Description: Comparative studies of the interaction in the low energy pp eta and pp eta-prime systems.

This title appears in the Scientific Report : 2009

Comparative studies of the interaction in the low energy pp eta and pp eta-prime systems.

The COSy-11 collaboration measured the pp $\rightarrow$ pp$\eta$ and pp $\rightarrow$ pp$\eta$' reactions in order to perform comparative studies of the interactions within the proton-proton-meson system. This thesis presents in detail the analysis of the pp $\rightarrow$ pp$\eta$' reactio...

Personal Name(s):	Klaja, Pawel (Corresponding author)
Contributing Institute:	Experimentelle Hadronstruktur; IKP-1
Imprint:	Jülich Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag 2009
Physical Description:	90 p.
Dissertation Note:	Jagiellonian University, Krakow
Document Type:	Book Dissertation / PhD Thesis
Research Program:	Physik der Hadronen und Kerne
Series Title:	Berichte des Forschungszentrums Jülich 4315
Subject (ZB):	Hochschulschrift > Dissertation (Univ.)
Link:	OpenAccess
	Publikationsportal JuSER

Please use the identifier: http://hdl.handle.net/2128/9857 in citations.

The COSy-11 collaboration measured the pp $\rightarrow$ pp$\eta$ and pp $\rightarrow$ pp$\eta$' reactions in order to perform comparative studies of the interactions within the proton-proton-meson system. This thesis presents in detail the analysis of the pp $\rightarrow$ pp$\eta$' reaction which was measured at the proton beam monentum of 3.260 GeV/c. The elaboration results in differential distributions of squared invariant proton-proton (s$_{pp}$ and proton-$\eta$' (s$_{p\eta'}$ masses, as well as in angular distributions and the total cross section at an excess energy of 16,4 MeV. The differential distributions s$_{pp}$ and s$_{p\eta'}$ are compared to theoretical predictions and to the analogous spectra determined for the pp $\rightarrow$ pp$\eta$ reaction. The comparison of the results for the $\eta$ and $\eta$' meson production rather excludes the hypothesis that the enhancement observed in the invariant mass distributions is due to the meson-proton interaction. Further, the shapes of the distributions do not favour any of the postulated theoretical models.