Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/12631
Title: Inclusive and differential measurements of the tt charge asymmetry in pp collisions at √s=8 TeV
Authors: Khachatryan, V
Sirunyan, AM
Tumasyan, A
Adam, W
Asilar, E
Bergauer, T
Brandstetter, J
Brondolin, E
Dragicevic, M
Erö, J
Flechl, M
Friedl, M
Frühwirth, R
Ghete, VM
Hartl, C
Hörmann, N
Hrubec, J
Jeitler, M
Knünz, V
König, A
Krammer, M
Krätschmer, I
Liko, D
Matsushita, T
Mikulec, I
Rabady, D
Rahbaran, B
Rohringer, H
Schieck, J
Schöfbeck, R
Strauss, J
Treberer-Treberspurg, W
Waltenberger, W
Wulz, CE
Mossolov, V
Shumeiko, N
Suarez Gonzalez, J
Alderweireldt, S
Cornelis, T
De Wolf, EA
Janssen, X
Knutsson, A
Lauwers, J
Luyckx, S
Ochesanu, S
Rougny, R
Van De Klundert, M
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Van Spilbeeck, A
Abu Zeid, S
Blekman, F
D'Hondt, J
Daci, N
De Bruyn, I
Deroover, K
Heracleous, N
Keaveney, J
Lowette, S
Moreels, L
Olbrechts, A
Python, Q
Strom, D
Tavernier, S
Van Doninck, W
Van Mulders, P
Van Onsem, GP
Van Parijs, I
Barria, P
Caillol, C
Clerbaux, B
De Lentdecker, G
Delannoy, H
Fasanella, G
Favart, L
Gay, APR
Grebenyuk, A
Lenzi, T
Léonard, A
Maerschalk, T
Marinov, A
Perniè, L
Randle-conde, A
Reis, T
Seva, T
Vander Velde, C
Vanlaer, P
Yonamine, R
Zenoni, F
Zhang, F
Beernaert, K
Benucci, L
Keywords: CMS;Physics;Top quark;Charge asymmetry
Issue Date: 2016
Publisher: Elsevier
Citation: Physics Letters Section B, 757: pp. 154 - 179, (2016)
Abstract: The tt- charge asymmetry is measured in proton-proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb-1. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010±0.0068 (stat)±0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the tt- system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of -0.0035±0.0072 (stat)±0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model.
URI: http://www.sciencedirect.com/science/article/pii/S0370269316300314
http://bura.brunel.ac.uk/handle/2438/12631
DOI: http://dx.doi.org/10.1016/j.physletb.2016.03.060
ISSN: 0370-2693
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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