Measurement of the backward-to-90° neutron-proton elastic cross section ratio between 40 and 75 MeV

Bol, Anne; Dupont, C.; Leleux, Pierre; Lipnik, P.; Macq, Pierre; Ninane, A.

doi:10.1103/physrevc.32.308

Cited by 9 publications

(2 citation statements)

References 4 publications

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“…New differential cross-section data in the backward hemisphere between 20 and 100 MeV were provided by Karlsruhe [57], Louvain-la-Neuve [59], and Uppsala [60], new analyzing power data by TUNL at 16 [66]. This observable is highly sensitive to E, and quite insensitive to 'P, [16].…”

Section: Renormalizationmentioning

confidence: 99%

Phase-shift analysis ofNNscattering below 160 MeV: Indication for a strong tensor force

Henneck

1993

Phys. Rev. C

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A new phase-shift analysis of NN scattering in the energy range 15 -160 MeV is presented. The analysis is based on the carefully reviewed world pp +np data, including recent results for higher-order spin observables in n-p scattering. The latter are essential to determine the mixing parameter~& which is directly related to the isoscalar tensor force. c, displays a high trend, in agreement with recent analyses above 140 MeV, and is only reproduced by potential models with a strong tensor force. The prediction of the full Bonn potential is too low by 20% for energies above 40 MeV. All other I=O phase shifts show agreement with potential models; in particular, the notorious problem with 'P, around 50 MeV has disappeared. Around 25 MeV a ten parameter fit based purely on np data agrees with the corresponding At to the pp data and reveals no indication of anomalous charge independence breaking.PACS number(s): 21.30. +y, 13.75.Cs, 21.45. +v, 25. 10.+s

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Section: Renormalizationmentioning

confidence: 99%

Phase-shift analysis ofNNscattering below 160 MeV: Indication for a strong tensor force

Henneck

1993

Phys. Rev. C

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“…-The differential cross section is the most frequent of np measurements, representing -71 % of all existing np data points between 10 and 800 MeV. In the low energy range (45-75 MeV) new results were obtained at Louvain [43]. Below 400 MeV the data cover the whole angular range but above that energy, forward scattering data are rare.…”

Section: Total Inelastic Cross Sectionmentioning

confidence: 99%

Critical review of the present experimental status of neutron-proton scattering up to 1 GeV

et al. 1987

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2014 La situation expérimentale de la diffusion élastique n-p aux énergies jusqu'à 1 GeV est passée attentivement en revue, en insistant tout particulièrement sur les questions auxquelles devront répondre de futures expériences. La question des tests à faire pour vérifier les symétries fondamentales est traitée (invariance sous renversement du temps et conservation du nombre isotopique). Une revue très complète des résultats est faite. On voit que ces résultats sont trop peu nombreux sur toute la gamme d'énergies considérées et même parfois contradictoires. Les valeurs des déphasages obtenus à partir de cette base incomplète changeront d'une manière appréciable quand de nouveaux résultats seront inclus. Bien entendu aucune reconstruction directe des amplitudes de diffusion np n'est possible actuellement.

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Nucleon-nucleon experiments and phenomenology

Bugg

1984

Nuclear Physics A

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Measurement of the backward-to-90° neutron-proton elastic cross section ratio between 40 and 75 MeV

Cited by 9 publications

References 4 publications

Phase-shift analysis ofNNscattering below 160 MeV: Indication for a strong tensor force

Phase-shift analysis ofNNscattering below 160 MeV: Indication for a strong tensor force

Critical review of the present experimental status of neutron-proton scattering up to 1 GeV

Nucleon-nucleon experiments and phenomenology

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