The complete radiative corrections to the gaugino and Higgsino masses in the Minimal Supersymmetric Model

Details The complete radiative corrections to the gaugino and Higgsino masses in the Minimal Supersymmetric Model The complete radiative corrections to the gaugino and Higgsino masses in the Minimal Supersymmetric Model

1994-03-07

arxiv.org/abs/hep-ph/9403240v1

Nucl.Phys. B430 (1994) 278-294

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, JHU-TIPAC-940001, PURD-TH-94-04. 6 uuencoded postscript figures included. Uncomment the line "%\input epsf" to embed

Scientific paper

10.1016/0550-3213(94)00303-3

We determine the radiative corrections to the masses of the gauginos and Higgsinos in the MSSM, including all sectors of the theory in a one-loop calculation in the on-mass-shell renormalization scheme. We find that a gluino which is massless at tree level receives a mass of between 0 and 3 GeV, primarily due to the top/stop contribution. This radiatively generated mass depends directly on the off-diagonal element of the squark mass matrix. In the case of a massive gluino, its mass receives typically large corrections, as large as 40\% for a 125 GeV gluino. We find that the contributions to the neutralino and chargino mass corrections from the gauge/Higgs/gaugino/Higgsino sector are typically +-1%. The lightest neutralino, which can receive corrections larger than 25%, receives 5% corrections over most of the parameter space. We combine our results with the results of LEP and CDF searches to obtain the lower bounds on the neutralino and chargino masses at one-loop. We also demonstrate how the radiative corrections affect the presently excluded region of parameter space.

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