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Momentum-dependent two-loop QCD corrections to the neutral Higgs-boson masses in the MSSM

Borowka, S. ; Hahn, T. ; Heinemeyer, S. ; Heinrich, G. ; Hollik, W.

The European physical journal. C, Particles and fields, 2014-08, Vol.74 (8), p.1-15, Article 2994 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
Momentum-dependent two-loop QCD corrections to the neutral Higgs-boson masses in the MSSM
Autor: Borowka, S. ; Hahn, T. ; Heinemeyer, S. ; Heinrich, G. ; Hollik, W.
Assuntos: Astronomy ; Astrophysics and Cosmology ; Elementary Particles ; Hadrons ; Heavy Ions ; Higgs bosons ; Measurement Science and Instrumentation ; Nuclear Energy ; Nuclear Physics ; Physics ; Physics and Astronomy ; Quantum Field Theories ; Quantum Field Theory ; Regular Article - Theoretical Physics ; String Theory ; Texts ; Uncertainty
É parte de: The European physical journal. C, Particles and fields, 2014-08, Vol.74 (8), p.1-15, Article 2994
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Results are presented for the momentum-dependent two-loop contributions of O ( α t α s ) to the masses and mixing effects in the Higgs sector of the MSSM. They are obtained in the Feynman-diagrammatic approach using a mixed on-shell/ DR ¯ renormalization that can directly be matched onto the higher-order corrections included in the code FeynHiggs. The new two-loop diagrams are evaluated with the program SecDec. The combination of the new momentum-dependent two-loop contribution with the existing one- and two-loop corrections in the on-shell/ DR ¯ scheme leads to an improved prediction of the light MSSM Higgs boson mass and a correspondingly reduced theoretical uncertainty. We find that the corresponding shifts in the lightest Higgs-boson mass M h are below 1 GeV in all scenarios considered, but they can extend up to the level of the current experimental uncertainty. The results are included in the code FeynHiggs.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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Momentum-dependent two-loop QCD corrections to the neutral Higgs-boson masses in the MSSM

Borowka, S. ; Hahn, T. ; Heinemeyer, S. ; Heinrich, G. ; Hollik, W.

Berlin/Heidelberg: Springer Berlin Heidelberg

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