scholarly journals Supergravity can reconcile dark matter with lepton number violating neutrino masses

2007 ◽  
Vol 76 (7) ◽  
Author(s):  
Biswarup Mukhopadhyaya ◽  
Soumitra SenGupta ◽  
Raghavendra Srikanth
Keyword(s):  
Dark Matter ◽  
Lepton Number ◽  
Neutrino Masses ◽  
Lepton Number Violating

scholarly journals Lepton number violating operators with standard model gauge fields: a survey of neutrino masses from 3-loops and their link to dark matter

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Michael Gustafsson ◽  
José Miguel No ◽  
Maximiliano A. Rivera
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Neutrino Mass ◽  
New Physics ◽  
Lepton Number ◽  
Gauge Fields ◽  
Neutrino Masses ◽  
Neutrino Mixing ◽  
Mass Generation ◽  
Lepton Number Violating

Abstract We investigate neutrino mass generation scenarios where the lepton number breaking new physics does not interact with Standard Model (SM) quarks and couples only to the SM right-handed charged lepton chirality. The lowest-order lepton number violating effective operator which describes this framework is a unique dimension nine operator involving SM gauge fields, $$ {\mathcal{O}}_9 $$ O 9 . We find that there are two possible classes of new physics scenarios giving rise to this $$ {\mathcal{O}}_9 $$ O 9 operator. In these scenarios neutrino masses are induced radiatively via dark matter interactions, linking the dark matter to a natural explanation for the smallness of neutrino masses compared to the electroweak scale. We discuss the phenomenology and existing constraints in the different neutrino mass models within each class. In particular, we analyze the important interplay between neutrino mixing and neutrinoless double β-decay in order to predict characteristic signatures and disfavour certain scenarios.

scholarly journals Neutrino masses in lepton number violating mSUGRA

2008 ◽  
Author(s):  
Steve C. H. Kom ◽  
Pyungwon Ko ◽  
Deog Ki Hong
Keyword(s):  
Lepton Number ◽  
Neutrino Masses ◽  
Lepton Number Violating

scholarly journals Baryogenesis and dark matter in U(1) extensions

2017 ◽  
Vol 32 (15) ◽  
pp. 1740005 ◽  
Author(s):  
Wan-Zhe Feng ◽  
Pran Nath
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Lepton Number ◽  
Current Data ◽  
Neutrino Masses ◽  
Neutrino Experiment ◽  
The Standard Model ◽  
Reactor Neutrino ◽  
The Universe ◽  
Neutrino Masses And Mixings

A brief review is given of some recent works where baryogenesis and dark matter have a common origin within the U(1) extensions of the Standard Model (SM) and of the minimal supersymmetric Standard Model (MSSM). The models considered generate the desired baryon asymmetry and the dark matter to baryon ratio. In one model, all of the fundamental interactions do not violate lepton number, and the total [Formula: see text] in the Universe vanishes. In addition, one may also generate a normal hierarchy of neutrino masses and mixings in conformity with the current data. Specifically, one can accommodate [Formula: see text] consistent with the data from Daya Bay reactor neutrino experiment.

scholarly journals CONSTRAINTS OF MIXING ANGLES FROM LEPTON NUMBER VIOLATING PROCESSES

1999 ◽  
Vol 14 (06) ◽  
pp. 433-445 ◽  
Author(s):  
HIROYUKI NISHIURA ◽  
KOUICHI MATSUDA ◽  
TAKESHI FUKUYAMA
Keyword(s):  
Beta Decay ◽  
Neutrinoless Double Beta Decay ◽  
Lepton Number ◽  
Double Beta Decay ◽  
Neutrino Masses ◽  
Mixing Angles ◽  
Left Handed ◽  
Majorana Neutrinos ◽  
Mixing Matrix ◽  
Lepton Number Violating

We discuss the constraints of lepton mixing angles from lepton number violating processes such as neutrinoless double beta decay, μ--e+ conversion and K decay, K-→π+μ-μ- which are allowed only if neutrinos are Majorana particles. The rates of these processes are proportional to the averaged neutrino mass defined by [Formula: see text] in the absence of right-handed weak coupling. Here a, b(j) are flavor(mass) eigenstates and Uaj is the left-handed lepton mixing matrix. We give general conditions imposed on <mν>ab in terms of mi, lepton mixing angles and CP violating phases (three phases in Majorana neutrinos). These conditions are reduced to the constraints among mi, lepton mixing angles and <mν>ab which are irrelevant to the concrete values of CP phases. Given a <mν>ab experimentally, these conditions constrain mi and the lepton mixing angles. Though these constraints are still loose except for neutrinoless double beta decay, they will become helpful through rapid improvements of experiments. By using these constraints we also derive the limits on averaged neutrino masses for μ--e+ conversion and K decay, K-→π+μ-μ-, respectively. We also present the bounds for CP phases in terms of mi, mixing angles and <mν>ab.

scholarly journals Neutrino masses in the lepton number violating MSSM

2006 ◽  
Vol 2006 (08) ◽  
pp. 005-005 ◽  
Author(s):  
Athanasios Dedes ◽  
Steven Rimmer ◽  
Janusz Rosiek
Keyword(s):  
Lepton Number ◽  
Neutrino Masses ◽  
Lepton Number Violating

scholarly journals Scotogenic cobimaximal Dirac neutrino mixing from $$\Delta (27)$$ and $$U(1)_\chi $$

2019 ◽  
Vol 79 (11) ◽  
Author(s):  
Ernest Ma
Keyword(s):  
Dark Matter ◽  
Lepton Number ◽  
Neutrino Masses ◽  
Neutrino Mixing ◽  
Dirac Neutrino

Abstract In the context of $$SU(3)_C \times SU(2)_L \times U(1)_Y \times U(1)_\chi $$SU(3)C×SU(2)L×U(1)Y×U(1)χ, where $$U(1)_\chi $$U(1)χ comes from $$SO(10) \rightarrow SU(5) \times U(1)_\chi $$SO(10)→SU(5)×U(1)χ, supplemented by the non-Abelian discrete $$\Delta (27)$$Δ(27) symmetry for three lepton families, Dirac neutrino masses and their mixing are radiatively generated through dark matter. The gauge $$U(1)_\chi $$U(1)χ symmetry is broken spontaneously. The discrete $$\Delta (27)$$Δ(27) symmetry is broken softly and spontaneously. Together, they result in two residual symmetries, a global $$U(1)_L$$U(1)L lepton number and a dark symmetry, which may be $$Z_2$$Z2, $$Z_3$$Z3, or $$U(1)_D$$U(1)D depending on what scalar breaks $$U(1)_\chi $$U(1)χ. Cobimaximal neutrino mixing, i.e. $$\theta _{13} \ne 0$$θ13≠0, $$\theta _{23} = \pi /4$$θ23=π/4, and $$\delta _{CP} = \pm \pi /2$$δCP=±π/2, may also be obtained.

scholarly journals Accessible lepton-number-violating models and negligible neutrino masses

2019 ◽  
Vol 100 (7) ◽  
Author(s):  
André de Gouvêa ◽  
Wei-Chih Huang ◽  
Johannes König ◽  
Manibrata Sen
Keyword(s):  
Lepton Number ◽  
Neutrino Masses ◽  
Lepton Number Violating

scholarly journals AFFLECK–DINE LEPTOGENESIS IN THE RADIATIVE NEUTRINO MASS MODEL

2011 ◽  
Vol 26 (06) ◽  
pp. 995-1009 ◽  
Author(s):  
H. HIGASHI ◽  
T. ISHIMA ◽  
D. SUEMATSU
Keyword(s):  
Dark Matter ◽  
Neutrino Mass ◽  
Baryon Number ◽  
Lepton Number ◽  
Neutrino Masses ◽  
Alternative Possibility ◽  
Mass Model ◽  
Neutrino Mass Models ◽  
Baryon Number Asymmetry ◽  
The Universe

Radiative neutrino mass models have interesting features, which make it possible to relate neutrino masses to the existence of dark matter. However, the explanation of the baryon number asymmetry in the universe seems to be generally difficult as long as we suppose leptogenesis based on the decay of thermal right-handed neutrinos. Since right-handed neutrinos are assumed to have masses of O(1) TeV in these models, they are too small to generate the sufficient lepton number asymmetry. Here we consider Affleck–Dine leptogenesis in a radiative neutrino mass model by using a famous flat direction LHu as an alternative possibility. The constraint on the reheating temperature could be weaker than the ordinary models. The model explains all the origin of the neutrino masses, the dark matter, and also the baryon number asymmetry in the universe.

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