Speaker
Marta Luszczak
Description
We evaluate the unintegrated gluon distribution of the proton starting from a parametrization of the color dipole cross section including Dokshitzer--Gribov--Lipatov--Altarelli--Parisi (DGLAP) evolution and saturation effects. To this end, we perform the Fourier-Bessel transform of $\sigma(x,r)/\alpha(r)$. At large transverse momentum of gluons we match the so-obtained distribution to the logarithmic derivative of the collinear gluon distribution. We check our approach by calculating the proton structure function $F_L(x,Q^2)$ finding good agreement with HERA data.
References
Phys. Lett. B 835 (2022) 137582.
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Primary authors
Dr
Agnieszka Łuszczak
(Cracow University of Technolog & DESY Hamburg)
Marta Luszczak
Wolfgang Schaefer
