Coherent J/ψ photoproduction at midrapidity in Pb−Pb collisions at √sNN=5.02 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00645504" target="_blank" >RIV/61389005:_____/25:00645504 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/25:00645504

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0370269325007105" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0370269325007105</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2025.139952" target="_blank" >10.1016/j.physletb.2025.139952</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Coherent J/ψ photoproduction at midrapidity in Pb−Pb collisions at √sNN=5.02 TeV

Popis výsledku v původním jazyce

The coherent J/ ψ photoproduction cross section is measured for the first time at midrapidity in peripheral to semicentral Pb−Pb collisions at sNN=5.02 TeV. The centrality differential cross section d σ /d y is reported for the centrality range 40–90%, together with the doubly-differential cross section d2 σ /d y d p T, extracted in two peripheral centrality classes. The J/ ψ mesons are reconstructed in the dielectron channel, in the rapidity interval | y | < 0.9 using the ALICE central barrel detectors. The J/ ψ cross section at midrapidity is statistically compatible to the earlier ALICE measurement at forward rapidity and at the same centre-of-mass energy, and shows only a mild centrality dependence over the covered range. Several sets of theoretical calculations taking into account the hadronic overlap in the collisions but ignoring possible final-state effects from a hot expanding medium are found to give a fairly good description of the current measurements within uncertainties.

Název v anglickém jazyce

Coherent J/ψ photoproduction at midrapidity in Pb−Pb collisions at √sNN=5.02 TeV

Popis výsledku anglicky

The coherent J/ ψ photoproduction cross section is measured for the first time at midrapidity in peripheral to semicentral Pb−Pb collisions at sNN=5.02 TeV. The centrality differential cross section d σ /d y is reported for the centrality range 40–90%, together with the doubly-differential cross section d2 σ /d y d p T, extracted in two peripheral centrality classes. The J/ ψ mesons are reconstructed in the dielectron channel, in the rapidity interval | y | < 0.9 using the ALICE central barrel detectors. The J/ ψ cross section at midrapidity is statistically compatible to the earlier ALICE measurement at forward rapidity and at the same centre-of-mass energy, and shows only a mild centrality dependence over the covered range. Several sets of theoretical calculations taking into account the hadronic overlap in the collisions but ignoring possible final-state effects from a hot expanding medium are found to give a fairly good description of the current measurements within uncertainties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

871

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

139952

Kód UT WoS článku

001652171000001

EID výsledku v databázi Scopus

2-s2.0-105024351334