Muon g2, Dark Matter and the Higgs mass in NoScale Supergravity
Abstract
We discuss the phenomenology of noscale supergravity (SUGRA), in which the universal scalar mass is zero at the high scale, focussing on the recently updated muon g2 measurement, and including dark matter and the correct Higgs boson mass. Such noscale supergravity scenarios arise naturally from string theory and are also inspired by the successful Starobinsky inflation, with a class of minimal models leading to a strict upper bound on the gravitino mass m3/2 < 103 TeV. We perform a Monte Carlo scan over the allowed parameter space, assuming a mixture of pure gravity mediated and universal gaugino masses, using the SPheno package linked to FeynHiggs, MicrOmegas and CheckMate, displaying the results in terms of a Likelihood function. We present results for zero and nonzero trilinear soft parameters, and for different signs of gaugino masses, giving a representative set of benchmark points for each viable region of parameter space. We find that, while noscale SUGRA can readily satisfy the dark matter and Higgs boson mass requirements, consistent with all other phenomenological constraints, the muon g 2 measurement may be accommodated only in certain regions of parameter space, close to the LHC excluded regions for light sleptons and charginos.
 Publication:

arXiv eprints
 Pub Date:
 September 2021
 arXiv:
 arXiv:2109.10802
 Bibcode:
 2021arXiv210910802F
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 46 pages 18 figures 16 tables