Search for new physics in same-sign dilepton events in proton–proton collisions at √s = 13 TeV

Open access
Author
CMS Collaboration
Khachatryan, Vardan
Bachmair, Felix
Bäni, Lukas
Bianchini, Lorenzo
Casal, Bruno
Dissertori, Günther
Dittmar, Michael
Donegà, Mauro
Eller, Philipp
Grab, Christoph
Heidegger, Constantin
Hits, Dmitry
Hoss, Jan
Kasieczka, Gregor
Lecomte, Pierre
Lustermann, Werner
Mangano, Boris
Marionneau, Matthieu
Martinez Ruiz del Arbol, Pablo
Masciovecchio, Mario
Meinhard, Maren T.
Meister, Daniel
Micheli, Francesco
Musella, Pasquale
Nessi-Tedaldi, Francesca
Pandolfi, Francesco
Pauss, Felicitas
Perrin, Gaël
Perrozzi, Luca
Quittnat, Milena
Rossini, Marco
Schönenberger, Myriam
Starodumov, Andrey
Takahashi, Maiko
Tavolaro, Vittorio R.
Theofilatos, Konstantinos
Wallny, Rainer
et al.
Date
2016-08Type
- Journal Article
Abstract
A search for new physics is performed using events with two isolated same-sign leptons, two or more jets, and missing transverse momentum. The results are based on a sample of proton–proton collisions at a center-of-mass energy of 13TeV recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of 2.3 fb1. Multiple search regions are defined by classifying events in terms of missing transverse momentum, the scalar sum of jet transverse momenta, the transverse mass associated with a W boson candidate, the number of jets, the number of b quark jets, and the transverse momenta of the leptons in the event. The analysis is sensitive to a wide variety of possible signals beyond the standard model. No excess above the standard model background expectation is observed. Constraints are set on various supersymmetric models, with gluinos and bottom squarks excluded for masses up to 1300 and 680GeV, respectively, at the 95 % confidence level. Upper limits on the cross sections for the production of two top quark-antiquark pairs (119fb) and two same-sign top quarks (1.7pb) are also obtained. Selection efficiencies and model independent limits are provided to allow further interpretations of the results Show more
Permanent link
https://doi.org/10.3929/ethz-b-000119540Publication status
publishedJournal / series
The European Physical Journal CVolume
Pages / Article No.
Publisher
SpringerOrganisational unit
03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
08803 - Grab, Christoph (Tit.Prof.)
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