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          Institute: MPI für Physik     Collection: YB 2016     Display Documents



ID: 716020.0, MPI für Physik / YB 2016
Two-loop QCD corrections to the MSSM Higgs masses beyond the effective-potential approximation
Authors:Degrassi, G.; Di Vita, S.; Slavich, P.
Date of Publication (YYYY-MM-DD):2015
Title of Journal:European Physical Journal C
Journal Abbrev.:Eur.Phys.J.C
Issue / Number:75
Start Page:61
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We compute the two-loop QCD corrections to the neutral Higgs-boson masses in the MSSM, including the effect of non-vanishing external momenta in the self-energies. We obtain corrections of O(alpha_t*alpha_s) and O(alpha*alpha_s), i.e., all two-loop corrections that involve the strong gauge coupling when the only non-vanishing Yukawa coupling is the top one. We adopt either the DRbar renormalization scheme or a mixed OS-DRbar scheme where the top/stop parameters are renormalized on-shell. We compare our results with those of earlier calculations, pointing out an inconsistency in a recent result obtained in the mixed OS-DRbar scheme. The numerical impact of the new corrections on the prediction for the lightest-scalar mass is moderate, but already comparable to the accuracy of the Higgs-mass measurement at the LHC.
Classification / Thesaurus:Phenomenology of High Energy Physics
Comment of the Author/Creator:22 pages, 5 pdf figures; v2: version to appear in EPJC
External Publication Status:published
Document Type:Article
Communicated by:MPI für Physik
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2014-373
URL:http://inspirehep.net/search?p=find+eprint+1410.34...
URL:http://arXiv.org/abs/arxiv:1410.3432
URL:https://publications.mppmu.mpg.de/?action=search&m...
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