Measurement of the charged-hadron spectra and nuclear modification factor in lead-lead collisions with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10369916" target="_blank" >RIV/00216208:11320/16:10369916 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.nuclphysbps.2016.05.073" target="_blank" >http://dx.doi.org/10.1016/j.nuclphysbps.2016.05.073</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nuclphysbps.2016.05.073" target="_blank" >10.1016/j.nuclphysbps.2016.05.073</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the charged-hadron spectra and nuclear modification factor in lead-lead collisions with the ATLAS detector

Popis výsledku v původním jazyce

The ATLAS experiment at the Large Hadron Collider (LHC) measures charged hadron spectra obtained in 2010 and 2011 lead-lead LHC data taking periods with total integrated statistics of 0.15 nb(-1). The results are compared to the pp spectra of charged hadrons at the same centre-of-mass energy based on the data sample with integrated luminosity of 4.2 pb(-1) obtained by the ATLAS experiment in 2011 and 2013. This allows a detailed comparison of the two collision systems in a wide transverse momentum (0.5 &lt; p(T) &lt; 150 GeV) and pseudorapidity (vertical bar eta vertical bar &lt; 2) ranges in different centrality intervals of Pb+Pb collision. The nuclear modification factor R-AA is presented in detail as a function of centrality, p(T) and eta. It shows a distinct p(T)-dependence with a pronounced minimum at about 7 GeV. Above 60 GeV, it is consistent with a flat, centrality-dependent, value within the uncertainties. The value is 0.55 +/- 0.01(stat.) +/- 0.04(syst.) in the most central collisions. The R-AA is observed to be consistent with flat vertical bar eta vertical bar dependence over the whole transverse momentum range in all centrality classes.

Název v anglickém jazyce

Measurement of the charged-hadron spectra and nuclear modification factor in lead-lead collisions with the ATLAS detector

Popis výsledku anglicky

The ATLAS experiment at the Large Hadron Collider (LHC) measures charged hadron spectra obtained in 2010 and 2011 lead-lead LHC data taking periods with total integrated statistics of 0.15 nb(-1). The results are compared to the pp spectra of charged hadrons at the same centre-of-mass energy based on the data sample with integrated luminosity of 4.2 pb(-1) obtained by the ATLAS experiment in 2011 and 2013. This allows a detailed comparison of the two collision systems in a wide transverse momentum (0.5 &lt; p(T) &lt; 150 GeV) and pseudorapidity (vertical bar eta vertical bar &lt; 2) ranges in different centrality intervals of Pb+Pb collision. The nuclear modification factor R-AA is presented in detail as a function of centrality, p(T) and eta. It shows a distinct p(T)-dependence with a pronounced minimum at about 7 GeV. Above 60 GeV, it is consistent with a flat, centrality-dependent, value within the uncertainties. The value is 0.55 +/- 0.01(stat.) +/- 0.04(syst.) in the most central collisions. The R-AA is observed to be consistent with flat vertical bar eta vertical bar dependence over the whole transverse momentum range in all centrality classes.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LG15052" target="_blank" >LG15052: Zkoumání mikrosvěta s využitím infrastruktury CERN</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS

ISBN

—

ISSN

2405-6014

e-ISSN

neuvedeno

Počet stran výsledku

4

Strana od-do

317-320

Název nakladatele

ELSEVIER SCIENCE BV

Místo vydání

AMSTERDAM

Místo konání akce

McGill Univ, Montreal

Datum konání akce

29. 6. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000379282900073