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Title: | Search for new physics in top quark production in dilepton final states in proton-proton collisions at √s=13TeV |
Authors: | Sirunyan, AM Tumasyan, A Adam, W Ambrogi, F Asilar, E Bergauer, T Brandstetter, J Dragicevic, M Erö, J Del Valle, AE Flechl, M Frühwirth, R Ghete, VM Hrubec, J Jeitler, M Krammer, N Krätschmer, I Liko, D Madlener, T Mikulec, I Rad, N Rohringer, H Schieck, J Schöfbeck, R Spanring, M Spitzbart, D Waltenberger, W Wittmann, J Wulz, CE Zarucki, M Chekhovsky, V Mossolov, V Gonzalez, JS De Wolf, EA Di Croce, D Janssen, X Lauwers, J Lelek, A Pieters, M Van Haevermaet, H Van Mechelen, P Van Remortel, N Zeid, SA Blekman, F D’Hondt, J De Clercq, J Deroover, K Flouris, G Lontkovskyi, D Lowette, S Marchesini, I Moortgat, S Moreels, L Python, Q Skovpen, K Tavernier, S Van Doninck, W Van Mulders, P Van Parijs, I Beghin, D Bilin, B Brun, H Clerbaux, B De Lentdecker, G Delannoy, H Dorney, B Fasanella, G Favart, L Grebenyuk, A Kalsi, AK Lenzi, T Luetic, J Postiau, N Starling, E Thomas, L Velde, CV Vanlaer, P Vannerom, D Wang, Q Cornelis, T Dobur, D Fagot, A Gul, M Khvastunov, I Poyraz, D Roskas, C Trocino, D Tytgat, M Verbeke, W Vermassen, B Vit, M Zaganidis, N Bakhshiansohi, H Bondu, O Bruno, G Caputo, C David, P Delaere, C Delcourt, M Giammanco, A |
Issue Date: | 2019 |
Publisher: | Springer |
Citation: | European Physical Journal C, 2019, 79 (11) |
Abstract: | A search for new physics in top quark production is performed in proton-proton collisions at 13TeV. The data set corresponds to an integrated luminosity of 35.9fb-1 collected in 2016 with the CMS detector. Events with two opposite-sign isolated leptons (electrons or muons), and b quark jets in the final state are selected. The search is sensitive to new physics in top quark pair production and in single top quark production in association with a W boson. No significant deviation from the standard model expectation is observed. Results are interpreted in the framework of effective field theory and constraints on the relevant effective couplings are set, one at a time, using a dedicated multivariate analysis. This analysis differs from previous searches for new physics in the top quark sector by explicitly separating t W from t t ¯ events and exploiting the specific sensitivity of the t W process to new physics. |
URI: | http://bura.brunel.ac.uk/handle/2438/19683 |
DOI: | http://dx.doi.org/10.1140/epjc/s10052-019-7387-y |
ISSN: | 1434-6052 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
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