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NSR database version of May 20, 2024.

Search: Author = S.X.Nakamura

Found 16 matches.

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2020IS04      Phys.Rev. C 101, 052201 (2020)

T.Ishikawa, H.Fujimura, H.Fukasawa, R.Hashimoto, Q.He, Y.Honda, A.Hosaka, T.Iwata, S.Kaida, J.Kasagi, A.Kawano, S.Kuwasaki, K.Maeda, S.Masumoto, M.Miyabe, F.Miyahara, K.Mochizuki, N.Muramatsu, A.Nakamura, S.X.Nakamura, K.Nawa, S.Ogushi, Y.Okada, K.Okamura, Y.Onodera, K.Ozawa, Y.Sakamoto, M.Sato, T.Sato, H.Shimizu, H.Sugai, K.Suzuki, Y.Tajima, S.Takahashi, Y.Taniguchi, Y.Tsuchikawa, H.Yamazaki, R.Yamazaki, H.Y.Yoshida

wN scattering length from w photoproduction on the proton near the reaction threshold

NUCLEAR REACTIONS 1H(γ, ω), E=1.09-1.15 GeV; measured Eγ, Iγ, differential σ(θ), and total σ(Eγ) using the FOREST detector at the Research Center for Electron Photon Science of Tohoku University; deduced scattering parameters, spin-averaged scattering length, and effective range. Comparison with other experimental results and with theoretical predictions.

doi: 10.1103/PhysRevC.101.052201
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2019RO17      Phys.Rev. C 100, 045503 (2019)

N.Rocco, S.X.Nakamura, T.-S.H.Lee, A.Lovato

Electroweak pion production on nuclei within the extended factorization scheme

NUCLEAR REACTIONS 12C(e, e'π), E=620, 730, 961, 1650 MeV; 12C(ν, ν'), (ν, μ-), E=1.0 GeV; 1H(e, e'π0), (e, e'π+), Q2=0.4, 1.76, 2.95 MeV; 1H(ν, μ-π+), 1n(ν, μ-π0), (ν, μ-π+), E<2.25 GeV muon neutrinos; calculated double differential σ(E) using the dynamical coupled-channel (DCC) ANL-Osaka model and Metropolis Monte Carlo integration techniques for generating the matrix elements of current operators relevant to pion production off the nucleon. Comparison with experimental data from ANL and BNL.

doi: 10.1103/PhysRevC.100.045503
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2018NA23      Phys.Rev. C 98, 042201 (2018)

S.X.Nakamura

Extraction of γn → πN observables from deuteron-target data

NUCLEAR REACTIONS 2H(γ, π-), (γ, π0), (polarized γ, π-), (polarized γ, π0), E=300, 500, 720, 1000 MeV; calculated unpolarized differential σ(θ), polarization observables, pion angular distributions, and proton momentum distribution using a model consisting of impulse term and the final-state interaction (FSI) terms due to nucleon and pion exchange, with and without a cut on the final πN invariant mass. Comparison with experimental data, and with other theoretical calculations.

doi: 10.1103/PhysRevC.98.042201
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2017NA08      Rep.Prog.Phys. 80, 056301 (2017)

S.X.Nakamura, H.Kamano, Y.Hayato, M.Hirai, W.Horiuchi, S.Kumano, T.Murata, K.Saito, M.Sakuda, T.Sato, Y.Suzuki

Towards a unified model of neutrino-nucleus reactions for neutrino oscillation experiments

doi: 10.1088/1361-6633/aa5e6c
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2017NA29      Phys.Rev. C 96, 042201 (2017)

S.X.Nakamura, H.Kamano, T.Ishikawa

Low-energy η nucleon interaction studied with η photoproduction off the deuteron

NUCLEAR REACTIONS 1H(γ, pη), E=1498-1700 MeV; 2H(γ, npη), E=720, 775 MeV; calculated differential σ(θ, E) and compared with experimental data. 2H(γ, npη), E=0.94 GeV; calculated threefold differential cross sections as function of Mηn. Dynamical coupled-channels (DCC) model. Relevance to planned η photoproduction experiment at the Research Center for Electron Photon Science (ELPH), Tohoku University.

doi: 10.1103/PhysRevC.96.042201
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2016KA31      Phys.Rev. C 94, 015201 (2016)

H.Kamano, S.X.Nakamura, T.-S.H.Lee, T.Sato

Isospin decomposition of γN → N* transitions within a dynamical coupled-channels model

NUCLEAR REACTIONS 1n(γ, π-)p, E=1101-1996 MeV; 1n(γ, π0)n, E=1202-1912 MeV; 1H(γ, π0)p, E=1869-2092 MeV; 1H(γ, π+)n, E=1313-2092 MeV; analyzed σ(θ), photon asymmetry, target polarization and recoil polarization using database of the INS DAC Services at GWU; deduced transition amplitudes for photoexcitation of the neutron-to-nucleon resonances, helicity amplitudes. Dynamical coupled-channels analysis.

doi: 10.1103/PhysRevC.94.015201
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2015KA32      Phys.Rev. C 92, 025205 (2015); Erratum Phys.Rev. C 95, 049903 (2017)

H.Kamano, S.X.Nakamura, T.-S.H.Lee, T.Sato

Dynamical coupled-channels model of K-p reactions. II. Extraction of Λ* and Σ* hyperon resonances

doi: 10.1103/PhysRevC.92.025205
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2014KA49      Phys.Rev. C 90, 065204 (2014)

H.Kamano, S.X.Nakamura, T.-S.H.Lee, T.Sato

Dynamical coupled-channels model of K-p reactions: Determination of partial-wave amplitudes

doi: 10.1103/PhysRevC.90.065204
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2013KA41      Phys.Rev. C 88, 035209 (2013)

H.Kamano, S.X.Nakamura, T.-S.H.Lee, T.Sato

Nucleon resonances within a dynamical coupled-channels model of πN and γN reactions

doi: 10.1103/PhysRevC.88.035209
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2010KA20      Phys.Rev. C 81, 065207 (2010)

H.Kamano, S.X.Nakamura, T.-S.H.Lee, T.Sato

Extraction of P11 resonances from πN data

doi: 10.1103/PhysRevC.81.065207
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2010NA04      Phys.Rev. C 81, 035502 (2010)

S.X.Nakamura, T.Sato, T.-S.H.Lee, B.Szczerbinska, K.Kubodera

Dynamical model of coherent pion production in neutrino-nucleus scattering

NUCLEAR REACTIONS 12C(π-, X), E=75-275 MeV; calculated total cross section. 12C(π+, π+), E=40, 80 MeV; 12C(π-, π-), E=120, 180, 230, 280 MeV; 12C(γ, π0), E=173 MeV; 12C(γ, π0), E(cm)=200, 290, 350 MeV; calculated σ(θ) of differential cross section. 12C(ν, X), E=0.2-1.5 GeV; calculated σ, pion and muon momentum distributions. Microscopic dynamical model describing neutrino-induced coherent pion production. Comparisons with experimental data.

doi: 10.1103/PhysRevC.81.035502
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2009NA26      Phys.Rev. C 80, 035802 (2009)

S.X.Nakamura, K.Sumiyoshi, T.Sato

Neutrino deuteron reaction in the heating mechanism of core-collapse supernovae

NUCLEAR REACTIONS 2H(ν, e2p), (ν, e+2n), (ν, ν'np), (ν, d), E=0-140 MeV; calculated total σ and energy transfer cross sections reactions with the phenomenological Lagrangian approach. Comparison with ν+3H, ν+3He and ν+4He reactions.

doi: 10.1103/PhysRevC.80.035802
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2008NA10      Phys.Rev. C 77, 054001 (2008)

S.X.Nakamura

Bridging p-wave π production and weak processes in few-nucleon systems with chiral perturbation theory

doi: 10.1103/PhysRevC.77.054001
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2007NA21      Nucl.Phys. A790, 422c (2007)

S.X.Nakamura

Renormalization group analysis of nuclear force

doi: 10.1016/j.nuclphysa.2007.03.075
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2006NA27      Phys.Rev. C 74, 034004 (2006); Erratum Phys.Rev. C 76, 069902 (2007)

S.X.Nakamura, S.Ando

Renormalization group analysis of nuclear current operators

doi: 10.1103/PhysRevC.74.034004
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2005NA27      Prog.Theor.Phys.(Kyoto) 114, 77 (2005)

S.X.Nakamura

Consideration of Nuclear Forces from the Viewpoint of the Renormalization Group - Relation of Nuclear Forces between Phenomenological Approach and Nuclear Effective Field Theory-

doi: 10.1143/PTP.114.77
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