Simulating spin-$\frac{3}{2}$ particles at colliders.

Autor: Christensen, N. D., de Aquino, P., Deutschmann, N., Duhr, C., Fuks, B., Garcia-Cely, C., Mattelaer, O., Mawatari, K., Oexl, B., Takaesu, Y.
Předmět:
Zdroj: European Physical Journal C -- Particles & Fields; Oct2013, Vol. 73 Issue 10, p1-23, 23p
Abstrakt: Support for interactions of spin- $\frac{3}{2}$ 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- $\frac{3}{2}$ Majorana gravitino field, as in local supersymmetric models, and study gravitino and gluino pair-production. In the second, a spin- $\frac{3}{2}$ Dirac top-quark excitation, inspired from compositeness 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- $\frac{3}{2}$ Dirac quark excitation is implemented, followed by a calculation of the angular distribution of the s-channel production mechanism. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index