期刊
EUROPEAN PHYSICAL JOURNAL C
卷 79, 期 6, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-019-7027-6
关键词
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资金
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWFW, Austria
- FWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq, Brazil
- FAPESP, Brazil
- NSERC, Canada
- CFI, Canada
- CONICYT, Chile
- NSFC, China
- COLCIEN-CIAS, Colombia
- MSMT CR, Czech Republic
- MPO CR, Czech Republic
- VSC CR, Czech Republic
- DNRF, Denmark
- DNSRC, Denmark
- CEA-DRF/IRFU, France
- BMBF, Germany
- MPG, Germany
- GSRT, Greece
- RGC, Hong Kong SAR, China
- ISF, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- RCN, Norway
- MNiSW, Poland
- NCN, Poland
- FCT, Portugal
- MNE/IFA, Romania
- NRC KI, Russian Federation
- MESTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MIZS, Slovenia
- MINECO, Spain
- Wallenberg Foundation, Sweden
- SNSF,Geneva, Switzerland
- MOST, Taiwan
- TAEK, Turkey
- NSF, USA
- BCKDF, Canada
- CANARIE, Canada
- COST
- ERDF
- Marie Sklodowska-Curie Actions, European Union
- Investissements d' Avenir Labex, France
- ANR, France
- DFG, Germany
- AvH Foundation, Germany
- Greek NSRF, Greece
- GIF, Israel
- CERCA Programme Generalitat de Catalunya, Spain
- Royal Society, UK
- Leverhulme Trust, UK
- CERN
- CAS, China
- MOST, China
- IN2P3-CNRS, France
- SRNSFG,Georgia
- HGF, Germany
- NWO, Netherlands
- MES of Russia
- JINR
- DST/NRF, South Africa
- SRC, Sweden
- SERI,Geneva, Switzerland
- Cantons of Bern and Geneva, Switzerland
- STFC, UK
- DOE, USA
- Compute Canada, Canada
- ERC
- Horizon 2020
- Idex, France
- EU-ESF, Greece
- BSFNSF,Israel
- Science and Technology Facilities Council [ST/N000331/1] Funding Source: researchfish
- STFC [ST/N000234/1, ST/L006162/1, ST/N000307/1, ST/N000463/1, ST/S00095X/1, ST/N000331/1, ST/P002439/1, ST/S000860/1, ST/N000277/1, ST/S000747/1] Funding Source: UKRI
This paper presents measurements of W +/- Z production cross sections in pp collisions at a centre-of-mass energy of 13TeV. The data were collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider, and correspond to an integrated luminosity of 36.1fb-1. The W +/- Z candidate events are reconstructed using leptonic decay modes of the gauge bosons into electrons and muons. The measured inclusive cross section in the detector fiducial region for a single leptonic decay mode is sigma W +/- Zfid.=63.7fb, reproduced by the next-to-next-to-leading-order Standard Model prediction of 61.5-1.3+1.4fb. Cross sections for W+Z and W-Z production and their ratio are presented as well as differential cross sections for several kinematic observables. An analysis of angular distributions of leptons from decays of W and Z bosons is performed for the first time in pair-produced events in hadronic collisions, and integrated helicity fractions in the detector fiducial region are measured for the W and Z bosons separately. Of particular interest, the longitudinal helicity fraction of pair-produced vector bosons is also measured.
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