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MSSM Higgs Self-Couplings: Two-Loop O(alpha_t alpha_s) Corrections

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2014
Author Mathias Brucherseifer Ryan Gavin Michael Spira,
Project Präzisionsrechnungen zum supersymmetrischen Higgspotential
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Original article (peer-reviewed)

Journal Physical Review
Volume (Issue) D90(11)
Page(s) 117701-1 - 117701-5
Title of proceedings Physical Review
DOI 10.1103/PhysRevD.90.117701


We analyze the minimal supersymmetric Higgs self-couplings at O(alpha_t alpha_s) within the effective potential approach. The two-loop corrections turn out to be of moderate size in the DRbar scheme if the central scale is chosen as half the SUSY scale. The inclusion of the two-loop corrections reduces the renormalization scale dependence to the per-cent level. These results have a significant impact on measurements of the trilinear Higgs self-couplings at the LHC and a future e^+e^- collider.