4 papers
Chasing higgsino dark matter at colliders in the neutrino fog era
Prudhvi N. Bhattiprolu, Stephen P. Martin, James D. Wells
Higgsinos can be the lightest supersymmetric particles, allowing for either a full or partial dark matter interpretation, with the correct thermal freeze-out abundance obtained for…
Three-loop corrections to the Fermi decay constant in the scheme
Stephen P. Martin
I present the leading 3-loop contributions to the Fermi decay constant in the Standard Model, using the tadpole-free pure scheme. The calculation is exact in t…
The curtain lowers on directly detectable higgsino dark matter
Stephen P. Martin
A higgsino could be some or all of the dark matter, with a mass bounded from above by about 1.1 TeV assuming a thermal freezeout density, and from below by collider searches. Direc…
Effective Kähler and auxiliary field potentials for chiral superfield models at three loops
Stephen P. Martin
I obtain the effective Kähler potential at three-loop order for a general renormalizable supersymmetric theory containing only chiral supermultiplets. The three-loop contribution…