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Refinements of the bottom and strange MSSM Higgs Yukawa couplings at NNLO

Ghezzi, Margherita; Glaus, Seraina; Müller, Dario; Schmidt, Timo; Spira, Michael

Abstract:
We extend the already existing two-loop calculation of the effective bottom-Yukawa coupling in the MSSM. In addition to the resummation of the dominant corrections for large values of tgβ, we include the subleading terms related to the trilinear Higgs coupling A$_{b}$ and contributions induced by the electroweak gauge couplings. This calculation has been extended to the NNLO corrections to the MSSM strange-Yukawa coupling. Our analysis leads to residual theoretical uncertainties of the effective Yukawa couplings at the per-cent level.

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Verlagsausgabe §
DOI: 10.5445/IR/1000131405
Veröffentlicht am 16.04.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
KITopen-ID: 1000131405
Erschienen in European Physical Journal C
Verlag Springer Verlag
Band 81
Heft 3
Seiten 259
Nachgewiesen in Scopus
Web of Science
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