scholarly journals Ordinary Muon Capture for Double Beta Decay and Anti-Neutrino Nuclear Responses

2021 ◽  
Vol 8 ◽  
Author(s):  
Izyan Hazwani Hashim ◽  
Hiroyasu Ejiri
Keyword(s):  
Beta Decay ◽  
Nuclear Physics ◽  
Double Beta Decay ◽  
Muon Capture ◽  
Muon Neutrino ◽  
Charge Exchange Reaction ◽  
Weak Boson ◽  
A Charge ◽  
Nuclear Responses ◽  
Beta Decays

This is a brief review on ordinary muon capture (OMC) experiments at Research Center for Nuclear Physics (RCNP) Osaka University relevant for the study of double beta decays (DBDs) and astro anti-neutrinos (neutrino) nuclear responses. OMC usually leaves the nucleus in highly excited unbound state. OMC is a charge exchange reaction via the charged weak boson as given by (μ,vμ) reactions with μ and vμ being the muon and muon neutrino. Subjects discussed include 1) unique features of OMC for studying DBDs and astro anti-neutrino (neutrino) nuclear responses, 2) experiments of OMCs on 100Mo and natMo to study neutrino nuclear responses for DBDs and astro anti-neutrinos, 3) impact of the OMC results on neutrino nuclear responses for DBDs and astro anti-neutrinos. Remarks and perspectives on OMC experiments for neutrino nuclear responses are briefly described.

scholarly journals Nuclear responses for double beta decay and muon capture

2019 ◽  
Author(s):  
Lotta Jokiniemi ◽  
Jouni Suhonen ◽  
Hiro Ejiri
Keyword(s):  
Beta Decay ◽  
Double Beta Decay ◽  
Muon Capture ◽  
Nuclear Responses

scholarly journals Neutrinoless Double-Beta Decay

2012 ◽  
Vol 2012 ◽  
pp. 1-38 ◽  
Author(s):  
Andrea Giuliani ◽  
Alfredo Poves
Keyword(s):  
Beta Decay ◽  
Particle Physics ◽  
Nuclear Physics ◽  
Experimental Situation ◽  
Neutrinoless Double Beta Decay ◽  
Majorana Neutrino ◽  
Double Beta Decay ◽  
Point Of View ◽  
The Status ◽  
Majorana Neutrino Mass

This paper introduces the neutrinoless double-beta decay (the rarest nuclear weak process) and describes the status of the research for this transition, both from the point of view of theoretical nuclear physics and in terms of the present and future experimental scenarios. Implications of this phenomenon on crucial aspects of particle physics are briefly discussed. The calculations of the nuclear matrix elements in case of mass mechanisms are reviewed, and a range for these quantities is proposed for the most appealing candidates. After introducing general experimental concepts—such as the choice of the best candidates, the different proposed technological approaches, and the sensitivity—we make the point on the experimental situation. Searches running or in preparation are described, providing an organic presentation which picks up similarities and differences. A critical comparison of the adopted technologies and of their physics reach (in terms of sensitivity to the effective Majorana neutrino mass) is performed. As a conclusion, we try to envisage what we expect round the corner and at a longer time scale.

scholarly journals NEUTRINO-LESS DOUBLE BETA DECAY AND PARTICLE PHYSICS

2011 ◽  
Vol 20 (09) ◽  
pp. 1833-1930 ◽  
Author(s):  
WERNER RODEJOHANN
Keyword(s):  
Beta Decay ◽  
Particle Physics ◽  
Nuclear Physics ◽  
Double Beta Decay ◽  
Standard Interpretation ◽  
Sterile Neutrinos ◽  
Physics Potential ◽  
Majorana Neutrinos ◽  
Alternative Processes ◽  
Extensive List

We review the particle physics aspects of neutrino-less double beta decay. This process can be mediated by light massive Majorana neutrinos (standard interpretation) or by something else (non-standard interpretations). The physics potential of both interpretations is summarized and the consequences of future measurements or improved limits on the half-life of neutrino-less double beta decay are discussed. We try to cover all proposed alternative realizations of the decay, including light sterile neutrinos, supersymmetric or left-right symmetric theories, Majorons, and other exotic possibilities. Ways to distinguish the mechanisms from one another are discussed. Experimental and nuclear physics aspects are also briefly touched, alternative processes to double beta decay are discussed, and an extensive list of references is provided.

scholarly journals IS IT POSSIBLE TO CONSERVE ELECTRIC CHARGE WITHOUT SEPARATELY CONSERVING BARYONIC NUMBER AND LEPTONIC NUMBER?

2008 ◽  
Vol 17 (08) ◽  
pp. 1591-1603 ◽  
Author(s):  
UNG CHAN TSAN
Keyword(s):  
Beta Decay ◽  
Strong Interaction ◽  
Baryon Number ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
The Other ◽  
Baryonic Number ◽  
The One ◽  
A Charge ◽  
Baryon Number Conservation

Charges that are sources of fields must be universally conserved. Any quantity which is proved to be violated in certain circumstance cannot be a source of field. To account for the asymmetry of our Universe baryon number A has to be violated; thus A cannot be a charge. We postulate a new interaction, matter creation, with (A–L) as charge and Z * as messenger. Conservation of (A–L) instead of (3A–L) suggested by Sakharov is deduced on the one hand from observational facts (our Universe is both material and neutral) and on the other hand from the generalized Gell-Mann and Nishijima formula. Conservation of (A–L) forbids neutrinoless double beta decay and neutron antineutron oscillations. The union of four interactions — electromagnetism, the MC interaction, the weak interaction and the strong interaction — considered as the product U(1) × U(1) × SU(2) × SU(3) would account for available experimental and observational data. Observation of processes violating baryon number conservation would be of great interest in falsifying this suggestion.

scholarly journals Double Beta Decay to Excited States of Daughter Nuclei

Universe ◽  
2020 ◽  
Vol 6 (12) ◽  
pp. 239
Author(s):  
Pierluigi Belli ◽  
Rita Bernabei ◽  
Fabio Cappella ◽  
Vincenzo Caracciolo ◽  
Riccardo Cerulli ◽  
...  
Keyword(s):  
Excited States ◽  
Beta Decay ◽  
Half Life ◽  
Double Beta Decay ◽  
Experimental Techniques ◽  
Lower Limits ◽  
Beta Decays

In this paper we review results obtained in the searches of double beta decays to excited states of the daughter nuclei and illustrate the related experimental techniques. In particular, we describe in some detail the only two cases in which the transition has been observed; that is the 2β−(0+→01+) decay of 100Mo and 150Nd nuclides. Moreover, the most significant results in terms of lower limits on the half-life are also summarized.

scholarly journals Recent Developments and Results on Double Beta Decays with Crystal Scintillators and HPGe Spectrometry

Universe ◽  
2018 ◽  
Vol 4 (12) ◽  
pp. 147 ◽  
Author(s):  
Alessandro Di Marco ◽  
Alexander Barabash ◽  
Pierluigi Belli ◽  
Rita Bernabei ◽  
Roman Boiko ◽  
...  
Keyword(s):  
Beta Decay ◽  
National Laboratory ◽  
Double Beta Decay ◽  
Low Background ◽  
Hpge Detectors ◽  
Recent Developments ◽  
Deep Underground ◽  
Beta Decays

Recent developments, results, and perspectives arising from double beta decay experiments at the Gran Sasso National Laboratory (LNGS) of the INFN by using HPGe detectors and crystal scintillators and by exploiting various approaches and different isotopes are summarized. The measurements here presented have been performed in the experimental set-ups of the DAMA collaboration. These setups are optimized for low-background studies and operate deep underground at LNGS. The presented results are of significant value to the field, and the sensitivity achieved for some of the considered isotopes is one of the best available to date.

μCR42β: Muon capture rates for double-beta decay

2006 ◽  
Vol 56 (5) ◽  
pp. 453-457 ◽  
Author(s):  
V. Egorov ◽  
V. Brudanin ◽  
K. Gromov ◽  
A. Klinskih ◽  
M. Shirchenko ◽  
...  
Keyword(s):  
Beta Decay ◽  
Double Beta Decay ◽  
Muon Capture ◽  
Capture Rates
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