Simulating spin-3/2 particles at colliders
Christensen, Neil D. · de Aquino, P. · Deutschmann, N. · Duhr, C. · Fuks, B. · Garcia-Cely, C. · Mattelaer, O. · Mawatari, K. · Oexl, B. · Takaesu, Y.
Original · EN
Support for interactions of spin-3/2 particles is implemented in the FeynRules and ALOHA packages and tested with the MadGraph 5 and CalcHEP event generators in the context of three phenomenological applications. In the first, we implement a spin-3/2 Majorana gravitino field, as in local supersymmetric models, and study gravitino and gluino pair-production. In the second, a spin-3/2 Dirac top-quark excitation, inspired from compositness models, is implemented. We then investigate both top-quark excitation and top-quark pair-production. In the third, a general effective operator for a spin-3/2 Dirac quark excitation is implemented, followed by a calculation of the angular distribution of the s-channel production mechanism.
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