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Empirical regularities in the $x$--dependence of nuclear J/Psi suppression

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arxiv hep-ph/9502299 v1 pith:N3AU5NI2 submitted 1995-02-14 hep-ph

classification hep-ph
keywords empiricalparameterssigmathreeabsorptionacceptableadjustablearound
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abstract

The measured ratios $R(x,A_1/A_2)$ for $J/\Psi$, $\Psi'$ and $\mu^+\mu^-$ production on two different targets $A_1, A_2$ as a function of the fractional momentum $x$ of the final state are well fit with a very simple functional form having three adjustable parameters. An empirical relation is found between the three parameters of the fit. The deduced $J/\Psi$ absorption cross sections $\sigma_{abs}$ cluster around two values of which only $\sigma_{abs} = 5.8 \pm 0.2$ mb seems acceptable.

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Cited by 2 Pith papers

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    nucl-th 2025-02 conditional novelty 4.0 of 10

    Near-threshold photoproduction of ψ(2S) mesons on nuclei is predicted to show measurable sensitivity to the unknown ψ(2S)-nucleon absorption cross section, motivating measurements at an upgraded CEBAF.

  2. Absorption of 1$P$-wave heavy charmonium $\chi_{c1}(1P)$ in nuclei

    nucl-th 2026-04 unverdicted novelty 3.0 of 10

    Calculations of excitation functions, momentum spectra, and transparency ratios for χ_c1(1P) on 12C and 184W nuclei demonstrate sensitivity to different absorption cross-section scenarios, proposed for extraction via ...

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