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Physical constraints on a class of two-Higgs doublet models with FCNC at tree level

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Physical constraints on a class of two-Higgs doublet models with FCNC at tree level

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dc.contributor.author	Botella Olcina, Francisco J.
dc.contributor.author	Branco, Gustavo Castelo
dc.contributor.author	Carmona, Adrián
dc.contributor.author	Nebot Gómez, Miguel
dc.contributor.author	Pedro, Leonardo
dc.contributor.author	Rebelo, M. N.
dc.date.accessioned	2014-09-24T10:36:33Z
dc.date.available	2014-09-24T10:36:33Z
dc.date.issued	2014
dc.identifier.citation	Botella Olcina, Francisco J. Branco, Gustavo Castelo Carmona, Adrián Nebot Gómez, Miguel Pedro, Leonardo Rebelo, M. N. 2014 Physical constraints on a class of two-Higgs doublet models with FCNC at tree level Journal of High Energy Physics 07 7 078-1 078-33
dc.identifier.uri	http://hdl.handle.net/10550/38953
dc.description.abstract	We analyse the constraints and some of the phenomenological implications of a class of two Higgs doublet models where there are flavour-changing neutral currents (FCNC) at tree level but the potentially dangerous FCNC couplings are suppressed by small entries of the CKM matrix V. This class of models have the remarkable feature that, as a result of a discrete symmetry of the Lagrangian, the FCNC couplings are entirely fixed in the quark sector by V and the ratio v(2)/v(1) of the vevs of the neutral Higgs. The discrete symmetry is extended to the leptonic sector, so that there are FCNC in the leptonic sector with their flavour structure fixed by the leptonic mixing matrix. We analyse a large number of processes, including decays mediated by charged Higgs at tree level, processes involving FCNC at tree level, as well as loop induced processes. We show that in this class of models one has new physical scalars beyond the standard Higgs boson, with masses reachable at the next round of experiments.
dc.language.iso	eng
dc.relation.ispartof	Journal of High Energy Physics, 2014, vol. 07, num. 7, p. 078-1-078-33
dc.subject	Física
dc.title	Physical constraints on a class of two-Higgs doublet models with FCNC at tree level
dc.type	journal article	es_ES
dc.date.updated	2014-09-24T10:36:33Z
dc.identifier.doi	10.1007/JHEP07(2014)078
dc.identifier.idgrec	099194
dc.rights.accessRights	open access	es_ES