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

Abstract

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 and 8 TeV. The data set 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.

Metadata

Item Type:	Article
Authors/Creators:	Aaboud, M Aad, G Abbott, B Abdallah, J Abdinov, O Abeloos, B Aben, R Abouzeid, OS Abraham, NL Abramowicz, H Abreu, H Abreu, R Abulaiti, Y Acharya, BS Adamczyk, L Adams, DL Adelman, J Adomeit, S Adye, T Affolder, AA Agatonovic-Jovin, T Agricola, J Aguilar-Saavedra, JA Ahlen, SP Ahmadov, F Aielli, G Akerstedt, H Åkesson, TPA Akimov, AV Alberghi, GL Albert, J Albrand, S Alconada Verzini, MJ Aleksa, M Aleksandrov, IN Alexa, C Alexander, G Alexopoulos, T Alhroob, M Ali, B Aliev, M Alimonti, G Alison, J Alkire, SP Allbrooke, BMM Allen, BW Allport, PP Aloisio, A Alonso, A Alonso, F Alpigiani, C Alstaty, M Alvarez Gonzalez, B Álvarez Piqueras, D Alviggi, MG Amadio, BT Amako, K Amaral Coutinho, Y Amelung, C Amidei, D Amor Dos Santos, SP Amorim, A Amoroso, S Amundsen, G Anastopoulos, C Ancu, LS Andari, N Andeen, T Anders, CF Anders, G Anders, JK Anderson, KJ Andreazza, A Andrei, V Angelidakis, S Angelozzi, I Anger, P Angerami, A Anghinolfi, F Anisenkov, AV Anjos, N Annovi, A
Copyright, Publisher and Additional Information:	© 2016 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License (https://creativecommons.org/licenses/by/3.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Dates:	Published: 11 November 2016 Published (online): 11 November 2016
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	07 Dec 2016 15:05
Last Modified:	07 Dec 2016 15:05
Published Version:	http://doi.org/10.1103/PhysRevD.94.092003
Status:	Published
Publisher:	American Physical Society
Refereed:	Yes
Identification Number:	10.1103/PhysRevD.94.092003
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:109119

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

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