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Search: Author = B.Loiseau

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2020LO10      Phys.Rev. C 102, 034006 (2020)

B.Loiseau, S.Wycech

Extraction of baryonia from the lightest antiprotonic atoms

ATOMIC PHYSICS 1,2H, 3,4He; analyzed experimental data for antiprotonic hydrogen and helium atoms using the 2009 version of the Paris nucleon-antinucleon interaction potential; calculated s-wave scattering lengths and P-wave volumes using the Paris 1999 and Paris 2009 models, atomic 2P hyperfine structure splittings for antiprotonic deuterium. Comparison of the level shifts and widths in deuterium and helium atoms with the predictions of the Paris potential models. Relevance to successful description of atomic, bubble chamber, and radiochemical data.

doi: 10.1103/PhysRevC.102.034006
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2018DE23      Phys.Rev. C 97, 065206 (2018)

J.-P.Dedonder, B.Loiseau, S.Wycech

Photon or meson formation in Jψ decays into pp(bar)

doi: 10.1103/PhysRevC.97.065206
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2015FR05      Nucl.Phys. A943, 101 (2015)

E.Friedman, A.Gal, B.Loiseau, S.Wycech

Antinucleon-nucleus interaction near threshold from the Paris N(bar)N potential

NUCLEAR REACTIONS 1H(n-bar, x), (p-bar, x), E at 50-390 MeV/c;Ca(p-bar, x), E at 70-390 MeV/c; calculated annihilation σ using Paris 2009 potential. 40Ca(p-bar, x), E=47.8 MeV; calculated σ(θ) using Paris 2009 and empirical potentials compared with data.

doi: 10.1016/j.nuclphysa.2015.08.010
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2009DE36      Phys.Rev. C 80, 045207 (2009)

J.-P.Dedonder, B.Loiseau, B.El-Bennich, S.Wycech

Structure of the X(1835) baryonium

doi: 10.1103/PhysRevC.80.045207
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2009EL06      Phys.Rev. C 79, 054001 (2009)

B.El-Bennich, M.Lacombe, B.Loiseau, S.Wycech

Paris N(N-bar) potential constrained by recent antiprotonic-atom data and (n-bar)p total cross sections

NUCLEAR REACTIONS p(p-bar, n-bar), E at 546, 656 MeV/c; p(p-bar, p), E at 544, 679, 790 MeV/c; analyzed σ, σ(θ), polarization and short-range parameters of Paris nucleon-antinucleon optical potential. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.054001
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2008GI01      Phys.Rev. C 77, 014003 (2008)

W.R.Gibbs, B.Loiseau

Two-pion exchange contribution to proton-proton scattering at medium energies

NUCLEAR REACTIONS p(p, X), E at 12 GeV/c; calculated amplitudes, pion-quark distributions.

doi: 10.1103/PhysRevC.77.014003
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2007EL05      Nucl.Phys. A790, 510c (2007)

B.El-Bennich, O.M.A.Leitner, B.Loiseau, J.-P.Dedonder

Scalar meson properties from D-meson decays

doi: 10.1016/j.nuclphysa.2007.03.086
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2007GI09      Nucl.Phys. A790, 315c (2007)

W.R.Gibbs, B.Loiseau

Two pion exchange in proton-proton scattering

NUCLEAR REACTIONS 1H(polarized p, p), E at < 12 GeV/c; analyzed σ(θ=90°, E); deduced spin transfer parameter. Dispersion relations.

doi: 10.1016/j.nuclphysa.2007.03.057
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2007LO09      Nucl.Phys. A790, 472c (2007)

B.Loiseau, B.El-Bennich, A.Furman, R.Kaminski, L.Lesniak

Strong and weak interactions in B → π+π- K decays

doi: 10.1016/j.nuclphysa.2007.03.080
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2005LO08      Phys.Rev. C 72, 011001 (2005)

B.Loiseau, S.Wycech

Antiproton-proton channels in J/ψ decays

doi: 10.1103/PhysRevC.72.011001
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2004ER04      Phys.Lett. B 594, 76 (2004)

T.E.O.Ericson, B.Loiseau, S.Wycech

A phenomenological π-p scattering length from pionic hydrogen

ATOMIC PHYSICS, Mesic-atoms 1H(π-, X), E at rest; analyzed pionic atom energy shifts; deduced scattering length.

doi: 10.1016/j.physletb.2004.05.009
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2003EL04      Phys.Rev. C 68, 014003 (2003)

B.El-Bennich, W.M.Kloet, B.Loiseau

Annihilation range and final-state interaction in (p-bar)p annihilation into π-π+

NUCLEAR REACTIONS 1H(p-bar, π+π-), E at 360-1550 MeV/c; analyzed σ(θ), analyzing powers; deduced role of final-state interactions, other reaction mechanism features.

doi: 10.1103/PhysRevC.68.014003
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2003ER03      Nucl.Phys. A721, 653c (2003)

T.E.O.Ericson, B.Loiseau, S.Wycech

Electromagnetic corrections to π-p scattering length from pionic hydrogen

doi: 10.1016/S0375-9474(03)01145-X
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2003KA02      Phys.Lett. 551B, 241 (2003)

R.Kaminski, L.Lesniak, B.Loiseau

Elimination of ambiguities in ππ phase shifts using crossing symmetry

doi: 10.1016/S0370-2693(02)03021-6
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2002ER02      Phys.Rev. C66, 014005 (2002)

T.E.O.Ericson, B.Loiseau, A.W.Thomas

Determination of the Pion-Nucleon Coupling Constant and Scattering Lengths

NUCLEAR REACTIONS 1,2H(π-, X), E not given; analyzed data; deduced scattering lengths, coupling constants. 1H(π+, π+), (π-, π-), E at 0.5-2 GeV/c; calculated σ. Goldberger-Miyazawa-Oehme sum rule.

doi: 10.1103/PhysRevC.66.014005
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2002LA08      Phys.Rev. C65, 034004 (2002)

M.Lacombe, B.Loiseau, R.Vinh Mau, P.Demetriou, J.P.B.C.de Melo, C.Semay

Testing the Quark Cluster Model in Nucleon-Nucleon Scattering

NUCLEAR REACTIONS 1H(p, p), E=68 MeV; 1H(n, n), E=96, 200 MeV; calculated σ(θ). 1H(p, p), E=200 MeV; 1H(n, n), E=68, 261 MeV; calculated polarization, spin correlation parameters. Quark cluster model, comparisons with data.

doi: 10.1103/PhysRevC.65.034004
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2001LO03      Phys.Rev. C63, 034003 (2001)

B.Loiseau, S.Wycech

πΛΣ Coupling Extracted from Hyperonic Atoms

NUCLEAR STRUCTURE 27Al, 28Si, 40Ca, 208Pb; analyzed hyperonic atoms level widths, related data; deduced pion-hyperon coupling constants.

doi: 10.1103/PhysRevC.63.034003
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2001LO09      Nucl.Phys. A684, 380c (2001)

B.Loiseau, T.E.O.Ericson, A.W.Thomas

Zero-Energy π--D Scattering: Precise determination of the πN scattering lengths and of the charged coupling constant

NUCLEAR REACTIONS 1,2H(π-, X), E not given; analyzed data; deduced scattering lengths, coupling constants.

doi: 10.1016/S0375-9474(01)00400-6
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2001RA10      Phys.Rev. C63, 044001 (2001)

J.Rahm, J.Blomgren, H.Conde, S.Dangtip, K.Elmgren, N.Olsson, T.Ronnqvist, R.Zorro, O.Jonsson, L.Nilsson, P.-U.Renberg, A.Ringbom, G.Tibell, S.Y.van der Werf, T.E.O.Ericson, B.Loiseau

np Scattering Measurements at 96 MeV

NUCLEAR REACTIONS 1H(n, n), E=96 MeV; measured proton spectra, σ(θ), σ; deduced πNN coupling constant. Comparison with earlier data.

doi: 10.1103/PhysRevC.63.044001
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22668.

2000ER04      Nucl.Phys. A663-664, 541c (2000)

T.E.O.Ericson, B.Loiseau, A.W.Thomas

Precision Determination of the πN Scattering Lengths and the Charged πNN Coupling Constant

doi: 10.1016/S0375-9474(99)00651-X
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2000ER07      Phys.Scr. T87, 71 (2000)

T.E.O.Ericson, B.Loiseau, A.W.Thomas

The GMO Sumrule and the πNN Coupling Constant

NUCLEAR REACTIONS 1H(π+, π+), (π-, π-), E at 500-2000 MeV/c; analyzed data; deduced πNN coupling constant. Goldberger-Miyazawa-Oehme sum rule.

doi: 10.1238/Physica.Topical.087a00071
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2000KA15      Nucl.Phys. A663-664, 625c (2000)

R.Kaminski, L.Lesniak, B.Loiseau

Properties of Scalar-Isoscalar Mesons from Multichannel Interaction Analysis below 1800 MeV

doi: 10.1016/S0375-9474(99)00692-2
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2000LO10      Phys.Scr. T87, 53 (2000)

B.Loiseau, T.E.O.Ericson

How Precisely Can the Difference Method Determine the πNN Coupling Constant ?

NUCLEAR REACTIONS 1H(n, n), E=162 MeV; analyzed σ(θ); deduced πNN coupling constant. Difference method.

doi: 10.1238/Physica.Topical.087a00053
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2000OL09      Phys.Scr. T87, 7 (2000)

N.Olsson, J.Blomgren, H.Conde, S.Dangtip, K.Elmgren, J.Rahm, T.Ronnqvist, R.Zorro, O.Jonsson, L.Nilsson, P.-U.Renberg, A.Ringbom, G.Tibell, T.E.O.Ericson, B.Loiseau

Uppsala Neutron-Proton Scattering Measurements and the πNN Coupling Constant

NUCLEAR REACTIONS 1H(n, n), E=96, 162 MeV; measured σ(θ); deduced πNN coupling constant. Comparisons with model predictions, previous data.

doi: 10.1238/Physica.Topical.087a00007
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1999EL01      Phys.Rev. C59, 2313 (1999)

B.El-Bennich, M.Lacombe, B.Loiseau, R.Vinh Mau

Refining the Inner Core of the Paris N(N-bar) Potential

NUCLEAR REACTIONS 1H(p-bar, p-bar), (p-bar, n-bar), E not given; analyzed data; deduced Paris N(N-bar) potential parameters.

doi: 10.1103/PhysRevC.59.2313
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1999ER04      Nucl.Phys. (Supplement) A654, 939c (1999)

T.E.O.Ericson, B.Loiseau, J.Rahm, J.Blomgren, N.Olsson, A.W.Thomas

Precise Strength of the πNN Coupling Constant

doi: 10.1016/S0375-9474(00)88577-2
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1998ER07      Phys.Rev.Lett. 81, 5254 (1998)

T.E.O.Ericson, B.Loiseau, J.Rahm, N.Olsson, J.Blomgren, H.Conde, K.Elmgren, O.Jonsson, L.Nilsson, P.-U.Renberg, A.Ringbom, T.Ronnqvist, G.Tibell, R.Zorro

Ericson et al. Reply ( Comment on ' πNN Coupling from High Precision np Charge Exchange at 162 MeV ' )

doi: 10.1103/PhysRevLett.81.5254
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1998ER08      Acta Phys.Pol. B29, 3015 (1998)

T.E.O.Ericson, B.Loiseau

Direct Determinations of the πNN Coupling Constants

NUCLEAR REACTIONS 1H(n, nX), E ≈ 100-800 MeV; analyzed σ(θ); deduced pion-nucleon-nucleon coupling constant. Extrapolation technique.

1998KL04      Eur.Phys.J. A 1, 337 (1998)

W.M.Kloet, B.Loiseau

ππ Scattering and the Meson Resonance Spectrum

doi: 10.1007/s100500050067
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1998KL05      Nucl.Phys. A631, 538c (1998)

W.M.Kloet, B.Loiseau

Elastic ππ Scattering up to 2 GeV and the Meson Resonance Spectrum

doi: 10.1016/S0375-9474(98)00063-3
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1998LO06      Nucl.Phys. A631, 442c (1998)

B.Loiseau, W.R.Gibbs

Proton-Proton Scattering at 90° for P(lab) up to 12 GeV/c

NUCLEAR REACTIONS 1H(polarized p, p), E at < 12 GeV/c; analyzed spin correlation parameter, σ(θ); deduced multiple pion exchange role.

doi: 10.1016/S0375-9474(98)00044-X
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1998RA04      Phys.Rev. C57, 1077 (1998)

J.Rahm, J.Blomgren, H.Conde, S.Dangtip, K.Elmgren, N.Olsson, T.Ronnqvist, R.Zorro, A.Ringbom, G.Tibell, O.Jonsson, L.Nilsson, P.-U.Renberg, T.E.O.Ericson, B.Loiseau

np Scattering Measurements at 162 MeV and the πNN Coupling Constant

NUCLEAR REACTIONS 1H(n, p), E=162 MeV; measured σ(θ); deduced πNN coupling constant. Comparison with other results.

doi: 10.1103/PhysRevC.57.1077
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1997ER01      Phys.Lett. 393B, 167 (1997)

T.Ericson, B.Loiseau

Systematic Effects in the Determination of the πNN Coupling from (p-bar)p → (n-bar)n Differential Cross Section

NUCLEAR REACTIONS 1H(p-bar, X), E=162, 176 MeV; analyzed charge exchangeσ(θ); deduced systematic corrections to the πNN-coupling constant, related features.

doi: 10.1016/S0370-2693(96)01601-2
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1997KA56      Phys.Lett. 413B, 130 (1997)

R.Kaminski, L.Lesniak, B.Loiseau

Three Channel Model of Meson-Meson Scattering and Scalar Meson Spectroscopy

NUCLEAR REACTIONS 1H(π-, X), E=300-1600 MeV; analyzed data for π+π-n production; deduced narrow scalar resonance, width. Meson-meson scattering, three-channel model. Polarized target.

doi: 10.1016/S0370-2693(97)01090-3
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1997LO08      Z.Phys. A358, 435 (1997)

B.Loiseau, L.Mathelitsch

Parametrization of the Scattering Wave Functions of the Paris Potential

NUCLEAR REACTIONS 1H(n, n), ≤ 400 MeV; calculated np-scattering wave function for l ≤ 5 partial waves. Paris potential.

doi: 10.1007/s002180050352
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1995ER06      Phys.Rev.Lett. 75, 1046 (1995)

T.E.O.Ericson, B.Loiseau, J.Nilsson, N.Olsson, J.Blomgren, H.Conde, K.Elmgren, O.Jonsson, L.Nilsson, P.-U.Renberg, A.Ringbom, T.Ronnqvist, G.Tibell, R.Zorro

πNN Coupling from High Precision np Charge Exchange at 162 MeV

NUCLEAR REACTIONS 1H(n, n), E=162 MeV; measured σ(θ); deduced πNN coupling constant from extrapolation to pion pole.

doi: 10.1103/PhysRevLett.75.1046
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22277.

1995KL05      Z.Phys. A353, 227 (1995)

W.M.Kloet, B.Loiseau

The ππ S-Wave in the 1 to 2 GeV Region from a ππ, (K-bar)K and ρρ(ωω) Coupled Channel Model

doi: 10.1007/BF01295901
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1994GI08      Phys.Rev. C50, 2742 (1994)

W.R.Gibbs, B.Loiseau

Neutron-Proton Charge Exchange

NUCLEAR REACTIONS 1H(polarized p, n), (p, n), E at ≤ 500 MeV/c; analyzed σ(θ), polarization observables data; deduced nucleon quark constituents pions exchange role.

doi: 10.1103/PhysRevC.50.2742
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1994PI07      Phys.Rev. C50, 2710 (1994)

M.Pignone, M.Lacombe, B.Loiseau, R.Vinh Mau

Paris N(N-Bar) Potential and Recent Proton-Antiproton Low Energy Data

NUCLEAR REACTIONS 1H(p-bar, p-bar), E=38.63-284 MeV; analyzed σ(θ), polarization, total, annihilation σ(E) data. 1H(p-bar, n-bar), E=36-282 MeV; analyzed σ(θ), polarization, depolarization data; deduced potential characteristics, resonances, bound states, quantum numbers. Paris(N-bar)(N)-potentials.

doi: 10.1103/PhysRevC.50.2710
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1993PI11      Nucl.Phys. A558, 159c (1993)

M.Pignone, M.Lacombe, B.Loiseau, R.Vinh Mau

Constraints on the Spin and Isospin Dependence of the N(N-bar) Potential from the New p(p-bar) → n(n-bar) Polarization Data

NUCLEAR REACTIONS 1H(p-bar, n-bar), E=111, 120 MeV; calculated σ(θ). 1H(p-bar, p-bar), E=230.6, 283.9 MeV; calculated P(θ). 1H(p-bar, n-bar), E=147.3, 273.6 MeV; calculated analyzing power vs θ; deduced (NN-bar) potential spin, isospin dependence constraints. Paris potential.

doi: 10.1016/0375-9474(93)90390-J
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1992LO05      Nucl.Phys. A543, 33c (1992)


(N-Bar)N Interaction Theoretical Models

NUCLEAR REACTIONS 1H(p-bar, p), (p-bar, X), E=220-331 MeV; compiled data analyses; deduced (N-bar)-N interaction features.

doi: 10.1016/0375-9474(92)90409-D
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1991LA03      Nucl.Phys. A528, 557 (1991)

P.LaFrance, B.Loiseau

Study from Threshold to High Momenta of the (p-bar)p → (Lambda-bar)Lambda

NUCLEAR REACTIONS 1H(p-bar, X), E=high; calculated (lambda)(lambda-bar) production σ(θ).

doi: 10.1016/0375-9474(91)90251-Z
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1991VI02      Phys.Rev.Lett. 67, 1392 (1991)

R.Vinh Mau, C.Semay, B.Loiseau, M.Lacombe

Nuclear Forces and Quark Degrees of Freedom

NUCLEAR REACTIONS 1H(p, p), E ≈ 20-300 MeV; calculated σ(θ). 1H(p, p), E=50 MeV; calculated polarization vs θ. Quark cluster model, Paris potential.

doi: 10.1103/PhysRevLett.67.1392
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1990GI05      Phys.Rev. C41, 2726 (1990)

W.R.Gibbs, W.R.Kaufmann, B.Loiseau, M.Lacombe, R.Vinh Mau

Investigating Fundamental Antiproton-Nucleon Interactions by Means of (p-bar)-Nucleus Elastic Scattering

NUCLEAR REACTIONS 12C(p-bar, p-bar), E=46.8 MeV; analyzed σ(θ); deduced interaction energy dependence.

doi: 10.1103/PhysRevC.41.2726
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1988LA30      Phys.Lett. 214B, 317 (1988)

P.La France, B.Loiseau, R.Vinh Mau

Effects of Inital- and Final-State Interactions in the p-bar p → (Lambda)-bar (Lambda) Reaction

NUCLEAR REACTIONS 1H(p-bar, p-bar), E at 1.501 GeV/c; calculated σ(θ), analyzing power.

doi: 10.1016/0370-2693(88)91369-X
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1985LO14      Phys.Rev. C32, 2165 (1985)

B.Loiseau, L.Mathelitsch, W.Plessas, K.Schwarz

Off-Shell Properties of the Paris Nucleon-Nucleon Potential and Implications for Few-Body Systems

NUCLEAR REACTIONS 2H(e, e), E not given; calculated deuteron tensor polarization, θ=70°. 2H(polarized p, p), (polarized n, n), E=10 MeV; calculated spin transfer coefficient.

doi: 10.1103/PhysRevC.32.2165
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1982CO06      Phys.Rev.Lett. 48, 1319 (1982)

J.Cote, M.Lacombe, B.Loiseau, B.Moussallam, R.Vinh Mau

Nucleon-Antinucleon Optical Potential

NUCLEAR REACTIONS 1H(p-bar, p-bar), E=100-300 MeV; calculated σ(θ) vs E. 1H(p-bar, ν-bar), E=20-360 MeV; calculated σ(E). Nucleon-antinucleon optical potential.

doi: 10.1103/PhysRevLett.48.1319
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1981PA13      Nucl.Phys. A365, 392 (1981)

F.Pauss, L.Mathelitsch, J.Cote, M.Lacombe, B.Loiseau, R.Vinh Mau

Correlations between Potentials and Observables in the NN Interaction

NUCLEAR REACTIONS 1H(p, p), (polarized p, p), E=10-350 MeV; calculated σ(θ), polarization vs θ, spin correlation, triple scattering parameters; deduced energy dependence of isoscalar, isovector, tensor, spin-orbit forces. Velocity dependent Paris nucleon-nucleon potential.

doi: 10.1016/0375-9474(81)90398-5
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1980CO01      Phys.Rev.Lett. 44, 1031 (1980)

J.Cote, P.Pires, R.de Tourreil, M.Lacombe, B.Loiseau, R.Vinh Mau

Analyzing Power in pp Scattering at Low Energies: The Paris-Potential Predictions

NUCLEAR REACTIONS 1H(polarized p, p), E=10-16 MeV; calculated A(θ), phase shifts. Paris potentials.

doi: 10.1103/PhysRevLett.44.1031
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