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Type: Journal article
Title: Same-sign tetra-leptons from type II seesaw
Author: Chun, E.
Sharma, P.
Citation: The Journal of High Energy Physics, 2012; 2012(8):162-1-162-15
Publisher: Springer
Issue Date: 2012
ISSN: 1126-6708
Statement of
Eung Jin Chun, Pankaj Sharma
Abstract: The type II seesaw mechanism introduces a hypercharged Higgs triplet to explain the observed neutrino masses and mixing. Among three triplet components, the doubly charged Higgs boson can be the lightest and decay mainly to same-sign di-leptons. Furthermore, the heavier singly charged or neutral Higgs boson produces a doubly charged Higgs boson through its fast gauge decay. This leads to a novel signature of same-sign tetra-leptons resulting from a pair production of same-sign doubly charged Higgs bosons caused by the nearly degenerate neutral scalar mixing which can be sizable for an appropriate choice of the model parameters. After studying production cross-sections for the same-sign tetra-lepton signal in the parameter space of the mass splitting among triplet components and the triplet vacuum expectation value, we provide a LHC analysis of the same-sign tetra-lepton signal for a benchmark point chosen to maximize the event number.
Keywords: Higgs Physics
Beyond Standard Model
Neutrino Physics
Rights: © SISSA 2012
DOI: 10.1007/JHEP08(2012)162
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