1-loop Corrections to the ρParameter in the Left-Right Twin Higgs Model

Details 1-loop Corrections to the ρParameter in the Left-Right Twin Higgs Model 1-loop Corrections to the ρParameter in the Left-Right Twin Higgs Model

2007-10-13

arxiv.org/abs/0710.2589v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Submitted for the SUSY07 proceedings, 4 pages, 3 eps figures

Scientific paper

We implement a one-loop analysis of the $\rho$ parameter in the Left Right Twin Higgs model, including the logarithmically enhanced contributions from both fermion and scalar loops. Numerical results show that the one-loop contributions are dominant over the tree level corrections in most regions of parameter space. The experimentally allowed values of $\rho$-parameter divide the allowed parameter space into two regions; less than $670 {\rm GeV}$ and larger than $1100 {\rm GeV}$ roughly, for symmetry breaking scale $f$. Our numerical analysis significantly reduces the parameter space which are favorably accessible to the LHC.

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