Multilepton signals of gauge mediated supersymmetry breaking at the LHC
Artikel i vetenskaplig tidskrift, 2014
We investigate multilepton LHC signals arising from electroweak processes involving sleptons. We consider the framework of general gauge mediated supersymmetry breaking, focusing on models where the low mass region of the superpartner spectrum consists of the three generations of charged sleptons and the nearly massless gravitino. We demonstrate how such models can provide an explanation for the anomalous four lepton events recently observed by the CMS Collaboration, while satisfying other existing experimental constraints. The best fit to the CMS data is obtained for a selectron/smuon mass of around 145 GeV and a stau mass of around 90 GeV. These models also give rise to final states with more than four leptons, offering alternative channels in which they can be probed and we estimate the corresponding production rates at the LHC. (c) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
BOSON
PHYSICS
SLEPTON-PAIR PRODUCTION
SEARCH
MASS
Gauge mediation
STANDARD MODEL
HADRON COLLIDERS
RESUMMATION
Supersymmetry breaking
PARTICLE
Författare
J. D'Hondt
Vrije Universiteit Brüssel (VUB)
International Solvay Institute for Physics and Chemistry
K. De Causmaecker
Vrije Universiteit Brüssel (VUB)
CERN
International Solvay Institute for Physics and Chemistry
B. Fuks
CERN
Université de Strasbourg
A. Mariotti
Durham University
K. Mawatari
International Solvay Institute for Physics and Chemistry
Vrije Universiteit Brüssel (VUB)
Christoffer Petersson
Chalmers, Fysik, Subatomär fysik och plasmafysik
D. Redigolo
Solvay Institutes
Université de Strasbourg
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
0370-2693 (ISSN)
Vol. 731 7-12Ämneskategorier (SSIF 2011)
Fysik
DOI
10.1016/j.physletb.2014.02.016