Measurement of W ± and Z-boson production cross sections in pp collisions at √s=13 TeV with the ATLAS detector

ATLAS, Collaboration; Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Kabana, Sonja; Meloni, Federico; Mullier, Geoffrey André Adrien; Pretzl, Klaus-Peter; Stramaglia, Maria Elena; Stucci, Stefania; Weber, Michael (2016). Measurement of W ± and Z-boson production cross sections in pp collisions at √s=13 TeV with the ATLAS detector. Physics letters. B, 759, pp. 601-621. Elsevier 10.1016/j.physletb.2016.06.023

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Measurements of the W ± →ℓ ± ν and Z→ℓ + ℓ − production cross sections (where ℓ ± =e ± ,μ ± ) in proton-proton collisions at √s=13 TeV are presented using data recorded by the ATLAS experiment at the Large Hadron Collider, corresponding to a total integrated luminosity of 81 pb −1 The total inclusive W ± -boson production cross sections times the single-lepton-flavour branching ratios are σ tot W + =11.83±0.02(stat)±0.32(sys)±0.25(lumi) nb and σ tot W − =8.79±0.02(stat)±0.24(sys)±0.18(lumi) nb for W + and W − , respectively. The total inclusive Z -boson production cross section times leptonic branching ratio, within the invariant mass window 66<m ℓℓ <116 GeV, is σ tot Z =1.981±0.007(stat)±0.038(sys)±0.042(lumi) nb. The W + , W − , and Z -boson production cross sections and cross-section ratios within a fiducial region defined by the detector acceptance are also measured. The cross-section ratios benefit from significant cancellation of experimental uncertainties, resulting in σ fid W + /σ fid W − =1.295±0.003(stat)±0.010(sys) and σ fid W ± /σ fid Z =10.31±0.04(stat)±0.20(sys) . Theoretical predictions, based on calculations accurate to next-to-next-to-leading order for quantum chromodynamics and to next-to-leading order for electroweak processes and which employ different parton distribution function sets, are compared to these measurements.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Meloni, Federico; Mullier, Geoffrey André Adrien; Pretzl, Klaus-Peter; Stramaglia, Maria Elena; Stucci, Stefania and Weber, Michael

Subjects:

500 Science > 530 Physics

ISSN:

0370-2693

Publisher:

Elsevier

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

08 Sep 2016 13:52

Last Modified:

08 Aug 2017 13:30

Publisher DOI:

10.1016/j.physletb.2016.06.023

ArXiv ID:

1603.09222

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.87594

URI:

https://boris.unibe.ch/id/eprint/87594

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