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Published byDiane Dyal Modified over 2 years ago

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Searching for Doubly-Charged Higgs at the LHC Sá Borges, Cieza Montalvo Mauro Tonasse Nelson Cortez Universidade do Estado do Rio de Janeiro - Instituto de Física Universidade Estadual Paulista – Campus de Registro Universidade Estadual Paulista – Instituto de Física Teórica

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Outline Introduction Left-Right Model Experimental Bounds 3-3-1 Model Pair Production at the LHC Partial Widths Results and Conclusion

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Left-Right Symmetric Model Broken to SM byInvariance requires Scalars

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Couplings Experimental constraints Interactions (lepton number violation ) Bhabha Scattering Muonium-antiMuonium + e+ e+ e- (g-2) small off-diagonal couplings left-handed

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One Doubly Higgs Production Physical single charged scalars (proton –proton)

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Conclusion W W fusion (H ++) Exceed Drell-Yan (H ++ H --) 2.41.75 Cross Section Proton-Proton

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Pair Production Cross section General

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Tevatron LHC

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Experimental Bounds

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SU(3) c x SU(3) L x U(1) N SM chiral extension Solve family’s replication problem Colors anomaly cancelation Seesaw mechanism Charge Operator

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Overview Left-Handed Leptons Quark Sector Scalar Sector Higgs Potential Gauge Bosons

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Symmetry Breaking Neutral Sector Charged Sector

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The Production of a Pair of Doubly Charged Higgs at LHC in the 3-3-1 Model

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Drell-Yan Mechanism Gauge Bosons Scalars

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Gluon-Gluon Fusion only scalars

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Quark loop contribution for the scalar and the quarks quark and scalar couplings

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Exotic Particles Masses E M T 190114026001300103018302200 600 Parameters 1 2 3 4 5 6 7 8 9 - 1.2 - 1. - 2.84 - 1.57 1. - 3. - 1.

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Numerical values for Total Cross Section Convolute parton momentum spectra using CTEQ5 Numerical Integration by VEGAS Quarks, gluons

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Comparison

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Left-Right Model

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Comparison

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0.0010.080.005 3.0 6.0 2.0 19.0 29.0444 Branching Ratios

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Conclusion Large number of doubly charged scalars produced by Drell-Yan mechanism Small branching ratio for ordinary quarks and leptons production Thank you Pair of Doubly Charged Higgs Production at LHC 3-3-1

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