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Title: Measurement of the mass difference between top quark and antiquark in pp collisions at s=8 TeV
Authors: Chatrchyan, S
Khachatryan, V
Sirunyan, AM
Tumasyan, A
Adam, W
Bergauer, T
Dragicevic, M
Erö, J
Fabjan, C
Friedl, M
Frühwirth, R
Ghete, VM
Hartl, C
Hörmann, N
Hrubec, J
Jeitler, M
Kiesenhofer, W
Knünz, V
Krammer, M
Krätschmer, I
Liko, D
Mikulec, I
Rabady, D
Rahbaran, B
Rohringer, H
Schöfbeck, R
Strauss, J
Taurok, A
Treberer-Treberspurg, W
Waltenberger, W
Wulz, CE
Mossolov, V
Shumeiko, N
Suarez Gonzalez, J
Alderweireldt, S
Bansal, M
Bansal, S
Cornelis, T
De Wolf, EA
Janssen, X
Knutsson, A
Luyckx, S
Mucibello, L
Ochesanu, S
Roland, B
Rougny, R
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Van Spilbeeck, A
Blekman, F
Blyweert, S
D'Hondt, J
Heracleous, N
Kalogeropoulos, A
Keaveney, J
Kim, TJ
Lowette, S
Maes, M
Olbrechts, A
Strom, D
Tavernier, S
Van Doninck, W
Van Mulders, P
Van Onsem, GP
Villella, I
Caillol, C
Clerbaux, B
De Lentdecker, G
Favart, L
Gay, APR
Hreus, T
Léonard, A
Marage, PE
Mohammadi, A
Perniè, L
Reis, T
Seva, T
Thomas, L
Vander Velde, C
Vanlaer, P
Wang, J
Adler, V
Beernaert, K
Benucci, L
Cimmino, A
Costantini, S
Dildick, S
Garcia, G
Klein, B
Lellouch, J
Mccartin, J
Ocampo Rios, AA
Ryckbosch, D
Sigamani, M
Strobbe, N
Thyssen, F
Tytgat, M
Issue Date: 2017
Citation: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2017, 770 pp. 50 - 71
Abstract: © 2017 The Author(s)The invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark (Δmt=mt−mt‾) that are produced in pp collisions at a center-of-mass energy of 8 TeV, using events with a muon or an electron and at least four jets in the final state. The analysis is based on data corresponding to an integrated luminosity of 19.6 fb−1collected by the CMS experiment at the LHC, and yields a value of Δmt=−0.15±0.19(stat)±0.09(syst) GeV, which is consistent with the SM expectation. This result is significantly more precise than previously reported measurements.
ISSN: 0370-2693
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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