Semi-inclusive direct photon plus jet and π0+jet correlations measured in p plus p and central Au plus Au collisions at root sNN=200 GeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00388760" target="_blank" >RIV/68407700:21340/25:00388760 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/8b8y-98yh" target="_blank" >https://doi.org/10.1103/8b8y-98yh</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/8b8y-98yh" target="_blank" >10.1103/8b8y-98yh</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Semi-inclusive direct photon plus jet and π0+jet correlations measured in p plus p and central Au plus Au collisions at root sNN=200 GeV

Popis výsledku v původním jazyce

The Solenoidal Tracker at RHIC (STAR) experiment at the Relativistic Heavy Ion Collider reports new measurements of jet quenching based on the semi-inclusive distribution of charged-particle jets recoiling from direct photon (gamma(dir)) and neutral pion (pi(0)) triggers in pp and central Au + Au collisions at root s(NN) = 200 GeV for triggers in the range 9 < E-T(trig) < 20 GeV. The datasets have integrated luminosities of 3.9 nb(-1) for Au + Au and 23 pb(-1) for pp collisions. Jets are reconstructed using the anti-k(T) algorithm with resolution parameters R = 0.2 and 0.5. The large uncorrelated jet background in central Au + Au collisions is corrected using a mixed-event approach, which enables precise charged-particle jet measurements at low transverse momentum p(T,jet)(ch) and large R. Recoil-jet distributions are reported in the range p(T,jet)(ch) < 25 GeV/c. Comparison of the distributions measured in pp and Au + Au collisions reveals strong medium-induced jet yield suppression for R = 0.2 with markedly less suppression for R = 0.5. Comparison is also made to theoretical models incorporating jet quenching. These data provide new insight into the mechanisms underlying jet quenching and the angular dependence of medium-induced jet-energy transport and provide new constraints on modeling such effects.

Název v anglickém jazyce

Semi-inclusive direct photon plus jet and π0+jet correlations measured in p plus p and central Au plus Au collisions at root sNN=200 GeV

Popis výsledku anglicky

The Solenoidal Tracker at RHIC (STAR) experiment at the Relativistic Heavy Ion Collider reports new measurements of jet quenching based on the semi-inclusive distribution of charged-particle jets recoiling from direct photon (gamma(dir)) and neutral pion (pi(0)) triggers in pp and central Au + Au collisions at root s(NN) = 200 GeV for triggers in the range 9 < E-T(trig) < 20 GeV. The datasets have integrated luminosities of 3.9 nb(-1) for Au + Au and 23 pb(-1) for pp collisions. Jets are reconstructed using the anti-k(T) algorithm with resolution parameters R = 0.2 and 0.5. The large uncorrelated jet background in central Au + Au collisions is corrected using a mixed-event approach, which enables precise charged-particle jet measurements at low transverse momentum p(T,jet)(ch) and large R. Recoil-jet distributions are reported in the range p(T,jet)(ch) < 25 GeV/c. Comparison of the distributions measured in pp and Au + Au collisions reveals strong medium-induced jet yield suppression for R = 0.2 with markedly less suppression for R = 0.5. Comparison is also made to theoretical models incorporating jet quenching. These data provide new insight into the mechanisms underlying jet quenching and the angular dependence of medium-induced jet-energy transport and provide new constraints on modeling such effects.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LM2023034" target="_blank" >LM2023034: Brookhavenská národní laboratoř – účast České republiky</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

PHYSICAL REVIEW C

ISSN

2469-9985

e-ISSN

2469-9993

Svazek periodika

111

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

30

Strana od-do

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Kód UT WoS článku

001519232500001

EID výsledku v databázi Scopus

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