Uncertainties in the lightest CP even Higgs boson mass prediction in the minimal supersymmetric standard model: fixed order versus effective field theory prediction
Publication Date
2018-07-12Journal Title
European Physical Journal C
ISSN
1434-6044
Publisher
Springer Science and Business Media LLC
Volume
78
Issue
7
Type
Article
Metadata
Show full item recordCitation
Allanach, B., & Voigt, A. (2018). Uncertainties in the lightest CP even Higgs boson mass prediction in the minimal supersymmetric standard model: fixed order versus effective field theory prediction. European Physical Journal C, 78 (7) https://doi.org/10.1140/epjc/s10052-018-6046-z
Abstract
We quantify and examine the uncertainties in predictions of the lightest $CP$
even Higgs boson pole mass $M_h$ in the Minimal Supersymmetric Standard Model
(MSSM), utilising current spectrum generators and including some three-loop
corrections. There are two broadly different approximations being used:
effective field theory (EFT) where an effective Standard Model (SM) is used
below a supersymmetric mass scale, and a fixed order calculation, where the
MSSM is matched to QCD$\times$QED at the electroweak scale. The uncertainties
on the $M_h$ prediction in each approach are broken down into logarithmic and
finite pieces. The inferred values of the stop mass parameters are sensitively
dependent upon the precision of the prediction for $M_h$. The fixed order
calculation appears to be more accurate below a supersymmetry (SUSY) mass scale
of $M_S \approx 1.2$ TeV, whereas above this scale, the EFT calculation is more
accurate. We also revisit the range of the lightest stop mass across fine-tuned
parameter space that has an appropriate stable vacuum and is compatible with
the lightest $CP$ even Higgs boson $h$ being identified with the one discovered
at the ATLAS and CMS experiments in 2012; we achieve a maximum value of $\sim
10^{11}$ GeV.
Sponsorship
Science and Technology Facilities Council (ST/P000681/1)
Embargo Lift Date
2100-01-01
Identifiers
External DOI: https://doi.org/10.1140/epjc/s10052-018-6046-z
This record's URL: https://www.repository.cam.ac.uk/handle/1810/284191
Statistics
Total file downloads (since January 2020). For more information on metrics see the
IRUS guide.