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NSR database version of April 11, 2024.

Search: Author = O.Sasaki

Found 29 matches.

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2007MU01      Phys.Rev.Lett. 98, 042501 (2007)

R.Muto, J.Chiba, H.Enyo, Y.Fukao, H.Funahashi, H.Hamagaki, M.Ieiri, M.Ishino, H.Kanda, M.Kitaguchi, S.Mihara, K.Miwa, T.Miyashita, T.Murakami, T.Nakura, M.Naruki, K.Ozawa, F.Sakuma, O.Sasaki, M.Sekimoto, T.Tabaru, K.H.Tanaka, M.Togawa, S.Yamada, S.Yokkaichi, Y.Yoshimura, and the KEK-PS E325 Collaboration

Evidence for In-Medium Modification of the φ Meson at Normal Nuclear Density

NUCLEAR REACTIONS C, Cu(p, e+e-X), E=12 GeV; measured electron-positron pair invariant mass spectra; deduced in-medium modification of φ meson.

doi: 10.1103/PhysRevLett.98.042501
Citations: PlumX Metrics


2007NA36      J.Phys.(London) G34, S1059 (2007)

M.Naruki, H.En'yo, R.Muto, T.Tabaru, S.Yokkaichi, Y.Fukao, H.Funahashi, M.Ishino, H.Kanda, M.Kitaguchi, S.Mihara, K.Miwa, T.Miyashita, T.Murakami, T.Nakura, F.Sakuma, M.Togawa, S.Yamada, Y.Yoshimura, J.Chiba, M.Ieiri, O.Sasaki, M.Sekimoto, K.H.Tanaka, H.Hamagaki, K.Ozawa, and the KEK-PS E325 Collaboration

Medium modification of vector mesons observed in 12 GeV p+A reactions

doi: 10.1088/0954-3899/34/8/S156
Citations: PlumX Metrics


2007SA18      Phys.Rev.Lett. 98, 152302 (2007)

F.Sakuma, J.Chiba, H.Enyo, Y.Fukao, H.Funahashi, H.Hamagaki, M.Ieiri, M.Ishino, H.Kanda, M.Kitaguchi, S.Mihara, K.Miwa, T.Miyashita, T.Murakami, R.Muto, T.Nakura, M.Naruki, K.Ozawa, O.Sasaki, M.Sekimoto, T.Tabaru, K.H.Tanaka, M.Togawa, S.Yamada, S.Yokkaichi, Y.Yoshimura, and the KEK-PS E325 Collaboration

Nuclear-Matter Modification of Decay Widths in the φ → e+e- and φ → K+K- Channels

NUCLEAR REACTIONS C, Cu(p, e+e-X), (p, K+K-X), E=12 GeV; measured φ-meson decay associated electron-positron pair and kaon pair invariant mass spectra; deduced medium effects.

doi: 10.1103/PhysRevLett.98.152302
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2006MU22      Nucl.Phys. A774, 723 (2006)

R.Muto, J.Chiba, H.En'yo, Y.Fukao, H.Funahashi, H.Hamagaki, M.Ieiri, M.Ishino, H.Kanda, M.Kitaguchi, S.Mihara, K.Miwa, T.Miyashita, T.Murakami, T.Nakura, M.Naruki, M.Nomachi, K.Ozawa, F.Sakuma, O.Sasaki, H.D.Sato, M.Sekimoto, T.Tabaru, K.H.Tanaka, M.Togawa, S.Yamada, S.Yokkaichi, Y.Yoshimura

First observation of φ-meson mass modification in nuclear medium

NUCLEAR REACTIONS C, Cu(p, X), E=12 GeV; measured e+, e- pair invariant mass spectra; deduced φ yields; analyzed φ mass modification. Comparison with model predictions.

doi: 10.1016/j.nuclphysa.2006.06.123
Citations: PlumX Metrics


2006NA05      Phys.Rev.Lett. 96, 092301 (2006)

M.Naruki, Y.Fukao, H.Funahashi, M.Ishino, H.Kanda, M.Kitaguchi, S.Mihara, K.Miwa, T.Miyashita, T.Murakami, T.Nakura, F.Sakuma, M.Togawa, S.Yamada, Y.Yoshimura, H.En'yo, R.Muto, T.Tabaru, S.Yokkaichi, J.Chiba, M.Ieiri, O.Sasaki, M.Sekimoto, K.H.Tanaka, H.Hamagaki, K.Ozawa

Experimental Signature of Medium Modifications for ρ and ω Mesons in the 12 GeV p + A Reactions

NUCLEAR REACTIONS C, Cu(p, ee+X), E=12 GeV; measured electron-positron pair invariant mass spectra; deduced φ, ω, ρ, η meson yields, medium modification effects.

doi: 10.1103/PhysRevLett.96.092301
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2006TA20      Phys.Rev. C 74, 025201 (2006)

T.Tabaru, H.En'yo, R.Muto, M.Naruki, S.Yokkaichi, J.Chiba, M.Ieiri, O.Sasaki, M.Sekimoto, K.H.Tanaka, H.Funahashi, Y.Fukao, M.Kitaguchi, M.Ishino, H.Kanda, S.Mihara, T.Miyashita, K.Miwa, T.Murakami, T.Nakura, F.Sakuma, M.Togawa, S.Yamada, Y.Yoshimura, H.Hamagaki, K.Ozawa

Nuclear mass number dependence of inclusive production of ω and φ mesons in 12 GeV p + A collisions

NUCLEAR REACTIONS H, C, Cu(p, X), E=12 GeV; measured ω and φ mesons production σ, transverse momentum and rapidity distributions; deduced nuclear mass dependence.

doi: 10.1103/PhysRevC.74.025201
Citations: PlumX Metrics


2004MU22      J.Phys.(London) G30, S1023 (2004)

R.Muto, J.Chiba, H.En'yo, Y.Fukao, H.Funahashi, H.Hamagaki, M.Ieiri, M.Ishino, H.Kanda, M.Kitaguchi, S.Mihara, K.Miwa, T.Miyashita, T.Murakami, T.Nakura, M.Naruki, M.Nomachi, K.Ozawa, F.Sakuma, O.Sasaki, H.D.Sato, M.Sekimoto, T.Tabaru, K.H.Tanaka, M.Togawa, S.Yamada, S.Yokkaichi, Y.Yoshimura

Experimental signature of in-medium mass modification of vector mesons at normal nuclear density

NUCLEAR REACTIONS C, Cu(p, X), E=12 GeV; measured electron-positron pair invariant mass spectra; deduced vector meson yields, in-medium mass modification.

doi: 10.1088/0954-3899/30/8/051
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2003EN11      Prog.Theor.Phys.(Kyoto), Suppl. 149, 49 (2003)

H.En'yo, J.Chiba, H.Funahashi, H.Hamagaki, M.Ieiri, M.Ishino, H.Kanda, M.Kitaguchi, S.Mihara, T.Miyashita, T.Murakami, R.Muto, M.Naruki, M.Nomachi, K.Ozawa, F.Sakuma, O.Sasaki, H.D.Sato, M.Sekimoto, T.Tabaru, K.H.Tanaka, S.Yadama, S.Yokkaichi, Y.Yoshimura

Nuclear Media Effects on Production and Decay of Vector Meson Studied in 12 GeV p + A Interaction

NUCLEAR REACTIONS C, Cu(p, X), E=12 GeV; measured electron-positron pair invariant mass spectra; deduced vector meson production features.

doi: 10.1143/PTPS.149.49
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2003NA31      Nucl.Phys. A721, 297c (2003)

M.Naruki, J.Chiba, H.En'yo, H.Funahashi, H.Hamagaki, M.Ieiri, M.Ishino, H.Kanda, M.Kitaguchi, S.Mihara, T.Miyashita, T.Murakami, R.Muto, M.Nomachi, K.Ozawa, F.Sakuma, O.Sasaki, H.D.Sato, M.Sekimoto, T.Tabaru, K.H.Tanaka, S.Yadama, S.Yokkaichi, Y.Yoshimura

Measurement of Invariant Mass Spectra of Vector Meson Decaying in Nuclear Matter

NUCLEAR REACTIONS C, Cu(p, X), E=12 GeV; measured electron-positron pair invariant mass spectra; deduced vector meson production and decay features.

doi: 10.1016/S0375-9474(03)01054-6
Citations: PlumX Metrics


2002OZ01      Nucl.Phys. A698, 535c (2002)

K.Ozawa, J.Chiba, H.Enyo, H.Funahashi, H.Hamagaki, M.Kitaguchi, M.Ieiri, M.Ishino, H.Kanda, S.Mihara, T.Miyashita, T.Murakami, R.Muto, M.Naruki, M.Nomachi, O.Sasaki, F.Sakuma, H.D.Sato, M.Sekimoto, T.Tabaru, K.H.Tanaka, S.Yamada, S.Yokkaichi, Y.Yoshimura

Modification of Vector Mesons in Nuclear Matter Measured in 12 GeV p + A Reactions at KEK-PS

NUCLEAR REACTIONS H, C, Cu, Gd(p, X), E=12 GeV; measured e+e- and K+K- invariant mass spectra; deduced in-medium modification of vector mesons.

doi: 10.1016/S0375-9474(01)01422-1
Citations: PlumX Metrics


2001OZ01      Phys.Rev.Lett. 86, 5019 (2001)

K.Ozawa, H.Enyo, H.Funahashi, M.Kitaguchi, M.Ishino, H.Kanda, S.Mihara, T.Miyashita, T.Murakami, R.Muto, M.Naruki, F.Sakuma, H.D.Sato, T.Tabaru, S.Yamada, S.Yokkaichi, Y.Yoshimura, J.Chiba, M.Ieiri, M.Nomachi, O.Sasaki, M.Sekimoto, K.H.Tanaka, H.Hamagaki

Observation of ρ/ω Meson Modification in Nuclear Matter

NUCLEAR REACTIONS H, C, Cu(p, X), E=12 GeV; measured electron-positron pair invariant mass spectra; deduced nuclear matter modification of ρ, ω mesons.

doi: 10.1103/PhysRevLett.86.5019
Citations: PlumX Metrics


2000EN07      Nucl.Phys. A670, 182c (2000)

H.Enyo, J.Chira, H.Funahashi, H.Hamagaki, T.Haseyama, M.Ieiri, M.Ishino, H.Kanda, S.Mihara, T.Miyashita, T.Murakami, R.Muto, M.Naruki, M.Nomachi, K.Ozawa, O.Sasaki, M.Sekimoto, H.D.Sato, T.Tabaru, K.Tanaka, S.Yamada, S.Yokkaichi, Y.Yoshimura, and the KEK-PS-E325 Collaboration

Study of Chiral Property of Nuclear Matter Through Measurements of φ Meson Decay

NUCLEAR REACTIONS H, C, Cu(p, X), E=12 GeV; measured φ meson production associated invariant mass spectra.

doi: 10.1016/S0375-9474(00)00092-0
Citations: PlumX Metrics


1995FU13      Nucl.Instrum.Methods Phys.Res. A361, 485 (1995)

T.Fukuda, T.Hasegawa, O.Hashimoto, A.Higashi, S.Homma, T.Kitami, Y.Matsuyama, T.Miyachi, T.Morimoto, T.Nagae, K.Omata, M.Sekimoto, T.Shibata, H.Sakaguchi, T.Takahashi, K.Aoki, Y.Doi, Y.Kondo, Y.Makida, M.Nomachi, H.Noumi, O.Sasaki, T.Shintomi, H.Bhang, H.Park, M.Youn, H.Yu, Y.Gavrilov, S.Ajimura, T.Kishimoto, A.Ohkusu, N.Shinkai, K.Maeda, R.Sawafta

The Superconducting Kaon Spectrometer - SKS

NUCLEAR REACTIONS 12C(π-, π-'), E at 800 MeV/c; measured spectra. 12C(π+, K+), E at 1.06 GeV/c; measured hypernuclei production σ vs missing mass. Superconducting kaon spectrometer.

doi: 10.1016/0168-9002(95)00216-2
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1994SH38      J.Phys.Soc.Jpn. 63, 478 (1994)

K.Shoda, O.Sasaki, K.Takeshita, T.Taniuchi, H.Tsubota

Highly Excited Nuclear Residual States in the (γ, π+) Reaction in the Threshold Region

NUCLEAR REACTIONS 6Li, 9Be, 28Si(e, π+), E=200 MeV; measured pion energy distributions; deduced σ(γ, π+), spin-isospin flip GDR features in residual nuclei.

doi: 10.1143/JPSJ.63.478
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1991AK05      Nucl.Phys. A534, 478 (1991)

M.Akei, J.F.Amann, J.Chiba, H.Ejiri, Y.Iseki, M.Fukuda, T.Fukuda, O.Hashimoto, A.Higashi, S.Homma, T.Irie, A.Kashitani, S.Kato, K.Kimura, T.Kishimoto, K.Maeda, Y.Matsuyama, J.A.McGill, T.Nagae, H.Nagasawa, C.Nagoshi, H.Noumi, M.Nomachi, H.Ohsumi, K.Okuda, K.Omata, H.Sano, O.Sasaki, T.Shibata, F.Soga, F.Takeuchi, H.A.Thiessen, S.Toyama, K.H.Tanaka, Y.Umeda, N.Yoshikawa, Y.Yamanoi

The (π+, K+) Reaction on 12C and 56Fe

NUCLEAR REACTIONS 12C, Fe(π+, K+), E at 1.07 GeV/c; measured σ(θ), θ=3°. DWIA analysis.

doi: 10.1016/0375-9474(91)90457-H
Citations: PlumX Metrics


1989AK04      Nucl.Instrum.Methods Phys.Res. A283, 46 (1989)

M.Akei, J.F.Amann, J.Chiba, H.Ejiri, M.Fukuda, T.Fukuda, O.Hashimoto, S.Homma, T.Irie, Y.Iseki, A.Kashitani, S.Kato, K.Kimura, T.Kishimoto, K.Maeda, Y.Matsuyama, J.A.McGill, T.Nagae, H.Nagasawa, C.Nagoshi, M.Nomachi, H.Noumi, H.Ohsumi, K.Okuda, K.Omata, H.Sano, O.Sasaki, T.Shibata, F.Soga, F.Takeuchi, H.A.Thiessen, S.Toyama, K.H.Tanaka, Y.Yamanoi, N.Yoshikawa

A Broad Range Spectrometer PIK for Medium-Energy Meson Spectroscopy

NUCLEAR REACTIONS 12C(π+, K+), E at 1.05 GeV/c; 12C, 1H(π+, p), E at 490 MeV/c; measured missing mass spectra. CH2 target, broad range spectrometer.

doi: 10.1016/0168-9002(89)91254-0
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1988SH35      Nucl.Phys. A486, 512 (1988)

K.Shoda, S.Toyama, M.Torikoshi, O.Sasaki, T.Kobayashi

Charge Number Dependence of π+ Production from Nuclei by 200 MeV Electron

NUCLEAR REACTIONS 7Li, 28Si, 51V, 93Nb(e, π+), E=200 MeV; measured π+ spectra, σ(E(π), θ(π)). Natural targets.

doi: 10.1016/0375-9474(88)90160-1
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1988SH36      Nucl.Phys. A486, 526 (1988)

K.Shoda, T.Kobayashi, O.Sasaki, S.Toyama

Branching of π+ in 12C(γ, π+) Reaction

NUCLEAR REACTIONS 12C(e, π+), E=200, 205 MeV; measured σ(E(π+), θ). 12B deduced branching cross sections. Natural target.

doi: 10.1016/0375-9474(88)90161-3
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1987SU17      Nucl.Phys. A473, 705 (1987)

B.-N.Sung, K.Shoda, A.Kagaya, S.Toyama, M.Torikoshi, O.Sasaki, T.Kobayashi, H.Tsubota

The Strong M1 Transition to Low-Lying 2+ States in the 14N(γ, π+)14C(*) Reaction

NUCLEAR REACTIONS 14N(e, π+), E=190 MeV; measured σ(E(π+), θ). 14C deduced levels, M1 transition strength. Compressed powder Be3N2 target.

doi: 10.1016/0375-9474(87)90275-2
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1986AR11      Phys.Rev. C34, 935 (1986)

J.D.T.Arruda-Neto, M.Sugawara, T.Tamae, O.Sasaki, H.Ogino, H.Miyase, K.Abe

Photoexcitation Mechanisms and Fission of 209Bi from Threshold to the Δ Region

NUCLEAR REACTIONS 209Bi(e, F), E=43-250 MeV; measured absolute fission σ(E); deduced photon induced fission σ(E). 209Bi deduced relative fission probability. Natural target.

doi: 10.1103/PhysRevC.34.935
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1986SH13      Phys.Lett. 169B, 17 (1986)

K.Shoda, A.Kagaya, O.Sasaki, S.Toyama, T.Kobayashi, H.Tsubota

Contribution of M1 and E0 Transitions in 13C(γ, π-)13N(g.s) in the Threshold Region

NUCLEAR REACTIONS 13C(γ, π-), E=165 MeV bremsstrahlung; measured σ(θ). 14N level deduced relative M1, E0 population contribution.

doi: 10.1016/0370-2693(86)90677-5
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1986SH14      Phys.Rev. C33, 2179 (1986)

K.Shoda, M.Torikoshi, O.Sasaki, S.Toyama, T.Kobayashi, A.Kagaya, H.Tsubota

Spin-Dipole Isovector Resonances in 12C and 6Li by Positive Photopion Production

NUCLEAR REACTIONS 12C(e, π+), E=200 MeV; 6Li(e, π+), E=202 MeV; measured σ(Eπ, θ); deduced σ(γ, π) vs excitation, θ. 12B, 6He deduced spin-dipole isovector resonances.

doi: 10.1103/PhysRevC.33.2179
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1986YA07      Phys.Rev. C34, 1123 (1986)

M.Yamazaki, K.Shoda, M.Torikoshi, O.Sasaki, H.Tsubota

Angular Distributions of π+ in the 10B(γ, π+) Reaction leading to Low-Lying States of 10Be

NUCLEAR REACTIONS 10B(e, π+), E=185 MeV; measured σ(θ, E(π)); deduced 10B(γ, π+) partial σ. Double-focusing magnetic spectrometer. DWIA calculations.

doi: 10.1103/PhysRevC.34.1123
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1985AR08      Phys.Rev. C31, 2321 (1985)

J.D.T.Arruda-Neto, M.Sugawara, T.Tamae, O.Sasaki, H.Ogino, H.Miyase, K.Abe

Photoexcitation Mechanisms and the Fission Process of 209Bi from Threshold to the Δ Region

NUCLEAR REACTIONS 209Bi(e, F), E=43-250 MeV; measured fission σ(E); deduced σ(γ, F). 209Pb deduced relative fission probability. 209Bi deduced fission process, photoexcitation mechanism. Natural target.

doi: 10.1103/PhysRevC.31.2321
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1985SH11      Nucl.Phys. A439, 669 (1985)

K.Shoda, M.Torikoshi, M.Yamazaki, O.Sasaki, H.Tsubota

π+ Photoproduction from 28Si Leaving Low-Lying Residual States

NUCLEAR REACTIONS 28Si(e, π+), E=180 MeV; measured σ(E(π+), θ). 28Mg deduced levels, M1 transition strength. Natural target.

doi: 10.1016/0375-9474(85)90332-X
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1983MI06      Phys.Rev. C28, 464 (1983)

K.Min, E.J.Winhold, K.Shoda, M.Torikoshi, M.Yamazaki, O.Sasaki, H.Tsubota, B.N.Sung

Isovector Spin-Isospin Mode Analog Giant Resonances in 13B by 13C(e, π+)13B

NUCLEAR REACTIONS 13C(e, e'π+), E=195 MeV; measured σ(E(π), θ(π)); deduced photopion σ(θ) vs Eγ. 13B deduced M2, M4 transition strength distribution, giant analog resonance excitation.

doi: 10.1103/PhysRevC.28.464
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1983SH19      Nucl.Phys. A403, 469 (1983)

K.Shoda, M.Yamazaki, M.Torikoshi, O.Sasaki, H.Tsubota, B.N.Sung

Photopion Angular Distribution from 9Be(e, π+)9Li(g.s.)

NUCLEAR REACTIONS 9Be(e, π+), E=200 MeV; measured σ(E(π+), θ); deduced photoproduction σ(θ), σ. Natural target.

doi: 10.1016/0375-9474(83)90617-6
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1983SH41      J.Phys.Soc.Jpn. 52, 3355 (1983)

K.Shoda, M.Yamazaki, M.Torikoshi, O.Sasaki, H.Tsubota, Baik Nung Sung

Photo π+ Production from 16O

NUCLEAR REACTIONS 16O(e, π+), E=200 MeV; measured σ(θ, E(π)); deduced photopion production σ(θ). Natural BeO target. Helm, shell model analyses.

doi: 10.1143/JPSJ.52.3355
Citations: PlumX Metrics


1981SH06      Phys.Lett. 101B, 124 (1981)

K.Shoda, O.Sasaki, T.Kohmura

Momentum Transfer Dependence of 6Li(γ, π+)6He Cross Sections

NUCLEAR REACTIONS 6Li(e, π+), E=180 MeV; measured σ(θ, E(π+)); deduced momentum transfer dependence. 6He levels deduced relative M1 transition strength. Shell model.

doi: 10.1016/0370-2693(81)90504-9
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