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Scientific paper - Original scientific paper
Underlying event properties in pp collisions at √s = 13 TeV
Journal of High Energy Physics, 2020 (2020), 04; 192. https://doi.org/10.1007/JHEP04(2020)192
(ALICE Collaboration) Acharya, S.; ...; Antičić, Tome; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Simatović, Goran; ...; Utrobičić, Antonija; ...; Vicković, Linda; ...; Zurlo, N. More authors...

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Acharya, S., Antičić, T., Erhardt, F., Gotovac, S., Jerčić, M., Lončar, P. ... Zurlo, N. (2020). Underlying event properties in pp collisions at √s = 13 TeV. Journal of High Energy Physics, 2020. (04). doi: 10.1007/JHEP04(2020)192

Acharya, S., et al. "Underlying event properties in pp collisions at √s = 13 TeV." Journal of High Energy Physics, vol. 2020, no. 04, 2020. https://doi.org/10.1007/JHEP04(2020)192

Acharya, S., Tome Antičić, Filip Erhardt, Sven Gotovac, Marko Jerčić, Petra Lončar, Eugen Mudnić, et al. "Underlying event properties in pp collisions at √s = 13 TeV." Journal of High Energy Physics 2020, no. 04 (2020). https://doi.org/10.1007/JHEP04(2020)192

Acharya, S., et al. (2020) 'Underlying event properties in pp collisions at √s = 13 TeV', Journal of High Energy Physics, 2020(04). doi: 10.1007/JHEP04(2020)192

Acharya S, Antičić T, Erhardt F, Gotovac S, Jerčić M, Lončar P, and sur.. Underlying event properties in pp collisions at √s = 13 TeV. Journal of High Energy Physics [Internet]. 2020 [cited 2024 November 29];2020(04). doi: 10.1007/JHEP04(2020)192

S. Acharya, et al., "Underlying event properties in pp collisions at √s = 13 TeV", Journal of High Energy Physics, vol. 2020, no. 04, 2020. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:351732. [Accessed: 29 November 2024]

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Metadata
Title (english)Underlying event properties in pp collisions at √s = 13 TeV
AuthorS. Acharya
Author
...
AuthorTome Antičić
MBZ: 218816
Author
...
AuthorFilip Erhardt
MBZ: 345132
Author
...
AuthorSven Gotovac
MBZ: 108173
Author
...
AuthorMarko Jerčić
MBZ: 358125
Author
...
AuthorPetra Lončar
MBZ: 350591
Author
...
AuthorEugen Mudnić
MBZ: 248856
Author
...
AuthorMirko Planinić
MBZ: 213776
Author
...
AuthorNikola Poljak
MBZ: 283732
Author
...
AuthorGoran Simatović
MBZ: 329845
Author
...
AuthorAntonija Utrobičić
MBZ: 342963
Author
...
AuthorLinda Vicković
MBZ: 242565
Author
...
AuthorN. Zurlo
CollaborationALICE Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Abstract (english)
This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at midrapidity (|η| < 0.8) in pp collisions at √s = 13 TeV. The hard scatterings are identified by the leading particle, the charged particle with the highest transverse momentum (p leading T) in the event. Charged-particle number- densities and summed transverse-momentum densities are measured in different azimuthal regions defined with respect to the leading particle direction: Toward, Transverse, and Away. The Toward and Away regions contain the fragmentation products of the hard scatterings in addition to the UE contribution, whereas particles in the Transverse region are expected to originate predominantly from the UE. The study is performed as a function of p leading T with three different pT thresholds for the associated particles, p track T > 0.15, 0.5, and 1.0 GeV/c. The charged-particle density in the Transverse region rises steeply for low values of p leading T and reaches a plateau. The results confirm the trend that the charged-particle density in the Transverse region shows a stronger increase with √s than the inclusive charged-particle density at midrapidity. The UE activity is increased by approximately 20% when going from 7 TeV to 13 TeV pp collisions. The plateau in the Transverse region (5 < pleading T < 40 GeV/c) is further characterized by the probability distribution of its charged- particle multiplicity normalized to its average value (relative transverse activity, RT) and the mean transverse momentum as a function of RT. Experimental results are compared to model calculations using PYTHIA 8 and EPOS LHC. The overall agreement between models and data is within 30%. These measurements provide new insights on the interplay between hard scatterings and the associated UE in pp collisions.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleJournal of High Energy Physics
Numberingvol. 2020, no. 04, 192
p-ISSN1126-6708
e-ISSN1029-8479
DOIhttps://doi.org/10.1007/JHEP04(2020)192
URN:NBNurn:nbn:hr:217:351732
Publication2020
Document URLhttps://link.springer.com/article/10.1007/JHEP04(2020)192
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public noteOpen Access. 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: November 17, 2019; accepted: March 24, 2020; published: April 29, 2020.
Created on2020-11-20 16:43:53