Analysing power A_y in the reaction p(pol) p --> p p eta close to threshold

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

doi:10.1016/s0370-2693(02)02417-6

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Analysing power A_y in the reaction p(pol) p --> p p eta close to threshold

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Abstract

Measurements of the eta meson production with a polarised proton beam in the reaction p(pol) p --> p p eta have been carried out at an excess energy of Q = 40 MeV. The dependence of the analysing power A_y on the polar angle theta^*_q of the eta meson in the center of mass system (CMS) has been studied. The data indicate the possibility of an influence of p- and d-waves to the close to threshold eta production.

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P. Winter, H. -H. Adam, F. Bauer, A. Budzanowski, R. Czyzykiewicz, T. Goetz, D. Grzonka, L. Jarczyk, A. Khoukaz, K. Kilian, C. Kolf, P. Kowina, N. Lang, T. Lister, P. Moskal, W. Oelert, C. Quentmeier, T. Rozek, R. Santo, G. Schepers, T. Sefzick, M. Siemaszko, J. Smyrski, S. Steltenkamp, A. Strzalkowski, M. Wolke, P. Wuestner, W. Zipper. 2002-11-21. Analysing power A_y in the reaction p(pol) p --> p p eta close to threshold. https://doi.org/10.1016/s0370-2693(02)02417-6

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