On Prospects for Exploration of Supersymmetry in Double Beta Decay Experiments

We analyze constraints on the parameters of the Rp violating supersymmetry ([Formula: see text] SUSY) which can be extracted from non-observation of the neutrinoless nuclear double beta decay (0νββ) at a given half-life lower bound. Our analysis covers a large class of phenomenologically viable [Formula: see text] SUSY models. We introduce special characteristics: the SUSY sensitivity of a ββ-decaying isotope and the SUSY reach of a 0νββ-experiment. The former provides a physical criterion for a selection of the most promising isotopes for SUSY searches and the latter gives a measure of success for a 0νββ-experiment in exploring the [Formula: see text] SUSY parameter space. On this basis we discuss prospects for exploration of supersymmetry in various 0νββ-experiments.

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Neutrinoless double beta decay in minimal left–right symmetric model with universal seesaw

International Journal of Modern Physics A ◽

10.1142/s0217751x18501981 ◽

2018 ◽

Vol 33 (35) ◽

pp. 1850198 ◽

Cited By ~ 2

Author(s):

Debasish Borah ◽

Arnab Dasgupta ◽

Sudhanwa Patra

Keyword(s):

Beta Decay ◽

Parameter Space ◽

Half Life ◽

Mass Matrix ◽

Neutrinoless Double Beta Decay ◽

New Physics ◽

Double Beta Decay ◽

Model Parameters ◽

Symmetric Model ◽

Neutrino Mixing

We present a detailed discussion on neutrinoless double beta decay [Formula: see text] within left–right symmetric models based on the gauge symmetry of type [Formula: see text] as well as [Formula: see text] where fermion masses including that of neutrinos are generated through a universal seesaw mechanism. We find that one or more of the right-handed neutrinos could be as light as a few keV if left–right symmetry breaking occurs in the range of a few TeV to 100 TeV. With such light right-handed neutrinos, we perform a detailed study of new physics contributions to [Formula: see text] and constrain the model parameters from the latest experimental bound on such a rare decay process. We find that the new physics contribution to [Formula: see text] in such a scenario, particularly the heavy–light neutrino mixing diagrams, can individually saturate the existing experimental bounds, but their contributions to total [Formula: see text] half-life cancel each other due to unitarity of the total [Formula: see text] mass matrix. The effective contribution to half-life therefore, arises from the purely left and purely right neutrino and gauge boson mediated diagrams. We find that the parameter space saturating the [Formula: see text] bounds remains allowed from the latest experimental bounds on charged lepton flavor violating decays like [Formula: see text]. We finally include the bounds from cosmology and supernova to constrain the parameter space of the model.

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Sensitivity of a tonne-scale NEXT detector for neutrinoless double-beta decay searches

Journal of High Energy Physics ◽

10.1007/jhep08(2021)164 ◽

2021 ◽

Vol 2021 (8) ◽

Author(s):

◽

C. Adams ◽

V. Álvarez ◽

L. Arazi ◽

I. J. Arnquist ◽

...

Keyword(s):

High Pressure ◽

Beta Decay ◽

Parameter Space ◽

Half Life ◽

Neutrinoless Double Beta Decay ◽

Double Beta Decay ◽

Neutrino Masses ◽

Neutrino Experiment ◽

Order Of Magnitude ◽

Better Than

Abstract The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta (0νββ) decay of 136Xe using high-pressure xenon gas TPCs with electroluminescent amplification. A scaled-up version of this technology with about 1 tonne of enriched xenon could reach in less than 5 years of operation a sensitivity to the half-life of 0νββ decay better than 1027 years, improving the current limits by at least one order of magnitude. This prediction is based on a well-understood background model dominated by radiogenic sources. The detector concept presented here represents a first step on a compelling path towards sensitivity to the parameter space defined by the inverted ordering of neutrino masses, and beyond.

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A measurement of the double beta decay half-life of 48Ca

Nuclear Physics B - Proceedings Supplements ◽

10.1016/0920-5632(96)00242-3 ◽

1996 ◽

Vol 48 (1-3) ◽

pp. 213-215 ◽

Cited By ~ 1

Author(s):

A. Balysh ◽

A. De Silva ◽

V.I. Lebedev ◽

K. Lou ◽

M.K. Moe ◽

...

Keyword(s):

Beta Decay ◽

Half Life ◽

Double Beta Decay

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Half-life expectations for neutrinoless double beta decay in standard and nonstandard scenarios

Physical Review D ◽

10.1103/physrevd.96.055019 ◽

2017 ◽

Vol 96 (5) ◽

Cited By ~ 5

Author(s):

Shao-Feng Ge ◽

Werner Rodejohann ◽

Kai Zuber

Keyword(s):

Beta Decay ◽

Half Life ◽

Neutrinoless Double Beta Decay ◽

Double Beta Decay

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GERDA results and the future perspectives for the neutrinoless double beta decay search using 76Ge

International Journal of Modern Physics A ◽

10.1142/s0217751x18430042 ◽

2018 ◽

Vol 33 (09) ◽

pp. 1843004 ◽

Cited By ~ 5

Author(s):

◽

M. Agostini ◽

A. M. Bakalyarov ◽

M. Balata ◽

I. Barabanov ◽

...

Keyword(s):

Phase I ◽

Beta Decay ◽

Phase Ii ◽

Half Life ◽

Liquid Argon ◽

Neutrinoless Double Beta Decay ◽

Double Beta Decay ◽

Second Phase ◽

Inverted Hierarchy ◽

Phase Phase

The GERmanium Detector Array (GERDA) is a low background experiment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN designed to search for the rare neutrinoless double beta decay ([Formula: see text]) of [Formula: see text]Ge. In the first phase (Phase I) of the experiment, high purity germanium diodes were operated in a “bare” mode and immersed in liquid argon. The overall background level of [Formula: see text] was a factor of ten better than those of its predecessors. No signal was found and a lower limit was set on the half-life for the [Formula: see text] decay of [Formula: see text]Ge [Formula: see text] yr (90% CL), while the corresponding median sensitivity was [Formula: see text] yr (90% CL). A second phase (Phase II) started at the end of 2015 after a major upgrade. Thanks to the increased detector mass and performance of the enriched germanium diodes and due to the introduction of liquid argon instrumentation techniques, it was possible to reduce the background down to [Formula: see text]. After analyzing 23.2 kg[Formula: see text]⋅[Formula: see text]yr of these new data no signal was seen. Combining these with the data from Phase I a stronger half-life limit of the [Formula: see text]Ge [Formula: see text] decay was obtained: [Formula: see text] yr (90% CL), reaching a sensitivity of [Formula: see text] yr (90% CL). Phase II will continue for the collection of an exposure of 100 kg[Formula: see text]yr. If no signal is found by then the GERDA sensitivity will have reached [Formula: see text] yr for setting a 90% CL. limit. After the end of GERDA Phase II, the flagship experiment for the search of [Formula: see text] decay of [Formula: see text]Ge will be LEGEND. LEGEND experiment is foreseen to deploy up to 1-ton of [Formula: see text]Ge. After ten years of data taking, it will reach a sensitivity beyond 10[Formula: see text] yr, and hence fully cover the inverted hierarchy region.

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An improved half-life limit of the double beta decay of 94Zr into the excited state of 94Mo

Journal of Physics G Nuclear and Particle Physics ◽

10.1088/1361-6471/aac7ed ◽

2018 ◽

Vol 45 (7) ◽

pp. 075104 ◽

Cited By ~ 1

Author(s):

N Dokania ◽

D Degering ◽

B Lehnert ◽

V Nanal ◽

K Zuber

Keyword(s):

Excited State ◽

Beta Decay ◽

Half Life ◽

Double Beta Decay

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Results from the Cuore Experiment †

Universe ◽

10.3390/universe5010010 ◽

2019 ◽

Vol 5 (1) ◽

pp. 10 ◽

Cited By ~ 2

Author(s):

Alessio Caminata ◽

Douglas Adams ◽

Chris Alduino ◽

Krystal Alfonso ◽

Frank Avignone ◽

...

Keyword(s):

Beta Decay ◽

Energy Resolution ◽

Half Life ◽

Precise Measurement ◽

Region Of Interest ◽

Neutrinoless Double Beta Decay ◽

Double Beta Decay ◽

Effective Energy ◽

Β Decay ◽

Compact Structure

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrinoless double beta decay that has been able to reach the 1-ton scale. The detector consists of an array of 988 TeO 2 crystals arranged in a cylindrical compact structure of 19 towers, each of them made of 52 crystals. The construction of the experiment was completed in August 2016 and the data taking started in spring 2017 after a period of commissioning and tests. In this work we present the neutrinoless double beta decay results of CUORE from examining a total TeO 2 exposure of 86.3 kg yr , characterized by an effective energy resolution of 7.7 keV FWHM and a background in the region of interest of 0.014 counts / ( keV kg yr ) . In this physics run, CUORE placed a lower limit on the decay half-life of neutrinoless double beta decay of 130 Te > 1.3 · 10 25 yr (90% C.L.). Moreover, an analysis of the background of the experiment is presented as well as the measurement of the 130 Te 2 ν β β decay with a resulting half-life of T 1 / 2 2 ν = [ 7.9 ± 0.1 ( stat . ) ± 0.2 ( syst . ) ] × 10 20 yr which is the most precise measurement of the half-life and compatible with previous results.

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Search for Double Beta Decay of 106Cd with an Enriched 106CdWO4 Crystal Scintillator in Coincidence with CdWO4 Scintillation Counters

Universe ◽

10.3390/universe6100182 ◽

2020 ◽

Vol 6 (10) ◽

pp. 182

Author(s):

Pierluigi Belli ◽

R. Bernabei ◽

V.B. Brudanin ◽

F. Cappella ◽

V. Caracciolo ◽

...

Keyword(s):

Electron Capture ◽

Beta Decay ◽

Ground State ◽

Half Life ◽

Double Beta Decay ◽

Cadmium Tungstate ◽

Positron Emission ◽

Double Electron ◽

Theoretical Predictions ◽

Crystal Scintillator

Studies on double beta decay processes in 106Cd were performed by using a cadmium tungstate scintillator enriched in 106Cd at 66% (106CdWO4) with two CdWO4 scintillation counters (with natural Cd composition). No effect was observed in the data that accumulated over 26,033 h. New improved half-life limits were set on the different channels and modes of the 106Cd double beta decay at level of limT1/2∼1020−1022 yr. The limit for the two neutrino electron capture with positron emission in 106Cd to the ground state of 106Pd, T1/22νECβ+≥2.1×1021 yr, was set by the analysis of the 106CdWO4 data in coincidence with the energy release 511 keV in both CdWO4 counters. The sensitivity approaches the theoretical predictions for the decay half-life that are in the range T1/2∼1021−1022 yr. The resonant neutrinoless double-electron capture to the 2718 keV excited state of 106Pd is restricted at the level of T1/20ν2K≥2.9×1021 yr.

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