2024-03-29T02:12:54Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/964982016-02-18T02:41:03Zcom_10261_61com_10261_4col_10261_314
Electric dipole moments in two-Higgs-doublet models
Jung, Martin
Pich, Antonio
SCOAP
Electric dipole moments are extremely sensitive probes for additional sources of CP violation in new physics models. Specifically, they have been argued in the past to exclude new CP-violating phases in two-Higgs-doublet models. Since recently models including such phases have been discussed widely, we revisit the available constraints in the presence of mechanisms which are typically invoked to evade flavour-changing neutral currents. To that aim, we start by assessing the necessary calculations on the hadronic, nuclear and atomic/molecular level, deriving expressions with conservative error estimates. Their phenomenological analysis in the context of two-Higgs-doublet models yields strong constraints, in some cases weakened by a cancellation mechanism among contributions from neutral scalars. While the corresponding parameter combinations do not yet have to be unnaturally small, the constraints are likely to preclude large effects in other CP-violating observables. Nevertheless, the generically expected contributions to electric dipole moments in this class of models lie within the projected sensitivity of the next-generation experiments.
This work has been supported in part by the Spanish Government and EU funds for regional development [grants FPA2007-60323, FPA2011-23778 and CSD2007-00042 (Consolider Project CPAN)], and the Generalitat Valenciana [PrometeoII/2013/007]. The work of M.J. is funded by the german Federal Ministry of Education and Research (BMBF).
Peer reviewed
2014-05-12T09:03:03Z
2014-05-12T09:03:03Z
2014-04-10
artÃculo
http://purl.org/coar/resource_type/c_6501
Journal of High Energy Physics 2014: 107 (2014)
http://hdl.handle.net/10261/96498
10.1007/JHEP04(2014)076
1029-8479
en
Publisher's version
http://dx.doi.org/10.1007/JHEP04(2014)076
open
Springer