Proton-Proton Scattering at 10 Mev

Johnston, L. H.; Young, D. E.

doi:10.1103/physrev.116.989

Cited by 45 publications

(3 citation statements)

References 9 publications

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“…δ( 1 S 0 ). As one can see in the Data Reference Table, there is also friction in ∆ C between all three Kyoto75 groups [96] and the other differential cross section data around 10 MeV [80,78,77]. The Kyoto75 [96] data prefer ∆ C to be 0.02-0.03 deg.…”

Section: Single-energy Resultsmentioning

confidence: 83%

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Phase shift analysis of 0–30 MeV pp scattering data

et al. 1988

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A multi-energy phase shift analysis of all published proton-proton (pp) scattering data in the energy range T lab ≤ 30 MeV is presented. In the description of all partial waves the well-known long range interaction is included: the improved Coulomb, the vacuum polarization, and the one-pion-exchange potential. In the lower partial waves the energy-dependent analysis uses a P-matrix parametrization for the short range interaction. Special attention is paid to the electric interaction, the definition of the phase shifts and the selection of the data. The fit to the final data set comprising 360 scattering observables results in χ 2 /N df = 1.0, where N df is the number of degrees of freedom. The ppπ 0-coupling constant is determined to be g 2 ppπ 0 /4π = 14.5 ± 1.2, but there are several indications for a lower value. The optimum value for the P-matrix radius b ≈ 1.4 fm is satisfying. Single-energy phase shifts with second derivative matrices, and effective range parameters are given.

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Section: Single-energy Resultsmentioning

confidence: 83%

“…For the 9.69 MeV data we found a norm of 0.9826, so about 2% less. Naisse [2] finds about the same normalization, but he enlarges the normalization error artificially, since in his analysis [2] the 9.69 MeV data of Los Alamos70 [77] and Minnesota59a [80] are treated as one group with a common normalization datum.…”

Section: B the Datamentioning

confidence: 99%

Phase shift analysis of 0–30 MeV pp scattering data

et al. 1988

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“…We summarize our conclusions as follows: (1) We find that, because of the small value of the A /A LS T ratio, it is impossible to obtain a unique 4-parameter phase shift analysis near 10 MeV using data of currently available precision, and unlikely that new experiments will improve this situation in the near future.…”

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confidence: 64%

Unique Determination of Three Proton-Proton Scattering Parameters at 9.69 MeV

Noyes

Lipinski

1967

Phys. Rev.

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The well established fact that the spin-orbit interaction is of short range compared to one-pion-exchange (OPE) causes the phase shift combination ALs= i-2%,o)-3$ l+561 2 , 1 /12 to be small compared to AT =5 2$ , o-361 1 , d,, 2j/72 at low energy. We find that this makes it impossible to carry through an unambiguous phase shift analysis of existing data near 10 MeV for do and d, J, , but also makes it possible to show that the ratio Am/AT must lie between 0.07 and 0.15 at 9.69 MeV. Using this result, we can then uniquely determine 6: , AT' and AC= , 0+3bl 1+56l 2 , , 9 and obtain 6: = 55.69"& 0.28', AT =O. 91"& 0.28", A, =-0.020"-+ 0.029 a with relative correlations (OT) =-0 96, (OC) = .47, (TC) =-. 30. The result is stable against variation of Alw;/AT over the full physically allowable range, a,gainst the extrapolation needed to include A yy /A xx (909 at 11.4 MeV in the data set, against vacuum polarization corrections, against whether or not phases with J > 2, 3 F2, and (marginally) c2 are dropped or given their OPE val

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Cross Sections for Elementary Particle Interactions

Barashenkov

Mal'tsev

1961

Fortschr. Phys.

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Proton-Proton Scattering at 10 Mev

Cited by 45 publications

References 9 publications

Phase shift analysis of 0–30 MeV pp scattering data

Phase shift analysis of 0–30 MeV pp scattering data

Unique Determination of Three Proton-Proton Scattering Parameters at 9.69 MeV

Cross Sections for Elementary Particle Interactions

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