Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 76, Issue 5, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-016-4070-4
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Funding
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWFW, Austria
- FWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq, Brazil
- FAPESP, Brazil
- NSERC, Canada
- NRC, Canada
- CFI, Canada
- CERN
- CONICYT, Chile
- CAS, China
- MOST, China
- NSFC, China
- COLCIENCIAS, Colombia
- MSMT CR, Czech Republic
- MPO CR, Czech Republic
- VSC CR, Czech Republic
- DNRF, Denmark
- DNSRC, Denmark
- IN2P3-CNRS, France
- CEA-DSM/IRFU, France
- GNSF, Georgia
- BMBF, Germany
- HGF, Germany
- MPG, Germany
- GSRT, Greece
- RGC, Hong Kong SAR, China
- ISF, Israel
- I-CORE, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- FOM, Netherlands
- NWO, Netherlands
- RCN, Norway
- MNiSW, Poland
- NCN, Poland
- FCT, Portugal
- MNE/IFA, Romania
- MES of Russia
- NRC KI, Russian Federation
- JINR
- MESTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MIZS, Slovenia
- DST/NRF, South Africa
- MINECO, Spain
- SRC, Sweden
- Wallenberg Foundation, Sweden
- SERI, Switzerland
- SNSF, Switzerland
- Cantons of Bern and Geneva, Switzerland
- MOST, Taiwan
- TAEK, Turkey
- STFC, United Kingdom
- DOE, United States of America
- NSF, United States of America
- BCKDF
- Canada Council
- CANARIE
- CRC
- Compute Canada
- FQRNT
- Ontario InnovationTrust, Canada
- EPLANET
- ERC
- FP7
- Horizon 2020
- Marie Sklodowska-Curie Actions, European Union
- Investissements d'Avenir Labex and Idex
- ANR
- Region Auvergne
- Fondation Partager le Savoir, France
- DFG
- AvH Foundation, Germany
- EU-ESF
- Greek NSRF
- BSF
- GIF
- Minerva
- BRF, Norway
- Royal Society, United Kingdom
- Leverhulme Trust, United Kingdom
- ICREA Funding Source: Custom
- STFC [ST/K003895/1, ST/L006111/1, ST/J004979/1, ST/I000119/1, ST/N000463/1, ST/K000039/1, ST/M004937/1, ST/N000307/1, ST/P002439/1, ST/I003533/1] Funding Source: UKRI
- Division Of Physics
- Direct For Mathematical & Physical Scien [1410972, 1119200] Funding Source: National Science Foundation
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Distributions of transverse momentum p(T)(ll) and the related angular variable phi(eta)*. of Drell-Yan lepton pairs are measured in 20.3 fb(-1) of proton-proton collisions at root s = 8 TeV 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 proton-proton collisions at root s = 7 TeV, 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 phi(eta)*. < 1 the predictions from the Monte Carlo generator ResBos are generally consistent with the data within the theoretical uncertainties. However, at larger values of phi(eta)*. 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 p(T)(ll) while the fixed-order prediction of Dynnlo falls below the data at high values of p(T)(ll). ResBos and the parton-shower Monte Carlo generators provide a much better description of the evolution of the phi(eta)*. and p(T)(ll) distributions as a function of lepton-pair mass and rapidity than the basic shape of the data.
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