Study of the eta-proton interaction via the reaction p p --> p p eta

P. Moskal; H. H. Adam; A. Budzanowski; R. Czyzykiewicz; T. Gotz; D. Grzonka; L. Jarczyk; A. Khoukaz; K. Kilian; C. Kolf; P. Kowina; N. Lang; T. Lister; W. Oelert; C. Quentmeier; R. Santo; G. Schepers; T. Sefzick; M. Siemaszko; J. Smyrski; S. Steltenkamp; A. Strzalkowski; P. Winter; M. Wolke; P. Wustner; W. Zipper

arXiv · nucl-ex/0110018

Study of the eta-proton interaction via the reaction p p --> p p eta

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Abstract

A measurement of the pp --> p p eta reaction at the excess energy of Q = 15.5 +- 0.4 MeV has been carried out at the internal beam facility COSY-11 with an integrated luminosity of 811 nb^-1 The number of ~24000 identified events permits a precise determination of total (2.32 +- 0.05 +- 0.35 μb) and differential cross sections. Preliminary investigations show that the angular distribution of the eta meson in the center-of-mass system is isotropic. A qualitative analysis of the Dalitz-plot distribution is presented.

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P. Moskal, H. H. Adam, A. Budzanowski, R. Czyzykiewicz, T. Gotz, D. Grzonka, L. Jarczyk, A. Khoukaz, K. Kilian, C. Kolf, P. Kowina, N. Lang, T. Lister, W. Oelert, C. Quentmeier, R. Santo, G. Schepers, T. Sefzick, M. Siemaszko, J. Smyrski, S. Steltenkamp, A. Strzalkowski, P. Winter, M. Wolke, P. Wustner, W. Zipper. 2001-10-31. Study of the eta-proton interaction via the reaction p p --> p p eta. https://arxiv.org/abs/nucl-ex/0110018

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