Radiative corrections to sfermion mass splittings

Details Radiative corrections to sfermion mass splittings Radiative corrections to sfermion mass splittings

1996-02-12

arxiv.org/abs/hep-ph/9602279v2

Phys.Rev. D54 (1996) 1150-1154

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages (LaTeX) and 8 figures (postscript), to be published

Scientific paper

10.1103/PhysRevD.54.1150

We study the one-loop radiative corrections to the SU(2) breaking mass splittings between sfermions in SU(2) doublets in the Minimal Supersymmetric Standard Model. At tree-level, the differences of mass squared $m_{\tilde{f}_{1L}}^2-m_{\tilde{f}_{2L}}^2$ of SU(2) doublet sfermions $(\tilde{f}_1, \tilde{f}_2)_L$ in the first two generations are determined by $\tan\beta$, and are universal to sleptons and squarks. The radiative correction, however, breaks this relation. The typical deviation from the universality between sleptons and squarks is within $\pm0.05$ in terms of the ``effective $\cos2\beta$''. We also study the SUSY parameter dependence of the deviation. For very heavy sfermions, the relative corrections become large.

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