Measuring the $φ$ meson width in the medium from $p$ induced $φ$ production in nuclei

Details Measuring the $φ$ meson width in the medium from $p$ induced $φ$ production in nuclei Measuring the $φ$ meson width in the medium from $p$ induced $φ$ production in nuclei

2004-12-17

arxiv.org/abs/nucl-th/0412066v1

Nucl.Phys. A755 (2005) 495-498

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures, Talk presented at the 10th International Conference on the Structure of Baryons "Baryons 2004", Ecole Poly

Scientific paper

We study the $A$ dependence of the $\phi$ meson production cross section in proton nucleus reactios at energies just above threshold, which are accessible in an experimental facility like COSY. This $A$ dependence has two sources: the distortion of the incident proton and the absorption of the $\phi$ in its way out of the nucleus. This second process reduces the cross section in about a factor two in heavy nuclei. Thus we show that the $A$ dependence of the cross section contains valuable information on the $\phi$ width in the nuclear medium.

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