This title appears in the Scientific Report :
2009
Please use the identifier:
http://hdl.handle.net/2128/13905 in citations.
Determination of the total width of the eta' meson'
Determination of the total width of the eta' meson'
The aim of this work was to determine the total width of the $\eta$′ meson. The investigated meson was produced via the pp $\rightarrow$ pp$\eta$′ reaction in the collisions of beam protons from COSY synchrotron with protons from a hydrogen cluster target. The COSY–11 detector was used for the measu...
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Personal Name(s): | Czerwinski, Eryk Miroslaw (Corresponding author) |
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Contributing Institute: |
Experimentelle Hadronstruktur; IKP-1 |
Imprint: |
Jülich
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
2009
|
Physical Description: |
II, 60 p. |
Dissertation Note: |
Jagiellonian University, Kraków |
Document Type: |
Dissertation / PhD Thesis |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Berichte des Forschungszentrums Jülich
4314 |
Subject (ZB): | |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
The aim of this work was to determine the total width of the $\eta$′ meson. The investigated meson was produced via the pp $\rightarrow$ pp$\eta$′ reaction in the collisions of beam protons from COSY synchrotron with protons from a hydrogen cluster target. The COSY–11 detector was used for the measurement of the four-momentum vectors of outgoing protons. The mass of unregistered meson was determined via the missing mass technique, while the total width was directly derived from the mass distributions established at five different beam momenta. Parallel monitoring of the crucial parameters (e.g. size and position of the target stream) and the measurement close-to-threshold permitted to obtain mass resolution of FWHM = 0.33 MeV/c$^{2}$. Based on the sample of more than 2300 reconstructed pp $\rightarrow$ pp$\eta$′ events the determined total width of the $\eta$′ meson amounts to $\Gamma$$_{\eta′}$ = 0.226 ± 0.017(stat.) ± 0.014(syst.) MeV, which is the most precise measurement until now. |