Measurement of the transverse momentum and ϕη∗ distributions of Drell–Yan lepton pairs in proton–proton collisions at √s = 8 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1140/epjc/s10052-016-4070-4

Scientific article

English

Measurement of the transverse momentum and ϕη∗ distributions of Drell–Yan lepton pairs in proton–proton collisions at √s = 8 TeV with the ATLAS detector

Contributors

ATLAS Collaboration

Published in

European physical journal. C, Particles and fields, vol. 76, no. 5, 291

Collection

Open Access - SCOAP3

Publication date

2016

Abstract

Distributions of transverse momentum pTℓℓ and the related angular variable ϕη∗ of DrellΓÇôYan lepton pairs are measured in 20.3┬áfb -1 of protonΓÇôproton collisions at s=8 ┬áTeV with the ATLAS detector at the LHC. Measurements in electron-pair and muon-pair final states are corrected for detector effects and combined. Compared to previous measurements in protonΓÇôproton collisions at s=7 ┬áTeV, these new measurements benefit from a larger data sample and improved control of systematic uncertainties. Measurements are performed in bins of lepton-pair mass above, around and below the Z -boson mass peak. The data are compared to predictions from perturbative and resummed QCD calculations. For values of ϕη∗<1 the predictions from the Monte Carlo generator ResBos are generally consistent with the data within the theoretical uncertainties. However, at larger values of ϕη∗ this is not the case. Monte Carlo generators based on the parton-shower approach are unable to describe the data over the full range of pTℓℓ while the fixed-order prediction of Dynnlo falls below the data at high values of pTℓℓ . ResBos and the parton-shower Monte Carlo generators provide a much better description of the evolution of the ϕη∗ and pTℓℓ distributions as a function of lepton-pair mass and rapidity than the basic shape of the data.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

ATLAS Collaboration. Measurement of the transverse momentum and ϕη∗ distributions of Drell–Yan lepton pairs in proton–proton collisions at √s = 8 TeV with the ATLAS detector. In: European physical journal. C, Particles and fields, 2016, vol. 76, n° 5, p. 291. doi: 10.1140/epjc/s10052-016-4070-4

Article (Published version)

CC BY

Identifiers

PID : unige:84170
DOI : 10.1140/epjc/s10052-016-4070-4

Journal ISSN

1434-6044

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367downloads

Creation

03/06/2016 14:14:32

First validation

03/06/2016 14:14:32

Update

13/10/2025 20:55:13

Status update

15/03/2023 00:24:44

Last indexation

10/11/2026 17:21:34

Measurement of the transverse momentum and ϕη∗ distributions of Drell–Yan lepton pairs in proton–proton collisions at √s = 8 TeV with the ATLAS detector

Contributors

Collaborators

Published in

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Publication date

Abstract

UNIGE affiliation entities

Citation (ISO format)

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Technical informations

Creation

First validation

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Status update

Last indexation