Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-02-28
Phys.Rev.D71:075007,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 5 EPS figures, a reference added, to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.71.075007
We study the production and decay of a coupled system of mixed neutral MSSM Higgs bosons in exclusive double-diffractive processes at the LHC, including non-vanishing 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 \tan\beta, when the charged Higgs boson weighs around 150 GeV. Large mixing between all three neutral Higgs bosons is possible when CP is violated, a three-way mixing scenario which we also term tri-mixing. A resolution in the Higgs mass of \sim 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.
Ellis John
Lee Jae Sik
Pilaftsis Apostolos
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