Measurement of Suppression of Large-Radius Jets and Its Dependence on Substructure in Pb + Pb 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%2F00216208%3A11320%2F23%3A10476588" target="_blank" >RIV/00216208:11320/23:10476588 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/23:00581796 RIV/61989592:15310/23:73623100

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=2xa5J4Br3t" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=2xa5J4Br3t</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.131.172301" target="_blank" >10.1103/PhysRevLett.131.172301</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of Suppression of Large-Radius Jets and Its Dependence on Substructure in Pb + Pb Collisions at sNN=5.02 TeV with the ATLAS Detector

Popis výsledku v původním jazyce

This letter presents a measurement of the nuclear modification factor of large-radius jets inffiffiffiffiffiffiffiffisNNp1/45.02 TeV Pb þ Pb collisions by the ATLAS experiment. The measurement is performed using 1.72 nb-1and 257 pb-1 of Pb þ Pb and pp data, respectively. The large-radius jets are reconstructed with the anti-ktalgorithm using a radius parameter of R 1/4 1.0, by reclustering anti-kt R 1/4 0.2 jets, and are measured overthe transverse momentum (pT) kinematic range of 158 &lt; pT &lt; 1000 GeV and absolute pseudorapidityjyj &lt; 2.0. The large-radius jet constituents are further reclustered using the kt algorithm in order to obtainthe splitting parameters,ffiffiffiffiffiffiffid12pand ΔR12, which characterize the transverse momentum scale and angularseparation for the hardest splitting in the jet, respectively. The nuclear modification factor, RAA, obtained bycomparing the Pb þ Pb jet yields to those in pp collisions, is measured as a function of jet transversemomentum (pT ) andffiffiffiffiffiffiffid12por ΔR12. A significant difference in the quenching of large-radius jets havingsingle subjet and those with more complex substructure is observed. Systematic comparison of jetsuppression in terms of RAA for different jet definitions is also provided. Presented results support thehypothesis that jets with hard internal splittings lose more energy through quenching and provide a newperspective for understanding the role of jet structure in jet suppression.

Název v anglickém jazyce

Measurement of Suppression of Large-Radius Jets and Its Dependence on Substructure in Pb + Pb Collisions at sNN=5.02 TeV with the ATLAS Detector

Popis výsledku anglicky

This letter presents a measurement of the nuclear modification factor of large-radius jets inffiffiffiffiffiffiffiffisNNp1/45.02 TeV Pb þ Pb collisions by the ATLAS experiment. The measurement is performed using 1.72 nb-1and 257 pb-1 of Pb þ Pb and pp data, respectively. The large-radius jets are reconstructed with the anti-ktalgorithm using a radius parameter of R 1/4 1.0, by reclustering anti-kt R 1/4 0.2 jets, and are measured overthe transverse momentum (pT) kinematic range of 158 &lt; pT &lt; 1000 GeV and absolute pseudorapidityjyj &lt; 2.0. The large-radius jet constituents are further reclustered using the kt algorithm in order to obtainthe splitting parameters,ffiffiffiffiffiffiffid12pand ΔR12, which characterize the transverse momentum scale and angularseparation for the hardest splitting in the jet, respectively. The nuclear modification factor, RAA, obtained bycomparing the Pb þ Pb jet yields to those in pp collisions, is measured as a function of jet transversemomentum (pT ) andffiffiffiffiffiffiffid12por ΔR12. A significant difference in the quenching of large-radius jets havingsingle subjet and those with more complex substructure is observed. Systematic comparison of jetsuppression in terms of RAA for different jet definitions is also provided. Presented results support thehypothesis that jets with hard internal splittings lose more energy through quenching and provide a newperspective for understanding the role of jet structure in jet suppression.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/GA22-11846S" target="_blank" >GA22-11846S: Studium jetů a kvarkonií ve srážkách těžkých iontů</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Physical Review Letters

ISSN

0031-9007

e-ISSN

1079-7114

Svazek periodika

131

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

172301

Kód UT WoS článku

001257149500001

EID výsledku v databázi Scopus

2-s2.0-85176743787