Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-06-29
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 4 figures
Scientific paper
We consider gravitino couplings in theories with broken gauge symmetries. In particular, we compute the single gravitino production cross section in W+ W- fusion processes. 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.
Luo Feng
Olive Keith A.
Peloso Marco
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