J/ψ PHOTOPRODUCTION RESULTS FROM ALICE

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00372053" target="_blank" >RIV/68407700:21340/23:00372053 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.5506/APhysPolBSupp.16.1-A98" target="_blank" >https://doi.org/10.5506/APhysPolBSupp.16.1-A98</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5506/APhysPolBSupp.16.1-A98" target="_blank" >10.5506/APhysPolBSupp.16.1-A98</a>

Jazyk výsledku

angličtina

Název v původním jazyce

J/ψ PHOTOPRODUCTION RESULTS FROM ALICE

Popis výsledku v původním jazyce

Diffractive photoproduction of J/psi vector mesons is studied at the LHC with the ALICE detector in p-Pb and Pb-Pb ultra-peripheral collisions (UPCs), where the Pb ions act as powerful sources of quasi-real photons. In this contribution, the first measurement at the LHC of dissociative photoproduction of J/psi off protons is presented; this process is sensitive to quantum fluctuations of the structure of the target at the subnucleon level. In addition, cross sections for the exclusive channel and for continuum dimuon production at small masses were obtained in the same kinematic region. This latter process probes our simultaneous understanding, in a new kinematic region, of the photon flux emitted by protons and by lead ions. The transverse momentum dependence of J/psi photoproduction on lead targets in Pb-Pb collisions at midrapidity, which is sensitive to the gluonic structure of Pb in the impact-parameter plane, is also presented. The measurement of J/psi photoproduction off hadrons sheds light onto the initial state of QCD targets and provides important constraints on the initial conditions used in hydrodynamical models of heavy-ion collisions.

Název v anglickém jazyce

J/ψ PHOTOPRODUCTION RESULTS FROM ALICE

Popis výsledku anglicky

Diffractive photoproduction of J/psi vector mesons is studied at the LHC with the ALICE detector in p-Pb and Pb-Pb ultra-peripheral collisions (UPCs), where the Pb ions act as powerful sources of quasi-real photons. In this contribution, the first measurement at the LHC of dissociative photoproduction of J/psi off protons is presented; this process is sensitive to quantum fluctuations of the structure of the target at the subnucleon level. In addition, cross sections for the exclusive channel and for continuum dimuon production at small masses were obtained in the same kinematic region. This latter process probes our simultaneous understanding, in a new kinematic region, of the photon flux emitted by protons and by lead ions. The transverse momentum dependence of J/psi photoproduction on lead targets in Pb-Pb collisions at midrapidity, which is sensitive to the gluonic structure of Pb in the impact-parameter plane, is also presented. The measurement of J/psi photoproduction off hadrons sheds light onto the initial state of QCD targets and provides important constraints on the initial conditions used in hydrodynamical models of heavy-ion collisions.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LM2018104" target="_blank" >LM2018104: Výzkumná infrastruktura pro experimenty v CERN</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 statě ve sborníku

ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT

ISBN

—

ISSN

1899-2358

e-ISSN

2082-7865

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

Jagiellonian University in Krakow

Místo vydání

Krakow

Místo konání akce

Krakow

Datum konání akce

4. 4. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001071843100098