Searching for Doubly-Charged Higgs at the LHC Sá Borges, Cieza Montalvo Mauro Tonasse Nelson Cortez Universidade do Estado do Rio de Janeiro - Instituto.

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Presentation transcript:

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

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

Left-Right Symmetric Model Broken to SM byInvariance requires Scalars

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

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

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

Pair Production Cross section General

Tevatron LHC

Experimental Bounds

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

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

Symmetry Breaking Neutral Sector Charged Sector

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

Drell-Yan Mechanism Gauge Bosons Scalars

Gluon-Gluon Fusion only scalars

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

Exotic Particles Masses E M T Parameters

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

Comparison

Left-Right Model

Comparison

Branching Ratios

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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