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Author |
KM3NeT Collaboration (Adrian-Martinez, S. et al); Barrios-Marti, J.; Calvo Diaz-Aldagalan, D.; Hernandez-Rey, J.J.; Illuminati, G.; Lotze, M.; Olcina, I.; Real, D.; Sanchez Garcia, A.; Tönnis, C.; Zornoza, J.D.; Zuñiga, J. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Letter of intent for KM3NeT 2.0 |
Type |
Journal Article |
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Year |
2016 |
Publication |
Journal of Physics G |
Abbreviated Journal |
J. Phys. G |
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Volume |
43 |
Issue |
8 |
Pages |
084001 - 130pp |
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Keywords |
neutrino astronomy; neutrino physics; deep sea neutrino telescope; neutrino mass hierarchy |
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Abstract |
The main objectives of the KM3NeT Collaboration are (i) the discovery and subsequent observation of high-energy neutrino sources in the Universe and (ii) the determination of the mass hierarchy of neutrinos. These objectives are strongly motivated by two recent important discoveries, namely: (1) the high-energy astrophysical neutrino signal reported by IceCube and (2) the sizable contribution of electron neutrinos to the third neutrino mass eigenstate as reported by Daya Bay, Reno and others. To meet these objectives, the KM3NeT Collaboration plans to build a new Research Infrastructure consisting of a network of deep-sea neutrino telescopes in the Mediterranean Sea. A phased and distributed implementation is pursued which maximises the access to regional funds, the availability of human resources and the synergistic opportunities for the Earth and sea sciences community. Three suitable deep-sea sites are selected, namely off-shore Toulon (France), Capo Passero (Sicily, Italy) and Pylos (Peloponnese, Greece). The infrastructure will consist of three so-called building blocks. A building block comprises 115 strings, each string comprises 18 optical modules and each optical module comprises 31 photo-multiplier tubes. Each building block thus constitutes a three-dimensional array of photo sensors that can be used to detect the Cherenkov light produced by relativistic particles emerging from neutrino interactions. Two building blocks will be sparsely configured to fully explore the IceCube signal with similar instrumented volume, different methodology, improved resolution and complementary field of view, including the galactic plane. One building block will be densely configured to precisely measure atmospheric neutrino oscillations. |
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Address |
[Adrian-Martinez, S.; Ardid, M.; Llorens Alvarez, C. D.; Martinez-Mora, J. A.; Saldana, M.] Univ Politecn Valencia, Inst Invest Gest Integrada Zonas Costeras, C Paranimf 1, E-46730 Gandia, Spain, Email: brunner@cppm.in2p3.fr; |
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Iop Publishing Ltd |
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English |
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ISSN |
0954-3899 |
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WOS:000381686700001 |
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no |
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Is ISI |
yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2773 |
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Author |
Hernandez, P.; Kekic, M.; Lopez-Pavon, J.; Racker, J.; Salvado, J. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Testable baryogenesis is in seesaw models |
Type |
Journal Article |
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Year |
2016 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
08 |
Issue |
8 |
Pages |
157 - 29pp |
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Keywords |
Cosmology of Theories beyond the SM; CP violation; Neutrino Physics; Beyond Standard Model |
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Abstract |
We revisit the production of baryon asymmetries in the minimal type I seesaw model with heavy Majorana singlets in the GeV range. In particular we include “washout” effects from scattering processes with gauge bosons, Higgs decays and inverse decays, besides the dominant top scatterings. We show that in the minimal model with two singlets, and for an inverted light neutrino ordering, future measurements from SHiP and neutrinoless double beta decay could in principle provide sufficient information to predict the matter-antimatter asymmetry in the universe. We also show that SHiP measurements could provide very valuable information on the PMNS CP phases. |
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Address |
[Hernandez, P.; Kekic, M.; Racker, J.; Salvado, J.] Univ Valencia, Inst Fis Corpuscular, Edificio Inst Invest,Catedrat Jose Beltran 2, Valencia 46980, Spain, Email: m.pilar.hernandez@uv.es; |
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Springer |
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1029-8479 |
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WOS:000382398000004 |
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no |
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yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2787 |
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Author |
Anamiati, G.; Hirsch, M.; Nardi, E. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Quasi-Dirac neutrinos at the LHC |
Type |
Journal Article |
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Year |
2016 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
10 |
Issue |
10 |
Pages |
010 - 19pp |
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Keywords |
Beyond Standard Model; Neutrino Physics |
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Abstract |
Lepton number violation is searched for at the LHC using same-sign leptons plus jets. The standard lore is that the ratio of same-sign lepton to opposite-sign lepton events, R-ll, is equal to R-ll = 1 (R-ll = 0) for Majorana (Dirac) neutrinos. We clarify under which conditions the ratio Rll can assume values different from 0 and 1, and we argue that the precise value 0 < R-ll < 1 is controlled by the mass splitting versus the width of the quasi-Dirac resonances. A measurement of R-ll not equal 0, 1 would then contain valuable information about the origin of neutrino masses. We consider as an example the inverse seesaw mechanism in a left-right symmetric scenario, which is phenomenologically particularly interesting since all the heavy states in the high energy completion of the model could be within experimental reach. A prediction of this scenario is a correlation between the values of R-ll and the ratio between the rates for heavy neutrino decays into standard model gauge bosons, and into three body final states ljj mediated by off-shell W-R exchange. |
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Address |
[Anamiati, G.; Hirsch, M.] Univ Valencia, AHEP Grp, CSIC, Inst Fis Corpuscular, Edificio Inst Invest,Parc Cient Paterna, E-46071 Valencia, Spain, Email: anamiati@ific.uv.es; |
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Springer |
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English |
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1029-8479 |
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Notes |
WOS:000385397800001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2834 |
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Permanent link to this record |
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Author |
Herrero-Garcia, J.; Rius, N.; Santamaria, A. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Higgs lepton flavour violation: UV completions and connection to neutrino masses |
Type |
Journal Article |
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Year |
2016 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
11 |
Issue |
11 |
Pages |
084 - 45pp |
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Keywords |
Beyond Standard Model; Higgs Physics; Neutrino Physics |
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Abstract |
We study lepton violating Higgs (HLFV) decays, first from the effective field theory (EFT) point of view, and then analysing the different high-energy realizations of the operators of the EFT, highlighting the most promising models. We argue why two Higgs doublet models can have a BR(h -> tau mu) similar to 0:01, and why this rate is suppressed in all other realizations including vector-like leptons. We further discuss HLFV in the context of neutrino mass models: in most cases it is generated at one loop giving always BR (h -> tau mu) < 10(-4) and typically much less, which is beyond experimental reach. However, both the Zee model and extended left-right symmetric models contain extra SU(2) doublets coupled to leptons and could in principle account for the observed excess, with interesting connections between HLFV and neutrino parameters. |
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Address |
[Herrero-Garcia, Juan] KTH Royal Inst Technol, AlbaNova Univ Ctr, Sch Engn Sci, Dept Theoret Phys, S-10691 Stockholm, Sweden, Email: juhg@kth.se; |
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Springer |
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English |
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1029-8479 |
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WOS:000387843300004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2862 |
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Permanent link to this record |
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Author |
Escudero, M.; Rius, N.; Sanz, V. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Sterile neutrino portal to Dark Matter I: the U(1)(B-L) case |
Type |
Journal Article |
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Year |
2017 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
02 |
Issue |
2 |
Pages |
045 - 27pp |
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Keywords |
Beyond Standard Model; Neutrino Physics |
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Abstract |
In this paper we explore the possibility that the sterile neutrino and Dark Matter sectors in the Universe have a common origin. We study the consequences of this assumption in the simple case of coupling the dark sector to the Standard Model via a global U(1)(B-L), broken down spontaneously by a dark scalar. This dark scalar provides masses to the dark fermions and communicates with the Higgs via a Higgs portal coupling. We find an interesting interplay between Dark Matter annihilation to dark scalars – the CP-even that mixes with the Higgs and the CP-odd which becomes a Goldstone boson, the Majoron and heavy neutrinos, as well as collider probes via the coupling to the Higgs. Moreover, Dark Matter annihilation into sterile neutrinos and its subsequent decay to gauge bosons and quarks, charged leptons or neutrinos lead to indirect detection signatures which are close to current bounds on the gamma ray flux from the galactic center and dwarf galaxies. |
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Address |
[Escudero, Miguel; Rius, Nuria] Univ Valencia, Dept Fis Teor, CSIC, C Catedrat Jose Beltran 2, E-46980 Paterna, Spain, Email: miguel.escudero@ific.uv.es; |
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Springer |
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English |
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1029-8479 |
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Notes |
WOS:000394747600008 |
Approved |
no |
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Is ISI |
yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
3018 |
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Permanent link to this record |
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Author |
Bonilla, C.; Krauss, M.E.; Opferkuch, T.; Porod, W. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Perspectives for detecting lepton flavour violation in left-right symmetric models |
Type |
Journal Article |
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Year |
2017 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
03 |
Issue |
3 |
Pages |
027 - 50pp |
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Keywords |
Beyond Standard Model; Neutrino Physics |
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Abstract |
We investigate lepton flavour violation in a class of minimal left-right symmetric models where the left-right symmetry is broken by triplet scalars. In this context we present a method to consistently calculate the triplet-Yukawa couplings which takes into account the experimental data while simultaneously respecting the underlying symmetries. Analysing various scenarios, we then calculate the full set of tree-level and one-loop contributions to all radiative and three-body flavour-violating fully leptonic decays as well as well as μ- e conversion in nuclei. Our method illustrates how these processes depend on the underlying parameters of the theory. To that end we observe that, for many choices of the model parameters, there is a strong complementarity between the different observables. For instance, in a large part of the parameter space, lepton flavour violating T-decays have a large enough branching ratio to be measured in upcoming experiments. Our results further show that experiments coming online in the immediate future, like Mu3e and BELLE II, or longer-term, such as PRISM/PRIME, will probe significant portions of the currently allowed parameter space. |
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Address |
[Bonilla, Cesar] Univ Valencia, Inst Fis Corpuscular, CSIC, AHEP Grp, Edificio Inst Paterna, E-46980 Paterna, Valencia, Spain, Email: cesar.bonilla@ific.uv.es; |
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Springer |
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English |
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1029-8479 |
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WOS:000397669900009 |
Approved |
no |
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Is ISI |
yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
3027 |
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Permanent link to this record |
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Author |
Gonzalez, L.; Helo, J.C.; Hirsch, M.; Kovalenko, S.G. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Scalar-mediated double beta decay and LHC |
Type |
Journal Article |
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Year |
2016 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
12 |
Issue |
12 |
Pages |
130 - 15pp |
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Keywords |
Beyond Standard Model; Neutrino Physics |
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Abstract |
The decay rate of neutrinoless double beta (0 nu beta beta) decay could be dominated by Lepton Number Violating (LNV) short-range diagrams involving only heavy scalar intermediate particles, known as “topology-II” diagrams. Examples are diagrams with diquarks, leptoquarks or charged scalars. Here, we compare the LNV discovery potentials of the LHC and 0 nu beta beta-decay experiments, resorting to three example models, which cover the range of the optimistic-pessimistic cases for 0 nu beta beta decay. We use the LHC constraints from dijet as well as leptoquark searches and find that already with 20/fb the LHC will test interesting parts of the parameter space of these models, not excluded by the current limits on 0 nu beta beta-decay. |
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Address |
[Gonzalez, L.; Helo, J. C.; Kovalenko, S. G.] Univ Tecn Federico Santa Maria, Ctr Cient Tecnol Valparaiso, Casilla 110-5, Valparaiso, Chile, Email: lorena.gonzalez@alumnos.usm.cl; |
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Springer |
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English |
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1029-8479 |
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Notes |
WOS:000399774600001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
3060 |
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Permanent link to this record |
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Author |
Farzan, Y.; Tortola, M. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Neutrino oscillations and non-standard Interactions |
Type |
Journal Article |
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Year |
2018 |
Publication |
Frontiers in Physics |
Abbreviated Journal |
Front. Physics |
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Volume |
6 |
Issue |
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Pages |
10 - 34pp |
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Keywords |
neutrino oscillations; leptonic CP violation; non-standard neutrino interactions; neutrino masses; neutrino physics |
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Abstract |
Current neutrino experiments are measuring the neutrino mixing parameters with an unprecedented accuracy. The upcoming generation of neutrino experiments will be sensitive to subdominant neutrino oscillation effects that can in principle give information on the yet-unknown neutrino parameters: the Dirac CP-violating phase in the PMNS mixing matrix, the neutrino mass ordering and the octant of.23. Determining the exact values of neutrino mass and mixing parameters is crucial to test various neutrino models and flavor symmetries that are designed to predict these neutrino parameters. In the first part of this review, we summarize the current status of the neutrino oscillation parameter determination. We consider the most recent data from all solar neutrino experiments and the atmospheric neutrino data from Super-Kamiokande, IceCube, and ANTARES. We also implement the data from the reactor neutrino experiments KamLAND, Daya Bay, RENO, and Double Chooz as well as the long baseline neutrino data from MINOS, T2K, and NO.A. If in addition to the standard interactions, neutrinos have subdominant yet-unknown Non-Standard Interactions (NSI) with matter fields, extracting the values of these parameters will suffer from new degeneracies and ambiguities. We review such effects and formulate the conditions on the NSI parameters under which the precision measurement of neutrino oscillation parameters can be distorted. Like standard weak interactions, the non-standard interaction can be categorized into two groups: Charged Current (CC) NSI and Neutral Current (NC) NSI. Our focus will bemainly on neutral current NSI because it is possible to build a class of models that give rise to sizeable NC NSI with discernible effects on neutrino oscillation. These models are based on new U(1) gauge symmetry with a gauge boson of mass. 10 MeV. The UV complete model should be of course electroweak invariant which in general implies that along with neutrinos, charged fermions also acquire new interactions on which there are strong bounds. We enumerate the bounds that already exist on the electroweak symmetric models and demonstrate that it is possible to build viable models avoiding all these bounds. In the end, we review methods to test these models and suggest approaches to break the degeneracies in deriving neutrino mass parameters caused by NSI. |
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Address |
[Farzan, Yasaman] Inst Res Fundamental Sci, Sch Phys, Tehran, Iran, Email: mariam@ific.uv.es |
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Frontiers Research Foundation |
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2296-424x |
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WOS:000426198100001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
3502 |
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Author |
Gariazzo, S.; Giunti, C.; Laveder, M.; Li, Y.F. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Updated global 3+1 analysis of short-baseline neutrino oscillations |
Type |
Journal Article |
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Year |
2017 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
06 |
Issue |
6 |
Pages |
135 - 38pp |
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Keywords |
Neutrino Physics; Beyond Standard Model |
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Abstract |
We present the results of an updated fit of short-baseline neutrino oscillation data in the framework of 3+1 active-sterile neutrino mixing. We first consider v(e) and (v) over bar (e) disappearance in the light of the Gallium and reactor anomalies. We discuss the implications of the recent measurement of the reactor (v) over bar (e) spectrum in the NEOS experiment, which shifts the allowed regions of the parameter space towards smaller values of |U-e1|(2). The beta-decay constraints of the Mainz and Troitsk experiments allow us to limit the oscillation length between about 2 cm and 7 m at 3 sigma for neutrinos with an energy of 1 MeV. The corresponding oscillations can be discovered in a model-independent way in ongoing reactor and source experiments by measuring v(e) and (v) over bar (e), disappearance as a function of distance. We then consider the global fit of the data on short-baseline v(mu)((-)) -> v(e)((-)) transitions in the light of the LSND anomaly, taking into account the constraints from v(e)(( )) and v(mu)((-)) disappearance experiments, including the recent data of the MINOS and IceCube experiments. The combination of the NEOS constraints on |U-e4|(2) and the MINOS and IceCube constraints on |U-mu 4|(2) lead to an unacceptable appearance-disappearance tension which becomes tolerable only in a pragmatic fit which neglects the MiniBooNE low-energy anomaly. The minimization of the global chi(2) in the space of the four mixing parameters Delta m(41)(2), |U-e4|(2), |U-mu 4|(2) and |U-4 tau|(2) leads to three allowed regions with narrow Delta m(41)(2) widths at Delta m(41)(2) approximate to 1.7 (best-fit), 1.3 (at 2 sigma), 2.4 (at 3 sigma) eV(2). The effective amplitude of short-baseline v(mu)((-)) -> v(e)((-)) oscillations is limited by 0.00048 less than or similar to sin(2) 2 nu(e mu) less than or similar to 0.0020 at 3 sigma The restrictions of the allowed regions of the mixing parameters with respect to our previous global fits are mainly due to the NEOS constraints. We present a comparison of the allowed regions of the mixing parameters with the sensitivities of ongoing experiments, which show that it is likely that these experiments will determine in a definitive way if the reactor, Gallium and LSND anomalies are due to active-sterile neutrino oscillations or not. |
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Address |
[Gariazzo, S.] Univ Valencia, CSIC, Inst Fis Corpusc, Valencia, Spain, Email: gariazzo@ific.uv.es; |
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Springer |
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1029-8479 |
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Notes |
WOS:000404627200001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
3190 |
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Permanent link to this record |
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Author |
Caputo, A.; Hernandez, P.; Lopez-Pavon, J.; Salvado, J. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
The seesaw portal in testable models of neutrino masses |
Type |
Journal Article |
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Year |
2017 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
06 |
Issue |
6 |
Pages |
112 - 20pp |
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Keywords |
Beyond Standard Model; Neutrino Physics |
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Abstract |
A Standard Model extension with two Majorana neutrinos can explain the measured neutrino masses and mixings, and also account for the matter-antimatter asymmetry in a region of parameter space that could be testable in future experiments. The testability of the model relies to some extent on its minimality. In this paper we address the possibility that the model might be extended by extra generic new physics which we parametrize in terms of a low-energy effective theory. We consider the effects of the operators of the lowest dimensionality, d = 5, and evaluate the upper bounds on the coefficients so that the predictions of the minimal model are robust. One of the operators gives a new production mechanism for the heavy neutrinos at LHC via higgs decays. The higgs can decay to a pair of such neutrinos that, being long-lived, leave a powerful signal of two displaced vertices. We estimate the LHC reach to this process. |
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Address |
[Caputo, A.; Hernandez, P.; Salvado, J.] Univ Valencia, Inst Fis Corpusc, Catedrat Jose Beltran 2, Valencia 46980, Spain, Email: andrea.caputo@cern.ch; |
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Publisher |
Springer |
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Language |
English |
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ISSN |
1029-8479 |
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Notes |
WOS:000404625300005 |
Approved |
no |
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Is ISI |
yes |
International Collaboration ![sorted by International Collaboration field, ascending order (up)](img/sort_asc.gif) |
yes |
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Call Number |
IFIC @ pastor @ |
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3196 |
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