The gluon content of the proton, in the high-energy regime, is embodied by the unintegrated gluon distribution (UGD), which describes the gluon emission probability, with a given longitudinal momentum fraction and transverse momentum. The UGD, formulated within the κ-factorization approach, has universal validity, and several models for it have been proposed so far. We will show that the polarized ρ-meson leptoproduction at HERA is a non-trivial testfield for discriminating among existing models of UGD.
Leptoproduction of ρ mesons as discriminator for the unintegrated gluon distribution in the proton
Celiberto F. G.;Papa A.
2019-01-01
Abstract
The gluon content of the proton, in the high-energy regime, is embodied by the unintegrated gluon distribution (UGD), which describes the gluon emission probability, with a given longitudinal momentum fraction and transverse momentum. The UGD, formulated within the κ-factorization approach, has universal validity, and several models for it have been proposed so far. We will show that the polarized ρ-meson leptoproduction at HERA is a non-trivial testfield for discriminating among existing models of UGD.File in questo prodotto:
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