Study of charged particle production at high pTusing event topology in pp, p-Pband Pb-Pbcollisions at v root NN=5.02TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00369716" target="_blank" >RIV/68407700:21340/23:00369716 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.physletb.2022.137649" target="_blank" >https://doi.org/10.1016/j.physletb.2022.137649</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2022.137649" target="_blank" >10.1016/j.physletb.2022.137649</a>

Result language

angličtina

Original language name

Study of charged particle production at high pTusing event topology in pp, p-Pband Pb-Pbcollisions at v root NN=5.02TeV

Original language description

This letter reports measurements which characterize the underlying event associated with hard scatterings at mid-pseudorapidity (|eta| < 0.8) in pp, p-Pband Pb-Pb collisions at centre-of-mass energy per nucleon pair, root sNN= 5.02TeV. The measurements are performed with ALICE at the LHC. Different multiplicity classes are defined based on the event activity measured at forward rapidities. The hard scatterings are identified by the leading particle defined as the charged particle with the largest transverse momentum (pT) in the collision and having 8< pT< 15GeV/c. The p(T) spectra of associated particles (0.5= pT< 6GeV/c) are measured in different azimuthal regions defined with respect to the leading particle direction: toward, transverse, and away. The associated charged particle yields in the transverse region are subtracted from those of the away and toward regions. The remaining jet-like yields are reported as a function of the multiplicity measured in the transverse region. The measurements show a suppression of the jet-like yield in the away region and an enhancement of high-p(T) associated particles in the toward region in central Pb-Pb collisions, as compared to minimum-bias pp collisions. These observations are consistent with previous measurements that used two-particle correlations, and with an interpretation in terms of parton energy loss in a high-density quark gluon plasma. These yield modifications vanish in peripheral Pb-Pb collisions and are not observed in either high-multiplicity pp or p-Pb collisions. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/LM2018104" target="_blank" >LM2018104: Research Infrastructure for experiments at CERN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

Physics Letters B

ISSN

0370-2693

e-ISSN

1873-2445

Volume of the periodical

843

Issue of the periodical within the volume

Aug

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

14

Pages from-to

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UT code for WoS article

001057186200001

EID of the result in the Scopus database

2-s2.0-85162990010