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19 April 2024

» arxiv » nucl-ex/0001001

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Energy Dependence of the Near-Threshold Total Cross-Section for the pp --> pp eta' Reaction
P. Moskal ; H.-H. Adam ; J.T. Balewski ; V. Baru ; A. Budzanowski ; D. Grzonka ; J. Haidenbauer ; L. Jarczyk ; A. Khoukaz ; K. Kilian ; M. Koehler ; P. Kowina ; A. Kudryavtsev ; N. Lang ; T. Lister ; W. Oelert ; C. Quentmeier ; R. Santo ; G. Schepers ; T. Sefzick ; S. Sewerin ; M. Siemaszko ; J. Smyrski ; A. Strzalkowski ; M. Wolke ; P. Wuestner ; W. Zipper ;
Date:	1 Dec 1999
Journal:	Phys.Lett. B474 (2000) 416-422
Subject:	nucl-ex
Abstract:	Total cross sections for the pp --> pp eta’ reaction have been measured in the excess energy range from Q = 1.53 MeV to Q = 23.64 MeV. The experiment has been performed at the internal installation COSY-11 using a stochastically cooled proton beam of the COoler SYnchrotron COSY and a hydrogen cluster target. The determined energy dependence of the total cross section weakens the hypothesis of the S-wave repulsive interaction between the eta’ meson and the proton. New data agree well with predictions based on the phase-space distribution modified by the proton-proton final-state-interaction (FSI) only.
Source:	arXiv, nucl-ex/0001001
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