Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP12(2017)084
Keywords
Beyond Standard Model; Higgs Physics
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Funding
- Spanish Government
- ERDF funds from the EU Commission [FPA2014-53631-C2-1-P]
- Spanish Centro de Excelencia Severo Ochoa Programme [SEV-2014-0398]
- Ministerio de Educacion, Cultura y Deporte, Spain [FPU15/05103]
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Extended electroweak scalar sectors containing several doublet multiplets require flavour-aligned Yukawa matrices to prevent the appearance at tree level of unwanted flavour-changing neutral-current transitions. We analyse the misalignment induced by one-loop quantum corrections and explore possible generalizations of the alignment condition and their compatibility with current experimental constraints. The hypothesis of flavour alignment at a high scale turns out to be consistent with all known phenomenological tests.
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