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Experimental study of the eta-meson interaction with two-nucleons | | P. Moskal
; H.-H. Adam
; A. Budzanowski
; R. Czyzykiewicz
; D. Grzonka
; M. Janusz
; L. Jarczyk
; B. Kamys
; A. Khoukaz
; K. Kilian
; P. Kowina
; N. Lang
; T. Lister
; W. Oelert
; T. Rozek
; R. Santo
; G. Schepers
; T. Sefzick
; M. Siemaszko
; J. Smyrski
; S. Steltenkamp
; A. Strzalkowski
; P. Winter
; M. Wolke
; P. Wustner
; W. Zipper
; | | Date: |
2 Aug 2002 | | Journal: | Proceedings of Meson 2002: 7th International Workshop on Production, Properties and Interaction of Mesons, edited by L. Jarczyk, A. Magiera, C. Guaraldo, H. Machner, World Scientific (2003) 375. (ISBN 981-238-160-0) | | Subject: | nucl-ex | | Affiliation: | Jagellonian U.; Julich, Forschungszentrum; Munster U.; Cracow, INP; Silesia U. | | Abstract: | By means of the COSY-11 detection system, using a stochastically cooled proton beam of the cooler synchrotron COSY and a hydrogen cluster target, we have performed a high statistics measurement of the pp --> pp eta reaction at an excess energy of Q = 15.5 MeV. The experiment was based on the four-momentum determination of both outgoing protons. This permits to identify pp --> pp eta events and to derive the complete kinematical information of the eta-p-p-system allowing for subsequent investigations of the eta-p interaction. The observed spectrum of the invariant mass of the proton-proton system deviates strongly from the phase-space distribution revealing the influence of the final-state-interaction among the outgoing particles or nontrivial features of the primary production mechanism. | | Source: | arXiv, nucl-ex/0208004 | | Services: | Forum | Review | PDF | Favorites | |
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