223 citations · 540 across the 10 of their papers we have counts for
4 papers · 1 filter
Testing SUSY
S. Cassel, D. M. Ghilencea, G. G. Ross
If SUSY provides a solution to the hierarchy problem then supersymmetric states should not be too heavy. This requirement is quantified by a fine tuning measure that provides a qua…
Sommerfeld factor for arbitrary partial wave processes
S. Cassel
The Sommerfeld factor for arbitrary partial wave processes is derived in the non-relativistic limit. The s-wave and p-wave numerical results are presented for the case of Yukawa in…
Electroweak and Dark Matter Constraints on a Z' in Models with a Hidden Valley
S. Cassel, D. M. Ghilencea, G. G. Ross
We consider current precision electroweak data, Z' searches and dark matter constraints and analyse their implications for an extension of the SM that includes an extra U(1)' massi…
Fine tuning as an indication of physics beyond the MSSM
S. Cassel, D. M. Ghilencea, G. G. Ross
We investigate the amount of fine tuning of the electroweak scale in the presence of new physics beyond the MSSM, parametrized by higher dimensional operators. We show that these s…