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Scientific paper - Letter
Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies
Physics Letters B, 850 (2024); 138541. https://doi.org/10.1016/j.physletb.2024.138541
(ALICE Collaboration) Acharya, S.; ...; Gotovac, Sven; ...; Karatović, David; ...; Lončar, Petra; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Vicković, Linda; ...; Zurlo, N. More authors...

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Acharya, S., Gotovac, S., Karatović, D., Lončar, P., Planinić, M., Poljak, N. ... Zurlo, N. (2024). Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies. Physics Letters B, 850.. doi: 10.1016/j.physletb.2024.138541

Acharya, S., et al. "Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies." Physics Letters B, vol. 850, 2024. https://doi.org/10.1016/j.physletb.2024.138541

Acharya, S., Sven Gotovac, David Karatović, Petra Lončar, Mirko Planinić, Nikola Poljak, Linda Vicković and N. Zurlo. "Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies." Physics Letters B 850 (2024). https://doi.org/10.1016/j.physletb.2024.138541

Acharya, S., et al. (2024) 'Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies', Physics Letters B, 850. doi: 10.1016/j.physletb.2024.138541

Acharya S, Gotovac S, Karatović D, Lončar P, Planinić M, Poljak N, and sur.. Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies. Physics Letters B [Internet]. 2024 March [cited 2024 October 18];850. doi: 10.1016/j.physletb.2024.138541

S. Acharya, et al., "Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies", Physics Letters B, vol. 850, March 2024. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:892308. [Accessed: 18 October 2024]

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Metadata
Title (english)Skewness and kurtosis of mean transverse momentum fluctuations at the LHC energies
AuthorS. Acharya
Author
...
AuthorSven Gotovac
Author
...
AuthorDavid Karatović
Author
...
AuthorPetra Lončar
Author
...
AuthorMirko Planinić
Author
...
AuthorNikola Poljak
Author
...
AuthorLinda Vicković
Author
...
AuthorN. Zurlo
CollaborationALICE Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The first measurements of skewness and kurtosis of mean transverse momentum (⟨𝑝T⟩) fluctuations are reported in Pb–Pb collisions at √𝑠NN = 5.02 TeV, Xe–Xe collisions at √𝑠NN = 5.44 TeV and pp collisions at √𝑠 = 5.02 TeV using the ALICE detector. The measurements are carried out as a function of system size ⟨d𝑁ch∕d𝜂⟩ 1∕3 |𝜂|< 𝑝T < 3.0 GeV/c and |𝜂| < 0.8, respectively. In Pb–Pb and Xe–Xe collisions, positive skewness is observed in the fluctuations of ⟨𝑝T⟩ for all centralities, which is significantly larger than what would be expected in the scenario of independent particle emission. This positive skewness is considered a crucial consequence of the hydrodynamic evolution of the hot and dense nuclear matter created in heavy-ion collisions. Furthermore, similar observations of positive skewness for minimum bias pp collisions are also reported here. Kurtosis of ⟨𝑝T⟩ fluctuations is found to be in good agreement with the kurtosis of Gaussian distribution, for most central Pb–Pb collisions. Hydrodynamic model calculations with MUSIC using Monte Carlo Glauber initial conditions are able to explain the measurements of both skewness and kurtosis qualitatively from semicentral to central collisions in Pb–Pb system. Color reconnection mechanism in PYTHIA8 model seems to play a pivotal role in capturing the qualitative behavior of the same measurements in pp collisions.
Keywords (english)
Languageenglish
Publication typeScientific paper - Letter
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysics Letters B
Numberingvol. 850, 138541
p-ISSN0370-2693
DOIhttps://doi.org/10.1016/j.physletb.2024.138541
URN:NBNurn:nbn:hr:217:892308
Publication2024-03
Document URLhttps://linkinghub.elsevier.com/retrieve/pii/S0370269324000996
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© 2024 The Author(s). Published by Elsevier B.V. Funded by SCOAP³. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Received 22 September 2023; Received in revised form 18 January 2024; Accepted 19 February 2024. Available online 23 February 2024. Published March 2024.
Created on2024-07-31 11:22:01