Charged-particle production as a function of the relative transverse activity classifier in pp, p-Pb, and Pb-Pb collisions at the LHC

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

doi:https://dx.doi.org/10.1007/JHEP01(2024)056

Number of the records: 1

Charged-particle production as a function of the relative transverse activity classifier in pp, p-Pb, and Pb-Pb collisions at the LHC

1.

SYSNO ASEP	0584993
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Charged-particle production as a function of the relative transverse activity classifier in pp, p-Pb, and Pb-Pb collisions at the LHC
Author(s)	Acharya, S. (IN) Adamová, Dagmar (UJF-V)_{RID, ORCID, SAI} Aglieri Rinella, G. (CH) Agnello, M. (IT) 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) Haidlová, S. (CZ) Herman, T. (CZ) Isakov, Artem (UJF-V)_{ORCID, SAI} Khuntia, A. (CZ) Kotliarov, Artem (UJF-V)_{ORCID, SAI} Krupová, D. M. (CZ) Křížek, Filip (UJF-V)_{RID, ORCID, SAI} Kushpil, Svetlana (UJF-V)_{RID, ORCID, SAI} Šafařík, K. (CZ) Torres, S. R. (CZ) Závada, Petr (FZU-D)_{RID, ORCID}
Number of authors	1055
Article number	56
Source Title	Journal of High Energy Physics. - : Springer - ISSN 1029-8479 Roč. 2024, č. 1 (2024)
Number of pages	31 s.
Publication form	Print - P
Language	eng - English
Country	US - United States
Keywords	ALICE collaboration ; Hadron-Hadron scattering ; Mutli-Parton Interactions
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	001184450800001
EID SCOPUS	85188901940
DOI	10.1007/JHEP01(2024)056
Annotation	Measurements of charged-particle production in pp, p-Pb, and Pb-Pb collisions in the toward, away, and transverse regions with the ALICE detector are discussed. These regions are defined event-by-event relative to the azimuthal direction of the charged trigger particle, which is the reconstructed particle with the largest transverse momentum ( p(trig) (T)) in the range 8 < p(trig) (T) < 15 GeV/c. The toward and away regions contain the primary and recoil jets, respectively. Both regions are accompanied by the underlying event (UE). In contrast, the transverse region perpendicular to the direction of the trigger particle is dominated by the so-called UE dynamics, and includes also contributions from initial- and final-state radiation. The relative transverse activity classifier, R-T = N-ch(T)/< N-ch(T)>, is used to group events according to their UE activity, where < N-ch(T)> is the charged-particle multiplicity per event in the transverse region and.< N-ch(T)>. is the mean value over the whole analysed sample. The energy dependence of the R-T distributions in pp collisions at root s = 2.76, 5.02, 7, and 13TeV is reported, exploring the Koba-Nielsen-Olesen (KNO) scaling properties of the multiplicity distributions. The first measurements of charged-particle pT spectra as a function of RT in the three azimuthal regions in pp, p-Pb, and Pb-Pb collisions at root sNN = 5.02TeV are also reported. Data are compared with predictions obtained from the event generators PYTHIA 8 and EPOS LHC. This set of measurements is expected to contribute to the understanding of the origin of collective-like effects in small collision systems (pp and p-Pb).
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2025
Electronic address	https://doi.org/10.1007/JHEP01(2024)056

Number of the records: 1