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arXiv · 1308.1668

Simulating spin-3/2 particles at colliders

Neil D. Christensen·P. de Aquino·N. Deutschmann·C. Duhr·B. Fuks·C. Garcia-Cely·O. Mattelaer·K. Mawatari·B. Oexl·Y. Takaesu
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Abstract

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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Neil D. Christensen, P. de Aquino, N. Deutschmann, C. Duhr, B. Fuks, C. Garcia-Cely, O. Mattelaer, K. Mawatari, B. Oexl, Y. Takaesu. 2013-08-07. Simulating spin-3/2 particles at colliders. https://doi.org/10.1140/epjc/s10052-013-2580-x

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