First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV

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

doi:10.1007/JHEP10(2021)003

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Scientific paper - Original scientific paper

First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV

Journal of High Energy Physics, 2021 (2021), 10; 003. https://doi.org/10.1007/JHEP10(2021)003

(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. (2021). First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV. Journal of High Energy Physics, 2021. (10). doi: 10.1007/JHEP10(2021)003

MLA 8th Edition

Acharya, S., et al. "First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV." Journal of High Energy Physics, vol. 2021, no. 10, 2021. https://doi.org/10.1007/JHEP10(2021)003

Chicago 17th Edition

Acharya, S., Filip Erhardt, Sven Gotovac, Marko Jerčić, David Karatović, Petra Lončar, Eugen Mudnić, et al. "First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV." Journal of High Energy Physics 2021, no. 10 (2021). https://doi.org/10.1007/JHEP10(2021)003

Harvard

Acharya, S., et al. (2021) 'First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV', Journal of High Energy Physics, 2021(10). doi: 10.1007/JHEP10(2021)003

Vancouver

Acharya S, Erhardt F, Gotovac S, Jerčić M, Karatović D, Lončar P, and sur.. First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV. Journal of High Energy Physics [Internet]. 2021 October 01 [cited 2024 December 08];2021(10). doi: 10.1007/JHEP10(2021)003

IEEE

S. Acharya, et al., "First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV", Journal of High Energy Physics, vol. 2021, no. 10, October 2021. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:098061. [Accessed: 08 December 2024]

Cite this item: https://urn.nsk.hr/urn:nbn:hr:217:098061

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Metadata

Title (english)	First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 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)	The ALICE Collaboration reports the first fully- corrected measurements of the N-subjettiness observable for track-based jets in heavy-ion collisions. This study is performed using data recorded in pp and Pb-Pb collisions at centre-of- mass energies of √s = 7 TeV and √sNN = 2.76 TeV, respectively. In particular the ratio of 2- subjettiness to 1-subjettiness, τ2/τ1, which is sensitive to the rate of two-pronged jet substructure, is presented. Energy loss of jets traversing the strongly interacting medium in heavy- ion collisions is expected to change the rate of two-pronged substructure relative to vacuum. The results are presented for jets with a resolution parameter of R = 0.4 and charged jet transverse momentum of 40 ≤ pT, jet ≤ 60 GeV/c, which constitute a larger jet resolution and lower jet transverse momentum interval than previous measurements in heavy-ion collisions. This has been achieved by utilising a semi-inclusive hadron-jet coincidence technique to suppress the larger jet combinatorial background in this kinematic region. No significant modification of the τ2/τ1 observable for track-based jets in Pb-Pb collisions is observed relative to vacuum PYTHIA6 and PYTHIA8 references at the same collision energy. The measurements of τ2/ τ1, together with the splitting aperture angle ∆R, are also performed in pp collisions at √s = 7 TeV for inclusive jets. These results are compared with PYTHIA calculations at √s = 7 TeV, in order to validate the model as a vacuum reference for the Pb- Pb centre-of-mass energy. The PYTHIA references for τ2/τ1 are shifted to larger values compared to the measurement in pp collisions. This hints at a reduction in the rate of two-pronged jets in Pb-Pb collisions compared to pp collisions.
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	Journal of High Energy Physics
Numbering	vol. 2021, no. 10, 003
e-ISSN	1029-8479
DOI	https://doi.org/10.1007/JHEP10(2021)003
URN:NBN	urn:nbn:hr:217:098061
Publication	2021-10-01
Document URL	https://link.springer.com/10.1007/JHEP10(2021)003
Type of resource	Text
Access conditions	Open access
Terms of use
Public note	Copyright CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Received: May 27, 2021. Revised: August 2, 2021. Accepted: August 18, 2021. Published: October 1, 2021. .
Created on	2024-09-22 20:47:07