Light-Gravitino Production at Hadron Colliders

Details Light-Gravitino Production at Hadron Colliders Light-Gravitino Production at Hadron Colliders

1997-07-11

arxiv.org/abs/hep-ph/9707331v2

Phys.Rev.D57:373-382,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, including 8 figures. Typeset in LaTex2e. Replaced with corrected figures, and some minor rewrites

Scientific paper

10.1103/PhysRevD.57.373

We consider the production of gravitinos ($\widetilde G$) in association with gluinos ($\tilde g$) or squarks ($\tilde q$) at hadron colliders, including the three main sub-processes: $q \bar q -> \tilde g\widetilde G$, $qg -> \tilde q\widetilde G$, and $gg -> \tilde g\widetilde G$. These channels become enhanced to the point of being observable for sufficiently light gravitino masses ($m_{\widetilde G} < 10^{-4} eV$), as motivated by some supersymmetric explanations of the CDF $ee\gamma\gamma+ E_{T,miss}$ event. The characteristic signal of such events would be monojets, as opposed to dijets obtained in the more traditional supersymmetric process $p \bar p -> \tilde g\tilde g$. Searches for such events at the Tevatron can impose lower limits on the gravitino mass. In the Appendix, we provide a complete set of Feynman rules for gravitino interactions used in our calculation.

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