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Search: Author = M.Morita

Found 41 matches.

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2007SU23      Phys.Lett. B 657, 32 (2007)

M.Sumihama, J.K.Ahn, H.Akimune, Y.Asano, W.C.Chang, S.Date, H.Ejiri, H.Fujimura, M.Fujiwara, K.Hicks, T.Hotta, K.Imai, T.Ishikawa, T.Iwata, H.Kawai, Z.Y.Kim, K.Kino, H.Kohri, N.Kumagai, S.Makino, T.Matsumura, N.Matsuoka, T.Mibe, M.Miyabe, Y.Miyachi, M.Morita, N.Muramatsu, T.Nakano, M.Niiyama, M.Nomachi, Y.Ohashi, H.Ohkuma, T.Ooba, D.S.Oshuev, C.Rangacharyulu, A.Sakaguchi, T.Sato, P.M.Shagin, Y.Shiino, H.Shimizu, Y.Sugaya, H.Toyokawa, A.Wakai, C.W.Wang, S.C.Wang, K.Yonehara, T.Yorita, M.Yosoi, R.G.T.Zegers

Backward-angle photoproduction of π0 mesons on the proton at Eγ = 1.5-2.4 GeV

NUCLEAR REACTIONS 1H(polarized γ, π0), E=1.5-2.4 GeV; measured missing mass spectra, σ(E, θ), beam asymmetry.

doi: 10.1016/j.physletb.2007.10.032
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2114.


2005IS02      Phys.Lett. B 608, 215 (2005)

T.Ishikawa, D.S.Ahn, J.K.Ahn, H.Akimune, W.C.Chang, S.Date, H.Fujimura, M.Fujiwara, K.Hicks, T.Hotta, K.Imai, H.Kawai, K.Kino, H.Kohri, T.Matsumura, T.Mibe, K.Miwa, M.Miyabe, M.Morita, T.Murakami, N.Muramatsu, H.Nakamura, M.Nakamura, T.Nakano, M.Niiyama, M.Nomachi, Y.Ohashi, T.Ooba, D.S.Oshuev, C.Rangacharyulu, A.Sakaguchi, Y.Shiino, Y.Sakemi, H.Shimizu, Y.Sugaya, M.Sumihama, Y.Toi, H.Toyokawa, C.W.Wang, T.Yorita, M.Yosoi, R.G.T.Zegers

φ photo-production from Li, C, Al, and Cu nuclei at Eγ = 1.5-2.4 GeV

NUCLEAR REACTIONS Li, C, Al, Cu(γ, X), E=1.5-2.4 GeV; measured kaon pair invariant mass spectra, φ mesons photoproduction σ; deduced target mass dependence, φ-nucleon interaction total σ.

doi: 10.1016/j.physletb.2005.01.023
Citations: PlumX Metrics


2003MI24      Nucl.Phys. A721, 477c (2003)

K.Minamisono, K.Matsuta, T.Minamisono, T.Yamaguchi, T.Sumikama, T.Nagatomo, M.Ogura, T.Iwakoshi, M.Mihara, M.Fukuda, K.Koshigiri, M.Morita

G-Parity Irregular Current in the β Decays of the Mass A = 12 System - with the Refined Empirical Value of the Weak Magnetism -

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(β+) [from 10B(3He, n)]; measured Eβ, angular distributions from spin-aligned sources; deduced G-parity irregular induced tensor coefficient.

doi: 10.1016/S0375-9474(03)01103-5
Citations: PlumX Metrics


2003NA08      Phys.Rev.Lett. 91, 012002 (2003)

T.Nakano, D.S.Ahn, J.K.Ahn, H.Akimune, Y.Asano, W.C.Chang, S.Date, H.Ejiri, H.Fujimura, M.Fujiwara, K.Hicks, T.Hotta, K.Imai, T.Ishikawa, T.Iwata, H.Kawai, Z.Y.Kim, K.Kino, H.Kohri, N.Kumagai, S.Makino, T.Matsumura, N.Matsuoka, T.Mibe, K.Miwa, M.Miyabe, Y.Miyachi, M.Morita, N.Muramatsu, M.Niiyama, M.Nomachi, Y.Ohashi, T.Ooba, H.Ohkuma, D.S.Oshuev, C.Rangacharyulu, A.Sakaguchi, T.Sasaki, P.M.Shagin, Y.Shiino, H.Shimizu, Y.Sugaya, M.Sumihama, H.Toyokawa, A.Wakai, C.W.Wang, S.C.Wang, K.Yonehara, T.Yorita, M.Yoshimura, M.Yosoi, R.G.T.Zegers

Evidence for a Narrow S = +1 Baryon Resonance in Photoproduction from the Neutron

NUCLEAR REACTIONS 12C(γ, K+K-), E ≈ 1.5-2.4 GeV; measured kaon missing mass spectra; deduced baryon resonance features.

doi: 10.1103/PhysRevLett.91.012002
Citations: PlumX Metrics


2003ZE04      Phys.Rev.Lett. 91, 092001 (2003)

R.G.T.Zegers, M.Sumihama, D.S.Ahn, J.K.Ahn, H.Akimune, Y.Asano, W.C.Chang, S.Date, H.Ejiri, H.Fujimura, M.Fujiwara, K.Hicks, T.Hotta, K.Imai, T.Ishikawa, T.Iwata, H.Kawai, Z.Y.Kim, K.Kino, H.Kohri, N.Kumagai, S.Makino, T.Matsumura, N.Matsuoka, T.Mibe, K.Miwa, M.Miyabe, Y.Miyachi, M.Morita, N.Muramatsu, T.Nakano, M.Niiyama, M.Nomachi, Y.Ohashi, T.Ooba, H.Ohkuma, D.S.Oshuev, C.Rangacharyulu, A.Sakaguchi, T.Sasaki, P.M.Shagin, Y.Shiino, H.Shimizu, Y.Sugaya, H.Toyokawa, A.Wakai, C.W.Wang, S.C.Wang, K.Yonehara, T.Yorita, M.Yoshimura, M.Yosoi

Beam-Polarization Asymmetries for the p(γ(pol), K+)Λ and p(γ(pol), K+0 Reactions for Eγ = 1.5-2.4 GeV

NUCLEAR REACTIONS 1H(polarized γ, K+X), E=1.5-2.4 GeV; measured hyperon production associated beam polarization asymmetries. Comparison with model predictions.

doi: 10.1103/PhysRevLett.91.092001
Citations: PlumX Metrics


2002MI03      Phys.Rev. C65, 015501 (2002)

K.Minamisono, K.Matsuta, T.Minamisono, T.Yamaguchi, T.Sumikama, T.Nagatomo, M.Ogura, T.Iwakoshi, M.Fukuda, M.Mihara, K.Koshigiri, M.Morita

New Limit of the G-Parity Irregular Weak Nucleon Current Detected in β Decays of Spin Aligned 12B and 12N

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(β+) [from 10B(3He, n)]; measured Eβ, angular distributions from spin-aligned sources; deduced tensor form factor, constraints on Kubodera-Delorme-Rho parameters.

doi: 10.1103/PhysRevC.65.015501
Citations: PlumX Metrics


2002MI36      Z.Naturforsch. 57a, 557 (2002)

K.Minamisono, K.Matsuta, T.Minamisono, T.Yamaguchi, T.Sumikama, T.Nagatomo, M.Ogura, T.Iwakoshi, M.Mihara, M.Fukuda, K.Koshigiri, M.Morita

Spin Manipulation by Use of Nuclear Quadrupole Interactions - Quarks and Medium Effects in the Nucleus

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(EC) [from 10B(3He, n)]; measured Eβ, Iβ(θ, H, t) from oriented nuclei; deduced alignment correlation terms, axial charge, in-medium nucleon mass renormalization.


2002MI49      Prog.Theor.Phys.(Kyoto), Suppl. 146, 268 (2002)

T.Minamisono, K.Minamisono, K.Matsuta, M.Fukuda, M.Mihara, K.Koshigiri, M.Morita

β Decays of Nucleons and Quarks Embedded in the Nucleus

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(EC) [from 10B(3He, n)]; measured Eβ, Iβ(θ, H, t) from polarized sources; deduced in-medium nucleon mass renormalization, induced tensor form factor.

doi: 10.1143/PTPS.146.268
Citations: PlumX Metrics


2000MI11      Nucl.Phys. A663-664, 951c (2000)

K.Minamisono, T.Yamaguchi, T.Sumikama, T.Nagatomo, K.Matsuta, T.Minamisono, M.Fukuda, K.Koshigiri, M.Morita

G-Parity Violation of Weak Nucleon Current and In-Medium Mass Renormalization of Nucleons Detected Through the β Decays of Spin Aligned 12B and 12N

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(β+) [from 10B(3He, n)]; measured β angular distributions from aligned nuclei; deduced axial charge, in-medium mass reduction of decaying nucleon.

doi: 10.1016/S0375-9474(99)00805-2
Citations: PlumX Metrics


1999MI41      Nucl.Phys. (Supplement) A654, 955c (1999)

K.Minamisono, T.Yamaguchi, K.Matsuta, T.Minamisono, T.Ikeda, Y.Muramoto, M.Fukuda, Y.Nojiri, A.Kitagawa, K.Koshigiri, M.Morita

New Limit of the G-Parity Irregular Induced Tensor Current and the Axial Charge in the Weak Nucleon Current Detected in Alignment Correlation Terms of 12B and 12N β Decay

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(β-) [from 10B(3He, n)]; measured Eβ, Iβ(θ) from aligned nuclei; deduced G-parity violating induced tensor form factor.

doi: 10.1016/S0375-9474(00)88580-2
Citations: PlumX Metrics


1998MI14      Phys.Rev.Lett. 80, 4132 (1998)

T.Minamisono, K.Matsuta, T.Yamaguchi, K.Minamisono, T.Ikeda, Y.Muramoto, M.Fukuda, Y.Nojiri, A.Kitagawa, K.Koshigiri, M.Morita

New Limit of the G-Parity Irregular Weak Nucleon Current Disclosed in β-Ray Angular Distributions from Spin Aligned 12B and 12N

RADIOACTIVITY 12B(β-) [from 11B(d, p)]; 12N(β+) [from 10B(3He, n)]; measured β-ray angular distribution from oriented nuclei; deduced nonzero G-parity violating induced tensor form factor. β-NMR technique.

doi: 10.1103/PhysRevLett.80.4132
Citations: PlumX Metrics


1995KO28      Nucl.Phys. A588, 165c (1995)

K.Koshigiri, R.Morita, M.Morita

Structure of Weak Nucleon Currents and Charge Asymmetry in Nuclear Beta Decay

RADIOACTIVITY 12B(β-); 12N(β+); analyzed Iβ(θ); deduced ft value, y asymmetry characteristics, induced tensor coupling constant. Models incorporating binding energy effects in nucleon wave function.

doi: 10.1016/0375-9474(95)00118-K
Citations: PlumX Metrics


1994MO23      Nucl.Phys. A577, 387c (1994)

M.Morita, R.Morita, K.Koshigiri

Induced Terms of Weak Nucleon Currents in Light Nuclei

RADIOACTIVITY 12B(β-); 12N(β+); analyzed Iβ(θ) data, aligned nuclei; deduced induced tensor current limit, axial charge.

doi: 10.1016/0375-9474(94)90885-0
Citations: PlumX Metrics


1993MO30      Hyperfine Interactions 78, 85 (1993)

M.Morita, R.Morita, M.Doi, T.Sato, H.Ohtsubo, K.Koshigiri

Induced Pseudoscalar Interaction in Weak Nucleon Current and Muon Capture in Hyperfine States of Muonic Deuterium

ATOMIC PHYSICS, Mesic-Atoms 2H; calculated muon capture rate in muonic deuterium.

doi: 10.1007/BF00568120
Citations: PlumX Metrics


1992MO33      Z.Phys. C56, S156 (1992)

M.Morita, R.Morita

Muon capture in hyperfine states of muonic deuterium and induced pseudoscalar form factor

NUCLEAR REACTIONS 2H(μ-, X), E at rest; calculated capture rates from hyperfine states of muonic deuterium.

ATOMIC PHYSICS 2H(μ-, X), E at rest; calculated capture rates from hyperfine states of muonic deuterium.

doi: 10.1007/BF02426791
Citations: PlumX Metrics


1990DO01      Nucl.Phys. A511, 507 (1990)

M.Doi, T.Sato, H.Ohtsubo, M.Morita

Effect of Meson Exchange Current on Deuteron Muon Capture

NUCLEAR REACTIONS 2H(μ-, 2n), E at rest; calculated neutron spectra, ν asymmetry. Meson exchange model, Siegert theorem.

doi: 10.1016/0375-9474(90)90107-W
Citations: PlumX Metrics


1987FU13      Prog.Theor.Phys.(Kyoto) 78, 343 (1987)

M.Fukui, K.Koshigiri, T.Sato, H.Ohtsubo, M.Morita

Polarizations of 12B in Muon Capture Reaction with Higher Order Configuration Mixing

NUCLEAR REACTIONS 12C(polarized μ-, ν)12B, E not given; calculated 12B polarization; deduced pseudoscalar to axial coupling constant ratio (g(p)/g(A)). 12C(e, e'), E=80-330 MeV; calculated M1 form factor.

doi: 10.1143/PTP.78.343
Citations: PlumX Metrics


1987WA26      Prog.Theor.Phys.(Kyoto) 78, 114 (1987)

R.Watanabe, M.Fukui, H.Ohtsubo, M.Morita

Angular Distribution of Electrons in Bound Muon Decay

ATOMIC PHYSICS, Mesic-Atoms 16O, 40Ca, 90Zr, 208Pb; calculated bound muon decay characteristics, σ(θ(e)).

doi: 10.1143/PTP.78.114
Citations: PlumX Metrics


1985KO39      Prog.Theor.Phys.(Kyoto) 74, 736 (1985)

K.Koshigiri, Y.Kakudo, H.Ohtsubo, M.Morita

Muon Capture in Complex Nuclei of Nonzero Spin

NUCLEAR REACTIONS 13C, 14N(μ-, ν), E at rest; calculated partial muon capture rate, recoil nucleus longitudinal, average polarizations, average alignments; deduced (gp/gA) determination sifnificance.

doi: 10.1143/PTP.74.736
Citations: PlumX Metrics


1985MO13      Hyperfine Interactions 21, 143 (1985)

M.Morita

Weak Nucleon Currents in Beta Decay and Muon Capture

RADIOACTIVITY 12B(β-), 12N(β+); calculated β-spectral shape factors; analyzed Iβ(θ), oriented nuclei; deduced weak interaction, induced pseudoscalar, axial vector current form factors.

doi: 10.1007/BF02061982
Citations: PlumX Metrics


1984KO24      Prog.Theor.Phys.(Kyoto) 71, 1293 (1984)

K.Koshigiri, H.Ohtsubo, M.Morita

Muon Capture in 11B Muonic Atom and Hyperfine Spin Dependence

NUCLEAR REACTIONS 11B(μ-, n), E at rest; calculated total muon capture rate hyperfine state dependence, σ(En). 10Be levels deduced (gp/gA) dependence. Continuum shell model.

ATOMIC PHYSICS, Mesic-Atoms 11B; calculated muonic hyperfine state capture rate; deduced hyperfine state spin dependence.

doi: 10.1143/PTP.71.1293
Citations: PlumX Metrics


1983FU15      Phys.Lett. 132B, 255 (1983)

M.Fukui, K.Koshigiri, T.Sato, H.Ohtsubo, M.Morita

The Average Polarization of 12B in the Muon Capture Reaction

NUCLEAR REACTIONS 12C(μ-, ν), E at rest; analyzed recoil 12B polarization; deduced (gp/g(A)). Multi-configurational shell model wave functions.

doi: 10.1016/0370-2693(83)90301-5
Citations: PlumX Metrics


1983FU17      Prog.Theor.Phys.(Kyoto) 70, 827 (1983)

M.Fukui, K.Koshigiri, T.Sato, H.Ohtsubo, M.Morita

Nuclear Polarization of 12B in Muon Capture Reaction

NUCLEAR REACTIONS 12C(μ-, ν), E at rest; calculated average, longitudinal 12B recoil polarization; deduced (gp/g(A)). Multi-configuration shell model.

doi: 10.1143/PTP.70.827
Citations: PlumX Metrics


1982KO27      Prog.Theor.Phys.(Kyoto) 68, 687 (1982)

K.Koshigiri, H.Ohtsubo, M.Morita

Munon Capture in Hyperfine States of 11B Muonic Atom

ATOMIC PHYSICS, Mesic-Atoms 11B; calculated muonic hyperfine state capture rates vs pseudoscalar coupling constant. Different nuclear models.

doi: 10.1143/PTP.68.687
Citations: PlumX Metrics


1981AM05      Prog.Theor.Phys.(Kyoto) 65, 632 (1981)

H.Ami, M.Kobayashi, H.Ohtsubo, M.Morita

Longitudinal Polarization of 12B in Muon Capture Reaction

NUCLEAR REACTIONS 12C(μ-, ν), E at rest; calculated longitudinal polarization of 12B; deduced excited state effects, time reversal invariance validity. Vector, axial vector current, lepton current, current-current interactions.

doi: 10.1143/PTP.65.632
Citations: PlumX Metrics


1981KO27      Prog.Theor.Phys.(Kyoto) 66, 358 (1981)

K.Koshigiri, H.Ohtsubo, M.Morita

Core Polarization and Exchange Current Effects on Time Component of Axial Vector Current in A = 12 System

NUCLEAR STRUCTURE A=12; calculated axial vector current time component matrix element. Core polarization, exchange current effects.

doi: 10.1143/PTP.66.358
Citations: PlumX Metrics


1979KO12      Nucl.Phys. A319, 301 (1979)

K.Koshigiri, M.Nishimura, H.Ohtsubo, M.Morita

Beta-Ray Spectra of 12B and 12N and Conserved Vector Current

NUCLEAR STRUCTURE 12B, 12N; calculated β-spectra shape factors. Formalism treats lepton wave functions exactly, nuclear-matrix elements independent of electron energy.

doi: 10.1016/0375-9474(79)90517-7
Citations: PlumX Metrics


1979KO39      Prog.Theor.Phys.(Kyoto) 62, 706 (1979)

K.Koshigiri, H.Ohtsubo, M.Morita

Nuclear Structure Effects on Weak Nuclear Form Factors of 0+-0- Transitions in A=16 System

NUCLEAR STRUCTURE 16O, 16N; calculated muon capture rate/β-decay rate. Realistic nuclear models, exact lepton wave functions.

doi: 10.1143/PTP.62.706
Citations: PlumX Metrics


1978KO31      Nucl.Phys. A312, 377 (1978)

M.Kobayashi, N.Ohtsuka, H.Ohtsubo, M.Morita

Average Polarization of 12B in Polarized Muon Capture

NUCLEAR REACTIONS 12C(polarized μ-, ν), E=at rest; calculated average polarization of recoil nucleus. Compared with data. Deduced ratio (g(p)-g(t))/gA.

doi: 10.1016/0375-9474(78)90598-5
Citations: PlumX Metrics


1978MO02      Phys.Lett. 73B, 17 (1978)

M.Morita, M.Nishimura, H.Ohtsubo

Beta-Ray Angular Distribution in Aligned 12B and 12N and G-Parity Irregular Induced Tensor Current

RADIOACTIVITY 12B, 12N; calculated β(θ).

doi: 10.1016/0370-2693(78)90160-0
Citations: PlumX Metrics


1975KU19      Nucl.Phys. A251, 465 (1975)

K.Kume, N.Ohtsuka, H.Ohtsubo, M.Morita

Asymmetry and Energy Spectrum of High-Energy Neutrons Emitted in Polarized Muon Capture by Nuclei

NUCLEAR REACTIONS 40Ca(μ-, n); calculated number of neutrons per muon capture.

doi: 10.1016/0375-9474(75)90542-4
Citations: PlumX Metrics


1973OH04      Progr.Theor.Phys. 49, 701 (1973)

H.Ohtsubo, Y.Yokoo, M.Morita

Internal Conversion Coefficients for Electron Spin Polarized Fe57. II

NUCLEAR STRUCTURE 57Fe; calculated ICC.

doi: 10.1143/PTP.49.701
Citations: PlumX Metrics


1973OH05      Progr.Theor.Phys. 49, 877 (1973)

H.Ohtsubo, M.Sano, M.Morita

Relativistic Corrections to Nuclear Magnetic Moments and Gamow-Teller Matrix Elements of Beta Decay

NUCLEAR STRUCTURE A=11-43; 88Sr, 114Sn, 208Pb; calculated nuclear magnetic moment.

doi: 10.1143/PTP.49.877
Citations: PlumX Metrics


1973OT01      Progr.Theor.Phys. 50, 1771 (1973)

K.Otozai, R.Arakawa, M.Morita

Experimental Evidence for Nuclear Excitation by Electron Transition in 189Os

RADIOACTIVITY 189mOs; measured T1/2.

doi: 10.1143/PTP.50.1771
Citations: PlumX Metrics


1973YO04      Progr.Theor.Phys. 50, 1894 (1973)

Y.Yokoo, S.Suzuki, M.Morita

Radiative Corrections to Asymmetry and Energy Spectrum of β Rays from Polarized Nuclei

RADIOACTIVITY 12B, 12N; calculated radiative corrections to β spectrum.

doi: 10.1143/PTP.50.1894
Citations: PlumX Metrics


1972MO32      Prog.Theor.Phys. 47, 556 (1972)

M.Morita, M.Fuyuki, S.Tsukada

Theory of Allowed Beta Decay with Higher Order Corrections

doi: 10.1143/PTP.47.556
Citations: PlumX Metrics


1970YO05      Progr.Theor.Phys. 44, 294 (1970)

Y.Yokoo, T.Kodama, M.Morita

Internal Conversion Coefficients for Electron Spin Polarized Fe57

NUCLEAR STRUCTURE 57Fe; calculated I(ce), ICC for 14.4 keV transition.

doi: 10.1143/PTP.44.294
Citations: PlumX Metrics


1963MA09      Phys.Rev. 129, 1308 (1963)

Z.Matumoto, M.Yamada, I.T.Wang, M.Morita

Structure of Low-Lying 2+ States in Even-Even Nuclei and Beta-Gamma Angular Correlations

doi: 10.1103/PhysRev.129.1308
Citations: PlumX Metrics


1963MO22      Suppl.Progr.Theoret.Phys. No.26, 1 (1963)

M.Morita

Theory of Beta Decay


1963MO23      Suppl.Progr.Theoret.Phys. No.26, 64 (1963)

M.Morita, R.Morita, T.Tsukamoto, M.Yamada

Clebsch-Gordan Coefficients for j2 = 5/2, 3 and 7/2


1959MO27      Phys.Rev. 113, 1584 (1959)

M.Morita

Higher Order Corrections to the Allowed Beta Decay

doi: 10.1103/PhysRev.113.1584
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