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相关论文: ${2\nu}$ Double Beta Decay within the Relativistic…

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We compute $\mathcal O(\alpha^2 Z)$ radiative corrections to superallowed $\beta$ decays with a heavy-particle effective field theory that systematically describes the interactions of low-energy ultrasoft photons with nuclei. We calculate…

高能物理 - 唯象学 · 物理学 2025-11-27 Òscar L. Crosas , Emanuele Mereghetti

The decay rates of $Q \bar Q$ mesons ($Q \varepsilon {c, b}$) are studied in the NRQCD formalism in terms of their short distance and long distance coefficients. The long distance coefficients are obtained through phenomenological potential…

高能物理 - 唯象学 · 物理学 2008-12-18 Ajay Kumar Rai , Bhavin Patel , P C Vinodkumar

The iterative quasi-particle-random-phase approximation (QRPA) method we previously developed to accurately calculate properties of individual nuclear states is extended so that it can be applied for nuclei with odd numbers of neutrons and…

核理论 · 物理学 2014-06-03 B. G. Carlsson , J. Toivanen

In the present work the sensitivity of the QRPA calculation results to a realistic residual interaction is analyzed in the framework of the approach of Refs. \cite{Rum98,Rodin05}. Both Gamow-Teller (GT) and Fermi (F) \bb-decay amplitudes…

核理论 · 物理学 2011-08-11 Vadim Rodin , Amand Faessler

We present a seminal calculation of the nuclear matrix element for the two-neutrino double beta ($2\nu\beta\beta$) decay of ${}^{48}\text{Ca} \rightarrow {}^{48}\text{Ti}$ using a post-Hartree-Fock (HF) Density Functional Theory-based…

核理论 · 物理学 2025-06-17 Jan Miśkiewicz , Maciej Konieczka , Wojciech Satuła

We perform a systematic study of all the traditional neutron magic nuclei with $N$ = 8, 20, 28, 50, 82, and 126, from the neutron drip line to the proton drip line. We adopt the deformed relativistic mean field (RMF) theory as our framework…

核理论 · 物理学 2007-05-23 L. S. Geng , H. Toki , J. Meng

A relativistic mean field description of collective excitations of atomic nuclei is studied in the framework of a fully self-consistent relativistic random phase approximation (RRPA). In particular, results of RRPA calculations of multipole…

核理论 · 物理学 2009-11-07 Zhong-yu Ma , A. Wandelt , Nguyen Van Giai , D. Vretenar , P. Ring , Li-gang Cao

We perform a self-consistent relativistic RPA calculation for the isobaric analogue and Gamow-Teller resonances based on relativistic mean field theory results for the ground states of $^{48}$Ca, $^{90}$Zr and $^{208}$Pb. We use the…

核理论 · 物理学 2009-10-31 C. De Conti , A. P. Galeao , F. Krmpotic

The nuclear wobbling motion in the Lu region is studied by the microscopic cranked mean-field plus RPA method. The Woods-Saxon potential is used as a mean-field with a new parameterization which gives reliable description of rapidly…

核理论 · 物理学 2009-11-11 Takuya Shoji , Yoshifumi R. Shimizu

Ruling out the inverted neutrino hierarchy with neutrinoless double beta decay experiments is possible if a limit on the effective mass below the minimal theoretically possible value is reached. We stress that this lower limit depends…

高能物理 - 唯象学 · 物理学 2011-07-05 Alexander Dueck , Werner Rodejohann , Kai Zuber

As double heavy quarkonia, charmonium and bottomonium are generally considered to have small relativistic corrections and can be treated using nonrelativistic models. However, this is not always the case. In this paper, we employ the…

高能物理 - 唯象学 · 物理学 2026-03-03 Su-Yan Pe , Wei Li , Wen-Yuan Ke , Yi-Yi Rui , Qiang Li , Guo-Li Wang

Several approaches to photonuclear reactions, based on the time-dependent density-functional theory, have been developed recently. The standard linearization leads to the random-phase approximation (RPA) or the quasiparticle-random-phase…

The uncertainty in the nuclear matrix elements (NMEs) of $0\nu\beta\beta$ decay for $^{76}$Ge, $^{82}$Se, $^{128}$Te, $^{130}$Te, and $^{136}$Xe in the self-consistent quasiparticle random phase approximation (QRPA) method is investigated…

核理论 · 物理学 2023-02-10 W. -L. Lv , Y. -F. Niu , D. -L. Fang , J. -M. Yao , C. -L. Bai , J. Meng

A model many-body Hamiltonian describing an heterogenous system of paired protons and paired neutrons and interacting among themselves through monopole particle-hole and monopole particle-particle interactions is used to study the double…

核理论 · 物理学 2008-11-26 A. A. Raduta , O. Haug , F. Simkovic , Amand Faessler

We explore the relation between the nuclear matrix elements of neutrinoless double-beta ($0\nu\beta\beta$) decay and two other processes: double Gamow-Teller (DGT) and double-magnetic dipole (M1M1) transitions, with focus on medium-mass to…

核理论 · 物理学 2023-04-26 Lotta Jokiniemi , Javier Menéndez

The $\alpha$-decay half-lives of superheavy nuclei with $100 \leq Z \leq 120$ are comprehensively analyzed using the axially deformed relativistic mean field (RMF) formalism for the NL3$^*$ parameter set. We employ RMF binding energies to…

核理论 · 物理学 2024-03-06 Nishu Jain , M. Bhuyan , Raj Kumar

Very recent inelastic $\alpha$-scattering data on the isoscalar monopole and dipole strength distributions in $^{56}$Fe, $^{58}$Ni, and $^{60}$Ni are analyzed in the relativistic quasiparticle random-phase approximation (RQRPA) with the…

核理论 · 物理学 2009-11-11 N. Paar , D. Vretenar , T. Niksic , P. Ring

The self-consistent proton-neutron quasiparticle random phase approximation approach is employed to calculate $\beta$-decay half-lives of neutron-rich even-even nuclei with $8\leqslant Z \leqslant 30$. A newly proposed nonlinear…

核理论 · 物理学 2016-03-23 Z. Y. Wang , Z. M. Niu , Y. F. Niu , J. Y. Guo

Neutrinoless Double Beta Decay ($0\nu\beta\beta$) is presently the only known experiment to distinguisch between Dirac neutrinos, different from their antiparticles, and Majorana neutrinos, identical with their antiparticles. In addition…

核理论 · 物理学 2015-05-27 Amand Faessler

Using the finite temperature quasi-particle random phase approximation (FTQRPA) on the basis of finite temperature Skyrme-Hartree-Fock + BCS method, we study $\beta^-$-decay half-lives for even-even neutron magic nuclei with N=82 in a…

核理论 · 物理学 2010-01-11 F. Minato , K. Hagino