Azimuthal Angle Correlations of Muons Produced via Heavy-Flavor Decays in 5.02 TeV Pb + Pb and pp Collisions with the ATLAS Detector
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494333" target="_blank" >RIV/00216208:11320/24:10494333 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68378271:_____/24:00616268 RIV/68407700:21220/24:00379764 RIV/68407700:21240/24:00379764 RIV/68407700:21340/24:00379764 a 2 dalších
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=~bvlXlfimX" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=~bvlXlfimX</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.132.202301" target="_blank" >10.1103/PhysRevLett.132.202301</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Azimuthal Angle Correlations of Muons Produced via Heavy-Flavor Decays in 5.02 TeV Pb + Pb and pp Collisions with the ATLAS Detector
Popis výsledku v původním jazyce
Angular correlations between heavy quarks provide a unique probe of the quark-gluon plasma created in ultrarelativistic heavy-ion collisions. Results are presented of a measurement of the azimuthal angle correlations between muons originating from semileptonic decays of heavy quarks produced in 5.02 TeV Pb + Pb and pp collisions at the LHC. The muons are measured with transverse momenta and pseudorapidities satisfying pμ T > 4 GeV and jημj < 2.4, respectively. The distributions of azimuthal angle separation Δϕ for muon pairs having pseudorapidity separation jΔηj > 0.8, are measured in different Pb + Pb centrality intervals and compared to the same distribution measured in pp collisions at the same center-of-mass energy. Results are presented separately for muon pairs with opposite-sign charges, samesign charges, and all pairs. A clear peak is observed in all Δϕ distributions at Δϕ TILDE OPERATOR+D91 π, consistent with the parent heavy-quark pairs being produced via hard-scattering processes. The widths of that peak, characterized using Cauchy-Lorentz fits to the Δϕ distributions, are found to not vary significantly as a function of Pb + Pb collision centrality and are similar for pp and Pb þ Pb collisions. This observation will provide important constraints on theoretical descriptions of heavy-quark interactions with the quark gluon plasma.
Název v anglickém jazyce
Azimuthal Angle Correlations of Muons Produced via Heavy-Flavor Decays in 5.02 TeV Pb + Pb and pp Collisions with the ATLAS Detector
Popis výsledku anglicky
Angular correlations between heavy quarks provide a unique probe of the quark-gluon plasma created in ultrarelativistic heavy-ion collisions. Results are presented of a measurement of the azimuthal angle correlations between muons originating from semileptonic decays of heavy quarks produced in 5.02 TeV Pb + Pb and pp collisions at the LHC. The muons are measured with transverse momenta and pseudorapidities satisfying pμ T > 4 GeV and jημj < 2.4, respectively. The distributions of azimuthal angle separation Δϕ for muon pairs having pseudorapidity separation jΔηj > 0.8, are measured in different Pb + Pb centrality intervals and compared to the same distribution measured in pp collisions at the same center-of-mass energy. Results are presented separately for muon pairs with opposite-sign charges, samesign charges, and all pairs. A clear peak is observed in all Δϕ distributions at Δϕ TILDE OPERATOR+D91 π, consistent with the parent heavy-quark pairs being produced via hard-scattering processes. The widths of that peak, characterized using Cauchy-Lorentz fits to the Δϕ distributions, are found to not vary significantly as a function of Pb + Pb collision centrality and are similar for pp and Pb þ Pb collisions. This observation will provide important constraints on theoretical descriptions of heavy-quark interactions with the quark gluon plasma.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10300 - Physical sciences
Návaznosti výsledku
Projekt
<a href="/cs/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Výzkum základních stavebních kamenů hmoty s využitím špičkových technologií</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Physical Review Letters
ISSN
0031-9007
e-ISSN
1079-7114
Svazek periodika
132
Číslo periodika v rámci svazku
20
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
23
Strana od-do
202301
Kód UT WoS článku
001271839000001
EID výsledku v databázi Scopus
2-s2.0-85193942982