Multiplicity and event-scale dependent flow and jet fragmentation in pp collisions at root s=13 TeV and in p-Pb collisions at root sNN=5.02 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00377083" target="_blank" >RIV/68407700:21340/24:00377083 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1007/JHEP03(2024)092" target="_blank" >https://doi.org/10.1007/JHEP03(2024)092</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP03(2024)092" target="_blank" >10.1007/JHEP03(2024)092</a>

Result language

angličtina

Original language name

Multiplicity and event-scale dependent flow and jet fragmentation in pp collisions at root s=13 TeV and in p-Pb collisions at root sNN=5.02 TeV

Original language description

Long- and short-range correlations for pairs of charged particles are studied via two-particle angular correlations in pp collisions at root s = 13TeV and p-Pb collisions at root s(NN) = 5.02TeV. The correlation functions are measured as a function of relative azimuthal angle Delta phi and pseudorapidity separation Delta eta for pairs of primary charged particles within the pseudorapidity interval vertical bar eta vertical bar < 0.9 and the transverse-momentum interval 1 < p(T) < 4 GeV/c. Flow coefficients are extracted for the long-range correlations ( 1.6 < vertical bar Delta eta vertical bar < 1.8) in various high-multiplicity event classes using the low-multiplicity template fit method. The method is used to subtract the enhanced yield of away-side jet fragments in high-multiplicity events. These results show decreasing flow signals toward lower multiplicity events. Furthermore, the flow coefficients for events with hard probes, such as jets or leading particles, do not exhibit any significant changes compared to those obtained from high-multiplicity events without any specific event selection criteria. The results are compared with hydrodynamic-model calculations, and it is found that a better understanding of the initial conditions is necessary to describe the results, particularly for low-multiplicity events.

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

Continuities

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

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

3

Country of publishing house

DE - GERMANY

Number of pages

35

Pages from-to

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UT code for WoS article

001194597000001

EID of the result in the Scopus database

2-s2.0-85195199881