Neutrino Oscillations and Neutrino Mass

2015 ◽  
pp. 167-184 ◽  
Author(s):  
Bogdan Povh ◽  
Klaus Rith ◽  
Christoph Scholz ◽  
Frank Zetsche ◽  
Werner Rodejohann
Keyword(s):  
Neutrino Mass ◽  
Neutrino Oscillations

scholarly journals NEUTRINO OSCILLATIONS AND THE EXACT PARITY MODEL

1994 ◽  
Vol 09 (02) ◽  
pp. 169-179 ◽  
Author(s):  
R. FOOT
Keyword(s):  
Neutrino Mass ◽  
General Result ◽  
Neutrino Oscillations ◽  
Mass Matrix ◽  
Atmospheric Neutrino ◽  
Solar Neutrinos ◽  
Specific Model ◽  
Neutrino Mixing ◽  
Mixing Angles ◽  
Significant Deficit

We re-examine neutrino oscillations in exact parity models. Previously it was shown in a specific model that large neutrino mixing angles result. We show here that this is a general result of neutrino mixing in exact parity models provided that the neutrino mass matrix is real. In this case, the effects of neutrino mixing in exact parity models is such that the probability of a given weak eigenstate remaining in that eigenstate averages to less than half when averaged over many oscillations. This result is interesting in view of the accumulating evidence for a significant deficit in the number of solar neutrinos. It may also be of relevance to the atmospheric neutrino anomaly.

scholarly journals Experiments on lepton and baryon stability and oscillation phenomena

1982 ◽  
Vol 304 (1482) ◽  
pp. 105-134 ◽  
Keyword(s):  
Neutrino Mass ◽  
Neutrino Oscillations ◽  
Nuclear Reactors ◽  
Solar And Atmospheric Neutrinos ◽  
High Energy ◽  
Lepton Number ◽  
Atmospheric Neutrinos ◽  
Nucleon Decay ◽  
Number Conservation ◽  
Experimental Approaches

The various experiments on lepton number conservation and on nucleon stability currently being done or prepared are reviewed, and their relative merits compared and discussed. The first part of the paper is devoted to the measurement of the neutrino mass and to the present limits on the conservation of the total lepton number and of the various lepton flavours. The existing results and future projects on the strictly connected problems of neutrino oscillations at nuclear reactors, pion factories and high energy accelerators will be also discussed, together with oscillations of solar and atmospheric neutrinos. The second part of the paper concerns the few results and the m any planned detectors on nucleon decay with particular emphasis on the problems of background radioactivity and of the variety of experimental approaches. Oscillation experiments on neutron—antineutron oscillations at nuclear reactors are also considered.

A THEORETICAL PATTERN FOR NEUTRINO AND STERILE-NEUTRINO OSCILLATIONS

1989 ◽  
Vol 04 (06) ◽  
pp. 535-541
Author(s):  
JIANG LIU
Keyword(s):  
Neutrino Mass ◽  
Neutrino Oscillations ◽  
Sterile Neutrino ◽  
Mass Term ◽  
Grand Unification ◽  
Heavy Neutrino ◽  
Theoretical Pattern

A theoretical pattern for the MSW oscillation that takes νeL into a sterile particle is discussed. The required small neutrino mass is induced by a seesaw formula, in which the heavy neutrino mass term is of the order of the grand unification scale. Realizations of our scheme are illustrated by a simple SU (2)L × U (1)Y model.

scholarly journals ON THE ABSOLUTE VALUE OF THE NEUTRINO MASS

2011 ◽  
Vol 26 (21) ◽  
pp. 1555-1559 ◽  
Author(s):  
DRAGAN SLAVKOV HAJDUKOVIC
Keyword(s):  
Neutrino Mass ◽  
Neutrino Oscillations ◽  
Upper Bounds ◽  
Neutrino Mixing ◽  
Absolute Value ◽  
The Absolute ◽  
Good Agreement

The neutrino oscillations probabilities depend on mass squared differences; in the case of three-neutrino mixing, there are two independent differences, which have been measured experimentally. In order to calculate the absolute masses of neutrinos, we have conjectured a third relation, in the form of a sum of squared masses. The calculated masses look plausible and are in good agreement with the upper bounds coming from astrophysics.

Calculation of the Branching Ratio of the Process μ→ 3e in the Hung Model

2012 ◽  
Vol 490-495 ◽  
pp. 315-318
Author(s):  
Jian Ping Bu ◽  
Bei Jia
Keyword(s):  
Neutrino Mass ◽  
Neutrino Oscillations ◽  
Branching Ratio ◽  
Branching Ratios ◽  
Electroweak Scale ◽  
Seesaw Mechanism ◽  
Lepton Flavor ◽  
Flavor Structure

Rich phenomenology is generally expected if the heavy neutrinos responsible via the seesaw mechanism for the small neutrino mass observed in neutrino oscillations are not much heavier than the electroweak scale. A model with this feature built in has been suggested recently by Hung. We analyze the lepton flavor structure in gauge interactions and calculate the branching ratios for the decays due to the gauge interactions in this model.

scholarly journals New developments in neutrino physics

2020 ◽  
Vol 9 ◽  
pp. 40
Author(s):  
W. M. Alberico ◽  
S. M. Bilenky
Keyword(s):  
Neutrino Physics ◽  
Neutrino Mass ◽  
Neutrino Oscillations ◽  
Phenomenological Analysis ◽  
Neutrino Mixing ◽  
New Developments ◽  
Massive Neutrinos

A review of the problems of neutrino mass, mixing and oscillations is given. Possible phenomenological schemes of neutrino mixing are discussed. The most important consequences of neutrino mixing-neutrino oscillations are considered in some detail. The data of atmospheric, solar and LSND experiments are discussed. The results of phenomenological analysis of the data under the assumption of the mixing of three and four massive neutrinos are briefly presented.

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