Measurement of top quark pair differential cross-sections in the dilepton channel in pp collisions at √s = 7 and 8 TeV with ATLAS

Mullier, Geoffrey; Haug, Sigve; Weber, Michael; Meloni, Federico; Cervelli, Alberto; Beck, Hans Peter; Stucci, Stefania; Ereditato, Antonio (2016). Measurement of top quark pair differential cross-sections in the dilepton channel in pp collisions at √s = 7 and 8 TeV with ATLAS. Physical review. D - particles, fields, gravitation, and cosmology, D94(9), 092003. American Physical Society 10.1103/PhysRevD.94.092003

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Measurements of normalized differential cross-sections of top quark pair (tt) production are presented as a function of the mass, the transverse momentum and the rapidity of the tt system in proton-proton collisions at center-of-mass energies of √s=7 TeV and 8 TeV. The dataset corresponds to an integrated luminosity of 4.6 fb⁻¹ at 7 TeV and 20.2 fb⁻¹ at 8 TeV, recorded with the ATLAS detector at the Large Hadron Collider. Events with top quark pair signatures are selected in the dilepton final state, requiring exactly two charged leptons and at least two jets with at least one of the jets identified as likely to contain a b-hadron. The measured distributions are corrected for detector effects and selection efficiency to cross-sections at the parton level. The differential cross-sections are compared with different Monte Carlo generators and theoretical calculations of tt production. The results are consistent with the majority of predictions in a wide kinematic range.

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:

1550-7998

Publisher:

American Physical Society

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

20 Jul 2017 09:54

Last Modified:

20 Jul 2017 09:54

Publisher DOI:

10.1103/PhysRevD.94.092003

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.99923

URI:

https://boris.unibe.ch/id/eprint/99923

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