NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = L.Hayen Found 15 matches. 2024LE05 Phys.Rev.Lett. 132, 132501 (2024) M.Le Joubioux, H.Savajols, W.Mittig, X.Flechard, L.Hayen, Yu.E.Penionzhkevich, D.Ackermann, C.Borcea, L.Caceres, P.Delahaye, F.Didierjean, S.Franchoo, A.Grillet, B.Jacquot, M.Lebois, X.Ledoux, N.Lecesne, E.Lienard, S.Lukyanov, O.Naviliat-Cuncic, J.Piot, A.Singh, V.Smirnov, C.Stodel, D.Testov, D.Thisse, J.C.Thomas, D.Verney Search for a Neutron Dark Decay in 6He RADIOACTIVITY 6He(α), (2n), (n); measured decay products, En, In. 1NN; deduced a coincident neutron signal resulted in an upper limit on a dark decay branching ratio, an upper bound on a dark neutron branching ratio. The Grand Accelerateur National d'Ions Lourds (GANIL) SPIRAL1 facility.
doi: 10.1103/PhysRevLett.132.132501
2023BY02 Phys.Rev.Lett. 131, 082502 (2023) W.Byron, H.Harrington, R.J.Taylor, W.DeGraw, N.Buzinsky, B.Dodson, M.Fertl, A.Garcia, G.Garvey, B.Graner, M.Guigue, L.Hayen, X.Huyan, K.S.Khaw, K.Knutsen, D.McClain, D.Melconian, P.Muller, E.Novitski, N.S.Oblath, R.G.H.Robertson, G.Rybka, G.Savard, E.Smith, D.D.Stancil, M.Sternberg, D.W.Storm, H.E.Swanson, J.R.Tedeschi, B.A.VanDevender, F.E.Wietfeldt, A.R.Young, X.Zhu, for the He6-CRES Collaboration First Observation of Cyclotron Radiation from MeV-Scale e± following Nuclear β Decay RADIOACTIVITY 6He(β-), 19Ne(β+) [7Li(d, 3He), E=17.8 MeV; 19F(p, n), E=12 MeV]; measured decay products, Eβ, Iβ; deduced β spectra, first direct observation of cyclotron radiation from individual highly relativistic β in a waveguide. The cyclotron radiation emission spectroscopy (CRES) technique, FN-tandem accelerator at the University of Washington.
doi: 10.1103/PhysRevLett.131.082502
2023HA20 Phys.Rev. C 107, 065503 (2023) L.Hayen, J.H.Choi, D.Combs, R.J.Taylor, S.Baessler, N.Birge, L.J.Broussard, C.B.Crawford, N.Fomin, M.Gericke, F.Gonzalez, A.Jezghani, N.Macsai, M.Makela, D.G.Mathews, R.Mammei, M.McCrea, A.Mendelsohn, A.Nelsen, G.Riley, T.Shelton, S.Sjue, E.Smith, A.R.Young, B.Zeck Precision pulse shape simulation for proton detection at the Nab experiment
doi: 10.1103/PhysRevC.107.065503
2023KI04 Phys.Rev. C 107, 015503 (2023) G.B.King, A.Baroni, V.Cirigliano, S.Gandolfi, L.Hayen, E.Mereghetti, S.Pastore, M.Piarulli Ab initio calculation of the β-decay spectrum of 6He RADIOACTIVITY 6He(β-); calculated T1/2, β-decay energy spectrum, corrections to the β-decay spectrum induced by beyond-standard-model charged-current interactions in the standard model effective field theory, with and without sterile neutrinos. Quantum Monte Carlo methods with nuclear interactionsderived from chiral effective field theory and consistent weak vector and axial currents. Comparison to available experimental data.
doi: 10.1103/PhysRevC.107.015503
2023SE01 Phys.Rev. C 107, 015502 (2023) N.Severijns, L.Hayen, V.De Leebeeck, S.Vanlangendonck, K.Bodek, D.Rozpedzik, I.S.Towner Ft values of the mirror β transitions and the weak-magnetism-induced current in allowed nuclear β decay RADIOACTIVITY 1n, 3H(β-); 11C, 13N, 15O, 17F, 19Ne, 21Na, 23Mg, 25Al, 27Si, 29P, 31S, 33Cl, 35Ar, 37K, 39Ca, 41Sc, 43Ti, 45V, 47Cr, 49Mn, 51Fe, 53Co, 55Ni, 57Cu, 59Zn, 61Ga, 63Ge, 65As, 67Se, 69Br, 71Kr, 73Rb, 75Sr, 77Y, 79Zr, 81Nb, 83Mo, 85Tc, 89Rh, 91Pd, 93Ag, 95Cd, 97In, 99Sn(EC), (β+); analyzed and evaluated measured half-lives for decays of all the listed nuclei, and ground-state branching ratios for decays of 1n to 75Sr, T=1/2 mirror β decays; deduced adopted T1/2, ground-state branching ratios for decays of 1n to 83Mo, except 69Br, 73Rb and 81Nb. 1n, 3H(β-); 11C, 13N, 15O, 17F, 19Ne, 21Na, 23Mg, 25Al, 27Si, 29P, 31S, 33Cl, 35Ar, 37K, 39Ca, 41Sc, 43Ti, 45V, 47Cr, 49Mn, 51Fe, 53Co, 55Ni, 57Cu, 59Zn, 61Ga, 67Se, 71Kr, 75Sr(EC), (β+); calculated quantities and relevant corrections leading to the Ft values for mirror β transitions, and compared with available experimental values; comparison of experimental and theoretical values for the Gamow-Teller matrix element (MGT) and the orbital current matrix element (ML) for mirror β transitions from 1n to 45V decays. 6He, 9Li, 12,13B, 14,15C, 16N, 19O, 20F, 23Ne, 24,24mNa, 28Al, 32Si(β-); 9,10C, 12N, 13,14O, 18F, 18Ne, 20,22Na, 22Mg, 24,24mAl, 26Si, 28,30P, 30S, 32Cl, 34Ar, 36K, 38Ca, 42Ti, 53Ni(EC), (β+); analyzed logft values and other data for β transitions for T=1, 3/2 and 2 multiplet states for radiative corrections; comparison of the experimental values for the MGT and ML, and the form factors with the theoretical values calculated using shell model. 1n, 3H, 6He, 8,9Li, 12B, 16N, 20F, 23,24Ne, 24,24mNa(β-); 8Be, 9,10,11C, 12,13N, 15O, 17,18F, 18,19Ne, 20,21Na, 23Mg, 24,24m,25Al, 27Si, 29,30P, 30,31S, 33Cl, 35Ar, 36,37K, 39Ca(EC), (β+); analyzed overview of values of experimental form factors for all ground-state to ground-state and ground-state to first-excited 2+ or 4+ state T=1 and 3/2 transitions with A<39, and comparison with theoretical shell model calculations. 6He, 9Li, 12,13B, 14,15C, 16N, 19O, 20F, 23Ne, 24,24mNa, 28Al, 32Si(β-); 9,10C, 12N, 13,14O, 18Ne, 18F, 20,22Na, 22Mg, 24,24mAl, 26Si, 28,30P, 30S, 32Cl, 34Ar, 36K, 38Ca, 42Ti, 53Ni(β+); analyzed decay schemes for T=1 and T=3/2 mirror β transitions. Update of the Ft values of the isospin T=1/2 mirror β decays determine the Vud quark-mixing matrix element, taking into account recoil terms, weak magnetism, for the mirror β decays and a large set of β decays in higher isospin multiplets. Relevance to reactor neutrino problem and reactor neutrino anomaly. NUCLEAR MOMENTS 1n, 1,3H, 3He, 11,13C, 11B, 13,15N, 15,17O, 17,19F, 19,21Ne, 21,23Na, 23,25Mg, 25,27Al, 27,29Si, 29,31P, 31,33S, 33,35Cl, 35,37Ar, 37,39K, 39,41Ca, 41,43Sc, 43,45Ti, 45,47V, 47,49Cr, 49,51Mn, 51,53Fe, 53,55Co, 55,57Ni, 57,59Cu, 59,61Zn, 61,63Ga, 67As, 67Se, 71Br, 71Kr, 75Rb, 75,77Sr; analyzed and evaluated measured magnetic dipole moments of T=1/2 mirror nuclei; deduced adopted values, and calculated magnetic moments for which no experimental data available; deduced conserved vector current (CVC) form factors, and compared with theoretical shell-model calculations.
doi: 10.1103/PhysRevC.107.015502
2022CU09 Phys.Rev. C 106, 065506 (2022) C.Cude-Woods, F.M.Gonzalez, E.M.Fries, T.Bailey, M.Blatnik, N.B.Callahan, J.H.Choi, S.M.Clayton, S.A.Currie, M.Dawid, B.W.Filippone, W.Fox, P.Geltenbort, E.George, L.Hayen, K.P.Hickerson, M.A.Hoffbauer, K.Hoffman, A.T.Holley, T.M.Ito, A.Komives, C.-Y.Liu, M.Makela, C.L.Morris, R.Musedinovic, C.O'Shaughnessy, R.W.Pattie, J.Ramsey, D.J.Salvat, A.Saunders, E.I.Sharapov, S.Slutsky, V.Su, X.Sun, C.Swank, Z.Tang, W.Uhrich, J.Vanderwerp, P.Walstrom, Z.Wang, W.Wei, A.R.Young Fill and dump measurement of the neutron lifetime using an asymmetric magneto-gravitational trap RADIOACTIVITY 1NN(β-); measured number of trapped neutrons; deduced free neutron lifetime T1/2. Comparison to previous most precise experimental data. Asymmetric magneto-gravitational trap at Los Alamos Ultracold Neutron Facility.
doi: 10.1103/PhysRevC.106.065506
2022VA06 Phys.Rev. C 106, 015506 (2022) S.Vanlangendonck, N.Severijns, L.Hayen, F.Gluck Influence of the recoil-order and radiative correction on the β decay correlation coefficients in mirror decays RADIOACTIVITY 3H(β-); 11C, 13N, 15O, 17F, 19Ne, 21Na, 23Mg, 25Al, 27Si, 29P, 31S, 33Cl, 35Ar, 37K, 39K, 39Ca, 41Sc, 43Ti, 45V(EC), (β+); compiled J, π, T1/2 of parent activities, Gamow-Teller to Fermi mixing ratios, previous, ongoing, and proposed measurements of β correlation coefficients for the mirror beta decays; analyzed dominant standard model correction terms for the recoil-order and the radiative correction in measurements of β-asymmetry parameter and βν(θ); calculated and evaluated recoil-order correction using Holstein formalism with the impulse approximation, semianalytical radiative corrections. Relevance to the planning of future experiments for determination of the β decay correlation coefficients which can provide bounds on the existence of exotic current, and possible existence of right-handed neutrinos.
doi: 10.1103/PhysRevC.106.015506
2020AB02 Phys.Rev.Lett. 124, 081803 (2020) C.Abel, S.Afach, N.J.Ayres, C.A.Baker, G.Ban, G.Bison, K.Bodek, V.Bondar, M.Burghoff, E.Chanel, Z.Chowdhuri, P.-J.Chiu, B.Clement, C.B.Crawford, M.Daum, S.Emmenegger, L.Ferraris-Bouchez, M.Fertl, P.Flaux, B.Franke, A.Fratangelo, P.Geltenbort, K.Green, W.C.Griffith, M.van der Grinten, Z.D.Grujic, P.G.Harris, L.Hayen, W.Heil, R.Henneck, V.Helaine, N.Hild, Z.Hodge, M.Horras, P.Iaydjiev, S.N.Ivanov, M.Kasprzak, Y.Kermaidic, K.Kirch, A.Knecht, P.Knowles, H.-C.Koch, P.A.Koss, S.Komposch, A.Kozela, A.Kraft, J.Krempel, M.Kuzniak, B.Lauss, T.Lefort, Y.Lemiere, A.Leredde, P.Mohanmurthy, A.Mtchedlishvili, M.Musgrave, O.Naviliat-Cuncic, D.Pais, F.M.Piegsa, E.Pierre, G.Pignol, C.Plonka-Spehr, P.N.Prashanth, G.Quemener, M.Rawlik, D.Rebreyend, I.Rienacker, D.Ries, S.Roccia, G.Rogel, D.Rozpedzik, A.Schnabel, P.Schmidt-Wellenburg, N.Severijns, D.Shiers, R.Tavakoli Dinani, J.A.Thorne, R.Virot, J.Voigt, A.Weis, E.Wursten, G.Wyszynski, J.Zejma, J.Zenner, G.Zsigmond Measurement of the Permanent Electric Dipole Moment of the Neutron NUCLEAR MOMENTS 1NN; measured frequencies; deduced the electric dipole moment (EDM) of the neutron or its upper limit.
doi: 10.1103/PhysRevLett.124.081803
2019BR14 Hyperfine Interactions 240, 1 (2019) L.J.Broussard, S.Baessler, T.L.Bailey, N.Birge, J.D.Bowman, C.B.Crawford, C.Cude-Woods, D.E.Fellers, N.Fomin, E.Frlez, M.T.W.Gericke, L.Hayen, A.P.Jezghani, H.Li, N.Macsai, M.F.Makela, R.R.Mammei, D.Mathews, P.L.McGaughey, P.E.Mueller, D.Pocanic, C.A.Royse, A.Salas-Bacci, S.K.L.Sjue, J.C.Ramsey, N.Severijns, E.C.Smith, J.Wexler, R.A.Whitehead, A.R.Young, B.A.Zeck Using Nab to determine correlations in unpolarized neutron decay RADIOACTIVITY 45Ca(β-); measured decay products, Eβ, Iβ; deduced sensitivity for the ratio of the weak axial-vector and vector coupling constants.
doi: 10.1007/s10751-018-1538-7
2019HA13 Phys.Rev. C 99, 031301 (2019) L.Hayen, J.Kostensalo, N.Severijns, J.Suhonen First-forbidden transitions in reactor antineutrino spectra RADIOACTIVITY 87Se, 86,89Br, 88,90,92,93,95Rb, 91Kr, 94,96,97,98Y, 95Sr, 133Sn, 135Te, 136m,137,138I, 140,142Cs, 87Se, 134mSb, 139Xe(β-)[from 235U(n, F), E=thermal]; calculated shape factors versus electron kinetic energy of dominant first-forbidden transitions above 4 MeV in the electron and antineutrino spectra of fission actinides, changes in the predicted electron and antineutrino spectra of the considered transitions compared to the allowed approximation with an optional weak magnetism correction, summed 235U electron spectrum using the fission yields from the ENDF database, and normalized spectral ratios for three experiments (Daya Bay, Reno and Double Chooz) relative to the Huber-Mueller predictions using the ENDF and ENSDF databases. Microscopic calculations using shell model approach.
doi: 10.1103/PhysRevC.99.031301
2019HA30 Phys.Rev. C 100, 054323 (2019) L.Hayen, J.Kostensalo, N.Severijns, J.Suhonen First-forbidden transitions in the reactor anomaly RADIOACTIVITY 86,89Br, 87Se, 88,90,92,93,95Rb, 91Kr, 94,96,97,98Y, 95Sr, 133Sn, 135,136Te, 134m,135Sb, 136m,137,138I, 140,142,143Cs, 139,140Xe(β-); calculated shape factors for first-forbidden non-unique β transitions using shell model, and compared with those for allowed shapes, and with data in literature, β spectra and comparison to the measured cumulative spectra measured at ILL-Grenoble for 235U; deduced uncertainty in the relative change in the prediction of the electron (antineutrino) spectra when using forbidden spectral shapes instead of simple allowed shapes, forbidden flux coverage; parametrized forbidden shape factors using Monte Carlo simulations. 235,238U, 239,241Pu; updated summation calculations, relative change in the cumulative electron and antineutrino spectra when treating the β transitions for listed isotopes as allowed and forbidden, integrated flux and inverse β decay (IBD) rate change due to the inclusion of forbidden transition shape factors, comparison of the expected spectrum change due to forbidden transitions for the different reactors: Daya Bay, RENO and Double Chooz.
doi: 10.1103/PhysRevC.100.054323
2019KA30 Phys.Rev. C 100, 015502 (2019);Erratum Phys. Rev. C 101, 049901 (2020) J.Karthein, D.Atanasov, K.Blaum, M.Breitenfeldt, V.Bondar, S.George, L.Hayen, D.Lunney, V.Manea, M.Mougeot, D.Neidherr, L.Schweikhard, N.Severijns, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber QEC-value determination for 21Na → 21Ne and 23Mg → 23Na mirror-nuclei decays using high-precision mass spectrometry with ISOLTRAP at the CERN ISOLDE facility ATOMIC MASSES 21Na, 23Mg; measured time-of-flight spectrum using laser ionization, Ramsey-type ion-cyclotron resonances, cyclotron frequency ratios using ISOLTRAP at ISOLDE-CERN facility; deduced Q(ϵ) values. Comparison with previous measurements. RADIOACTIVITY 21Na, 23Mg(EC)[from SiC(p, X), E=1.4 GeV from CERN Proton-Synchrotron booster, followed by magnetic mass separation using the general-purpose separator (GPS), laser ion source VADLIS, and ISOLDE resonant ionization laser ion source RILIS]; deduced Q(ϵ) from measured mass excesses, logft, up-down Vud element of the Cabibbo-Kobayashi-Maskawa quark mixing matrix. Comparison between Vud values for mirror-nuclei: 19Ne, 29P, 35Ar, 37K and 21Na.
doi: 10.1103/PhysRevC.100.015502
2018HA13 Rev.Mod.Phys. 90, 015008 (2018) L.Hayen, N.Severijns, K.Bodek, D.Rozpedzik, X.Mougeot High precision analytical description of the allowed β spectrum shape NUCLEAR STRUCTURE 14C, 14N, 25Na, 25Mg, 35S, 35Cl, 45Ca, 45Sc, 61Cr, 61Mn, 64Co, 64Ni, 100Nb, 100Mo, 104Nb, 104Mo, 121Sn, 121Sb; calculated weak charge radii. Comparison with available data.
doi: 10.1103/RevModPhys.90.015008
2018PE08 Acta Phys.Pol. B49, 261 (2018) M.Perkowski, K.Bodek, L.De Keukeleere, L.Hayen, A.Kozela, K.Lojek, D.Rozpedzik, N.Severijns Initial Tests of MiniBETA Spectrometer Performance
doi: 10.5506/aphyspolb.49.261
2015AF05 Eur.Phys.J. A 51, 143 (2015) S.Afach, G.Ban, G.Bison, K.Bodek, Z.Chowdhuri, M.Daum, M.Fertl, B.Franke, P.Geltenbort, Z.D.Grujic, L.Hayen, V.Helaine, R.Henneck, M.Kasprzak, Y.Kermaidic, K.Kirch, S.Komposch, A.Kozela, J.Krempel, B.Lauss, T.Lefort, Y.Lemiere, A.Mtchedlishvili, O.Naviliat-Cuncic, F.M.Piegsa, G.Pignol, P.N.Prashanth, G.Quemener, M.Rawlik, D.Ries, D.Rebreyend, S.Roccia, D.Rozpedzik, P.Schmidt-Wellenburg, N.Severijns, A.Weis, E.Wursten, G.Wyszynski, J.Zejma, G.Zsigmond A device for simultaneous spin analysis of ultracold neutrons
doi: 10.1140/epja/i2015-15143-7
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