Search for new physics in top quark production in dilepton final states in proton-proton collisions at √s=13TeV

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

Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/19683

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

Files in This Item:

File	Description	Size	Format
FullText.pdf		1.59 MB	Adobe PDF	View/Open

Show full item record