Constraints on a General Higgs Sector from $K^0-\bar K^0$, $B_d- \bar B_d$ Mixing and the $ε$ Parameter

Details Constraints on a General Higgs Sector from $K^0-\bar K^0$, $B_d- \bar B_d$ Mixing and the $ε$ Parameter Constraints on a General Higgs Sector from $K^0-\bar K^0$, $B_d- \bar B_d$ Mixing and the $ε$ Parameter

1995-08-05

arxiv.org/abs/hep-ph/9508234v2

Mod.Phys.Lett. A11 (1996) 675-686

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX file. Four figures, not appended, can be obtained from the Authors upon request

Scientific paper

10.1142/S0217732396000692

The scalar sector of the Standard Model is extended to include an arbitrary assortment of scalars. In the case where this assignment does not preserve $\rho=1$ at the tree-level, the departure from unity itself puts the most stringent constraint on the scalar sector, and where $\rho_{tree}=1$ is maintained, useful bounds on the parameter space of the charged Higgs mass and the doublet-nondoublet mixing angle can arise from data on $\bbbar$, $\kkbar$ mixing and the $\e$ parameter. These constraints turn out to be comparable (and in some cases, better) to those obtained from $\zbb$ data.

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