Exclusive emissions of rho-mesons and the unintegrated gluon distribution
Andrèe Dafne Bolognino, Francesco Giovanni Celiberto, Dmitry Yu. Ivanov, Alessandro Papa
SciPost Phys. Proc. 8, 089 (2022) · published 13 July 2022
- doi: 10.21468/SciPostPhysProc.8.089
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Proceedings event
28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects
Abstract
Exclusive emissions of vector mesons in forward directions of rapidity offer us a faultless chance to probe the proton structure at small-$x$. A high-energy factorization formula is established within BFKL, given as the convolution of an impact factor depicting the forward-meson emission and of an unintegrated gluon distribution (UGD) driving the gluon evolution at small-$x$. As a nonperturbative quantity, the UGD is not well known and several models for it exist. We present recent progresses on the study of the exclusive forward $\rho$-meson leptoproduction at HERA and EIC energies, showing how osbervables sensitive to different polarization states of the $\rho$-particle act as discriminators for the existing UGD models.
Cited by 7
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 2 Andrèe Dafne Bolognino,
- 1 3 4 Francesco Giovanni Celiberto,
- 5 Dmitry Yu. Ivanov,
- 1 2 Alessandro Papa
- 1 Istituto Nazionale di Fisica Nucleare / National Institute for Nuclear Physics [INFN]
- 2 Università della Calabria / University of Calabria [UNICAL]
- 3 European Centre for Theoretical Studies in Nuclear Physics and Related Areas [ECT]
- 4 Fondazione Bruno Kessler [FBK]
- 5 Sobolev Institute of Mathematics