Diffraction as a CP and lineshape analyzer for MSSM Higgs bosons at the CERN LHC

John Ellis, Sik Lee Jae, Apostolos Pilaftsis

    Research output: Contribution to journalArticlepeer-review


    We study the production and decay of a coupled system of mixed neutral minimal supersymmetric extension of the Standard Model (MSSM) Higgs bosons in exclusive double-diffractive processes at the LHC, including nonvanishing CP phases in the soft supersymmetry-breaking gaugino masses and third-generation trilinear squark couplings. The three neutral Higgs bosons are naturally nearly degenerate, for large values of tanβ, when the charged Higgs boson weighs around 150 GeV. Large mixing between all three neutral Higgs bosons is possible when CP is violated, a threeway mixing scenario which we also term trimixing. A resolution in the Higgs mass of ∼1 GeV, which may be achievable using the missing-mass method, would allow one to distinguish nearly degenerate Higgs bosons by studying the production lineshape. Measurements of the polarizations of the tau leptons coming from the Higgs-boson decays could offer a direct and observable signal of CP violation in the Higgs sector. © 2005 The American Physical Society.
    Original languageEnglish
    Pages (from-to)1-8
    Number of pages7
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Issue number7
    Publication statusPublished - 1 Apr 2005


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