Asymptotic gluon density within the color dipole picture in light of HERA high-precision data

نویسندگان

چکیده

We present an analysis of the most precise set HERA data within color dipole formalism, by using analytical gluon density, based on double-logarithm approximation DGLAP equations in asymptotic limit scaling variable, $\sigma=\log{(1/x)}\log{(\log{(Q^2/Q_ 0^2)})}\rightarrow \infty$. Fits to data, including charm and bottom quarks are performed demonstrate efficiency model describing reduced cross section, $\sigma_{r}$, wide range $Q^2:(1.5,500)$ GeV$^2$ for two models parton saturation effects. also give predictions $F_{2}^{c\bar{c}}$ , $F_{2}^{b\bar{b}}$ $F_{L}$, all reasonably well $Q^2:(2.5,120)$ GeV$^2$. Total sections exclusive photoproduction $J/\psi$ $\rho$ calculated successfully compared recent measurements at LHCb.

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ژورنال

عنوان ژورنال: Physical review

سال: 2023

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physrevd.107.014004