Exclusive production of $$\rho $$ -mesons in high-energy factorization at HERA and EIC
A. Bolognino (Dipartimento di Fisica, Università della Calabria, Arcavacata di Rende, Cosenza, 87036, Italy, Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Cosenza, Arcavacata di Rende, Cosenza, 87036, Italy); F. Celiberto (European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT*), Villazzano, Trento, 38123, Italy, Fondazione Bruno Kessler (FBK), Povo, Trento, 38123, Italy, INFN-TIFPA Trento Institute of Fundamental Physics and Applications, Povo, Trento, 38123, Italy); D. Ivanov (Sobolev Institute of Mathematics, Novosibirsk, 630090, Russia); A. Papa (Dipartimento di Fisica, Università della Calabria, Arcavacata di Rende, Cosenza, 87036, Italy, Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Cosenza, Arcavacata di Rende, Cosenza, 87036, Italy); W. Schäfer (Institute of Nuclear Physics Polish Academy of Sciences, ul. Radzikowskiego 152, Kraków, 31-342, Poland); et al - Show all 6 authors
We study cross sections for the exclusive diffractive leptoproduction of $$\rho $$ -mesons, $$\gamma ^*~p~\rightarrow ~\rho ~p$$ , within the framework of high-energy factorization. Cross sections for longitudinally and transversally polarized mesons are shown. We employ a wide variety of unintegrated gluon distributions available in the literature and compare to HERA data. The resulting cross sections strongly depend on the choice of unintegrated gluon distribution. We also present predictions for the proton target in the kinematics of the Brookhaven EIC.
