Precise measurements of W- and Z-boson transverse momentum spectra with the ATLAS detector using pp collisions at root s=5.02 TeV and 13 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F24%3A00380647" target="_blank" >RIV/68407700:21220/24:00380647 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21240/24:00380647 RIV/68407700:21340/24:00380647 RIV/68407700:21670/24:00380647

Výsledek na webu

<a href="https://doi.org/10.1140/epjc/s10052-024-13414-0" target="_blank" >https://doi.org/10.1140/epjc/s10052-024-13414-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-024-13414-0" target="_blank" >10.1140/epjc/s10052-024-13414-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Precise measurements of W- and Z-boson transverse momentum spectra with the ATLAS detector using pp collisions at root s=5.02 TeV and 13 TeV

Popis výsledku v původním jazyce

This paper describes measurements of the transverse momentum spectra of W and Z bosons produced in proton-proton collisions at centre-of-mass energies of root s = 5.02 TeV and root s = 13 TeV with the ATLAS experiment at the Large Hadron Collider. Measurements are performed in the electron and muon channels, W -> l nu and Z -> ll (l = e or mu), and for W events further separated by charge. The data were collected in 2017 and 2018, in dedicated runs with reduced instantaneous luminosity, and correspond to 255 and 338 pb(-1) at root s = 5.02 TeV and 13 TeV, respectively. These conditions optimise the reconstruction of the W-boson transverse momentum. The distributions observed in the electron and muon channels are unfolded, combined, and compared to QCD calculations based on parton shower Monte Carlo event generators and analytical resummation. The description of the transverse momentum distributions by Monte Carlo event generators is imperfect and shows significant differences largely common to W-, W+ and Z production. The agreement is better at root s = 5.02 TeV, especvially for predictions that were tuned to Z production data at root s = 7 TeV. Higher-order, resummed predictions based on DYTURBO generally match the data best across the spectra. Distribution ratios are also presented and test the understanding of differences between the production processes.

Název v anglickém jazyce

Precise measurements of W- and Z-boson transverse momentum spectra with the ATLAS detector using pp collisions at root s=5.02 TeV and 13 TeV

Popis výsledku anglicky

This paper describes measurements of the transverse momentum spectra of W and Z bosons produced in proton-proton collisions at centre-of-mass energies of root s = 5.02 TeV and root s = 13 TeV with the ATLAS experiment at the Large Hadron Collider. Measurements are performed in the electron and muon channels, W -> l nu and Z -> ll (l = e or mu), and for W events further separated by charge. The data were collected in 2017 and 2018, in dedicated runs with reduced instantaneous luminosity, and correspond to 255 and 338 pb(-1) at root s = 5.02 TeV and 13 TeV, respectively. These conditions optimise the reconstruction of the W-boson transverse momentum. The distributions observed in the electron and muon channels are unfolded, combined, and compared to QCD calculations based on parton shower Monte Carlo event generators and analytical resummation. The description of the transverse momentum distributions by Monte Carlo event generators is imperfect and shows significant differences largely common to W-, W+ and Z production. The agreement is better at root s = 5.02 TeV, especvially for predictions that were tuned to Z production data at root s = 7 TeV. Higher-order, resummed predictions based on DYTURBO generally match the data best across the spectra. Distribution ratios are also presented and test the understanding of differences between the production processes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

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)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

84

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

60

Strana od-do

—

Kód UT WoS článku

001394612200001

EID výsledku v databázi Scopus

2-s2.0-85208706028