Measurement of the double-differential high-mass Drell-Yan cross section in pp collisions at √s=8 TeV with the ATLAS detector

Mullier, Geoffrey; Haug, Sigve; Weber, Michael; Meloni, Federico; Cervelli, Alberto; Beck, Hans Peter; Stucci, Stefania; Ereditato, Antonio (2016). Measurement of the double-differential high-mass Drell-Yan cross section in pp collisions at √s=8 TeV with the ATLAS detector. Journal of High Energy Physics, 2016(8) Springer 10.1007/JHEP08(2016)009

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This paper presents a measurement of the double-differential cross section for the Drell-Yan Z/γ* → ℓ⁺ℓ⁻ and photon-induced γγ→ ℓ⁺ℓ⁻ processes where ℓ is an electron or muon. The measurement is performed for invariant masses of the lepton pairs, m ℓℓ, between 116 GeV and 1500 GeV, using a sample of 20.3 fb⁻¹ of pp collisions data at centre-of-mass energy of √s= 8 TeV collected by the ATLAS detector at the LHC in 2012. The data are presented double differentially in invariant mass and absolute dilepton rapidity as well as in invariant mass and absolute pseudorapidity separation of the lepton pair. The single-differential cross section as a function of m ℓℓ is also reported. The electron and muon channel measurements are combined and a total experimental precision of better than 1% is achieved at low mℓℓ. A comparison to next-to-next-to-leading order perturbative QCD predictions using several recent parton distribution functions and including next-to-leading order electroweak effects indicates the potential of the data to constrain parton distribution functions. In particular, a large impact of the data on the photon PDF is demonstrated.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics
500 Science > 510 Mathematics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

25 Jul 2017 17:08

Last Modified:

30 Jul 2017 02:15

Publisher DOI:

10.1007/JHEP08(2016)009

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.99934

URI:

https://boris.unibe.ch/id/eprint/99934

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