The processes of gluon fusion producing chargino or neutralino pairs at high energies

G. J. Gounaris (1) , Jacques Layssac (2) , Fernand Michel Renard (2)

1 Department of Physics [Thessaloniki]
2 LPTA - Laboratoire de Physique Théorique et Astroparticules

According to the helicity conservation (HCns) theorem, the sum of the helicities should be conserved, in any 2-to-2 processes in MSSM with R-parity conservation, at high energies; i.e. all amplitudes violating this rule, must vanish asymptotically. The realization of HCns in gluon-fusion to charginos or neutralinos is studied, at the one loop electroweak order (EW), and simple high energy expressions are derived for the non-vanishing helicity conserving (HC) amplitudes. These are very similar to the corresponding expressions for $gg \to W^+W^-, ZZ, \gamma Z, \gamma\gamma $ derived before. Asymptotic relations among observable unpolarized cross sections for many such processes are then obtained, some of which may hold at LHC-type energies.

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

G. J. Gounaris, Jacques Layssac, Fernand Michel Renard. The processes of gluon fusion producing chargino or neutralino pairs at high energies. 2010. ⟨hal-00544020⟩