatović, D., Lončar, P. ... Zurlo, N. (2022). Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb-Pb collisions at √sNN=5.02 TeV. Physical Review Letters, 128. (10). doi: 10.1103/PhysRevLett.128.102001

MLA 8th Edition

Acharya, S., et al. "Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb-Pb collisions at √sNN=5.02 TeV." Physical Review Letters, vol. 128, no. 10, 2022. https://doi.org/10.1103/PhysRevLett.128.102001

Chicago 17th Edition

Acharya, S., Filip Erhardt, Sven Gotovac, Marko Jerčić, David Karatović, Petra Lončar, Eugen Mudnić, et al. "Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb-Pb collisions at √sNN=5.02 TeV." Physical Review Letters 128, no. 10 (2022). https://doi.org/10.1103/PhysRevLett.128.102001

Harvard

Acharya, S., et al. (2022) 'Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb-Pb collisions at √sNN=5.02 TeV', Physical Review Letters, 128(10). doi: 10.1103/PhysRevLett.128.102001

Vancouver

Acharya S, Erhardt F, Gotovac S, Jerčić M, Karatović D, Lončar P, and sur.. Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb-Pb collisions at √sNN=5.02 TeV. Physical Review Letters [Internet]. 2022 [cited 2024 November 15];128(10). doi: 10.1103/PhysRevLett.128.102001

IEEE

S. Acharya, et al., "Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb-Pb collisions at √sNN=5.02 TeV", Physical Review Letters, vol. 128, no. 10, 2022. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:238353. [Accessed: 15 November 2024]

Cite this item: https://urn.nsk.hr/urn:nbn:hr:217:238353

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Metadata

Title (english)	Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb-Pb collisions at √sNN=5.02 TeV
Author	S. Acharya
Author	...
Author	Filip Erhardt
Author	...
Author	Sven Gotovac
Author	...
Author	Marko Jerčić
Author	...
Author	David Karatović
Author	...
Author	Petra Lončar
Author	...
Author	Eugen Mudnić
Author	...
Author	Mirko Planinić
Author	...
Author	Nikola Poljak
Author	...
Author	Linda Vicković
Author	...
Author	N. Zurlo
Collaboration	ALICE Collaboration
Author's institution	University of Zagreb Faculty of Science (Department of Physics)
Scientific / art field, discipline and subdiscipline	NATURAL SCIENCES Physics
Abstract (english)	This article presents groomed jet substructure measurements in pp and Pb-Pb collisions at √sNN=5.02 TeV with the ALICE detector. The soft drop grooming algorithm provides access to the hard parton splittings inside a jet by removing soft wide-angle radiation. We report the groomed jet momentum splitting fraction, zg, and the (scaled) groomed jet radius, θg. Charged-particle jets are reconstructed at midrapidity using the anti-kT algorithm with resolution parameters R=0.2 and R=0.4. In heavy-ion collisions, the large underlying event poses a challenge for the reconstruction of groomed jet observables, since fluctuations in the background can cause groomed parton splittings to be misidentified. By using strong grooming conditions to reduce this background, we report these observables fully corrected for detector effects and background fluctuations for the first time. A narrowing of the θg distribution in Pb-Pb collisions compared to pp collisions is seen, which provides direct evidence of the modification of the angular structure of jets in the quark-gluon plasma. No significant modification of the zg distribution in Pb-Pb collisions compared to pp collisions is observed. These results are compared with a variety of theoretical models of jet quenching, and provide constraints on jet energy-loss mechanisms and coherence effects in the quark-gluon plasma.
Keywords (english)
Language	english
Publication type	Scientific paper - Original scientific paper
Publication status	Published
Peer review	Peer review - international
Publication version	Published version
Journal title	Physical Review Letters
Numbering	vol. 128, no. 10, 102001
p-ISSN	0031-9007
e-ISSN	1079-7114
DOI	https://doi.org/10.1103/PhysRevLett.128.102001
URN:NBN	urn:nbn:hr:217:238353
Publication	2022
Document URL	https://link.aps.org/doi/10.1103/PhysRevLett.128.102001
Type of resource	Text
Access conditions	Open access
Terms of use
Public note	Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 25 August 2021; revised 29 November 2021; accepted 10 February 2022; published 7 March 2022.
Created on	2024-09-09 21:38:04