Radiative Corrections to Neutralino and Chargino Masses in the Minimal Supersymmetric Model

Details Radiative Corrections to Neutralino and Chargino Masses in the Minimal Supersymmetric Model Radiative Corrections to Neutralino and Chargino Masses in the Minimal Supersymmetric Model

1993-12-08

arxiv.org/abs/hep-ph/9312248v2

Phys.Rev.D50:565-570,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, JHU-TIPAC-930030, PURD-TH-93-13, uses epsf.sty, 6 uuencoded postscript figures, added one sentence and a reference

Scientific paper

10.1103/PhysRevD.50.565

We determine the neutralino and chargino masses in the MSSM at one-loop. We perform a Feynman diagram calculation in the on-shell renormalization scheme, including quark/squark and lepton/slepton loops. We find generically the corrections are of order 6%. For a 20 GeV neutralino the corrections can be larger than 20%. The corrections change the region of $\mu,\ M_2,\ \tan\beta$ parameter space which is ruled out by LEP data. We demonstrate that, e.g., for a given $\mu$ and $\tan\beta$ the lower limit on the parameter $M_2$ can shift by 20 GeV.

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