This title appears in the Scientific Report :
2008
Please use the identifier:
http://hdl.handle.net/2128/3143 in citations.
Analysis of the differential cross sections for the reaction pp -> ppK+K- in view of the K+K- interaction
Analysis of the differential cross sections for the reaction pp -> ppK+K- in view of the K+K- interaction
Measurement of the pp $\rightarrow$ppK$^{+}K^{-}$ reaction, performed with the experiment COSY-11 at the Cooler Synchrotron COSY, show a significant difference between the obtained excitation function and theoretical expectations including pp FSI. The discrepancy may be assigned to the influence of...
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Personal Name(s): | Silarski, Michal (Corresponding author) |
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Contributing Institute: |
Experimentelle Hadronstruktur; IKP-1 |
Imprint: |
Jülich
Forschungszentrum Jülich Gmbh Zentralbibliothek, Verlag
2008
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Physical Description: |
37 p. |
Dissertation Note: |
Krakow, Univ., Dipl., 2008 |
Document Type: |
Diploma Thesis |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Berichte des Forschungszentrums Jülich
4278 |
Subject (ZB): | |
Link: |
OpenAccess |
Publikationsportal JuSER |
Measurement of the pp $\rightarrow$ppK$^{+}K^{-}$ reaction, performed with the experiment COSY-11 at the Cooler Synchrotron COSY, show a significant difference between the obtained excitation function and theoretical expectations including pp FSI. The discrepancy may be assigned to the influence of K$^{+}K^{-}$ or K$^{-}$p interaction. This interaction should manifest itself in the distributions as a function of the invariant masses or two particle subsystems. In particular in the analysis two generalizations of the Dalitz plot proposed by Goldhaber and Nyborg are used. The present Investigations are based on the experimental data determined by the COSY-11 collaboration from two measurements at excess energies of Q = 10 MeV and 28 MeV. The experimental distributions are compared to results of Monte Carlo simulations generated with various parameters of the K$^{+}K^{-}$ and K$^{-}$p interaction. The values of the K$^{+}K^{-}$ scattering length, extracted from two data sets for Q = 10 MeV and 28 MeV amount to: a$_{K^{+}K^{-}} = (11 \pm 8) + i(0\pm 6)$ fm for Q = 10 MeV, and a$_{K^{+}K^{-}} = (0.2 \pm 0.2) + i(0.0 \pm 0.5)$ fm for Q = 28 MeV. Due to the low statistics, the extracted values habe large unvertainties and are consistent with very low values of the real and imaginary part of the scattering length. |