$\tanβ$ Determination From Heavy Higgs Boson Production at Linear Colliders

Details $\tanβ$ Determination From Heavy Higgs Boson Production at Linear Colliders $\tanβ$ Determination From Heavy Higgs Boson Production at Linear Colliders

2000-06-19

arxiv.org/abs/hep-ph/0006223v1

Phys.Rev.D63:075002,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 11 ps figures, 1 eps figure, 2 tables

Scientific paper

10.1103/PhysRevD.63.075002

We study the production at future $e^+e^-$ linear colliders of the heavy neutral Higgs bosons $H$ and $A$ of the minimal supersymmetric standard model in association with top and bottom quarks. The cross sections have a strong dependence on the parameter $\tan\beta$, and thus provide a good way to determine it. At a linear collider with $\sqrt s = 0.5-1$ TeV and expected integrated luminosities, we find significant sensitivities for determining $\tan\beta$. In the Supergravity scenario, the sensitivity is particularly strong for $\tan\beta > 10$, reaching a 15% or better measurement. In the general MSSM scenario, the interplay between the $4b$ and $4t$ channels results in a good determination for $\tan\beta < 10$, while the sensitivity is weakened for higher values of $\tan\beta$.

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