%0 Journal Article
%T Analysis of the Low-Energy ¦Ð<sup>±</sup>p Elastic-Scattering Data
%A E. Matsinos
%A G. Rasche
%J Journal of Modern Physics
%P 1369-1387
%@ 2153-120X
%D 2012
%I Scientific Research Publishing
%R 10.4236/jmp.2012.310174
%X We report the results of a phase-shift analysis (PSA) of the low-energy ¦Ð¡Àp elastic-scattering data. Following the method which we had set forth in our previous PSA [1], we first investigate the self-consistency of the low-energy ¦Ð¡Àp elastic-scattering databases, via two separate analyses of (first) the ¦Ð+p and (subsequently) the ¦Ð-p elastic-scattering data. There are two main differences to our previous PSA: 1) we now perform only one test for the acceptance of each data set (based on its contribution to the overall 2) and 2) we adopt a more stringent acceptance criterion in the statistical tests. We show that it is possible to obtain self-consistent databases after removing a very small amount of the data (4.57% of the initial database). We subsequently fit the ETH model [38] to the truncated¦Ð¡Àp elastic-scattering databases. The model-parameter values show reasonable stability when subjected to different criteria for the rejection of single data points and entire data sets. Our result for the pseudovector ¦ÐNN coupling constant is 0.0726¡À0.0014. We extract the scattering lengths and volumes, as well as the s- and p-wave hadronic phase shifts up to T = 100 MeV. Large differences in the s-wave part of the interaction can be seen when comparing our hadronic phase shifts with the current SAID solution (WI08); there is general agreement in the p waves, save for the ~1/21- hadronic phase shift.
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%K ¦ÐN<
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%K Elastic Scattering
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%K Hadronic Phase Shifts
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%K Coupling Constants
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%K Threshold Constants
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=23824