We compute the next-to-leading order corrections to the gaugino masses M-i in gauge-mediated models for generic values of the messenger masses M and discuss the predictions of unified messenger models. If M < 100 TeV there can be corrections of up to 10% to the leading order relations M-i proportional to alpha(i). If the messengers are heavier there are only correctionas of a few %, We also study the messenger corrections to gauge coupling unification: as a result of cancellations dictated by supersymmetry, the predicted value of the strong coupling constant is typically only negligibly increased. (C) 1998 Elsevier Science B.V.
|Autori:||Picariello M; Strumia A|
|Titolo:||Next-to-leading order corrections to gauge-mediated gaugino masses|
|Anno del prodotto:||1998|
|Digital Object Identifier (DOI):||10.1016/S0550-3213(98)00383-6|
|Appare nelle tipologie:||1.1 Articolo in rivista|