On the determination of the $D$ meson width in the nuclear medium with the transparency ratio

Abstract

We have studied the feasibility of the experimental determination of the width of a $D$ meson in a nuclear medium by using the method of the nuclear transparency. The cross section for inclusive production of a $D^{+}$ in different nuclei is evaluated, taking care of the $D^{+}$ absorption in the nucleus, or equivalently, the survival probability of the $D^{+}$ in its way out of the nucleus from the point of production. We use present values of the in medium width of $D$ mesons and calculate ratios of the cross sections for different nuclei to the ${}^{12}\text{C}$ nucleus as reference. We find ratios of the order of $0.6$ for heavy nuclei, a large deviation from unity, which indicates that the method proposed is adequate to measure this relevant magnitude, so far only known theoretically.

arXiv comment9 pages, 4 figures

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Cited by in corpus (3)

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• Absorption of $\psi (2S)$ mesons in nuclei