12 citations · 12 across the 3 of their papers we have counts for
3 papers
hep-ph2004★ 12 cited
Sleptons: Masses, Mixings, Couplings
A. Freitas, H. -U. Martyn, U. Nauenberg +1
This presentation summarizes recent work of different groups on the analysis of slepton parameters at a TeV linear collider. In particular, measurements of the masses, mixings and…
hep-ph2004
Two-loop helicity amplitudes for fermion-fermion scattering
A. De Freitas, Z. Bern
We discuss the calculation of two-loop helicity amplitudes for quark-quark scattering in QCD and four-gluino scattering in N=1 supersymmetric Yang-Mills theory. We study the depend…
hep-ph2004
How to study weakly coupled neutral vector bosons
A. Freitas
A weakly coupled new neutral gauge boson, forming a narrow resonance, can be efficiently produced at e+e- colliders through radiative return processes if the collider energy is lar…