Anomalous A-dependence of diffractive leptoproduction of radial excitation $ρ'(2S)$

J. Nemchik; N. N. Nikolaev; B. G. Zakharov

doi:10.1016/0370-2693(94)91154-1

paper

Anomalous A-dependence of diffractive leptoproduction of radial excitation $ρ^{'} (2 S)$

arXiv:nucl-th/9405025 · doi:10.1016/0370-2693(94)91154-1

Abstract

We predict a strikingly different $A$ and $Q^{2}$ dependence of quasielastic leptoproduction of the $ρ^{0} (1 S)$ -meson and its radial excitation $ρ^{'} (2 S)$ on nuclei. Whereas for the $ρ^{0}$ production nuclear transparency $T_{A}$ decreases monotonically with $A$ , for the $ρ^{'}$ nuclear transparency $T_{A}$ can have the counterintuitive nonmonotonic $A$ -dependence, having the minimum for light nuclei, and increasing with $A$ for medium and heavy nuclei. Strong enhancement of the $ρ^{'} / ρ^{0}$ cross section ratio makes nuclear targets the $ρ^{'}$ -factory. The origin of the anomalous $A$ -dependence is in the interplay of color transparency effects with the nodal structure of the $ρ^{'}$ wave function. The predicted effects take place at moderate $Q^{2}\lsim (2-3)$GeV $^{2}$ , which can be explored in high statistics experiments at CEBAF.

10 pages, 4 figures (to be requested), Juelich preprint KFA-IKP(Th)-1994-18

Anomalous A-dependence of diffractive leptoproduction of radial excitation $ρ^{'} (2 S)$

Abstract

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Anomalous A-dependence of diffractive leptoproduction of radial excitation ρ′(2S)

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Cited by in corpus (17)

Anomalous A-dependence of diffractive leptoproduction of radial excitation $ρ^{'} (2 S)$