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Author |
Serodio, H. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Yukawa sector of multi-Higgs-doublet models in the presence of Abelian symmetries |
Type |
Journal Article |
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Year |
2013 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
88 |
Issue |
5 |
Pages |
056015 - 48pp |
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Abstract ![sorted by Abstract field, ascending order (up)](img/sort_asc.gif) |
A general method for classifying the possible quark models of a multi-Higgs-doublet model, in the presence of Abelian symmetries, is presented. All the possible sets of textures that can be present in a given sector are shown, thus turning the determination of the flavor models into a combinatorial problem. Several symmetry implementations are studied for two and three Higgs doublet models. Some models' implementations are explored in great detail, with a particular emphasis on models known as Branco-Grimus-Lavoura and nearest-neighbor-interaction. Several considerations on the flavor changing neutral currents of multi-Higgs models are also given. |
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Address |
[Serodio, H.] Univ Valencia, CSIC, Dept Fis Teor, E-46100 Burjassot, Spain, Email: Hugo.Serodio@ific.uv.es |
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Publisher |
Amer Physical Soc |
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Language |
English |
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ISSN |
1550-7998 |
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Notes |
WOS:000324541000001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
1591 |
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Permanent link to this record |
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Author |
Felipe, R.G.; Joaquim, F.R.; Serodio, H. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Flavored CP asymmetries for type II seesaw leptogenesis |
Type |
Journal Article |
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Year |
2013 |
Publication |
International Journal of Modern Physics A |
Abbreviated Journal |
Int. J. Mod. Phys. A |
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Volume |
28 |
Issue |
31 |
Pages |
1350165 - 13pp |
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Keywords |
Leptogenesis; neutrino physics; seesaw mechanism |
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Abstract ![sorted by Abstract field, ascending order (up)](img/sort_asc.gif) |
A novel contribution to the leptonic CP asymmetries in type II seesaw leptogenesis scenarios is obtained for the cases in which flavor effects are relevant for the dynamics of leptogenesis. In the so-called flavored leptogenesis regime, the interference between the tree-level amplitude of the scalar triplet decaying into two leptons and the one-loop wave function correction with leptons in the loop, leads to a new nonvanishing CP asymmetry contribution. The latter conserves total lepton number but violates lepton flavor. Cases in which this novel contribution may be dominant in the generation of the baryon asymmetry are briefly discussed. |
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Address |
[Gonzalez Felipe, R.; Joaquim, F. R.] Univ Tecn Lisboa, Dept Fis, P-1049001 Lisbon, Portugal, Email: ricardo.felipe@ist.utl.pt; |
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Publisher |
World Scientific Publ Co Pte Ltd |
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English |
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ISSN |
0217-751x |
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Conference |
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Notes |
WOS:000329057000009 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1764 |
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Permanent link to this record |
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Author |
Gonzalez Felipe, R.; Serodio, H. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Abelian realization of phenomenological two-zero neutrino textures |
Type |
Journal Article |
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Year |
2014 |
Publication |
Nuclear Physics B |
Abbreviated Journal |
Nucl. Phys. B |
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Volume |
886 |
Issue |
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Pages |
75-92 |
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Abstract ![sorted by Abstract field, ascending order (up)](img/sort_asc.gif) |
In an attempt at explaining the observed neutrino mass-squared differences and leptonic mixing, lepton mass matrices with zero textures have been widely studied. In the weak basis where the charged lepton mass matrix is diagonal, various neutrino mass matrices with two zeros have been shown to be consistent with the current experimental data. Using the canonical and Smith normal form methods, we construct the minimal Abelian symmetry realizations of these phenomenological two-zero neutrino textures. The implementation of these symmetries in the context of the seesaw mechanism for Majorana neutrino masses is also discussed. |
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Address |
[Gonzalez Felipe, R.] Inst Super Engn Lisboa ISEL, P-1959007 Lisbon, Portugal, Email: ricardo.felipe@ist.utl.pt; |
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Publisher |
Elsevier Science Bv |
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English |
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Edition |
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ISSN |
0550-3213 |
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Expedition |
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Conference |
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Notes |
WOS:000341344500005 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1917 |
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Permanent link to this record |
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Author |
Gonzalez Felipe, R.; Ivanov, I.P.; Nishi, C.C.; Serodio, H.; Silva, J.P. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Constraining multi-Higgs flavour models |
Type |
Journal Article |
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Year |
2014 |
Publication |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
74 |
Issue |
7 |
Pages |
2953 - 12pp |
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Keywords |
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Abstract ![sorted by Abstract field, ascending order (up)](img/sort_asc.gif) |
To study a flavour model with a non-minimal Higgs sector one must first define the symmetries of the fields; then identify what types of vacua exist and how they may break the symmetries; and finally determine whether the remnant symmetries are compatible with the experimental data. Here we address all these issues in the context of flavour models with any number of Higgs doublets. We stress the importance of analysing the Higgs vacuum expectation values that are pseudo-invariant under the generators of all subgroups. It is shown that the only way of obtaining a physical CKM mixing matrix and, simultaneously, non-degenerate and non-zero quark masses is requiring the vacuum expectation values of the Higgs fields to break completely the full flavour group, except possibly for some symmetry belonging to baryon number. The application of this technique to some illustrative examples, such as the flavour groups Delta (27), A(4) and S-3, is also presented. |
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Address |
[Gonzalez Felipe, R.; Silva, Joao P.] ISEL, P-1959007 Lisbon, Portugal, Email: gonzalez@cftp.ist.utl.pt; |
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Thesis |
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Publisher |
Springer |
Place of Publication |
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Language |
English |
Summary Language |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1434-6044 |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:000350743900002 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2126 |
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Permanent link to this record |
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Author |
Celis, A.; Fuentes-Martin, J.; Serodio, H. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
A class of invisible axion models with FCNCs at tree level |
Type |
Journal Article |
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Year |
2014 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
12 |
Issue |
12 |
Pages |
167 - 53pp |
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Keywords |
Beyond Standard Model; CP violation; Global Symmetries |
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Abstract ![sorted by Abstract field, ascending order (up)](img/sort_asc.gif) |
We build a class of invisible axion models with tree-level Flavor Changing Neutral Currents completely controlled by the fermion mixing matrices. The scalar sector of these models contains three-Higgs doublets and a complex scalar gauge singlet, with the same fermionic content as in the Standard Model. A horizontal Peccei-Quinn symmetry provides a solution to the strong CP problem and predicts the existence of a very light and weakly coupled pseudo-Goldstone boson, the invisible axion or familon. A phenomenological analysis is performed taking into account familon searches in rare kaon and muon decays, astrophysical considerations and axion searches via axion-photon conversion. Drastic differences are found in the axion properties of different models due to the strong hierarchy of the CKM matrix, making some of the models considered much more constrained than others. We also obtain that a rich variety of these models avoid the domain wall problem. A possible mechanism to protect the solution to the strong CP problem against gravitational effects is also discussed. |
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Address |
[Celis, Alejandro; Fuentes-Martin, Javier] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain, Email: alejandro.celis@ific.uv.es; |
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Corporate Author |
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Thesis |
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Publisher |
Springer |
Place of Publication |
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Editor |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1029-8479 |
ISBN |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:000347160000001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2067 |
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Permanent link to this record |