Measurement of the double-differential high-mass Drell-Yan cross section in pp collisions at s = 8 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00471731" target="_blank" >RIV/68378271:_____/16:00471731 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/JHEP08(2016)009" target="_blank" >http://dx.doi.org/10.1007/JHEP08(2016)009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP08(2016)009" target="_blank" >10.1007/JHEP08(2016)009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the double-differential high-mass Drell-Yan cross section in pp collisions at s = 8 TeV with the ATLAS detector

Popis výsledku v původním jazyce

This paper presents a measurement of the double-differential cross section for the Drell-Yan Z/γ∗ ℓ+ ℓ and photon-induced γγ ℓ+ ℓ processes where ℓ is an electron or muon. The measurement is performed for invariant masses of the lepton pairs, mℓℓ, between 116 GeV and 1500 GeV using a sample of 20.3 fb1 of pp collisions data at centre-of-mass energy of s=8 TeV collected by the ATLAS detector at the LHC in 2012. The data are presented double differentially in invariant mass and absolute dilepton rapidity as well as in invariant mass and absolute pseudorapidity separation of the lepton pair. The single-differential cross section as a function of mℓℓ is also reported. The electron and muon channel measurements are combined and a total experimental precision of better than 1% is achieved at low mℓℓ. A comparison to next-to-next-to-leading order perturbative QCD predictions using several recent parton distribution functions and including next-to-leading order electroweak effects indicates the potential of the data to constrain parton distribution functions. In particular, a large impact of the data on the photon PDF is demonstrated.

Název v anglickém jazyce

Measurement of the double-differential high-mass Drell-Yan cross section in pp collisions at s = 8 TeV with the ATLAS detector

Popis výsledku anglicky

This paper presents a measurement of the double-differential cross section for the Drell-Yan Z/γ∗ ℓ+ ℓ and photon-induced γγ ℓ+ ℓ processes where ℓ is an electron or muon. The measurement is performed for invariant masses of the lepton pairs, mℓℓ, between 116 GeV and 1500 GeV using a sample of 20.3 fb1 of pp collisions data at centre-of-mass energy of s=8 TeV collected by the ATLAS detector at the LHC in 2012. The data are presented double differentially in invariant mass and absolute dilepton rapidity as well as in invariant mass and absolute pseudorapidity separation of the lepton pair. The single-differential cross section as a function of mℓℓ is also reported. The electron and muon channel measurements are combined and a total experimental precision of better than 1% is achieved at low mℓℓ. A comparison to next-to-next-to-leading order perturbative QCD predictions using several recent parton distribution functions and including next-to-leading order electroweak effects indicates the potential of the data to constrain parton distribution functions. In particular, a large impact of the data on the photon PDF is demonstrated.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

—

Svazek periodika

2016

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

61

Strana od-do

—

Kód UT WoS článku

000391750700001

EID výsledku v databázi Scopus

2-s2.0-84981212651