2011/11/30 by Philipp Kant
Physics and Astronomy · #Black Holes and Theoretical Physics #Higgs boson #Large Hadron Collider #Minimal Supersymmetric Standard Model #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Standard Model (mathematical formulation) #Supersymmetry #hep-ph
paper · pdf · doi:10.1088/1742-6596/368/1/012053
Talk given at ACAT 2011 conference in London, 5-9 September
arxiv created 2011/11/30 · openalex publication_date 2012/06/21 · arxiv updated 2015/06/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A Key feature of the minimal supersymmetric extension of the Standard Model (MSSM) is the existence of a light Higgs boson, the mass of which is not a free parameter but an observable that can be predicted from the theory. Given that the LHC is able to measure the mass of a light Higgs with very good accuracy, a lot of effort has been put into a precise theoretical prediction. We present a calculation of the SUSY-QCD corrections to this observable to three-loop order. We perform multiple asymptotic expansions in order to deal with the multi-scale three-loop diagrams, making heavy use of computer algebra and keeping a keen eye on the numerical error introduced. We provide a computer code in the form of a Mathematica package that combines our three-loop SUSY-QCD calculation with the literature of one- and two-loop corrections to the Higgs mass, providing a state-of-the-art prediction for this important observable.