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Author |
Felipe, R.G.; Serodio, H.; Silva, J.P. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Models with three Higgs doublets in the triplet representations of A(4) or S-4 |
Type |
Journal Article |
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Year |
2013 |
Publication |
Physical Review D |
Abbreviated Journal ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
Phys. Rev. D |
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Volume |
87 |
Issue |
5 |
Pages |
055010 - 7pp |
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Abstract |
We consider the quark sector of theories containing three scalar SU(2)(L) doublets in the triplet representation of A(4) (or S-4) and three generations of quarks in arbitrary A(4) (or S-4) representations. We show that for all possible choices of quark field representations and for all possible alignments of the Higgs vacuum expectation values that can constitute global minima of the scalar potential, it is not possible to obtain simultaneously nonvanishing quark masses and a nonvanishing CP-violating phase in the Cabibbo-Kobayashi-Maskawa quark mixing matrix. As a result, in this minimal form, models with three scalar fields in the triplet representation of A(4) or S-4 cannot be extended to the quark sector in a way consistent with experiment. |
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Address |
[Gonzalez Felipe, R.; Silva, Joao P.] Inst Super Engn Lisboa ISEL, P-1959007 Lisbon, Portugal, Email: ricardo.felipe@ist.utl.pt; |
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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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Expedition |
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Conference |
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Notes |
WOS:000316108400010 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1371 |
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Permanent link to this record |
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Author |
Gonzalez Felipe, R.; Serodio, H.; Silva, J.P. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Neutrino masses and mixing in A(4) models with three Higgs doublets |
Type |
Journal Article |
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Year |
2013 |
Publication |
Physical Review D |
Abbreviated Journal ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
Phys. Rev. D |
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Volume |
88 |
Issue |
1 |
Pages |
015015 - 10pp |
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Keywords |
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Abstract |
We study neutrino masses and mixing in the context of flavor models with A(4) symmetry, three scalar doublets in the triplet representation, and three lepton families. We show that there is no representation assignment that yields a dimension-5 mass operator consistent with experiment. We then consider a type-I seesaw with three heavy right-handed neutrinos, explaining in detail why it fails, and allowing us to show that agreement with the present neutrino oscillation data can be recovered with the inclusion of dimension-3 heavy neutrino mass terms that break softly the A(4) symmetry. |
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Address |
[Felipe, R. Gonzalez; Silva, Joao P.] Inst Super Engn Lisboa, P-1959007 Lisbon, Portugal, Email: ricardo.felipe@ist.utl.pt; |
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Thesis |
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Publisher |
Amer Physical Soc |
Place of Publication |
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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 Volume |
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ISSN |
1550-7998 |
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Expedition |
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Conference |
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Notes |
WOS:000321737600009 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1499 |
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Permanent link to this record |
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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 ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
Phys. Rev. D |
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Volume |
88 |
Issue |
5 |
Pages |
056015 - 48pp |
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Keywords |
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Abstract |
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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Thesis |
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Publisher |
Amer Physical Soc |
Place of Publication |
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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 |
1550-7998 |
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Area |
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Expedition |
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Conference |
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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 |
Celis, A.; Fuentes-Martin, J.; Jung, M.; Serodio, H. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Family nonuniversal Z ' models with protected flavor-changing interactions |
Type |
Journal Article |
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Year |
2015 |
Publication |
Physical Review D |
Abbreviated Journal ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
Phys. Rev. D |
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Volume |
92 |
Issue |
1 |
Pages |
015007 - 17pp |
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Keywords |
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Abstract |
We define a new class of Z' models with neutral flavor-changing interactions at tree level in the down-quark sector. They are related in an exact way to elements of the quark mixing matrix due to an underlying flavored U(1)' gauge symmetry, rendering these models particularly predictive. The same symmetry implies lepton-flavor nonuniversal couplings, fully determined by the gauge structure of the model. Our models allow us to address presently observed deviations from the standard model and specific correlations among the new physics contributions to the Wilson coefficients C-9, 10((')l) can be tested in b -> sl(+)l(-) transitions. We furthermore predict lepton-universality violations in Z' decays, testable at the LHC. |
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Address |
[Celis, Alejandro] Univ Munich, Fak Phys, Arnold Sommerfeld Ctr Theoret Phys, D-80333 Munich, Germany, Email: alejandro.celis@physik.uni-muenchen.de; |
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Publisher |
Amer Physical Soc |
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 |
1550-7998 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:000357859300004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2341 |
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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 |
Effective aligned 2HDM with a DFSZ-like invisible axion |
Type |
Journal Article |
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Year |
2014 |
Publication |
Physics Letters B |
Abbreviated Journal ![sorted by Abbreviated Journal field, descending order (down)](img/sort_desc.gif) |
Phys. Lett. B |
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Volume |
737 |
Issue |
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Pages |
185-190 |
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Keywords |
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Abstract |
We discuss the possibility of having a non-minimal scalar sector at the weak scale within the framework of invisible axion models. To frame our discussion we consider an extension of the Dine-Fischler-Srednicki-Zhitnitsky invisible axion model with two additional Higgs doublets blind under the Peccei-Quinn symmetry. Due to mixing effects among the scalar fields, it is possible to obtain a rich scalar sector at the weak scale in certain decoupling limits of the theory. In particular, this framework provides an ultraviolet completion of the so-called aligned two-Higgs-doublet model and solves the strong CP problem. The axion properties and the smallness of active neutrino masses are also discussed. |
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Address |
[Serodio, Hugo] Univ Valencia, CSIC, Dept Fis Teor, E-46100 Burjassot, Spain, Email: alejandro.celis@ific.uv.es; |
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Corporate Author |
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Thesis |
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Publisher |
Elsevier Science Bv |
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 |
0370-2693 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:000342757700032 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
1967 |
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Permanent link to this record |