NSR Query Results
Output year order : Descending NSR database version of April 25, 2024. Search: Author = O.Civitarese Found 190 matches. Showing 1 to 100. [Next]2023CI02 Universe 9, 275 (2023) The Neutrino Mass Problem: From Double Beta Decay to Cosmology
doi: 10.3390/universe9060275
2023YE01 Nucl.Phys. A1029, 122566 (2023) T.Yepez-Martinez, P.O.Hess, O.Civitarese BCS solutions and effective quark energies of the QCD Hamiltonian in the Coulomb gauge
doi: 10.1016/j.nuclphysa.2022.122566
2022PE08 Int.J.Mod.Phys. E31, 2250038 (2022) Constraining the axion mass from the nonobservation of Oνββ decay
doi: 10.1142/S0218301322500380
2021MA81 Phys.Rev. C 104, L061304 (2021) A.O.Macchiavelli, O.Civitarese, S.M.Lenzi, R.J.Liotta, D.R.Bes "Piston" mechanism in a time-dependent two-level model NUCLEAR STRUCTURE 19N; analyzed one-proton knockout reaction on 19N. populating unbound state in 18C, in the framework of a time-dependent two-level model. 18C; calculated wave functions of g.s. and the first two 2+ states; quantified validity of the so-called 'piston' mechanism (proposed by 2018Re06: Phys. Rev. Lett. 120, 152504) in terms of time scales involved in the process, reaction time, period of oscillation between the mixed states, and the lifetime of the excited unbound state in 18C.
doi: 10.1103/PhysRevC.104.L061304
2021SA21 Int.J.Mod.Phys. E30, 2150028 (2021) M.M.Saez, K.J.Fushimi, M.E.Mosquera, O.Civitarese Limits on active-sterile neutrino mixing parameters using heavy nuclei abundances
doi: 10.1142/S0218301321500282
2020FU06 Int.J.Mod.Phys. E29, 2050072 (2020) K.Fushimi, M.E.Mosquera, O.Civitarese MSSM WIMPs-Nucleon cross-section for Ex < 500 GeV
doi: 10.1142/S021830132050072X
2020ME05 Phys.Rev. C 101, 035806 (2020) B.E.Melendez, M.E.Mosquera, O.Civitarese Cross sections of ultrahigh-energy neutrinos: Comparison with ICE-CUBE data
doi: 10.1103/PhysRevC.101.035806
2020MO30 Phys.Rev. C 102, 025803 (2020) Cross section of ultrahigh-energy neutrinos: Estimation of the uncertanties due to parton distribution functions NUCLEAR REACTIONS 12C(ν, ν'), (ν, X), (ν-bar, ν-bar'), (ν-bar, X), E=0.3-32000 TeV; calculated σ(E) for charged and neutral currents, and total neutrino scattering σ(E) by included the uncertainties of the parton distribution function. Comparison with the IceCube experimental data.
doi: 10.1103/PhysRevC.102.025803
2019BE10 Nucl.Phys. A983, 53 (2019) The contribution of the pairing field to the transfer of two nucleons NUCLEAR STRUCTURE A=110-124; calculated two-nucleon pairing transfer amplitude vs distance of the centers, moment of inertia for pairing rotational motion using radial-dependent BCS approach; deduced its mass dependence.
doi: 10.1016/j.nuclphysa.2018.12.026
2019CI04 Phys.Rev. C 99, 065504 (2019) Multipole decomposition of the rate of muon-to-electron (μ → e-) conversion in 208Pb NUCLEAR STRUCTURE 208Pb; calculated levels, J, π, radial nuclear density, and radial wave function, nuclear matrix elements, and multipole decomposition of muon to electron conversion in the 208Pb nucleus, by considering the most general effective Lagrangian responsible for the lepton-flavor violation, and by performing a diagonalization of the δ-force interaction in the space of particle-hole pairs for neutrons and protons for the level spectrum of 208Pb.
doi: 10.1103/PhysRevC.99.065504
2018KO29 Phys.Rev. C 98, 065504 (2018) J.Kostensalo, J.Suhonen, O.Civitarese Muon-electron lepton-flavor-violating transitions: Shell-model calculations of transitions in 27Al NUCLEAR STRUCTURE 27Al; calculated levels, J, π, single-particle occupation factors for active proton and neutron orbitals, vector and axial matrix elements of muon-to-electron conversion. Large-scale shell-model calculations of muon-to-electron lepton-flavor violating transitions in 27Al target. Comparison with experimental level structure of 27Al.
doi: 10.1103/PhysRevC.98.065504
2018YE02 Eur.Phys.J. A 54, 22 (2018) T.Yepez-Martinez, O.Civitarese, P.O.Hess Non-perturbative RPA-method implemented in the Coulomb gauge QCD Hamiltonian: From quarks and gluons to baryons and mesons
doi: 10.1140/epja/i2018-12424-7
2017CI04 Phys.Rev. C 95, 054307 (2017) O.Civitarese, M.Reboiro, D.Tielas Applicability of the Richardson method in a complex-energy basis: Fermionic case
doi: 10.1103/PhysRevC.95.054307
2017GU17 Phys.Rev. C 96, 014319 (2017) V.Guadilla, A.Algora, J.L.Tain, J.Agramunt, D.Jordan, A.Montaner-Piza, S.E.A.Orrigo, B.Rubio, E.Valencia, J.Suhonen, O.Civitarese, J.Aysto, J.A.Briz, A.Cucoanes, T.Eronen, M.Estienne, M.Fallot, L.M.Fraile, E.Ganioglu, W.Gelletly, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, V.Kolhinen, J.Koponen, M.Lebois, T.Martinez, M.Monserrate, I.Moore, E.Nacher, H.Penttila, I.Pohjalainen, A.Porta, J.Reinikainen, M.Reponen, S.Rinta-Antila, K.Rytkonen, T.Shiba, V.Sonnenschein, A.A.Sonzogni, V.Vedia, A.Voss, J.N.Wilson, A.-A.Zakari-Issoufou Experimental study of 100Tc β decay with total absorption γ-ray spectroscopy RADIOACTIVITY 100Tc(β-)[from 100Mo(p, n), E=8 MeV]; measured Eγ, Iγ, β spectrum using a vase-shaped plastic scintillator, βγ-coin, total absorption TAGS γ spectra using Decay Total Absorption γ-ray Spectrometer (DTAS), IGISOL-IV mass separator and JYFLTRAP Penning trap at the University of Jyvaskyla cyclotron facility; deduced β-intensity distribution extracted from the TAGS analysis, β feedings to g.s. and excited states of 100Ru, logft. Comparison with high-resolution decay data in the ENSDF database at NNDC-BNL, and with quasiparticle random-phase approximation calculations. Benchmark for calculations of the double β decay of 100Mo.
doi: 10.1103/PhysRevC.96.014319
2017MO36 Phys.Rev. C 96, 045802 (2017) Time variation of fundamental constants in nonstandard cosmological models
doi: 10.1103/PhysRevC.96.045802
2017RE07 Phys.Scr. 92, 094004 (2017) M.Reboiro, O.Civitarese, R.Ramirez, D.Tielas Use of discrete Wigner functions in the study of a hybrid dissipative system
doi: 10.1088/1402-4896/aa8079
2016CI06 Int.J.Mod.Phys. E25, 1650081 (2016) O.Civitarese, J.Suhonen, K.Zuber Combining data from high-energy pp-reactions and neutrinoless double-beta decay: Limits on the mass of the right-handed boson RADIOACTIVITY 76Ge, 136Xe(2β-); analyzed available data; deduced limits on the mass of the right-handed boson.
doi: 10.1142/S0218301316500816
2016CI07 Phys.Rev. C 94, 054603 (2016) Multipole decomposition of the cross section of the neutrino-lead scattering process 208Pb(g.s.)(ν, ν')208Pb NUCLEAR REACTIONS 208Pb(ν, ν'), E=150 MeV; calculated contribution of neutral-current part of the neutrino-lead interaction to the cross section as a function of neutrino energy and for different eignestates of 208Pb. NUCLEAR STRUCTURE 208Pb; calculated levels, J, π using δ-force interaction, and compared with experimental values.
doi: 10.1103/PhysRevC.94.054603
2014CI01 Phys.Rev. C 89, 044319 (2014) Strength of Jπ = 1 + Gamow-Teller and isovector spin monopole transitions in double-β-decay triplets RADIOACTIVITY 76Ge, 82Se, 100Mo, 116Cd, 128,130Te, 136Xe(2β-); calculated pairing scaling factors, pairing gaps, distribution of Gamow-Teller (GT-) and isovector spin monopole transition strengths (IVSM-), particle-hole and particle-particle interactions in the 1+ channel, energy of the first pnQRPA eigenvalue, energetics, intensities and amplitudes of the GT-, GT+, IVSM-, IVSM+ modes, cumulative strengths. Realistic pnQRPA calculations of the GT and IVSM excitations in double-odd intermediate mass nuclei 76As, 82Br, 100Tc, 116In, 128,130I, 136Cs. Relevance to (p, n) strengths in the 10-20 MeV excitation region.
doi: 10.1103/PhysRevC.89.044319
2014SU06 Nucl.Phys. A924, 1 (2014) Single and double beta decays in the A=100, A=116 and A=128 triplets of isobars RADIOACTIVITY 100Mo, 100Tc, 100Ru, 116Cd, 116In, 116Sn, 128Te, 128I, 128Xe(β-);100Mo, 116Cd, 128Te(2β-); calculated mean-field orbitals proton orbitals energy, pairing, β decay, 2β decay nuclear matrix elements, gA coupling constant, B(GT), effective strength function using pnQRPA. Compared with other calculations.
doi: 10.1016/j.nuclphysa.2014.01.004
2013CI01 Nucl.Phys. A898, 1 (2013) Nuclear structure constrains on resonant energies: A solution of the cosmological 7Li problem? NUCLEAR REACTIONS 7Be(d, pα), (n, p), (α, γ), E not given (low); calculated freeze-out temperature, resonance energy, 7Li, Be cosmic abundance using semi-analytical solution of balance equations.
doi: 10.1016/j.nuclphysa.2012.11.012
2013SU19 Phys.Lett. B 725, 153 (2013) Probing the quenching of gA by single and double beta decays RADIOACTIVITY 100Mo, 116Cd, 128Te(2β-); calculated nuclear matrix elements, decay parameters. Proton-neutron quasiparticle random-phase approximation exploiting realistic effective interactions in very large single-particle bases.
doi: 10.1016/j.physletb.2013.06.042
2012BE25 Phys.Rev. C 86, 024314 (2012) D.R.Bes, O.Civitarese, J.Suhonen Schematic and realistic model calculations of the isovector spin monopole excitations in 116In NUCLEAR REACTIONS 116Cd(p, n)116In, 116Sn(n, p)116In, E not given; calculated Gamow-Teller (GT) and isovector spin monopole (IVSM) strength distributions of 1+ excitations; deduced mixing between GT and IVSM modes, and contribution to 2νββ decay of 116Cd at and beyond the Gamow-Teller giant resonance (GTGR) region of energies.
doi: 10.1103/PhysRevC.86.024314
2012CI04 Phys.Rev. C 86, 024602 (2012) Analyticity of the time dependence of resonance poles: Solving the Friedrichs model with a time-dependent interaction
doi: 10.1103/PhysRevC.86.024602
2012CI06 J.Phys.:Conf.Ser. 387, 012007 (2012) Nuclear and weak interaction aspects of neutrinoless double beta decay: recent results
doi: 10.1088/1742-6596/387/1/012007
2012SU12 J.Phys.(London) G39, 085105 (2012) Double-beta-decay nuclear matrix elements in the QRPA framework RADIOACTIVITY 74Se, 96Ru, 102Pd, 106Cd, 112Sn, 136Ce, 144Sm, 152Gd, 156Dy, 162Er, 168Yb(2EC), 70Zn, 86Kr, 94Zr, 104Ru, 110Pd, 124Sn, 76Ge, 82Se, 96Zr, 116Cd, 100Mo, 128,130Te, 136Xe(2β-); calculated nuclear matrix elements. QRPA framework.
doi: 10.1088/0954-3899/39/8/085105
2012SU24 J.Phys.(London) G39, 124005 (2012) Review of the properties of the 0νβ-β- nuclear matrix elements RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 128,130Te, 136Xe(2β-); calculated neutrinoless nuclear matrix elements. pnQRPA, IBA-2, ISM(J) methods.
doi: 10.1088/0954-3899/39/12/124005
2011MO31 Phys.Rev. C 84, 065803 (2011) Constraints on active-sterile neutrino mixing from primordial abundances NUCLEAR STRUCTURE 2H, 4He, 7Li; calculated primordial abundance using a modified version of Kawano's code by including mixing between active and sterile neutrinos.
doi: 10.1103/PhysRevC.84.065803
2010BE02 Phys.Rev. C 81, 014315 (2010) Matrix elements for the ground-state to ground-state 2νβ-β- decay of Te isotopes in a hybrid model RADIOACTIVITY 128,130Te(2β-); calculated matrix elements for ground state to ground state two-neutrino double-β decay within a formalism that describes interactions between neutrons in a superfluid phase and protons in a normal phase. Comparison with experimental data.
doi: 10.1103/PhysRevC.81.014315
2010CI02 Nucl.Phys. A846, 157 (2010) O.Civitarese, M.A.Moline, M.E.Mosquera Cosmological bounds to the variation of the Higgs vacuum expectation value: BBN constraints
doi: 10.1016/j.nuclphysa.2010.06.011
2010SU29 Nucl.Phys. A847, 207 (2010) Effects of orbital occupancies and spin-orbit partners on 0νββ-decay rates RADIOACTIVITY 76Ge, 82Se, 128,130Te, 136Xe(2β); calculated single-particle energies, nuclear matrix elements for neutrinoless 2β-decay. Comparison of various models and data.
doi: 10.1016/j.nuclphysa.2010.08.003
2010YE03 Phys.Rev. C 81, 045204 (2010) T.Yepez-Martinez, P.O.Hess, A.P.Szczepaniak, O.Civitarese Solvable model for many-quark systems in QCD Hamiltonians
doi: 10.1103/PhysRevC.81.045204
2008BE23 Phys.Rev. C 78, 014317 (2008) Isospin-spin excitations in the A = 58 mass region: The 58Ni(3He, t)58Cu reaction NUCLEAR REACTIONS 58Ni(3He, t), E not given; calculated GT matrix elements.A=52-59; analyzed levels, J, π, configurations. Perturbation theory.
doi: 10.1103/PhysRevC.78.014317
2008CI03 Int.J.Mod.Phys. E17, 493 (2008) O.Civitarese, S.J.Landau, M.E.Mosquera Double beta decay rates as test of the time variation of fundamental constants
doi: 10.1142/S0218301308009847
2008CI04 Int.J.Mod.Phys. E17, 351 (2008) Study of the compatibility of LSND and WMAP data
doi: 10.1142/S0218301308006156
2008CI05 Phys.Rev. C 77, 045806 (2008) Testing primordial abundances with sterile neutrinos NUCLEAR STRUCTURE 2H, 3,4He, 7Li; calculated abundances, big-bang model. Comparison with experimental data.
doi: 10.1103/PhysRevC.77.045806
2008CI06 Phys.Rev. C 78, 064308 (2008) O.Civitarese, R.J.Liotta, M.E.Mosquera Effects of resonant and continuum states on the neutrino-nucleus cross section NUCLEAR REACTIONS 208Pb(ν, e-), E<200 MeV; calculated σ, level energies, multipolarities.
doi: 10.1103/PhysRevC.78.064308
2008SU17 Phys.Lett. B 668, 277 (2008) Effects of orbital occupancies on the neutrinoless ββ matrix element of 76Ge RADIOACTIVITY 76As(β-); calculated log ft. compared results to data.76Ge(2β-); calculated nuclear matrix elements using the QRPA formalism.
doi: 10.1016/j.physletb.2008.08.056
2007BA33 Phys.Rev. C 75, 044316 (2007) A.Ballesteros, O.Civitarese, F.J.Herranz, M.Reboiro Generalized rotational Hamiltonians from nonlinear angular momentum algebras
doi: 10.1103/PhysRevC.75.044316
2007CI06 Phys.Rev. C 76, 024303 (2007) O.Civitarese, J.G.Hirsch, A.Mariano, M.Reboiro Testing approximations beyond the proton-neutron quasiparticle random phase approximation
doi: 10.1103/PhysRevC.76.024303
2007KO34 Phys.Lett. B 647, 128 (2007) M.Kortelainen, O.Civitarese, J.Suhonen, J.Toivanen Short-range correlations and neutrinoless double beta decay RADIOACTIVITY 48Ca, 76Ge(2β-); calculated multipole and total 0ν2β-decay matrix elements. Shell model and quasi-particle RPA.
doi: 10.1016/j.physletb.2007.01.054
2006CI01 Phys.Rev. C 73, 034306 (2006) O.Civitarese, H.B.Geyer, M.Reboiro Dyson boson mapping of effective bi-fermion Hamiltonians
doi: 10.1103/PhysRevC.73.034306
2006CI02 Czech.J.Phys. 56, 447 (2006) Neutrinoless ββ decay and the electron neutrino mass RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe(2β-); analyzed 0νββ-decay matrix elements, neutrino mass limits.
doi: 10.1007/s10582-006-0107-5
2006CI03 Int.J.Mod.Phys. E15, 1273 (2006) The Friedrichs-Model with Fermion-Boson couplings
doi: 10.1142/S0218301306004776
2006PA22 Czech.J.Phys. 56, 481 (2006) P.Papakonstantinou, J.Wambach, O.Civitarese, T.S.Kosmas The role of the continuum and the spurious 1- transitions in incoherent μ--e- conversion rate calculations NUCLEAR REACTIONS 40Ca, 208Pb(μ-, e), E at rest; calculated conversion rates, strength distributions. Self-consistent continuum RPA, Skyrme interactions.
doi: 10.1007/s10582-006-0112-8
2005BA62 Phys.Rev. C 72, 014305 (2005) A.Ballesteros, O.Civitarese, M.Reboiro Nonstandard q-deformed realizations of the harmonic oscillator
doi: 10.1103/PhysRevC.72.014305
2005CI02 Phys.Rev. C 71, 14318 (2005) O.Civitarese, M.Reboiro, J.G.Hirsch Test of consistency of the so-called fully renormalized quasiparticle random phase approximation
doi: 10.1103/PhysRevC.71.014318
2005CI05 Phys.Lett. B 626, 80 (2005) Universal features of the nuclear matrix elements governing the mass sector of the 0νββ decay RADIOACTIVITY 76Ge, 82Se, 100Mo, 116Cd(2β-); analyzed multipole contributions; deduced 0ν-accompanied 2β-decay matrix elements.
doi: 10.1016/j.physletb.2005.08.107
2005CI06 Nucl.Phys. A761, 313 (2005) Extracting information on the 0νββ decays from the 2νββ decays RADIOACTIVITY 76Ge, 82Se, 100Mo, 116Cd(2β-); calculated 0νββ- and2νββ-decay matrix elements. Quasiparticle RPA, multipole decomposition.
doi: 10.1016/j.nuclphysa.2005.07.017
2004BE03 Nucl.Phys. A732, 49 (2004) Isospin-symmetry violation. Collective treatment of the I.A.S. NUCLEAR STRUCTURE 208Pb, 208Bi; calculated analog states energies, Fermi transition intensities, isospin symmetry violation effects.
doi: 10.1016/j.nuclphysa.2003.12.008
2004BE33 Nucl.Phys. A741, 60 (2004) The coupling between the IAS and the IMS
doi: 10.1016/j.nuclphysa.2004.06.019
2004CI04 Phys.Rep. 396, 41 (2004) Physical and mathematical aspects of Gamow states
doi: 10.1016/j.physrep.2004.03.001
2004CI06 Yad.Fiz. 67, 1228 (2004); Phys.Atomic Nuclei 67, 1206 (2004) Neutrino Masses, Nuclear Matrix Elements, and the Oνββ Decay of 76Ge RADIOACTIVITY 76Ge(2β-); analyzed neutrino mass data; deduced 0ν-accompanied 2β decay matrix elements, T1/2 lower limit.
doi: 10.1134/1.1772461
2004NU02 Phys.Rev. C 70, 025201 (2004) M.Nunez, S.Lerma, P.O.Hess, S.Jesgarz, O.Civitarese, M.Reboiro Modeling pentaquark and heptaquark states
doi: 10.1103/PhysRevC.70.025201
2004NU03 Phys.Rev. C 70, 035208 (2004) M.V.Nunez, S.H.Lerma, P.O.Hess, S.Jesgarz, O.Civitarese, M.Reboiro Schematic model for QCD. III. Hadronic states
doi: 10.1103/PhysRevC.70.035208
2003BA93 Phys.Rev. C 68, 044307 (2003) A.Ballesteros, O.Civitarese, M.Reboiro Correspondence between the q-deformed harmonic oscillator and finite range potentials
doi: 10.1103/PhysRevC.68.044307
2003BE20 Yad.Fiz. 66, 466 (2003); Phys.Atomic Nuclei 66, 438 (2003) Symmetry Violations in Nuclear Hamiltonians and Their Consequences for Electroweak Decays
doi: 10.1134/1.1563701
2003CI01 Eur.Phys.J. A 16, 353 (2003) O.Civitarese, J.Suhonen, H.Ejiri Perturbative analysis of the 2νββ decays of 100Mo and 116Cd RADIOACTIVITY 100Mo, 116Cd(2β-); calculated 2ν-accompanied 2β-decay matrix elements. Perturbative approach, quasiparticle RPA.
doi: 10.1140/epja/i2002-10100-3
2003CI05 Nucl.Phys. A729, 867 (2003) Light-neutrino mass spectrum, nuclear matrix elements, and the observability of neutrinoless ββ decay RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 124Sn, 128,130Te, 136Xe, 150Nd(2β); analyzed 0ν-accompanied 2β-decay data, neutrino mass limits. Observability of decay discussed.
doi: 10.1016/j.nuclphysa.2002.10.004
2003JE03 Phys.Rev. C 67, 055210 (2003) S.Jesgarz, S.Lerma, P.O.Hess, O.Civitarese, M.Reboiro Schematic model for QCD. II. Finite temperature regime
doi: 10.1103/PhysRevC.67.055210
2003LE09 Phys.Rev. C 67, 055209 (2003) S.Lerma, S.Jesgarz, P.O.Hess, O.Civitarese, M.Reboiro Schematic model for QCD. I. Low energy meson states
doi: 10.1103/PhysRevC.67.055209
2002BB05 Phys.Rev. C 66, 064317 (2002) A.Ballesteros, O.Civitarese, F.J.Herranz, M.Reboiro Fermion-boson interactions and quantum algebras
doi: 10.1103/PhysRevC.66.064317
2002BE38 Nucl.Phys. A705, 297 (2002) Collective Motion in Iso- and Gauge-Spaces Application to 2νββ-Decay Transitions RADIOACTIVITY 76Ge(2β-); calculated 2ν-accompanied 2β-decay Gamow-Teller transition matrix elements.
doi: 10.1016/S0375-9474(02)00655-3
2002BE43 Czech.J.Phys. 52, 481 (2002) The Calculation of 2νββ Matrix Elements within the Collective Description
doi: 10.1023/A:1015301125199
2002BE44 Czech.J.Phys. 52, 495 (2002) Spurious Center of Mass Effects in Electroweak Decays
doi: 10.1023/A:1015353109269
2002HI06 Phys.Lett. 534B, 57 (2002) J.G.Hirsch, O.Castanos, P.O.Hess, O.Civitarese Selection Rules in the ββ Decay of Deformed Nuclei RADIOACTIVITY 154Sm, 160Gd, 170Er, 176Yb, 232Th, 244Pu(2β-); calculated 2ν- and 0ν-accompanied 2β-decay T1/2, deformation effects.
doi: 10.1016/S0370-2693(02)01593-9
2002HI09 Czech.J.Phys. 52, 513 (2002) J.G.Hirsch, O.Castanos, P.O.Hess, V.E.Ceron, O.Civitarese Double-Beta Decay in Deformed Nuclei RADIOACTIVITY 146,148,150Nd, 160Gd, 186W, 192Os, 238U(2β-); 156Dy, 162Er, 168Yb(2EC); calculated 0ν- and 2ν-accompanied 2β-decay T1/2. Pseudo-SU(3) model, deformed nuclei.
doi: 10.1023/A:1015357210178
2002HI12 Phys.Rev. C66, 015502 (2002) J.G.Hirsch, O.Castanos, P.O.Hess, O.Civitarese Theoretical Description of Double β Decay of 160Gd RADIOACTIVITY 160Gd(2β-); calculated 0ν- and 2ν-accompanied 2β decay matrix elements, T1/2. Pseudo-SU(3) model with pairing interaction.
doi: 10.1103/PhysRevC.66.015502
2002HI13 Eur.Phys.J. A 14, 355 (2002) J.G.Hirsch, P.O.Hess, O.Civitarese The Use of Coherent States in the Variational Treatment of Proton-Neutron Interactions
doi: 10.1140/epja/i2002-10029-5
2002LE28 Phys.Rev. C66, 045207 (2002) S.Lerma, S.Jesgarz, P.O.Hess, O.Civitarese, M.Reboiro Schematic model for QCD at finite temperature
doi: 10.1103/PhysRevC.66.045207
2001BE14 Phys.Rev. C63, 044323 (2001) Removal of Spurious Center of Mass Effects in Nuclear Many-Body Systems
doi: 10.1103/PhysRevC.63.044323
2001CI01 Phys.Rev. C63, 034323 (2001) Gamow-Teller Transitions at Finite Temperatures in the Extended Quasiparticle Random Phase Approximation NUCLEAR STRUCTURE 106Cd; calculated Gamow-Teller transition strength distribution. Extended quasiparticle RPA, finite temperature blocking effects.
doi: 10.1103/PhysRevC.63.034323
2001CI05 Eur.Phys.J. A 11, 263 (2001) O.Civitarese, F.Montani, M.Reboiro Application of the Dyson Boson Expansion Method to the Treatment of the Pairing Force
doi: 10.1007/s100500170063
2001CI06 Phys.Rev. C64, 054317 (2001) O.Civitarese, M.Reboiro, S.Jesgarz, P.O.Hess Coherent States and the Calculation of Nuclear Partition Functions
doi: 10.1103/PhysRevC.64.054317
2001CI07 Phys.Rev. C64, 057305 (2001) O.Civitarese, R.J.Liotta, T.Vertse Temperature Dependent BCS-Gap Equations in the Continuum NUCLEAR STRUCTURE Z=50-112; calculated quasiparticle energies, pair gaps for N=50, 114. 106Ba, 204Th; calculated pair gap vs temperature. Suitability of BCS method near proton drip line discussed.
doi: 10.1103/PhysRevC.64.057305
2001CI08 Phys.Rev. C64, 064312 (2001) Theoretical Analysis of the Second-Forbidden Electron Capture Transition 123Te(1/2g.s.+) → 123Sb(7/2g.s.+) RADIOACTIVITY 122Sb(β-); calculated transitions logft. 123Te(EC); calculated transition matrix elements. Proton-neutron quasiparticle RPA, comparisons with data.
doi: 10.1103/PhysRevC.64.064312
2001SU01 Phys.Lett. 497B, 221 (2001) Theoretical Results on the Double Positron Decay of 106Cd RADIOACTIVITY 106Cd(2β+), (β+EC), (2EC); calculated 2ν-accompanied decay T1/2, decay branching ratios. Comparison with data. NUCLEAR STRUCTURE 106Cd, 106Pd; calculated levels, J, π.
doi: 10.1016/S0370-2693(00)01324-1
2000BE02 Phys.Rev. C61, 024315 (2000) D.R.Bes, O.Civitarese, E.E.Maqueda, N.N.Scoccola Structure of the Vacuum States in the Presence of Isovector and Isoscalar Pairing Correlations
doi: 10.1103/PhysRevC.61.024315
2000CI02 Phys.Lett. 482B, 368 (2000) Questioning Model-Independent Estimates of 2 νββ Decay Rates RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd(2β-); analyzed previous results for 2ν accompanied 2β-decay; deduced no model independence.
doi: 10.1016/S0370-2693(00)00462-7
2000CI03 Phys.Rev. C61, 064303 (2000) O.Civitarese, P.O.Hess, J.G.Hirsch, M.Reboiro Fermion and Boson Condensates in a QCD-Inspired Model Hamiltonian
doi: 10.1103/PhysRevC.61.064303
2000CI04 Phys.Rev. C61, 064306 (2000) O.Civitarese, F.Montani, M.Reboiro, H.Toki Spontaneous Symmetry Breaking and the Energy of Nuclear Isobaric Analog States NUCLEAR STRUCTURE 90,92,94Nb, 100Tc, 116In, 124Sb, 169Yb, 208Bi; calculated IAS energies, role of symmetry breaking, ρ-meson exchange mechanism.
doi: 10.1103/PhysRevC.61.064306
2000CI06 Phys.Rev. C62, 054318 (2000) O.Civitarese, J.G.Hirsch, F.Montani, M.Reboiro Extended Quasiparticle Random Phase Approximation at Finite Temperatures: Calculation of single β-decay Fermi transitions RADIOACTIVITY 76Ge(β-); calculated Fermi transitions sum rule, strength distributions, temperature effects. Extended quasiparticle RPA.
doi: 10.1103/PhysRevC.62.054318
2000SA14 Phys.Rev. C61, 044317 (2000) N.Sandulescu, O.Civitarese, R.J.Liotta Temperature Dependent BCS Equations with Continuum Coupling
doi: 10.1103/PhysRevC.61.044317
1999BE03 Phys.Lett. 446B, 93 (1999) D.R.Bes, O.Civitarese, N.N.Scoccola Collective Description of Nuclear Double Beta Decay Transitions
doi: 10.1016/S0370-2693(98)01520-2
1999CI01 Phys.Rev. C59, 194 (1999) O.Civitarese, P.O.Hess, J.G.Hirsch, M.Reboiro Spontaneous and Dynamical Breaking of Mean Field Symmetries in the Proton-Neutron Quasiparticle Random Phase Approximation and the Description of Double β Decay Transitions NUCLEAR STRUCTURE 76Ge; calculated 2ν-accompanied 2β-decay matrix elements. Isospin symmetry breaking.
doi: 10.1103/PhysRevC.59.194
1999CI04 Phys.Scr. 59, 352 (1999) Centroids of Gamow-Teller Transitions at Finite Temperature in fp-Shell Neutron-Rich Nuclei NUCLEAR STRUCTURE 54,56Fe, 58,60Ni; calculated Gamow-Teller transitions energies, strengths, temperature dependence. Quasiparticle RPA.
doi: 10.1238/Physica.Regular.059a00352
1999CI08 Nucl.Phys. A653, 321 (1999) Systematic Study of the Single-State Dominance in 2νββ Decay Transitions RADIOACTIVITY 100Mo, 110Pd, 114,116Cd, 128Te(2β-); 106Cd, 136Ce(2EC); analyzed 2ν-accompanied 2β-decay data; deduced single-state-dominance hypothesis validity. Quasiparticle RPA.
doi: 10.1016/S0375-9474(99)00172-4
1999CI09 Phys.Rev. C60, 024305 (1999) O.Civitarese, F.Montani, M.Reboiro Extended Proton-Neutron Quasiparticle Random-Phase Approximation in a Boson Expansion Method
doi: 10.1103/PhysRevC.60.024305
1999CI12 Phys.Rev. C60, 034302 (1999) Boson Mapping at Finite Temperature: An application to the thermo field dynamics
doi: 10.1103/PhysRevC.60.034302
1999CI14 Nucl.Phys. A660, 255 (1999) O.Civitarese, M.Gadella, R.Id Betan On the Mean Value of the Energy for Resonant States
doi: 10.1016/S0375-9474(99)00405-4
1999HI04 Phys.Rev. C60, 024309 (1999) J.G.Hirsch, O.Civitarese, M.Reboiro Comparison between Wave Functions in the Random Phase Approximation, Renormalized Random phase Approximation, and Self-Consistent Random Phase Approximation Methods
doi: 10.1103/PhysRevC.60.024309
1999HI09 Phys.Rev. C60, 064303 (1999) J.G.Hirsch, P.O.Hess, O.Civitarese Boson Expansion Techniques, the Pauli Principle, and the Quasiparticle Random Phase Approximation Phase Transition
doi: 10.1103/PhysRevC.60.064303
1998BH04 Phys.Rev. C58, 1247 (1998) M.Bhattacharya, A.Garcia, M.M.Hindi, E.B.Norman, C.E.Ortiz, N.I.Kaloskamis, C.N.Davids, O.Civitarese, J.Suhonen Electron Capture Decay of 116In and Nuclear Structure of Double β Decays RADIOACTIVITY 116In(EC) [from 115In(d, p), E=7.6 MeV]; measured X-ray spectra vs time; deduced EC decay branch, log ft. 116Cd(2β); calculated 2ν associated 2β-decay T1/2. QRPA calculations, low-lying-state dominance hypothesis.
doi: 10.1103/PhysRevC.58.1247
1998CI02 Phys.Rev. C57, 3055 (1998) Exactly Solvable Fermion-Boson Mapping Representations
doi: 10.1103/PhysRevC.57.3055
1998CI03 Phys.Rev. C57, 3062 (1998) Comparative Study on the Validity of the Renormalized Random-Phase Approximation
doi: 10.1103/PhysRevC.57.3062
1998CI05 Phys.Rev. C58, 1535 (1998) Is the Single-State Dominance Realized in Double-β-Decay Transitions ? RADIOACTIVITY 100Mo, 110Pd, 106,114,116Cd, 128Te, 136Ce(2β); calculated 2ν accompanied 2β-decay matrix elements, T1/2; deduced support for single-state-dominance hypothesis.
doi: 10.1103/PhysRevC.58.1535
1998CI08 Phys.Rev. C58, 2787 (1998) Fermion-Boson Interactions in a Solvable Model
doi: 10.1103/PhysRevC.58.2787
1998CI09 Nucl.Phys. A642, 531 (1998) O.Civitarese, A.L.De Paoli, M.C.Rocca Resonant States in the Thermo Field Dynamics
doi: 10.1016/S0375-9474(98)00488-6
1998CI10 Prog.Part.Nucl.Phys. 40, 297 (1998) Nuclear Structure and Double Beta Decay
doi: 10.1016/S0146-6410(98)00039-8
1998SU19 Phys.Rep. 300, 123 (1998) Weak-Interaction and Nuclear-Structure Aspects of Nuclear Double Beta Decay RADIOACTIVITY 48Ca, 76Ge, 78Kr, 82Se, 96Zr, 92,100Mo, 96Ru, 106,116Cd, 124Sn, 128,130Te, 124,136Xe, 130Ba, 136Ce, 150Nd(2β); compiled, analyzed 2β-decay data; deduced phase-space factors, matrix elements systematics.
doi: 10.1016/S0370-1573(97)00087-2
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