E.R. Cazaroto

Heavy quark production and gluon saturation in double parton scattering at the LHC

The production of

Could saturation effects be visible in a future electron–ion collider?

c\bar{c}c\bar{c}

Constraining the nuclear gluon distribution in eA processes at RHIC

,

Heavy quark production at LHC in the color dipole formalism

b\bar{b}b\bar{b}

Non-linear QCD dynamics in two-photon interactions at high energies

and

On the energy dependence of the D+/D− production asymmetry

c\bar{c}b\bar{b}

Tetraquark Production in Double Parton Scattering

pairs considering double parton scattering at LHC energies is investigated. We estimate the contribution of saturation effects to the different final states and predict the energy dependence of the cross sections. Moreover, we estimate the ratio between the double and single parton scattering cross sections for the full rapidity range of the LHC and for the rapidity range of the LHCb experiment. For the full rapidity range we confirm a previous prediction, namely that for charm production the double parton scattering contribution becomes comparable with the single parton scattering one at LHC energies. We also demonstrate that this result remains valid when one introduces saturation effects in the calculations. Finally we show that the production of

Exclusive processes in electron–ion collisions

c\bar{c}b\bar{b}

Tetraquark Production in Hadronic Collisions

contributes significantly to bottom production. For the LHCb kinematical range the ratio is strongly reduced.

Charm production asymmetry at the LHC

Abstract We expect to observe parton saturation in a future electron–ion collider. In this Letter we discuss this expectation in more detail considering two different models which are in good agreement with the existing experimental data on nuclear structure functions. In particular, we study the predictions of saturation effects in electron–ion collisions at high energies, using a generalization for nuclear targets of the b-CGC model, which describes the ep HERA quite well. We estimate the total, longitudinal and charm structure functions in the dipole picture and compare them with the predictions obtained using collinear factorization and modern sets of nuclear parton distributions. Our results show that inclusive observables are not very useful in the search for saturation effects. In the small x region they are very difficult to disentangle from the predictions of the collinear approaches. This happens mainly because of the large uncertainties in the determination of the nuclear parton distribution functions. On the other hand, our results indicate that the contribution of diffractive processes to the total cross section is about 20% at large A and small Q 2 , allowing for a detailed study of diffractive observables. The study of diffractive processes becomes essential to observe parton saturation.