This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1142/S0217751X05021452 in citations.
The final state interaction in the reactions pp to K (Lambda p) and pp to Pi (np)
The final state interaction in the reactions pp to K (Lambda p) and pp to Pi (np)
The reactions pp -> K+(Lambda p) and pp -> pi(+)(np) are measured with high missing mass resolution using the spectrometer BIG KARL at COSY. The pp -> K+(Lambda p) missing mass spectrum is analyzed with respect to the final state interaction near the Lambda p production threshold. The obser...
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Personal Name(s): | Hinterberger, F. |
---|---|
Nedev, S. N. / Siudak, R. | |
Contributing Institute: |
Institut 1 (Experimentelle Kernphysik I); IKP-E-I |
Published in: | International journal of modern physics / A, 20 (2005) S. 291 |
Imprint: |
Singapur
World Scientific Publ.
2005
|
Physical Description: |
291 |
DOI: |
10.1142/S0217751X05021452 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen |
Series Title: |
International Journal of Modern Physics A
20 |
Subject (ZB): | |
Publikationsportal JuSER |
The reactions pp -> K+(Lambda p) and pp -> pi(+)(np) are measured with high missing mass resolution using the spectrometer BIG KARL at COSY. The pp -> K+(Lambda p) missing mass spectrum is analyzed with respect to the final state interaction near the Lambda p production threshold. The observed spectrum can be described by factorizing the reaction amplitude in terms of a production amplitude and a final state enhancement factor. Parametrizing the enhancement factor in terms of the inverse Jost function allows a direct extraction of the low-energy phase-equivulent potential parameters. Constraints on the singlet and triplet scattering lengths and effective ranges can be deduced by fitting simultaneously the Lambda p invariant mass spectrum and the total cross section data of the free Lambda p scattering. A similar analysis shows that the reaction pp -> pi(+) (np) is dominated by the triplet contribution to the (np) final state interaction. An upper limit of a possible singlet contribution is deduced. Finally, the reaction pp -> pi(+)(np) allows to test the Faldt-Wilkin Extrapolation theorem where the triplet (np) continuum wave function is extrapolated to the wave function of the deuteron. |