Z boson production in Pb plus Pb collisions at root S-NN=5.02 TeV measured by the ATLAS experiment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73601016" target="_blank" >RIV/61989592:15310/20:73601016 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/20:00346793 RIV/68407700:21340/20:00346793 RIV/68407700:21670/20:00346793 RIV/00216208:11320/20:10423474

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0370269320300666" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0370269320300666</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2020.135262" target="_blank" >10.1016/j.physletb.2020.135262</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Z boson production in Pb plus Pb collisions at root S-NN=5.02 TeV measured by the ATLAS experiment

Popis výsledku v původním jazyce

The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at /S-NN = 5.02 TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of 0.49 nb(-1) are used for the analysis. The Z boson yield, normalised by the total number of minimum-bias events and the mean nuclear thickness function, is measured as a function of dilepton rapidity and event centrality. The measurements in Pb+Pb collisions are compared with similar measurements made in proton-proton collisions at the same centre-of-mass energy. The nuclear modification factor is found to be consistent with unity for all centrality intervals. The results are compared with theoretical predictions obtained at next-to-leading order using nucleon and nuclear parton distribution functions. The normalised Z boson yields in Pb+Pb collisions lie 1-3a above the predictions. The nuclear modification factor measured as a function of rapidity agrees with unity and is consistent with a next-to-leading-order QCD calculation including the isospin effect.

Název v anglickém jazyce

Z boson production in Pb plus Pb collisions at root S-NN=5.02 TeV measured by the ATLAS experiment

Popis výsledku anglicky

The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at /S-NN = 5.02 TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of 0.49 nb(-1) are used for the analysis. The Z boson yield, normalised by the total number of minimum-bias events and the mean nuclear thickness function, is measured as a function of dilepton rapidity and event centrality. The measurements in Pb+Pb collisions are compared with similar measurements made in proton-proton collisions at the same centre-of-mass energy. The nuclear modification factor is found to be consistent with unity for all centrality intervals. The results are compared with theoretical predictions obtained at next-to-leading order using nucleon and nuclear parton distribution functions. The normalised Z boson yields in Pb+Pb collisions lie 1-3a above the predictions. The nuclear modification factor measured as a function of rapidity agrees with unity and is consistent with a next-to-leading-order QCD calculation including the isospin effect.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

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

Návaznosti

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

Rok uplatnění

2020

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

—

Svazek periodika

802

Číslo periodika v rámci svazku

MAR

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

23

Strana od-do

"135262-1"-"135262-23"

Kód UT WoS článku

000515091400074

EID výsledku v databázi Scopus

2-s2.0-85079047734