https://doi.org/10.1140/epjc/s10052-016-3993-0
Regular Article - Theoretical Physics
Flavour-changing Higgs couplings in a class of two Higgs doublet models
1
Departament de Física Teòrica and IFIC, Universitat de València-CSIC, 46100, Burjassot, Spain
2
Departamento de Física and Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), U. de Lisboa (UL), Av. Rovisco Pais, 1049-001, Lisbon, Portugal
3
Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), U. de Lisboa (UL), Av. Rovisco Pais, 1049-001, Lisbon, Portugal
* e-mail: rebelo@tecnico.ulisboa.pt
** e-mail: nebot@cftp.ist.utl.pt
Received:
20
September
2015
Accepted:
29
February
2016
Published online:
23
March
2016
We analyse various flavour-changing processes like ,
as well as hadronic decays
, in the framework of a class of two Higgs doublet models where there are flavour-changing neutral scalar currents at tree level. These models have the remarkable feature of having these flavour-violating couplings entirely determined by the CKM and PMNS matrices as well as
. The flavour structure of these scalar currents results from a symmetry of the Lagrangian and therefore it is natural and stable under the renormalisation group. We show that in some of the models the rates of the above flavour-changing processes can reach the discovery level at the LHC at 13 TeV even taking into account the stringent bounds on low energy processes, in particular
.
© The Author(s), 2016