Prediction on neutrino Dirac and Majorana phases and absolute mass scale from the CKM matrix

We study the existence of one/two texture zeros or one/two vanishing minors in the neutrino mass matrix with μτ symmetry. In the basis where the charged lepton mass matrix and the Dirac neutrino mass matrix are diagonal, the one/two zeros or one/two vanishing minors on the right-handed Majorana mass matrix having μτ symmetry will propagate via seesaw mechanism as one/two vanishing minors or one/two texture zeros in the neutrino mass matrix with μτ symmetry respectively. It is found that only five such texture structures of the neutrino mass matrix are phenomenologically viable. For tribimaximal mixing, these texture structures reduce the number of free parameters to one. Interesting predictions are obtained for the effective Majorana mass Mee, the absolute mass scale and the Majorana-type CP violating phases.

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The Use of Low Temperature Detectors for Direct Measurements of the Mass of the Electron Neutrino

Advances in High Energy Physics ◽

10.1155/2016/9153024 ◽

2016 ◽

Vol 2016 ◽

pp. 1-41 ◽

Cited By ~ 14

Author(s):

A. Nucciotti

Keyword(s):

Neutrino Physics ◽

Low Temperature ◽

Particle Physics ◽

High Energy ◽

Mass Scale ◽

Electron Neutrino ◽

High Energy Resolution ◽

Low Temperature Detectors ◽

Absolute Mass ◽

Direct Measurements

Recent years have witnessed many exciting breakthroughs in neutrino physics. The detection of neutrino oscillations has proved that neutrinos are massive particles, but the assessment of their absolute mass scale is still an outstanding challenge in today particle physics and cosmology. Since low temperature detectors were first proposed for neutrino physics experiments in 1984, there has been tremendous technical progress: today this technique offers the high energy resolution and scalability required to perform competitive experiments challenging the lowest electron neutrino masses. This paper reviews the thirty-year effort aimed at realizing calorimetric measurements with sub-eV neutrino mass sensitivity using low temperature detectors.

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NEUTRINOLESS DOUBLE BETA DECAY

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194512006289 ◽

2012 ◽

Vol 12 ◽

pp. 80-89

Author(s):

OLIVIERO CREMONESI

Keyword(s):

Beta Decay ◽

Present Status ◽

Neutrinoless Double Beta Decay ◽

Mass Scale ◽

Present Knowledge ◽

Double Beta Decay ◽

Neutrino Masses ◽

Mixing Parameters ◽

Absolute Mass ◽

Practical Tool

Neutrinoless double beta decay (ββ(0ν)) is presently the only practical tool for probing the character of neutrinos. In case neutrinos are Majorana particles ββ(0ν) can provide also fundamental informations on their absolute mass scale. The present status of experiments searching for ββ(0ν) is reviewed and the most relevant results discussed. A possibility to observe ββ(0ν) at a neutrino mass scale in the range 10-50 meV looks possible according to our present knowledge of the neutrino masses and mixing parameters. A review of the future projects and of the most relevant parameters contributing to the experimental sensitivity iss finally outlined.

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Probing the Absolute Mass Scale of Neutrinos

10.2172/1030789 ◽

2011 ◽

Author(s):

◽

Keyword(s):

Mass Scale ◽

Absolute Mass ◽

The Absolute

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Current Direct Neutrino Mass Experiments

Advances in High Energy Physics ◽

10.1155/2013/293986 ◽

2013 ◽

Vol 2013 ◽

pp. 1-39 ◽

Cited By ~ 167

Author(s):

G. Drexlin ◽

V. Hannen ◽

S. Mertens ◽

C. Weinheimer

Keyword(s):

Neutrino Mass ◽

Mass Scale ◽

Background Rate ◽

A Value ◽

Independent Information ◽

Absolute Mass ◽

The Status ◽

Institute Of Technology ◽

Under Construction ◽

Katrin Experiment

In this contribution, we review the status and perspectives of direct neutrino mass experiments, which investigate the kinematics ofβ-decays of specific isotopes (3H,187Re,163Ho) to derive model-independent information on the averaged electron (anti)neutrino mass. After discussing the kinematics ofβ-decay and the determination of the neutrino mass, we give a brief overview of past neutrino mass measurements (SN1987a-ToF studies, Mainz and Troitsk experiments for3H, cryobolometers for187Re). We then describe the Karlsruhe Tritium Neutrino (KATRIN) experiment currently under construction at Karlsruhe Institute of Technology, which will use the MAC-E-Filter principle to push the sensitivity down to a value of 200 meV (90% C.L.). To do so, many technological challenges have to be solved related to source intensity and stability, as well as precision energy analysis and low background rate close to the kinematic endpoint of tritiumβ-decay at 18.6 keV. We then review new approaches such as the MARE, ECHO, and Project8 experiments, which offer the promise to perform an independent measurement of the neutrino mass in the sub-eV region. Altogether, the novel methods developed in direct neutrino mass experiments will provide vital information on the absolute mass scale of neutrinos.

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Neutrino mixings and leptonicCPviolation from CKM matrix and Majorana phases

Physical Review D ◽

10.1103/physrevd.75.033007 ◽

2007 ◽

Vol 75 (3) ◽

Cited By ~ 25

Author(s):

Sanjib Kumar Agarwalla ◽

M. K. Parida ◽

R. N. Mohapatra ◽

G. Rajasekaran

Keyword(s):

Ckm Matrix ◽

Majorana Phases

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SPONTANEOUS CP-VIOLATION WITHIN THE FRAMEWORK OF SU(2)L×SU(2)R×U(1) MODELS WITH MANIFEST CP INVARIANCE REVISITED

International Journal of Modern Physics A ◽

10.1142/s0217751x92002878 ◽

1992 ◽

Vol 07 (25) ◽

pp. 6325-6337

Author(s):

P. BASAK ◽

A. DATTA

Keyword(s):

Perturbation Theory ◽

Dipole Moment ◽

Cp Violation ◽

Electric Dipole Moment ◽

Electric Dipole ◽

Mass Scale ◽

Second Order ◽

Ckm Matrix ◽

Three Generations ◽

Cp Invariance

The case of spontaneous CP violation for large mt is reanalyzed and the validity of perturbation theory is checked by calculating the second order corrections to the CKM matrix. For a very large right-handed mass scale, the perturbation theory breaks down in some cases. While in other cases consistent with perturbation theory, the model predicts too large ε′/ε. Two possible alternatives are: (a) models with low right-handed mass scales with three generations and (b) models with heavy right-handed mass scales with four generations, avoid the above problems and values of ε′/ε and electric dipole moment of the neutron consistent with present data are obtained.

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Probing the absolute mass scale of neutrinos

10.1063/1.3700574 ◽

2012 ◽

Author(s):

J. A. Formaggio ◽

KATRIN Collaboration

Keyword(s):

Mass Scale ◽

Absolute Mass ◽

The Absolute

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RECENT PROGRESS IN DOUBLE BETA DECAY

Modern Physics Letters A ◽

10.1142/s0217732312300091 ◽

2012 ◽

Vol 27 (07) ◽

pp. 1230009 ◽

Cited By ~ 73

Author(s):

STEVEN R. ELLIOTT

Keyword(s):

Beta Decay ◽

Recent Progress ◽

Mass Scale ◽

Lepton Number ◽

Double Beta Decay ◽

Critical Question ◽

Number Conservation ◽

Absolute Mass ◽

The Future ◽

The Absolute

At least one neutrino has a mass of about 50 meV or larger. However, the absolute mass scale for the neutrino remains unknown. Studies of double beta decay offer hope for determining the absolute mass scale. Furthermore, the critical question "Is the neutrino its own antiparticle?" is unanswered. In particular, zero-neutrino double beta decay (0 νββ) can address the issues of lepton number conservation, the particle–antiparticle nature of the neutrino, and its mass. A summary of the recent progress in 0 νββ, and the related technologies will be discussed in the context of the future 0 νββ program.

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The MAJORANA DEMONSTRATOR Neutrinoless Double-Beta Decay Experiment

Advances in High Energy Physics ◽

10.1155/2014/365432 ◽

2014 ◽

Vol 2014 ◽

pp. 1-18 ◽

Cited By ~ 113

Author(s):

N. Abgrall ◽

E. Aguayo ◽

F. T. Avignone ◽

A. S. Barabash ◽

F. E. Bertrand ◽

...

Keyword(s):

South Dakota ◽

Rare Decay ◽

Neutrinoless Double Beta Decay ◽

Mass Scale ◽

Double Beta Decay ◽

Research Facility ◽

Absolute Mass ◽

Sanford Underground Research Facility ◽

Active Shielding ◽

Double Beta Decay Experiment

The MajoranaDemonstratorwill search for the neutrinoless double-beta(ββ0ν)decay of the isotopeGe with a mixed array of enriched and natural germanium detectors. The observation of this rare decay would indicate that the neutrino is its own antiparticle, demonstrate that lepton number is not conserved, and provide information on the absolute mass scale of the neutrino. The Demonstratoris being assembled at the 4850-foot level of the Sanford Underground Research Facility in Lead, South Dakota. The array will be situated in a low-background environment and surrounded by passive and active shielding. Here we describe the science goals of the Demonstratorand the details of its design.

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