System-size dependence of the charged-particle pseudorapidity density at √sNN=5.02 TeV for pp, p-Pb, and Pb-Pb collisions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00579688" target="_blank" >RIV/61389005:_____/23:00579688 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/23:00579688 RIV/68407700:21340/23:00369519

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2023.137730" target="_blank" >https://doi.org/10.1016/j.physletb.2023.137730</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2023.137730" target="_blank" >10.1016/j.physletb.2023.137730</a>

Jazyk výsledku

angličtina

Název v původním jazyce

System-size dependence of the charged-particle pseudorapidity density at √sNN=5.02 TeV for pp, p-Pb, and Pb-Pb collisions

Popis výsledku v původním jazyce

We present the first systematic comparison of the charged-particle pseudorapidity densities for three widely different collision systems, pp, p-Pb, and Pb-Pb, at the top energy of the Large Hadron Collider (root S-NN = 5.02 TeV) measured over a wide pseudorapidity range (-3.5 < eta < 5), the widest possible among the four experiments at that facility. The systematic uncertainties are minimised since the measurements are recorded by the same experimental apparatus (ALICE). The distributions for p-Pb and Pb-Pb collisions are determined as a function of the centrality of the collisions, while results from pp collisions are reported for inelastic events with at least one charged particle at midrapidity. The charged-particle pseudorapidity densities are, under simple and robust assumptions, transformed to charged-particle rapidity densities. This allows for the calculation and the presentation of the evolution of the width of the rapidity distributions and of a lower bound on the Bjorken energy density, as a function of the number of participants in all three collision systems. We find a decreasing width of the particle production, and roughly a smooth ten fold increase in the energy density, as the system size grows, which is consistent with a gradually higher dense phase of matter.

Název v anglickém jazyce

System-size dependence of the charged-particle pseudorapidity density at √sNN=5.02 TeV for pp, p-Pb, and Pb-Pb collisions

Popis výsledku anglicky

We present the first systematic comparison of the charged-particle pseudorapidity densities for three widely different collision systems, pp, p-Pb, and Pb-Pb, at the top energy of the Large Hadron Collider (root S-NN = 5.02 TeV) measured over a wide pseudorapidity range (-3.5 < eta < 5), the widest possible among the four experiments at that facility. The systematic uncertainties are minimised since the measurements are recorded by the same experimental apparatus (ALICE). The distributions for p-Pb and Pb-Pb collisions are determined as a function of the centrality of the collisions, while results from pp collisions are reported for inelastic events with at least one charged particle at midrapidity. The charged-particle pseudorapidity densities are, under simple and robust assumptions, transformed to charged-particle rapidity densities. This allows for the calculation and the presentation of the evolution of the width of the rapidity distributions and of a lower bound on the Bjorken energy density, as a function of the number of participants in all three collision systems. We find a decreasing width of the particle production, and roughly a smooth ten fold increase in the energy density, as the system size grows, which is consistent with a gradually higher dense phase of matter.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

<a href="/cs/project/LM2018104" target="_blank" >LM2018104: Výzkumná infrastruktura pro experimenty v CERN</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

845

Číslo periodika v rámci svazku

OCT

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

137730

Kód UT WoS článku

001102283500001

EID výsledku v databázi Scopus

2-s2.0-85172692647