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20 April 2024

» arxiv » 0912.1592

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Invariant mass distributions for the pp to p p eta reaction at Q=10 MeV
P. Moskal ; R. Czyzykiewicz ; E. Czerwinski ; D. Gil ; D. Grzonka ; L. Jarczyk ; B. Kamys ; A. Khoukaz ; J. Klaja ; P. Klaja ; W. Krzemien ; W. Oelert ; J. Ritman ; T. Sefzick ; M. Siemaszko ; M. Silarski ; J. Smyrski ; A. Taschner ; M. Wolke ; P. Wustner ; J. Zdebik ; M.J. Zielinski ; W. Zipper ;
Date:	8 Dec 2009
Abstract:	Proton-proton and proton-eta invariant mass distributions and the total cross section for the pp to pp eta reaction have been determined near the threshold at an excess energy of Q=10 MeV. The experiment has been conducted using the COSY-11 detector setup and the cooler synchrotron COSY. The determined invariant mass spectra reveal significant enhancements in the region of low proton-proton relative momenta, similarly as observed previously at higher excess energies of Q=15.5 MeV and Q= 40MeV.
Source:	arXiv, 0912.1592
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