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Measurement of the Drell-Yan triple-differential cross section in pp collisions at vs=8 TeV

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posted on 2023-06-09, 13:32 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, The ATLAS Collaboration
This paper presents a measurement of the triple-differential cross section for the Drell-Yan process Z/?* ? l+l- where l is an electron or a muon. The measurement is performed for invariant masses of the lepton pairs, m ll, between 46 and 200 GeV using a sample of 20.2 fb-1 of pp collisions data at a centre-of-mass energy of vs=8 TeV collected by the ATLAS detector at the LHC in 2012. The data are presented in bins of invariant mass, absolute dilepton rapidity, |yll|, and the angular variable cos ?* between the outgoing lepton and the incoming quark in the Collins-Soper frame. The measurements are performed in the range |yll| < 2.4 in the muon channel, and extended to |yll| < 3.6 in the electron channel. The cross sections are used to determine the Z boson forward-backward asymmetry as a function of |yll| and mll. The measurements achieve high-precision, below the percent level in the pole region, excluding the uncertainty in the integrated luminosity, and are in agreement with predictions. These precision data are sensitive to the parton distribution functions and the effective weak mixing angle.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1126-6708

Publisher

Springer Verlag

Issue

59

Volume

2017

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-05-29

First Open Access (FOA) Date

2018-05-29

First Compliant Deposit (FCD) Date

2018-05-29

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