DOI 10.1007/s100520000256
Higher dimensional operator corrections
to the goldstino
Goldberger-Treiman vertices
Center for Theoretical Physics,
Seoul National University,
Seoul 151-742, Korea
Received: 22 December 1998 / Revised version: 1 July 1999 /
Published online: 17 February 2000 - © Springer-Verlag 2000
Abstract
The goldstino-matter interactions given by the Goldberger-Treiman
relations can
receive higher dimensional operator corrections of
O(q2/M2),
where M denotes the mass of the mediators through which SUSY
breaking
is transmitted. These corrections in the gauge mediated SUSY
breaking models
arise from loop diagrams, and an explicit calculation of such
corrections is
presented. It is emphasized that the Goldberger-Treiman vertices
are valid
only below the mediator scale, and at higher energies goldstinos
decouple
from the MSSM fields. The implication of this fact for gravitino
cosmology in
GMSB models is mentioned.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
