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Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets

journal contribution
posted on 2024-03-26, 03:43 authored by V Khachatryan, AM Sirunyan, A Tumasyan, W Adam, T Bergauer, M Dragicevic, J Erö, M Friedl, R Frühwirth, VM Ghete, C Hartl, N Hörmann, J Hrubec, M Jeitler, W Kiesenhofer, V Knünz, M Krammer, I Krätschmer, D Liko, I Mikulec, D Rabady, B Rahbaran, H Rohringer, R Schöfbeck, J Strauss, W Treberer-Treberspurg, W Waltenberger, CE Wulz, V Mossolov, N Shumeiko, J Suarez Gonzalez, S Alderweireldt, M Bansal, S Bansal, T Cornelis, EA De Wolf, X Janssen, A Knutsson, J Lauwers, S Luyckx, S Ochesanu, R Rougny, M Van De Klundert, H Van Haevermaet, P Van Mechelen, N Van Remortel, A Van Spilbeeck, F Blekman, S Blyweert, J D'Hondt, N Daci, N Heracleous, J Keaveney, S Lowette, M Maes, A Olbrechts, Q Python, D Strom, S Tavernier, W Van Doninck, P Van Mulders, GP Van Onsem, I Villella, C Caillol, B Clerbaux, G De Lentdecker, D Dobur, L Favart, APR Gay, A Grebenyuk, A Léonard, A Mohammadi, L Perniè, T Reis, T Seva, L Thomas, C Vander Velde, P Vanlaer, J Wang, F Zenoni, V Adler, K Beernaert, L Benucci, A Cimmino, S Costantini, S Crucy, S Dildick, A Fagot, G Garcia, J McCartin, AA Ocampo Rios, D Ryckbosch, S Salva Diblen, M Sigamani, N Strobbe, F Thyssen, M Tytgat, E Yazgan, N Zaganidis, S Basegmez
A study of vector boson scattering in pp collisions at a center-of-mass energy of 8 TeV is presented. The data sample corresponds to an integrated luminosity of 19.4fb-1 collected with the CMS detector. Candidate events are selected with exactly two leptons of the same charge, two jets with large rapidity separation and high dijet mass, and moderate missing transverse energy. The signal region is expected to be dominated by electroweak same-sign W-boson pair production. The observation agrees with the standard model prediction. The observed significance is 2.0 standard deviations, where a significance of 3.1 standard deviations is expected based on the standard model. Cross section measurements for W±W± and WZ processes in the fiducial region are reported. Bounds on the structure of quartic vector-boson interactions are given in the framework of dimension-eight effective field theory operators, as well as limits on the production of doubly charged Higgs bosons.

History

Journal

Physical Review Letters

Volume

114

Article number

ARTN 051801

Location

United States

ISSN

0031-9007

eISSN

1079-7114

Language

English

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

5

Publisher

AMER PHYSICAL SOC

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