Diminishing "charginos nearly degenerate with the lightest neutralino" slit using precision data

Details Diminishing "charginos nearly degenerate with the lightest neutralino" slit using precision data Diminishing "charginos nearly degenerate with the lightest neutralino" slit using precision data

1999-07-03

arxiv.org/abs/hep-ph/9907219v2

Phys.Lett.B463:230-233,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, latex, 2 figures included; published on PLB. Bounds on chargino mass are improved; two references are added

Scientific paper

10.1016/S0370-2693(99)00976-4

Though LEP II direct searches still cannot exclude a chargino nearly
degenerate with the lightest neutralino if their mass is only slightly above
half of the Z boson mass, it can be excluded indirectly analyzing precision
data. In this particular limit simple analytical formulas for oblique
electroweak radiative corrections are presented.

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