Underlying-event properties in pp and p–Pb collisions at √s.sub.NN./sub. = 5.02 TeV

Acharya, S.; Adamová, Dagmar; Adler, A.; Aglieri Rinella, G.; Bielčík, J.; Bielčíková, Jana; Broz, M.; Contreras, J. G.; Filová, V.; Grecká, Ekaterina; Grund, D.; Herman, T.; Horák, D.; Isakov, Artem; Kotliarov, Artem; Krupová, D. M.; Křížek, Filip; Křížková Gajdošová, K.; Kushpil, Svetlana; Petráček, V.; Šafařík, K.; Torres, S. R.; Závada, Petr

doi:https://dx.doi.org/10.1007/JHEP06(2023)023

Number of the records: 1

Underlying-event properties in pp and p–Pb collisions at √s.sub.NN./sub. = 5.02 TeV

1.

SYSNO ASEP	0575579
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Underlying-event properties in pp and p–Pb collisions at √s_NN = 5.02 TeV
Author(s)	Acharya, S. (IN) Adamová, Dagmar (UJF-V)_{RID, ORCID, SAI} Adler, A. (DE) Aglieri Rinella, G. (CH) Bielčík, J. (CZ) Bielčíková, Jana (UJF-V)_{RID, ORCID, SAI} Broz, M. (CZ) Contreras, J. G. (CZ) Filová, V. (CZ) Grecká, Ekaterina (UJF-V)_ORCID Grund, D. (CZ) Herman, T. (CZ) Horák, D. (CZ) Isakov, Artem (UJF-V)_{ORCID, SAI} Kotliarov, Artem (UJF-V)_{ORCID, SAI} Krupová, D. M. (CZ) Křížek, Filip (UJF-V)_{RID, ORCID, SAI} Křížková Gajdošová, K. (CZ) Kushpil, Svetlana (UJF-V)_{RID, ORCID, SAI} Petráček, V. (CZ) Šafařík, K. (CZ) Torres, S. R. (CZ) Závada, Petr (FZU-D)_{RID, ORCID}
Number of authors	1032
Article number	23
Source Title	Journal of High Energy Physics. - : Springer - ISSN 1029-8479 Roč. 2023, č. 6 (2023)
Number of pages	38 s.
Publication form	Print - P
Language	eng - English
Country	US - United States
Keywords	ALICE collaboration ; Properties of Hadrons ; Quark-Gluon Plasma
OECD category	Nuclear physics
Research Infrastructure	CERN-CZ III - 90240 - Fyzikální ústav AV ČR, v. v. i.
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271 ; UJF-V - RVO:61389005
UT WOS	001035464000001
EID SCOPUS	85161403453
DOI	10.1007/JHEP06(2023)023
Annotation	We report about the properties of the underlying event measured with ALICE at the LHC in pp and p-Pb collisions at root sNN = 5.02 TeV. The event activity, quantified by charged-particle number and summed- pT densities, is measured as a function of the leadingparticle transverse momentum (p(T)(trig)). These quantities are studied in three azimuthalangle regions relative to the leading particle in the event: toward, away, and transverse. Results are presented for three different p(T) thresholds (0.15, 0.5 and 1 GeV/c) at midpseudorapidity (\|eta\| < 0.8). The event activity in the transverse region, which is the most sensitive to the underlying event, exhibits similar behaviour in both pp and p-Pb collisions, namely, a steep increase with p(T)(trig) for low p(trig) (T), followed by a saturation at p(T)(trig) approximate to 5 GeV/c. The results from pp collisions are compared with existing measurements at other centre-ofmass energies. The quantities in the toward and away regions are also analyzed after the subtraction of the contribution measured in the transverse region. The remaining jet-like particle densities are consistent in pp and p-Pb collisions for p(trig) (T) > 10 GeV/c, whereas for lower p(T)(trig) values the event activity is slightly higher in p-Pb than in pp collisions. The measurements are compared with predictions from the PYTHIA 8 and EPOS LHC Monte Carlo event generators.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2024
Electronic address	https://doi.org/10.1007/JHEP06(2023)023

Number of the records: 1