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Determination of the eta '-Proton Scattering Length in Free Space
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2014 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 113, no 6, 062004- p.Article in journal (Refereed) Published
Abstract [en]

Taking advantage of both the high mass resolution of the COSY-11 detector and the high energy resolution of the low-emittance proton beam of the cooler synchrotron COSY, we determine the excitation function for the pp --> pp eta' reaction close to threshold. Combining these data with previous results, we extract the scattering length for the eta'-proton potential in free space to be Re(alpha(p eta)') = 0 +/- 0.43 fm and Im(alpha(p eta)') = 0.37(-0.16)(+0.40) fm.

Place, publisher, year, edition, pages
2014. Vol. 113, no 6, 062004- p.
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Physical Sciences
URN: urn:nbn:se:uu:diva-240160DOI: 10.1103/PhysRevLett.113.062004ISI: 000345636500003PubMedID: 25148320OAI: oai:DiVA.org:uu-240160DiVA: diva2:776582
Available from: 2015-01-07 Created: 2015-01-05 Last updated: 2015-01-07Bibliographically approved

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Wolke, Magnus
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