scholarly journals Upper Bound on the Scale of Majorana-Neutrino Mass Generation

2001 ◽  
Vol 86 (2) ◽  
pp. 212-215 ◽  
Author(s):  
F. Maltoni ◽  
J. M. Niczyporuk ◽  
S. Willenbrock
Keyword(s):  
Neutrino Mass ◽  
Upper Bound ◽  
Majorana Neutrino ◽  
Mass Generation ◽  
Neutrino Mass Generation ◽  
Majorana Neutrino Mass

scholarly journals UPPER BOUND ON THE SCALE OF MAJORANA-NEUTRINO MASS GENERATION

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 709-711 ◽  
Author(s):  
J. M. NICZYPORUK
Keyword(s):  
Neutrino Mass ◽  
Upper Bound ◽  
Planck Scale ◽  
Majorana Neutrino ◽  
Grand Unification ◽  
Neutrino Masses ◽  
Mass Generation ◽  
Model Independent ◽  
Neutrino Mass Generation ◽  
Majorana Neutrino Mass

We derive a model-independent upper bound on the scale of Majorana-neutrino mass generation. The upper bound is [Formula: see text], where v ≃246 GeV is the weak scale and mν is the Majorana-neutrino mass. For neutrino masses implied by neutrino oscillation experiments, all but one of these bounds are less than the Planck scale, and they are all within a few orders of magnitude of the grand-unification scale.

scholarly journals Effective Neutrino Masses from Four Flavor Neutrino Mixing Matrix

2021 ◽  
Author(s):  
Bipin Singh Koranga ◽  
Vivek Kumar Nautiyal
Keyword(s):  
Neutrino Oscillation ◽  
Neutrino Mass ◽  
Upper Bound ◽  
Majorana Neutrino ◽  
Neutrino Masses ◽  
Neutrino Mixing ◽  
Mixing Parameters ◽  
Normal Mass ◽  
Mixing Matrix ◽  
Majorana Neutrino Mass

AbstractWe consider the four neutrino oscillation that accommodate the all neutrino oscillation data. We consider the range of the corresponding mixing parameters by the result of neutrino oscillation experiments. Implicaion of the neutrino oscillation search for the neutrino mass square difference and mixing are discussed. We determine the possible values of the effective majorana neutrino mass $|<m>|=|{\sum }_{j}U_{ej}^{2}m_{j}|$ | < m > | = | ∑ j U e j 2 m j | in the four neutrino scenario. In the four-neutrino scheme there is an upper bound on | < m > | of the normal mass order is 2.0074eV for α = 0∘,β = 0∘andγ = 0∘. In the case of inverted mass order the upper bound on | < m > | is 2.0069eV for α = 0∘,β = 0∘andγ = 0∘.

scholarly journals Testing radiative neutrino mass generation at the LHC

2007 ◽  
Vol 2007 (08) ◽  
pp. 022-022 ◽  
Author(s):  
Chian-Shu Chen ◽  
Chao-Qiang Geng ◽  
John N Ng ◽  
Jackson M.S Wu
Keyword(s):  
Neutrino Mass ◽  
Mass Generation ◽  
Neutrino Mass Generation

scholarly journals Exploding operators for Majorana neutrino masses and beyond

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
John Gargalionis ◽  
Raymond R. Volkas
Keyword(s):  
Neutrino Mass ◽  
Model Building ◽  
Dominant Role ◽  
New Physics ◽  
Majorana Neutrino ◽  
Effective Field ◽  
Tree Level ◽  
Mass Generation ◽  
Neutrino Mass Models ◽  
Almost All

Abstract Building UV completions of lepton-number-violating effective operators has proved to be a useful way of studying and classifying models of Majorana neutrino mass. In this paper we describe and implement an algorithm that systematises this model-building procedure. We use the algorithm to generate computational representations of all of the tree-level completions of the operators up to and including mass-dimension 11. Almost all of these correspond to models of radiative neutrino mass. Our work includes operators involving derivatives, updated estimates for the bounds on the new-physics scale associated with each operator, an analysis of various features of the models, and a look at some examples. We find that a number of operators do not admit any completions not also generating lower-dimensional operators or larger contributions to the neutrino mass, ruling them out as playing a dominant role in the neutrino-mass generation. Additionally, we show that there are at most five models containing three or fewer exotic multiplets that predict new physics that must lie below 100 TeV. Accompanying this work we also make available a searchable database containing all of our results and the code used to find the completions. We emphasise that our methods extend beyond the study of neutrino-mass models, and may be useful for generating completions of high-dimensional operators in other effective field theories. Example code: ref. [37].

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