Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at sNN=5.02 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00470665" target="_blank" >RIV/68378271:_____/16:00470665 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1140/epjc/s10052-016-4002-3" target="_blank" >http://dx.doi.org/10.1140/epjc/s10052-016-4002-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-016-4002-3" target="_blank" >10.1140/epjc/s10052-016-4002-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at sNN=5.02 TeV with the ATLAS detector

Popis výsledku v původním jazyce

The centrality dependence of the mean charged-particle multiplicity as a function of pseudorapidity is measured in approximately 1 upmu b1 of proton–lead collisions at a nucleon–nucleon centre-of-mass energy of sNN=5.02 TeV using the ATLAS detector at the Large Hadron Collider. Charged particles with absolute pseudorapidity less than 2.7 are reconstructed using the ATLAS pixel detector. The collision centrality is characterised by the total transverse energy measured in the Pb-going direction of the forward calorimeter. The charged-particle pseudorapidity distributions are found to vary strongly with centrality, with an increasing asymmetry between the proton-going and Pb-going directions as the collisions become more central. Three different estimations of the number of nucleons participating in the collision have been carried out using the Glauber model as well as two Glauber–Gribov inspired extensions to the Glauber model. Charged-particle multiplicities per participant pair are found to vary differently for these three models, highlighting the importance of including colour fluctuations in nucleon–nucleon collisions in the modelling of the initial state of collisions.n

Název v anglickém jazyce

Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at sNN=5.02 TeV with the ATLAS detector

Popis výsledku anglicky

The centrality dependence of the mean charged-particle multiplicity as a function of pseudorapidity is measured in approximately 1 upmu b1 of proton–lead collisions at a nucleon–nucleon centre-of-mass energy of sNN=5.02 TeV using the ATLAS detector at the Large Hadron Collider. Charged particles with absolute pseudorapidity less than 2.7 are reconstructed using the ATLAS pixel detector. The collision centrality is characterised by the total transverse energy measured in the Pb-going direction of the forward calorimeter. The charged-particle pseudorapidity distributions are found to vary strongly with centrality, with an increasing asymmetry between the proton-going and Pb-going directions as the collisions become more central. Three different estimations of the number of nucleons participating in the collision have been carried out using the Glauber model as well as two Glauber–Gribov inspired extensions to the Glauber model. Charged-particle multiplicities per participant pair are found to vary differently for these three models, highlighting the importance of including colour fluctuations in nucleon–nucleon collisions in the modelling of the initial state of collisions.n

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

—

Svazek periodika

76

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

28

Strana od-do

1-28

Kód UT WoS článku

000375306400002

EID výsledku v databázi Scopus

2-s2.0-84964402889