dorsal/arxiv
View SchemaAnomalous A-dependence of diffractive leptoproduction of radial excitation $\rho'(2S)$
| Authors | J. Nemchik, N. N. Nikolaev, B. G. Zakharov |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9405025 |
| URL | https://arxiv.org/abs/nucl-th/9405025 |
| DOI | 10.1016/0370-2693(94)91154-1 |
| Journal | Phys.Lett. B339 (1994) 194-200 |
Abstract
We predict a strikingly different $A$ and $Q^{2}$ dependence of quasielastic leptoproduction of the $\rho^{0}(1S)$-meson and its radial excitation $\rho '(2S)$ on nuclei. Whereas for the $\rho^{0}$ production nuclear transparency $T_{A}$ decreases monotonically with $A$, for the $\rho'$ 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 $\rho ' /\rho^{0}$ cross section ratio makes nuclear targets the $\rho '$-factory. The origin of the anomalous $A$-dependence is in the interplay of color transparency effects with the nodal structure of the $\rho '$ 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.
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"abstract": "We predict a strikingly different $A$ and $Q^{2}$ dependence of quasielastic\nleptoproduction of the $\\rho^{0}(1S)$-meson and its radial excitation $\\rho\n\u0027(2S)$ on nuclei. Whereas for the $\\rho^{0}$ production nuclear transparency\n$T_{A}$ decreases monotonically with $A$, for the $\\rho\u0027$ nuclear transparency\n$T_{A}$ can have the counterintuitive nonmonotonic $A$-dependence, having the\nminimum for light nuclei, and increasing with $A$ for medium and heavy nuclei.\nStrong enhancement of the $\\rho \u0027 /\\rho^{0}$ cross section ratio makes nuclear\ntargets the $\\rho \u0027$-factory. The origin of the anomalous $A$-dependence is in\nthe interplay of color transparency effects with the nodal structure of the\n$\\rho \u0027$ wave function. The predicted effects take place at moderate\n$Q^{2}\\lsim (2-3)$GeV$^{2}$, which can be explored in high statistics\nexperiments at CEBAF.",
"arxiv_id": "nucl-th/9405025",
"authors": [
"J. Nemchik",
"N. N. Nikolaev",
"B. G. Zakharov"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/0370-2693(94)91154-1",
"journal_ref": "Phys.Lett. B339 (1994) 194-200",
"title": "Anomalous A-dependence of diffractive leptoproduction of radial excitation $\\rho\u0027(2S)$",
"url": "https://arxiv.org/abs/nucl-th/9405025"
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