We consider gravitino couplings in theories with broken gauge symmetries. In particular, we compute the single gravitino production cross section in the W+W− fusion process. Despite recent claims to the contrary, we show that this process is always subdominant to gluon fusion processes in the high energy limit. The full calculation is performed numerically; however, we give analytic expressions for the cross section in the supersymmetric and electroweak limits. We also confirm these results with the use of the effective theory of goldstino interactions.
The gravitino coupling to broken gauge theories applied to the MSSM
Peloso M.
2010
Abstract
We consider gravitino couplings in theories with broken gauge symmetries. In particular, we compute the single gravitino production cross section in the W+W− fusion process. Despite recent claims to the contrary, we show that this process is always subdominant to gluon fusion processes in the high energy limit. The full calculation is performed numerically; however, we give analytic expressions for the cross section in the supersymmetric and electroweak limits. We also confirm these results with the use of the effective theory of goldstino interactions.File in questo prodotto:
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