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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00584993" target="_blank" >RIV/61389005:_____/24:00584993 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/24:00584993 RIV/68407700:21340/24:00377077

Result on the web

<a href="https://doi.org/10.1007/JHEP01(2024)056" target="_blank" >https://doi.org/10.1007/JHEP01(2024)056</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP01(2024)056" target="_blank" >10.1007/JHEP01(2024)056</a>

Result language

angličtina

Original language name

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

Original language description

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).

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10304 - Nuclear physics

Project

<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Volume of the periodical

2024

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

31

Pages from-to

56

UT code for WoS article

001184450800001

EID of the result in the Scopus database

2-s2.0-85188901940