NSR Query Results
Output year order : Descending NSR database version of March 21, 2024. Search: Author = S.Ando Found 49 matches. 2024AN01 Phys.Rev. C 109, 015801 (2024) Radiative decay of the subthreshold 1-1 and 2+1 states of 16O in cluster effective field theory
doi: 10.1103/PhysRevC.109.015801
2023AN04 Phys.Rev. C 107, 045808 (2023) S matrices of elastic α-12C scattering at low energies in effective field theory NUCLEAR REACTIONS 12C(α, α), E=2-6.6 MeV; calculated scattering amplitudes of elastic α scattering on 12C, phase shifts for channels with l=0, 1, 2, 3, 4, 5 and 6, asymptotic normalization coefficients for 16O threshold states. Relevance to C/O ratio along with the triple-α process in the helium burning process in stars.
doi: 10.1103/PhysRevC.107.045808
2022AN11 Phys.Rev. C 105, 064603 (2022) Elastic α-12C scattering at low energies with the resonant 2+2 and 2+3 states of 16O NUCLEAR REACTIONS 12C(α, α'), E<5.5 MeV; calculated phase shift for d-wave channel as function of α energy. 16O; calculated asymptotic normalization coefficients (ANC) of the 2+ state. Effective Lagrangian approach. Com parison to experimental data.
doi: 10.1103/PhysRevC.105.064603
2022SO19 Phys.Rev. C 106, 055807 (2022) Radiative proton capture on 15N within effective field theory NUCLEAR REACTIONS 15N(p, γ), E(cm)<2.3 MeV; calculated astrophysical S-factor energy dependence including value at zero energy, resonance parameters. Cluster effective field theory with effective Lagrangian appropriate for the reaction at low energies. Comparison to experimental data.
doi: 10.1103/PhysRevC.106.055807
2021AN03 Eur.Phys.J. A 57, 17 (2021) Cluster effective field theory and nuclear reactions NUCLEAR REACTIONS 12C(α, γ)16O, E<10 MeV; analyzed available data; calculated σ, S-factor. RADIOACTIVITY 16N(β-), (β-α); analyzed available data; deduced fitting parameters, β delayed α emission from 16N as a function of the α energy.
doi: 10.1140/epja/s10050-020-00304-8
2020AN03 Phys.Rev. C 101, 054001 (2020) S.-I.Ando, Y.-H.Song, C.H.Hyun Neutrino-deuteron reactions at solar neutrino energies in pionless effective field theory with dibaryon fields NUCLEAR REACTIONS 2H(ν, np), (ν-bar, e+2n), (ν-bar, np), (ν, e-2p), E=2-20 MeV, solar neutrino energies; calculated σ(E), and S-wave contribution to the σ(E) using pionless effective field theory with dibaryon fields (dEFT). Comparison with other theoretical prediction.
doi: 10.1103/PhysRevC.101.054001
2020AN15 Phys.Rev. C 102, 034611 (2020) Elastic α-12C scattering at low energies with the sharp resonant 0+3 state of 16O NUCLEAR REACTIONS 12C(α, α)16O*, E=2.6-6.62 MeV; analyzed experimental data for the phase shift; deduced parameters that appear in the scattering amplitudes; calculated asymptotic normalization constants for the ground state and the first excited 0+ state in 16O, with the inclusion of the sharp resonant, second excited 0+ state of 16O and the first excited 2+ state of 12C. Effective Lagrangian approach to derive a scattering amplitude for s-wave elastic scattering.
doi: 10.1103/PhysRevC.102.034611
2019AN11 Phys.Rev. C 100, 015807 (2019) SE1 factor of radiative α capture on 12C in cluster effective field theory NUCLEAR REACTIONS 12C(α, γ), E=0.1-3 MeV; calculated radiative capture amplitudes, and astrophysical SE1 factor at the Gamow-peak energy up to NLO in the standard counting rules using effective field theory. Comparison with experimental data. Discussed modification of the counting rules for the radiative capture amplitudes due to the enhancement of the p-wave dressed composite propagator of 16O. Relevance to determination of the C/O ratio in the stars.
doi: 10.1103/PhysRevC.100.015807
2018AN04 Phys.Rev. C 97, 014604 (2018) Elastic α-12C scattering at low energies with the bound states of 16O in effective field theory NUCLEAR REACTIONS 12C(α, α), E=2.6-6.6 MeV; analyzed effective range parameters to the phase-shift experimental data for elastic scattering for L=0, 1, 2, 3 below the resonance energies of 16O in effective field theory (EFT), by including the first excited 0+, 1-, 2+ and 3- bound states in 16O. 16O; calculated asymptotic normalization constants (ANCs) of first excited 0+, 1-, 2+ and 3- states. 12C(α, γ)16O; discussed uncertainties when the amplitudes are interpolated to the stellar energy region.
doi: 10.1103/PhysRevC.97.014604
2018GU05 Phys.Rev. C 97, 064323 (2018) Y.K.Gupta, K.B.Howard, U.Garg, J.T.Matta, M.Senyigit, M.Itoh, S.Ando, T.Aoki, A.Uchiyama, S.Adachi, M.Fujiwara, C.Iwamoto, A.Tamii, H.Akimune, C.Kadono, Y.Matsuda, T.Nakahara, T.Furuno, T.Kawabata, M.Tsumura, M.N.Harakeh, N.Kalantar-Nayestanaki Isoscalar giant monopole, dipole, and quadrupole resonances in 90, 92Zr and 92Mo NUCLEAR REACTIONS 90,92Zr, 92Mo(α, α'), (α, α), E=385 MeV; measured Eα, α(θ), double differential σ(E, θ) using Grand Raiden spectrometer of RCNP; deduced energies, widths, EWSR and moment ratios for isoscalar giant monopole (ISGMR), dipole (ISGDR), and quadrupole (ISGQR) strength distributions, Lorentzian parameters of distributions, collective structures not influenced by nuclear shell structure near A=90. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.97.064323
2018RA22 Phys.Rev. C 98, 034002 (2018) U.Raha, Y.Kamiya, S.-I.Ando, T.Hyodo Universal physics of the few-body system of two neutrons and one flavored meson
doi: 10.1103/PhysRevC.98.034002
2017SO10 Phys.Rev. C 96, 014001 (2017) Y.-H.Song, S.-I.Ando, C.H.Hyun Spin-polarization observables of deuteron photodisintegration at low energies in pionless effective-field theory NUCLEAR REACTIONS 2H(γ, np), (polarized γ, np), E=2-30 MeV; calculated unpolarized total σ(E) for deuteron photodisintegration, ratio of the unpolarized differential σ(θ) and total σ, polarized differential σ(θ, E), tensor analyzing powers T20(θ, E) and T22(θ, E), induced neutron polarization. Pionless effective field theory up to next-to-next-to-leading order (NNLO), and with dibaryon fields. Comparison with experimental data from High Intensity Gamma-Ray Source facility at Duke University.
doi: 10.1103/PhysRevC.96.014001
2016AN06 Int.J.Mod.Phys. E25, 1641005 (2016) Hypernuclei in halo/cluster effective field theory NUCLEAR STRUCTURE 4,6He; calculated two-hyperon separation energy, hyperon-hypertriton scattering length, Efimov states.
doi: 10.1142/S0218301316410056
2016AN08 Eur.Phys.J. A 52, 130 (2016) Elastic α-12C scattering at low energies in cluster effective field theory NUCLEAR REACTIONS 12C(α, γ), (α, α), E=0-6.5 MeV; calculated model parameters, phase shifts using the cluster effective field theory.
doi: 10.1140/epja/i2016-16130-2
2016GU13 Phys.Lett. B 760, 482 (2016) Y.K.Gupta, U.Garg, K.B.Howard, J.T.Matta, M.Senyigit, M.Itoh, S.Ando, T.Aoki, A.Uchiyama, S.Adachi, M.Fujiwara, C.Iwamoto, A.Tamii, H.Akimune, C.Kadono, Y.Matsuda, T.Nakahara, T.Furuno, T.Kawabata, M.Tsumura, M.N.Harakeh, N.Kalantar-Nayestanaki Are there nuclear structure effects on the isoscalar giant monopole resonance and nuclear incompressibility near A ∼ 90? NUCLEAR REACTIONS 90,92Zr, 92Mo(α, α'), E=385 MeV; measured reaction products, Eα, Iα; deduced σ(θ, E), isoscalar giant monopole resonance strength distributions.
doi: 10.1016/j.physletb.2016.07.021
2015AN09 Phys.Rev. C 92, 024325 (2015) Investigation of the Λ bound state in pionless effective theory
doi: 10.1103/PhysRevC.92.024325
2014AN01 Phys.Rev. C 89, 014318 (2014) ΛΛ4H in halo effective field theory NUCLEAR STRUCTURE 4H; calculated ΛΛ hyperon bound state, S-wave hypertriton-Λ scattering length in spin singlet and triplet channels below the hypertriton breakup momentum, two-hyperon separation energy, coupling parameter of three-body contact interaction as a function of the cutoff parameter. Halo/cluster effective field theory treating the double-hyperon 4H hypernucleus system as a three-cluster (Λ-Λ-deuteron) system.
doi: 10.1103/PhysRevC.89.014318
2014AN08 Phys.Rev. C 90, 037301 (2014) 6ΛΛHe in cluster effective field theory NUCLEAR STRUCTURE 6He; calculated correlations between the double hyperon separation energy (BΛΛ) of 6ΛΛHe hypernucleus, and the scattering length aΛΛ of the s-wave ΛΛ scattering. Three-body (ΛΛα) cluster system in cluster effective field theory at leading order. Comparison with experimental BΛΛ value.
doi: 10.1103/PhysRevC.90.037301
2014IT01 Phys.Rev.Lett. 113, 102501 (2014) M.Itoh, S.Ando, T.Aoki, H.Arikawa, S.Ezure, K.Harada, T.Hayamizu, T.Inoue, T.Ishikawa, K.Kato, H.Kawamura, Y.Sakemi, A.Uchiyama Further Improvement of the Upper Limit on the Direct 3α Decay from the Hoyle State in 12C NUCLEAR REACTIONS 12C(12C, 3α)12C, E=110 MeV; measured reaction products, Eα, Iα; deduced yields, Dalitz plots, Hoyle state, branching ratios, J, π. Comparison with available data.
doi: 10.1103/PhysRevLett.113.102501
2013SH40 Phys.Rev. C 88, 035501 (2013) J.W.Shin, C.H.Hyun, S.-I.Ando, S.W.Hong Polarization of the neutron induced by hadronic weak interactions in the photodisintegration of the deuteron NUCLEAR REACTIONS 2H(γ, n)p, E=2-15 MeV; calculated polarization observables of neutrons in photodisintegration of deuteron. Pionless field effect theory. Implication on the understanding of hadronic weak interactions.
doi: 10.1103/PhysRevC.88.035501
2012AN09 Phys.Rev. C 86, 024002 (2012) Effective range corrections from effective field theory with dibaryon fields and perturbative pions
doi: 10.1103/PhysRevC.86.024002
2011AN16 Phys.Rev. C 83, 064002 (2011) S.-I.Ando, Y.-H.Song, C.H.Hyun, K.Kubodera Spin polarization in γd → (n-pol)p at low energies with a pionless effective field theory NUCLEAR REACTIONS 2H(γ, n), E<30 MeV; calculated spin up/down differential cross sections, neutron polarization as function of incident energy and angle, σ(E, θ). Pionless effective field theory with dibaryon fields (dEFT) framework. Comparison with experimental data.
doi: 10.1103/PhysRevC.83.064002
2010AN11 J.Phys.(London) G37, 105108 (2010) Effective field theory of 3He NUCLEAR STRUCTURE 3H, 3He; calculated three-body forces; deduced importance of isospin symmetric three-body force, small contribution of Coulomb interaction.
doi: 10.1088/0954-3899/37/10/105108
2010AN16 Nucl.Phys. A844, 165c (2010) Hadronic weak interaction in the two-nucleon system with effective field theories
doi: 10.1016/j.nuclphysa.2010.05.029
2010SH10 Phys.Rev. C 81, 055501 (2010) Parity-violating polarization in np → dγ with a pionless effective field theory
doi: 10.1103/PhysRevC.81.055501
2008AN08 Phys.Rev. C 78, 024004 (2008) Renormalization-group analysis for low-energy scattering of charged particles
doi: 10.1103/PhysRevC.78.024004
2008DE18 Phys.Rev. C 77, 064002 (2008) B.Desplanques, C.H.Hyun, S.Ando, C.-P.Liu Parity-violating nucleon-nucleon interaction from different approaches NUCLEAR REACTIONS p(polarized p, p), p(polarized n, γ)E=13.6, 45, 221 MeV; calculated spectral functions, dependence of total potential energy on charge and radius, PV asymmetries. Effective field theory. Comparison with covariant approach.
doi: 10.1103/PhysRevC.77.064002
2007AN27 Eur.Phys.J. A 33, 185 (2007) pp → ppπ0 near threshold in pionless effective theory
doi: 10.1140/epja/i2007-10448-8
2007AN32 Phys.Rev. C 76, 064001 (2007) S.Ando, J.W.Shin, C.H.Hyun, S.-W.Hong Low energy proton-proton scattering in effective field theory NUCLEAR REACTIONS p(p, X), E not given; calculated scattering amplitudes using pionless effective field theory.
doi: 10.1103/PhysRevC.76.064001
2007HY01 Eur.Phys.J. A 32, 513 (2007) C.H.Hyun, S.Ando, B.Desplanques Two-pion-exchange parity-violating potential and np → dγ
doi: 10.1140/epja/i2006-10426-8
2006AN03 Phys.Lett. B 633, 253 (2006) Neutron-neutron fusion NUCLEAR REACTIONS 1n(n, d), E≤thermal; calculated σ and electron energy spectra. Pionless effective field theory.
doi: 10.1016/j.physletb.2005.11.085
2006AN16 Phys.Rev. C 74, 025809 (2006) S.Ando, R.H.Cyburt, S.W.Hong, C.H.Hyun Radiative neutron capture on a proton at big-bang nucleosynthesis energies NUCLEAR REACTIONS 1H(n, γ), E(cm) ≈ 0-1 MeV; 2H(γ, n), E(cm) ≈ 0-1 MeV; calculated total σ. 2H(polarized γ, n), E ≈ 0-1 MeV; calculate analyzing power.
doi: 10.1103/PhysRevC.74.025809
2006AN34 Phys.Rev. D 74, 094013 (2006) Leading chiral corrections to the nucleon generalized parton distributions NUCLEAR STRUCTURE A=1; calculated chiral corrections to generalized parton distributions.
doi: 10.1103/PhysRevD.74.094013
2006NA27 Phys.Rev. C 74, 034004 (2006); Erratum Phys.Rev. C 76, 069902 (2007) Renormalization group analysis of nuclear current operators
doi: 10.1103/PhysRevC.74.034004
2006YU06 Phys.Rev. C 74, 015803 (2006) Direct measurement of supernova neutrino emission parameters with a gadolinium-enhanced Super-Kamiokande detector
doi: 10.1103/PhysRevC.74.015803
2005AN16 Phys.Rev. C 72, 014008 (2005) Effective field theory of the deuteron with dibaryon fields NUCLEAR REACTIONS 2H(e, e), E not given; calculated form factors. 1H(n, γ), E=0-1 MeV; calculated δ, magnetic dipole contributions. Pionless effective field theory, comparison with data.
doi: 10.1103/PhysRevC.72.014008
2004AN13 Phys.Lett. B 595, 250 (2004) S.Ando, H.W.Fearing, V.Gudkov, K.Kubodera, F.Myhrer, S.Nakamura, T.Sato Neutron beta-decay in effective field theory RADIOACTIVITY 1n(β-); calculated T1/2, angular correlation coefficients, radiative corrections. Effective field theory.
doi: 10.1016/j.physletb.2004.06.037
2003AN03 Phys.Lett. B 555, 49 (2003) S.Ando, Y.H.Song, T.-S.Park, H.W.Fearing, K.Kubodera Solar-neutrino reactions on deuteron in effective field theory NUCLEAR REACTIONS 2H(ν, ep), (ν-bar, e+n), (ν, ν'p), (ν-bar, ν-bar'p), E=spectrum; calculated σ for solar neutrinos. Effective field theory.
doi: 10.1016/S0370-2693(03)00046-7
2003AN31 Nucl.Phys. A721, 541c (2003) Detectability of the Supernova Relic Neutrinos
doi: 10.1016/S0375-9474(03)01119-9
2003NA23 Nucl.Phys. A718, 437c (2003) S.Nagataki, K.Kohri, S.Ando, K.Sato Gamma-ray burst neutrino background and star formation history in the universe
doi: 10.1016/S0375-9474(03)00824-8
2003NA32 Nucl.Phys. A721, 549c (2003) S.Nakamura, T.Sato, S.Ando, T.-S.Park, F.Myhrer, V.Gudkov, K.Kubodera Neutrino-deuteron reactions at solar neutrino energies NUCLEAR REACTIONS 2H(ν, ep), (ν, νn), E=5, 10, 20 MeV; calculated σ. 2H(ν, X), E=0-20 MeV; calculated total charged-current σ.
doi: 10.1016/S0375-9474(03)01121-7
2002AN02 Phys.Rev. C65, 015502 (2002) S.-I.Ando, H.W.Fearing, D.-P.Min Polarized Photons in Radiative Muon Capture NUCLEAR REACTIONS 1H(μ-, νγ), E not given; calculated Eγ, γ-ray polarization, sensitivity to pseudoscalar coupling constant.
doi: 10.1103/PhysRevC.65.015502
2002AN08 Phys.Rev. C65, 048501 (2002) S.-I.Ando, F.Myhrer, K.Kubodera Ordinary and Radiative Muon Capture in Liquid Hydrogen Reexamined NUCLEAR REACTIONS 1H(μ, ν), E at rest; analyzed ordinary and radiative capture rates.
doi: 10.1103/PhysRevC.65.048501
2002AN10 Phys.Lett. 533B, 25 (2002) S.Ando, T.-S.Park, K.Kubodera, F.Myhrer The μ-d Capture Rate in Effective Field Theory NUCLEAR REACTIONS 2H(μ-, ν), E at rest; calculated capture rate vs final-state energy. Heavy baryon chiral perturbation theory.
doi: 10.1016/S0370-2693(02)01619-2
2002NA19 Nucl.Phys. A707, 561 (2002) S.Nakamura, T.Sato, S.Ando, T.-S.Park, F.Myhrer, V.Gudkov, K.Kubodera Neutrino-Deuteron Reactions at Solar Neutrino Energies NUCLEAR REACTIONS 2H(ν, ep), (ν, νp), E=1.5-20.0 MeV; calculated σ. Effective field theory.
doi: 10.1016/S0375-9474(02)00993-4
2002SA64 Prog.Theor.Phys.(Kyoto), Suppl. 146, 212 (2002) Neutrino Burst from Supernovae and Neutrino Oscillation
doi: 10.1143/PTPS.146.212
2001AN01 Phys.Rev. C63, 015203 (2001) S.-I.Ando, F.Myhrer, K.Kubodera Capture Rate and Neutron Helicity Asymmetry for Ordinary Muon Capture on Hydrogen NUCLEAR REACTIONS 1H(μ-, ν), E at rest; calculated muon capture rate, neutron helicity asymmetry. Heavy-baryon chiral perturbation theory. ATOMIC PHYSICS, Mesic-atoms 1H(μ-, ν), E at rest; calculated muon capture rate, neutron helicity asymmetry. Heavy-baryon chiral perturbation theory.
doi: 10.1103/PhysRevC.63.015203
2001AN18 Phys.Lett. 509B, 253 (2001) S.-I.Ando, T.-S.Park, D.-P.Min Threshold pp → ppπ0 Up to One-Loop Accuracy NUCLEAR REACTIONS 1H(p, pπ0), E ≈ threshold; calculated σ; deduced one-loop contributions. Hybrid heavy baryon chiral perturbation theory, comparisons with data.
doi: 10.1016/S0370-2693(01)00433-6
1998AN04 Phys.Lett. 417B, 177 (1998) Radiative Muon Capture in Heavy Baryon Chiral Perturbation Theory NUCLEAR REACTIONS 1H(μ-, γ), E not given; calculated photon spectra; deduced one-loop order corrections. Comparison with data. Heavy baryon chiral perturbation theory.
doi: 10.1016/S0370-2693(97)01367-1
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