High-pT hadrons in nuclear collisions: from RHIC to LHC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F12%3A00199911" target="_blank" >RIV/68407700:21340/12:00199911 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.fis.utfsm.cl/HEP-2012/B2-viernes/Nemcik.pdf" target="_blank" >http://www.fis.utfsm.cl/HEP-2012/B2-viernes/Nemcik.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

High-pT hadrons in nuclear collisions: from RHIC to LHC

Popis výsledku v původním jazyce

We study high-pT hadron production in heavy-ion collisions and analyze several sources of the observed nuclear suppression by experiments at RHIC and LHC. Short production length l_p of a hadron produced during hadronization process causes a relation between the nuclear suppression of high-pT hadrons and survival probability of a colorless dipole propagating through a dense medium. This leads to a steep rise with pT of the nuclear modification factor R_{AA}(pT) due to color transparency effects. In comparison with LHC a dominance of quarks with larger l_p leads to a smaller suppression at RHIC where we include also the suppression factor falling steeply with x_T related to the energy conservation constraints. This factor is irrelevant at LHC but causesrather flat pT dependence of R_{AA} at RHIC. Calculations contain only medium density adjustment and we found the transport coefficient to be hat{q}_0 = 0.30-0.45 GeV^2/fm corresponding to sqrt{s} = 62-200 GeV at RHIC and hat{q}_0 = 0

Název v anglickém jazyce

High-pT hadrons in nuclear collisions: from RHIC to LHC

Popis výsledku anglicky

We study high-pT hadron production in heavy-ion collisions and analyze several sources of the observed nuclear suppression by experiments at RHIC and LHC. Short production length l_p of a hadron produced during hadronization process causes a relation between the nuclear suppression of high-pT hadrons and survival probability of a colorless dipole propagating through a dense medium. This leads to a steep rise with pT of the nuclear modification factor R_{AA}(pT) due to color transparency effects. In comparison with LHC a dominance of quarks with larger l_p leads to a smaller suppression at RHIC where we include also the suppression factor falling steeply with x_T related to the energy conservation constraints. This factor is irrelevant at LHC but causesrather flat pT dependence of R_{AA} at RHIC. Calculations contain only medium density adjustment and we found the transport coefficient to be hat{q}_0 = 0.30-0.45 GeV^2/fm corresponding to sqrt{s} = 62-200 GeV at RHIC and hat{q}_0 = 0

Druh

O - Ostatní výsledky

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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Projekt

<a href="/cs/project/LA08015" target="_blank" >LA08015: Spolupráce ČR s CERN</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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