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NSR database version of April 11, 2024.

Search: Author = A.N.Ivanov

Found 38 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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2014IV03      Phys.Rev. C 89, 055502 (2014)

A.N.Ivanov, M.Pitschmann, N.I.Troitskaya, Ya.A.Berdnikov

Bound-state β-decay of the neutron re-examined

RADIOACTIVITY 1n(β-); calculated observables of the bound-state β decay of neutron, branching ratio, probabilities, angular distributions of probabilities of hydrogen in the hyperfine states and proton-electron pair in different spinorial states. Discussed observables for experimental investigations of contributions of interactions beyond the Standard Model, and left-handed polarization state of antineutrinos.

doi: 10.1103/PhysRevC.89.055502
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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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2011FA13      Phys.Rev. C 84, 064314 (2011)

M.Faber, M.P.Faifman, A.N.Ivanov, J.Marton, M.Pitschmann, N.I.Troitskaya

Energy-level displacement of excited NP states of kaonic deuterium in a Faddeev-equation approach

doi: 10.1103/PhysRevC.84.064314
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2010FA01      J.Phys.(London) G37, 015102 (2010)

M.Faber, A.N.Ivanov, P.Kienle, M.Pitschmann, N.I.Troitskaya

The influence of the magnetic field of the GSI experimental storage ring on the time-modulation of the EC-decay rates of the H-like mother ions

NUCLEAR STRUCTURE 140Pr, 142Pm; calculated EC-decay rates; deduced motion in homogeneous magnetic field cannot be the origin of the periodic time dependence of the EC-decay rates.

doi: 10.1088/0954-3899/37/1/015102
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2009BE04      Phys.Atomic Nuclei 72, 266 (2009); Yad.Fiz. 72, 294 (2009)

A.Ya.Berdnikov, Ya.A.Berdnikov, A.N.Ivanov, V.A.Ivanova, V.F.Kosmach, A.V.Nikitchenko, N.I.Tritskaya

Polarization properties of baryons in the hadronic decays of the Δ(1232) resonance

doi: 10.1134/S1063778809020100
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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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2009IV02      Phys.Rev.Lett. 103, 062502 (2009)

A.N.Ivanov, P.Kienle

Time Modulation of the K-Shell Electron Capture Decay Rates of H-like Heavy Ions at GSI Experiments

RADIOACTIVITY 140,142Pm, 122I(EC), (β+); measured number of daughter ions, time modulation; deduced interference of two massive neutrino eigenstates.

doi: 10.1103/PhysRevLett.103.062502
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2008FA14      Phys.Rev. C 78, 061603 (2008)

M.Faber, A.N.Ivanov, P.Kienle, E.L.Kryshen, M.Pitschmann, N.I.Troitskaya

First-forbidden continuum- and bound-state β--decay rates of bare 205Hg80+ and 207Tl81+ ions

RADIOACTIVITY 205Hg, 207Tl(β-); analyzed ratios of continuum and bound-state decay rates of base ions. Comparisons with data and model calculations.

doi: 10.1103/PhysRevC.78.061603
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2008IV05      Phys.Rev. C 78, 025503 (2008)

A.N.Ivanov, M.Faber, R.Reda, P.Kienle

Weak decays of H-like 140Pr58+ and He-like 140Pr57+ ions

RADIOACTIVITY 140Pr(EC)(β+); calculated decay constants of H-like 58+ and He-like 57+ charge states. Comparison with experimental data.

doi: 10.1103/PhysRevC.78.025503
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2008IV07      Phys.Rev.Lett. 101, 182501 (2008)

A.N.Ivanov, E.L.Kryshen, M.Pitschmann, P.Kienle

Time Modulation of the β+-Decay Rate of H-Like 140Pr58+ Ions

RADIOACTIVITY 140,142Pr(β+); calculated decay rate time dependence.

doi: 10.1103/PhysRevLett.101.182501
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2006ER01      Phys.Lett. B 634, 39 (2006)

T.E.O.Ericson, A.N.Ivanov

Dispersive e.m. corrections to πN scattering lengths

doi: 10.1016/j.physletb.2006.01.024
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2005IV01      Eur.Phys.J. A 23, 1 (2005)

A.N.Ivanov, M.Cargnelli, M.Faber, H.Fuhrmann, V.A.Ivanova, J.Marton, N.I.Troitskaya, J.Zmeskal

From solar proton burning to pionic deuterium through the Nambu-Jona-Lasinio model of light nuclei

ATOMIC PHYSICS, Mesic-atoms 2H; calculated pionic deuterium ground-state width. Nambu-Jona-Lasinio model.

NUCLEAR REACTIONS 2H(π-, X), E at rest; calculated pionic deuterium ground-state width. Nambu-Jona-Lasinio model.

doi: 10.1140/epja/i2004-10070-4
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2005IV02      Eur.Phys.J. A 23, 79 (2005)

A.N.Ivanov, M.Cargnelli, M.Faber, H.Fuhrmann, V.A.Ivanova, J.Marton, N.I.Troitskaya, J.Zmeskal

On kaonic deuterium. Quantum field-theoretic and relativistic covariant approach

ATOMIC PHYSICS, Mesic-atoms 2H; calculated energy level shifts for kaonic deuterium. Quantum field-theoretic and relativistic covariant approach.

NUCLEAR REACTIONS 2H(K-, X), E=low; calculated scattering lengths, hyperon production amplitudes, final state interaction effects. Quantum field-theoretic and relativistic covariant approach.

doi: 10.1140/epja/i2004-10055-3
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2005IV05      Eur.Phys.J. A 25, 329 (2005)

A.N.Ivanov, M.Cargnelli, M.Faber, H.Fuhrmann, V.A.Ivanova, J.Marton, N.I.Troitskaya, J.Zmeskal

On kaonic hydrogen. Phenomenological quantum field theoretic model revisited

NUCLEAR REACTIONS 1H(K-, π-X), (K-, π0X), (K-, π+X), E at 70-150 MeV/c; calculated scattering lengths, σ. Phenomenological quantum field theoretic model, comparisons with data.

doi: 10.1140/epja/i2005-10128-9
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2004IV01      Eur.Phys.J. A 19, 413 (2004)

A.N.Ivanov, M.Faber, A.Hirtl, J.Marton, N.I.Troitskaya

Energy level displacement of the excited nl state of pionic hydrogen

ATOMIC PHYSICS, Mesic-atoms 1H; calculated energy level shifts in pionic hydrogen. Relativistic covariant approach.

NUCLEAR REACTIONS 1H(π-, X), E at rest; calculated energy level shifts in pionic hydrogen. Relativistic covariant approach.

doi: 10.1140/epja/i2003-10134-y
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2004IV03      Eur.Phys.J. A 21, 11 (2004)

A.N.Ivanov, M.Cargnelli, M.Faber, J.Marton, N.I.Troitskaya, J.Zmeskal

On kaonic hydrogen. Quantum field theoretic and relativistic covariant approach

ATOMIC PHYSICS, Mesic-atoms 1H; calculated ground-state energy, radiative decay widths for kaonic hydrogen. Quantum field theoretic and relativistic covariant approach.

doi: 10.1140/epja/i2003-10178-y
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2003BE72      Fizika(Zagreb) B 12, 235 (2003)

A.Ya.Berdnikov, Ya.A.Berdnikov, A.N.Ivanov, V.A.Ivanova, V.F.Kosmach, V.M.Samsonov, N.I.Troitskaya

On hadron production from the quark-gluon plasma phase in ultra-relativistic heavy-ion collisions

NUCLEAR REACTIONS Pb(Pb, X), S, U(S, X), U(O, X), E=high; calculated particle yield ratios from quark-gluon plasma. Comparisons with data.


2003IV04      Eur.Phys.J. A 18, 653 (2003)

A.N.Ivanov, M.Faber, A.Hirtl, J.Marton, N.I.Troitskaya

On pionic hydrogen. Quantum field theoretic, relativistic covariant and model-independent approach

ATOMIC PHYSICS, Mesic-atoms 1H; calculated pionic hydrogen energy levels, widths. Quantum field theoretic, relativistic covariant approach.

doi: 10.1140/epja/i2003-10095-1
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2002BE45      Acta Phys.Slovaca 52, 143 (2002)

A.Ya.Berdnikov, Ya.A.Berdnikov, A.N.Ivanov, V.F.Kosmach, V.S.Samsonov, N.I.Troitskaya

On the K±-Meson Production from the Quark-Gluon Plasma Phase in Ultra-Relativistic Heavy-Ion Collisions

NUCLEAR REACTIONS Pb(Pb, X), E=high; calculated charged kaon and pion relative yields, multiplicities, role of quark-gluon plasma. Comparison with data.


2001BE73      Eur.Phys.J. A 12, 341 (2001)

A.Ya.Berdnikov, Ya.A.Berdnikov, A.N.Ivanov, V.A.Ivanova, V.F.Kosmach, M.D.Scadron, N.I.Troitskaya

On Polarization of Strange Baryons in Reactions p + p → p + Λ0 + K+ and p + p → p + Σ0 + K+ Near Thresholds

NUCLEAR REACTIONS 1H(polarized p, pX), E=high; calculated σ, polarization for Λ0+K+ and Σ0+K+ exit channels. Comparison with data.

doi: 10.1007/s100500170012
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2001IV06      Eur.Phys.J. A 12, 87 (2001)

A.N.Ivanov, V.A.Ivanova, H.Oberhummer, N.I.Troitskaya, M.Faber

On the D-Wave State Component of the Deuteron in the Nambu-Jona-Lasinio Model of Light Nuclei

NUCLEAR STRUCTURE 2H; calculated D-wave component admixture. Nambu-Jona-Lasinio model, comparison with data.

doi: 10.1007/s100500170041
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2000BE61      Eur.Phys.J. A 9, 425 (2000)

A.Ya.Berdnikov, Ya.A.Berdnikov, A.N.Ivanov, V.F.Kosmach, M.D.Scadron, N.I.Troitskaya

On the Reactions p = p → p + Λ + K+ and p + p → p + Σ0 + K+ Near Thresholds

NUCLEAR REACTIONS 1H(p, X), E=high; calculated σ for pΛK+ and pΣ0K+ output channels using effective Lagrangian approach. Comparison with data.

doi: 10.1007/s100500070027
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2000IV04      Eur.Phys.J. A 7, 519 (2000)

A.N.Ivanov, H.Oberhummer, N.J.Troitskaya, M.Faber

The Nambu-Jona-Lasinio Model of Light Nuclei

doi: 10.1007/s100500050425
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2000IV05      Eur.Phys.J. A 8, 125 (2000)

A.N.Ivanov, H.Oberhummer, N.I.Troitskaya, M.Faber

On the ΔΔ Component of the Deuteron in the Nambu-Jona-Lasinio Model of Light Nuclei

NUCLEAR STRUCTURE 2H; calculated ΔΔ component contribution. Nambu-Jona-Lasinio model of light nuclei. Comparison with data.

doi: 10.1007/s100530050016
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2000IV06      Eur.Phys.J. A 8, 223 (2000)

A.N.Ivanov, H.Oberhummer, N.I.Troitskaya, M.Faber

Dynamics of Low-Energy Nuclear Forces for Electromagnetic and Weak Reactions with the Deuteron in the Nambu-Jona-Lasinio Model of Light Nuclei

NUCLEAR REACTIONS 1H(n, γ), E=thermal; 2H(γ, n), E=2.62-4.45 MeV; 2H(ν, e-p), E=4-10 MeV; calculated σ. 1H(p, X), E=low; calculated spectroscopic factor Spp(0). 2H(ν-bar, e+n), 2H(ν, nν), E not given; calculated σ averaged over antineutrino energy spectrum. Astrophysics relevance discussed.

doi: 10.1007/s100530050030
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1999BE30      Phys.Rev. C60, 015201 (1999)

Ya.A.Berdnikov, A.N.Ivanov, V.F.Kosmach, N.I.Troitskaya

Λc+ → p + K- + π+ Decay

doi: 10.1103/PhysRevC.60.015201
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1999IV01      Phys.Rev. C59, 451 (1999)

A.N.Ivanov, M.Nagy, N.I.Troitskaya

Effective Quark Model with Chiral U(3) x U(3) Symmetry for Baryon Octet and Decuplet

doi: 10.1103/PhysRevC.59.451
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1998FA20      Nuovo Cim. 111A, 513 (1998)

M.Faber, A.N.Ivanov, N.I.Troitskaya

Nambu-Jona-Lasinio Approach to Realization of Confining Medium


1997IV02      Nucl.Phys. A617, 414 (1997); Erratum Nucl.Phys. A625, 896 (1997)

A.N.Ivanov, N.I.Troitskaya, M.Faber, H.Oberhummer

On the Relativistic Field Theory Model of the Deuteron II

NUCLEAR REACTIONS 1H(n, γ), E=low; 1H(p, X), E=low; calculated radiative capture, fusion σ respectively. Relativistic field theory model.

doi: 10.1016/S0375-9474(97)00016-X
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1997IV04      Z.Phys. A358, 81 (1997)

A.N.Ivanov, N.I.Troitskaya, M.Faber, H.Oberhummer

On the S-Wave πD-Scattering Length in the Relativistic Field Theory Model of the Deuteron

NUCLEAR REACTIONS 2H(π, π), E not given; calculated S-wave scattering length; deduced importance of Δ-resonance.

doi: 10.1007/s002180050279
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