Systematic effects in the determination of the piNN Coupling from pbar p -> nbar n differential cross section

Details Systematic effects in the determination of the piNN Coupling from pbar p -> nbar n differential cross section Systematic effects in the determination of the piNN Coupling from pbar p -> nbar n differential cross section

1996-12-19

arxiv.org/abs/hep-ph/9612420v2

Phys.Lett.B393:167-174,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LaTeX, 4 encapsulated Postscript figures (uses epsf.tex), to be published in Phys. lett. B

Scientific paper

10.1016/S0370-2693(96)01601-2

We show that the $\pi NN$ coupling constant extracted model-independently from $\bar pp$ charge exchange is subject to a systematic correction, and, more importantly, that the strong absorption in the critical region prevents a determination of the coupling constant to high precision using this process. This attenuates the possible conflict with the value determined from the np charge exchange cross sections.

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