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Double-beta decay is a rare nuclear process in which two neutrons in the nucleus are converted to two protons with the emission of two electrons and two electron anti-neutrinos. We measured the half life of the two-neutrino double-beta…

Nuclear Experiment · Physics 2015-06-23 Mary F. Kidd , James H. Esterline , Sean W. Finch , Werner Tornow

Highly forbidden $\beta$ decays provide a sensitive test to nuclear models in a regime in which the decay goes through high spin-multipole states, similar to the neutrinoless double-$\beta$ decay process. There are only 3 nuclei ($^{50}$V,…

We analyse the effects that different nuclear structure approximations associated with the short range correlations (SRC), finite nucleon size (FNS), higher order terms in the nucleon currents (HOC) and with some nuclear input parameters,…

Nuclear Theory · Physics 2015-06-16 Andrei Neacsu , Sabin Stoica

Two-neutron transfer reactions are studied within the interacting boson model based on the nuclear energy density functional theory. Constrained self-consistent mean-field calculations with the Skyrme energy density functional are performed…

Nuclear Theory · Physics 2019-03-11 K. Nomura , Y. Zhang

We study the continuum version of the two-gap BCS model in (3+1)D within the large-N approximation. We calculate the effective potential of the model which depends on two independent energy gaps $\sigma$ and $\Delta$, where $\sigma$…

Superconductivity · Physics 2023-02-14 Leandro O. Nascimento

Nuclear double $\beta$-decay with two neutrinos is a rare and important process for natural radioactivity of unstable nuclei. The experimental data of nuclear double $\beta^{-}$-decay with two neutrinos are analyzed and a systematic law to…

Nuclear Theory · Physics 2015-06-19 Yuejiao Ren , Zhongzhou Ren

The study of neutrinoless double beta decay has attracted much attention as it can provide valuable information about the mass and the nature of the neutrino. The double beta decay (DBD) itself is also of interest in nuclear physics. While…

Instrumentation and Detectors · Physics 2021-11-18 Swati Thakur , A. Mazumdar , R. Shah , V. Vatsa , V. Nanal , M. S. Pose , Pushpendra P. Singh , P. K. Raina , R. G. Pillay

A search for double beta decays of $^{110}$Pd and $^{102}$Pd into excited states of the daughter nuclides has been performed using three ultra-low background gamma-spectrometry measurements in the Felsenkeller laboratory, Germany, the HADES…

Nuclear Experiment · Physics 2016-11-23 B. Lehnert , E. Andreotti , D. Degering , M. Hult , M. Laubenstein , T. Wester , K. Zuber

Nuclear structures of the atomic nuclei can be theoretically investigated by using nuclear shell model. Generally, a doubly closed-shell nucleus has been considered as inert core and the nucleons outside the core are taken into account in…

Nuclear Theory · Physics 2020-04-14 Serkan Akkoyun , Tuncay Bayram

The Majorana Double Charge Exchange nuclear reaction mechanism represents a powerful and novel scenario to probe the dynamics of the neutrinoless double beta decay. Recent studies presented in this manuscript have highlighted a key feature…

Nuclear Theory · Physics 2026-03-24 Caterina Garofalo , Horst Lenske , Francesco Cappuzzello , Manuela Cavallaro

The proportionality between single charge-exchange reaction cross sections in the forward direction as found, for example from $(p,n)$ and $(^3$He,$t)$ and from $(n,p)$ and $(d,^2$He) reactions, and the Gamow-Teller (GT) strength into the…

Nuclear Theory · Physics 2008-11-26 K. Amos , Amand Faessler , V. Rodin

The leading electronic interactions governing the local physics of the CE phase of half-doped manganites are extracted from correlated ab initio calculations performed on an embedded cluster. The electronic structure of the low-energy…

Strongly Correlated Electrons · Physics 2009-11-13 Roland Bastardis , Coen de Graaf , Nathalie Guihery

Neutrinoless double beta decay, which is a very old and yet elusive process, is reviewed. Its observation will signal that lepton number is not conserved and the neutrinos are Majorana particles. More importantly it is our best hope for…

High Energy Physics - Phenomenology · Physics 2015-06-05 J. D. Vergados , H. Ejiri , F. Simkovic

The knowledge of the nuclear matrix elements for the neutrinoless double beta decay is fundamental for neutrino physics. In this paper, an innovative technique to extract information on the nuclear matrix elements by measuring the cross…

Nuclear Experiment · Physics 2015-11-13 F. Cappuzzello , M. Cavallaro , C. Agodi , M. Bond`ı , D. Carbone , A. Cunsolo , A. Foti

It is possible to employ virtual decay paths, including two-particle transfer, to calculate the nuclear matrix element of neutrinoless double-beta decay under the closure approximation, in addition to the true double-beta path. In the…

Nuclear Theory · Physics 2016-03-02 Jun Terasaki

The prospects of extracting new physics signals in coherent elastic neutrino--nucleus scattering (CE$\nu$NS) processes are limited by the precision with which the underlying nuclear structure physics, embedded in the weak nuclear form…

Nuclear Theory · Physics 2023-04-27 N. Van Dessel , V. Pandey , H. Ray , N. Jachowicz

A new model that includes the time-dependent dynamics of the single-particle (s.p.) motion in conjunction with the macroscopic evolution of the system is proposed for describing the compound nucleus (CN) formation in fusion of heavy nuclei.…

Nuclear Theory · Physics 2009-11-10 Alexis Diaz-Torres

The neutrinoless double beta ($\znbb$) decay is analyzed within the Minimal Supersymmetric Standard Model with explicit R-parity violation (\rp MSSM). We have found new supersymmetric contributions to this process and give the complete set…

High Energy Physics - Phenomenology · Physics 2016-09-01 M. Hirsch , H. V. Klapdor-Kleingrothaus , S. G. Kovalenko

Finding the best model to describe the {\alpha}-decay process is an old and ongoing challenge in nuclear physics. The present work systematically studied {\alpha}-decay half-lives for the favored ground-state-to-ground-state transitions of…

Nuclear Theory · Physics 2017-07-17 O. N. Ghodsi , A. Daei-Ataollah

The decay rate of neutrinoless double beta ($0\nu\beta\beta$) decay contains terms from heavy particle exchange, which lead to dimension-9 (d=9) six fermion operators at low energies. Limits on the coefficients of these operators have been…

High Energy Physics - Phenomenology · Physics 2018-07-23 M. González , M. Hirsch , S. G. Kovalenko