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NSR database version of April 11, 2024.

Search: Author = M.Wellenzohn

Found 10 matches.

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2021IV03      Phys.Rev. C 104, 025503 (2021)

A.N.Ivanov, R.Hollwieser, N.I.Troitskaya, M.Wellenzohn, Ya.A.Berdnikov

Structure of the correlation coefficients S(Ee) and U(Ee) of the neutron β decay

RADIOACTIVITY 1n(β-); calculated electron-energy and angular distribution of neutron β decay for polarized neutrons, polarized electrons, and unpolarized protons, electron-photon energy and angular distribution of neutron radiative β decay for polarized neutrons, polarized electrons, and unpolarized protons and photons; deduced structure of the correlation coefficients for low-energy weak interactions in the standard model (SM).

doi: 10.1103/PhysRevC.104.025503
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2020IV01      Nucl.Phys. B951, 114891 (2020)

A.N.Ivanov, R.Hollwieser, N.I.Troitskaya, M.Wellenzohn, Ya.A.Berdnikov

Precision analysis of pseudoscalar interactions in neutron beta decays

RADIOACTIVITY 1NN(β-); analyzed available data; deduced the real and imaginary parts of the effective coupling constant.

doi: 10.1016/j.nuclphysb.2019.114891
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2019IV01      Nucl.Phys. B938, 114 (2019)

A.N.Ivanov, R.Hollwieser, N.I.Troitskaya, M.Wellenzohn, Ya.A.Berdnikov

Neutron dark matter decays and correlation coefficients of neutron β--decays

RADIOACTIVITY 1NN(β-); analyzed available data; deduced correlation coefficients of the neutron β-decays with polarized neutron, taking into account the contributions of scalar and tensor interactions beyond the SM with the Fierz interference, axial coupling constant, T1/2.

doi: 10.1016/j.nuclphysb.2018.11.005
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2018IV07      Phys.Rev. C 98, 035503 (2018)

A.N.Ivanov, R.Hollwieser, N.I.Troitskaya, M.Wellenzohn, Ya.A.Berdnikov

Tests of the standard model in neutron β decay with a polarized neutron and electron and an unpolarized proton

RADIOACTIVITY 1n(β-); calculated scalar and tensor coupling constants of interactions in and beyond the Standard Model, and their contribution to half-life and the correlation coefficients of β- energy and angular distribution, with polarized neutron and electron, and unpolarized proton, asymmetry of neutron-electron spin-spin correlations. Contributions of the G-odd correlations or those of the second-class hadronic currents. Relevance to precise analysis of neutron half-life.

doi: 10.1103/PhysRevC.98.035503
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2017IV02      Phys.Rev. D 95, 033007 (2017)

A.N.Ivanov, R.Hollwieser, N.I.Troitskaya, M.Wellenzohn, Ya.A.Berdnikov

Precision theoretical analysis of neutron radiative beta decay

RADIOACTIVITY 1NN(β-); calculated he rate and branching ratio of the neutron radiative β-decay with one real photon emission by taking into account the contributions of the weak magnetism and proton recoil. Comparison with available data.

doi: 10.1103/PhysRevD.95.033007
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2017IV05      Phys.Rev. C 95, 055502 (2017); Erratum Phys.Rev. C 104, 069901 (2021)

A.N.Ivanov, R.Hollwieser, N.I.Troitskaya, M.Wellenzohn, Ya.A.Berdnikov

Precision analysis of electron energy spectrum and angular distribution of neutron β- decay with polarized neutron and electron

RADIOACTIVITY 1n(β-); calculated correlation coefficients of the electron energy spectrum, and angular distribution of the β- decay of the neutron with polarized neutron and electron within the standard model (SM) with V-A weak interactions with contributions of weak magnetism and proton recoil to next-to-leading order.

doi: 10.1103/PhysRevC.95.055502
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2014IV04      Phys.Rev. C 90, 034620 (2014)

A.N.Ivanov, R.S.Hayano, R.Hollwieser, N.I.Troitskaya, M.Wellenzohn, Ya.A.Berdnikov

β-decay rates of bare 108Ag47+ and H-like 108Ag46+ ions

RADIOACTIVITY 108Ag(β-), (EC); calculated decay rates of the continuum-state, bound-state, and EC-decay rates for bare 108Ag47+ and H-like 108Ag46+ ions using standard theory of weak interactions of heavy ions. Comparison with experimental decay rates of neutral 108Ag atoms.

doi: 10.1103/PhysRevC.90.034620
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2014IV07      Phys.Rev. C 90, 064608 (2014); Pub.Note Phys.Rev. C 90, 069902 (2014)

A.N.Ivanov, R.Hollwieser, M.Wellenzohn, N.I.Troitskaya, Ya.A.Berdnikov

Internal bremsstrahlung of β decay of atomic 3516S

RADIOACTIVITY 35S(β-); calculated energy spectra and the branching ratio of the internal bremsstrahlung (IB) by extending the classical electrodynamical analysis of the nuclear β decays to the quantum electrodynamical one. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.064608
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2013IV08      Phys.Rev. C 88, 055501 (2013)

A.N.Ivanov, R.Hollwieser, N.I.Troitskaya, M.Wellenzohn, O.M.Zherebtsov, A.P.Serebrov

Deficit of reactor antineutrinos at distances smaller than 100 m and inverse β decay

NUCLEAR REACTIONS 1H(ν, ne+), E=2-8 MeV; calculated deficit of anti-neutrino flux at distances <100 m from reactor for neutron mean lifetimes of 885.7 s to 879.6 s, and axial coupling constants of -1.2694 and -1.2750, angular distribution, cross section for inverse β decay, radiative correction to order α/π AP 10-3.

RADIOACTIVITY 1n(β-); calculated antineutrino-energy spectrum to order α/π AP 10-3 including contributions of weak magnetism and proton recoil.

doi: 10.1103/PhysRevC.88.055501
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2009FA10      Phys.Rev. C 80, 035503 (2009)

M.Faber, A.N.Ivanov, V.A.Ivanova, J.Marton, M.Pitschmann, A.P.Serebrov, N.I.Troitskaya, M.Wellenzohn

Continuum-state and bound-state β+-decay rates of the neutron

RADIOACTIVITY 1n(β-); calculated decay rates, the electron energy spectrum for the continuum-state decay mode, angular distributions of the decay probabilities for the continuum-state and bound-state decay modes, and the dependence of the CKM matrix element on the lifetime of the neutron and the axial coupling constant gA. Comparison of calculated correlation coefficients of the energy spectrum of the continuum-state β decay with experimental data.

doi: 10.1103/PhysRevC.80.035503
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