Gluon shadowing at small x from coherent J/psi photoproduction data at energies available at the CERN Large Hadron Collider

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00318515" target="_blank" >RIV/68407700:21340/17:00318515 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevC.96.015203" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.96.015203</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.96.015203" target="_blank" >10.1103/PhysRevC.96.015203</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gluon shadowing at small x from coherent J/psi photoproduction data at energies available at the CERN Large Hadron Collider

Popis výsledku v původním jazyce

The cross section for coherent J/psi photoproduction in Pb-Pb collisions is the sum of two contributions: one from low-energy and the other from high-energy photon-nucleus interactions. A novel method to disentangle the two contributions, allowing one to extract the coherent photo-nuclear cross section for coherent J/psi production, sigma(gamma).(Pb) , is presented. The utility of the method is demonstrated using measurements from peripheral and ultraperipheral Pb-Pb collisions at the CERN Large Hadron Collider. Applying the proposed method to the available data, it is possible to obtain sigma(gamma).(Pb) up to a photon-lead center-of-mass energy of 470 GeV, which corresponds to x of 4.4 x 10(-5). To illustrate a possible use of the extracted photonuclear cross sections, the corresponding nuclear suppression factors are computed and they are compared to predictions of gluon shadowing calculated in the leading-twist approximation approach.

Název v anglickém jazyce

Gluon shadowing at small x from coherent J/psi photoproduction data at energies available at the CERN Large Hadron Collider

Popis výsledku anglicky

The cross section for coherent J/psi photoproduction in Pb-Pb collisions is the sum of two contributions: one from low-energy and the other from high-energy photon-nucleus interactions. A novel method to disentangle the two contributions, allowing one to extract the coherent photo-nuclear cross section for coherent J/psi production, sigma(gamma).(Pb) , is presented. The utility of the method is demonstrated using measurements from peripheral and ultraperipheral Pb-Pb collisions at the CERN Large Hadron Collider. Applying the proposed method to the available data, it is possible to obtain sigma(gamma).(Pb) up to a photon-lead center-of-mass energy of 470 GeV, which corresponds to x of 4.4 x 10(-5). To illustrate a possible use of the extracted photonuclear cross sections, the corresponding nuclear suppression factors are computed and they are compared to predictions of gluon shadowing calculated in the leading-twist approximation approach.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/LG15052" target="_blank" >LG15052: Zkoumání mikrosvěta s využitím infrastruktury CERN</a><br>

Návaznosti

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

Rok uplatnění

2017

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

96

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000405709500003

EID výsledku v databázi Scopus

2-s2.0-85025665924