A new class of SUSY signatures in the processes $gg \to HH', ~VH$

Details A new class of SUSY signatures in the processes $gg \to HH', ~VH$ A new class of SUSY signatures in the processes $gg \to HH', ~VH$

2009-03-26

arxiv.org/abs/0903.4532v3

Phys.Rev.D80:013009,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version to appear in Phys. Rev. D. More references have been added

Scientific paper

10.1103/PhysRevD.80.013009

Within the MSSM and SM frameworks, we analyze the 1loop electroweak (EW) predictions for the helicity amplitudes describing the 17 processes $gg\to HH'$, and the 9 processes $gg\to VH$; where $H,H'$ denote Higgs or Goldstone bosons, while $V= Z, ~W^\pm$. Concentrating on MSSM, we then investigate how the asymptotic helicity conservation (HCns) property of SUSY, affects the amplitudes at the LHC energy range; and what is the corresponding situation in SM, where no HCns theorem exists. HCns is subsequently used to construct many relations among the cross sections of the above MSSM processes, depending only on the angles $\alpha$ and $\beta$. These relations should be asymptotically exact, but with mass-depending deviations appearing, as the energy decreases towards the LHC range. Provided the SUSY scale is not too high, they may remain roughly correct, even at the LHC energy range.

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