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- W2808625879 abstract "We present an analysis on the production of two same-sign lepton pairs at the LHC, mediated by bileptons in the $SU(3)_ctimes SU(3)_Ltimes U(1)_X$ theory, the so-called 331 model. Compared to other 331 scenarios, in this model the embedding of the hypercharge is obtained with the addition of 3 exotic quarks and doubly-charged vector gauge bosons with lepton numbers $pm 2$ in the spectrum ($Y^{pmpm}$), which can mediate the production of four-lepton final states. Furthermore, a complete description of the model requires the introduction of a Higgs scalar sector, which is a sextet of $SU(3)_L$, necessary in order to correctly account for the lepton masses. As a result of this, new doubly-charged scalar states $H^{pmpm}$ are part of the spectrum as well and can in principle compete with the vector bileptons in giving rise to four-lepton final states. We investigate both channels and study several observables at the LHC, for both signal and Standard Model $ZZ$ background. With respect to previous work on vector- and scalar-bilepton production, we use the most updated exclusion limits at the LHC and implement the 331 model in a full Monte Carlo simulation code, capable of being interfaced with any analysis framework. Our result is that the 331 signal can be discriminated from the background with a significance of 6-9 standard deviations, depending on the LHC luminosity, with the vector bileptons dominating over the scalar ones." @default.
- W2808625879 created "2018-06-21" @default.
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- W2808625879 date "2018-10-01" @default.
- W2808625879 modified "2023-09-27" @default.
- W2808625879 title "Exploring scalar and vector bileptons at the LHC in a 331 model" @default.
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- W2808625879 doi "https://doi.org/10.1016/j.physletb.2018.08.015" @default.
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