The K^- \alpha scattering length and the reaction dd \to \alpha K^+ K^-
Nuclear Theory
2007-05-23 v1 High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
We present predictions for the the K^- \alpha scattering length obtained within the framework of the multiple scattering approach. Evaluating the pole position of the K^- \alpha scattering amplitude within the zero range approximation, we find a loosely bound K^- \alpha state with a binding energy of E_R = -2 ... -7 MeV and a width \Gamma_R = 11 ... 18 MeV. We propose to measure the K^- \alpha scattering length through the final state interaction between the \alpha and K^- meson produced in the reaction dd \to \alpha K^+ K^-. It is found that the K^-\alpha invariant mass distribution from this reaction at energies near the threshold provides a new tool to determine the s-wave K^- \alpha scattering length.
Keywords
Cite
@article{arxiv.nucl-th/0503076,
title = {The K^- \alpha scattering length and the reaction dd \to \alpha K^+ K^-},
author = {V. Yu. Grishina and L. A. Kondratyuk and A. Sibirtsev and M. Büscher and S. Krewald and U. -G. Meißner and F. P. Sassen},
journal= {arXiv preprint arXiv:nucl-th/0503076},
year = {2007}
}
Comments
6 pages, 3 PS figures