Flavour alignment in multi-Higgs-doublet models

6533b826fe1ef96bd128531e

RESEARCH PRODUCT

Flavour alignment in multi-Higgs-doublet models

Ana Peñuelas Antonio Pich

subject

Nuclear and High Energy Physics Particle physics Higgs Physics High Energy Physics::Lattice Flavour FOS: Physical sciences 01 natural sciences symbols.namesake High Energy Physics - Phenomenology (hep-ph)0103 physical sciences lcsh:Nuclear and particle physics. Atomic energy. Radioactivity 010306 general physics Multiplet Quantum Physics Neutral current 010308 nuclear & particles physics Electroweak interaction High Energy Physics::Phenomenology Yukawa potential High Energy Physics - Phenomenology Beyond Standard Model symbols Higgs boson lcsh:QC770-798 Higgs mechanism

description

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.

year	journal	country	edition	language
2017-12-01	Journal of High Energy Physics

10.1007/jhep12(2017)084 http://link.springer.com/article/10.1007/JHEP12(2017)084

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