Suppression versus enhancement of heavy quarkonia in pA collisions

  title={Suppression versus enhancement of heavy quarkonia in pA collisions},
  author={Boris Z. Kopeliovich and Ivan Schmidt and Marat Siddikov},
  journal={Physical Review C},
We describe production of heavy quarkonia in pA collisions within the dipole approach, assuming dominance of the perturbative color-singlet mechanism (CSM) in the pT -integrated cross section. Although accounting for a nonzero heavy Q-Q̄ separation is a higher twist correction, usually neglected, we found it to be the dominant source of nuclear effects, significantly exceeding the effects of leading twist gluon shadowing and energy loss. Moreover, this contribution turns out to be the most… 

Heavy quarkonium in the saturated environment of high-multiplicity pp collisions

High-multiplicity pp collisions exhibit features, traditionally associated with nuclear effects. Coherence motivates to treat high-multiplicity pp, pA and AA collisions on an equal footing. We rely

Spacetime development of in-medium hadronization: Scenario for leading hadrons

We present a perturbative QCD based model for vacuum and in-medium hadronization. The effects of induced energy loss and nuclear absorption have been included. The main objective is the determination

Threshold Upsilon-meson photoproduction at the EIC and EicC

High-accuracy Υ-meson photoproduction data from EIC and EicC experiments will allow the 7 measurement of the near-threshold total cross section of the reaction γp → Υp, from which the 8 absolute

Strangeness production in high-multiplicity events

In this paper we analyze in detail the production of strangeness in proton-proton collisions in the kinematics of large transverse momenta pT of produced hadrons. Using the color dipole framework, we

Single diffractive production of open heavy flavor mesons

In this paper, we discuss the single diffractive production of open heavy flavor mesons and nonprompt charmonia in $pp$ collisions. Using the color dipole approach, we found that the single

BFKL Pomeron loop contribution in diffractive photoproduction and inclusive hadroproduction of J/ψ and ϒ

Abstract We analyze contributions to the heavy vector meson production with large transverse momentum in proton-proton and diffractive photon-proton scattering driven by an exchange of two

Forward rapidity J/ψ production as a function of charged-particle multiplicity in pp collisions at $$ \sqrt{s} $$ = 5.02 and 13 TeV

Abstract The production of J/ψ is measured as a function of charged-particle multiplicity at forward rapidity in proton-proton (pp) collisions at center-of-mass energies $$ \sqrt{s} $$ s =

$$J/{\psi }$$J/ψ production in hadron scattering: three-pomeron contribution

  • E. LevinM. Siddikov
  • Physics
    Proceedings of European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2019)
  • 2020
In this paper we discuss the inclusive $$J/\psi $$J/ψ production in proton–proton collisions from fusion of three pomerons. We demonstrate that this mechanism gets dominant contribution from the

$$J/\psi $$-p scattering length from the total and differential photoproduction cross sections

The $J/\psi$-$p$ scattering length, $\alpha_{J/\psi p}$, can be extracted from the $J/\psi$ photoproduction cross section near threshold using the Vector Meson Dominance (VMD) model to relate the

Contribution of digluons to charmonia production



Heavy quarkonium production: Nontrivial transition from pA to AA collisions

Two novel QCD effects, double-color filtering and mutual boosting of the saturation scales in colliding nuclei, affect the transparency of the nuclei for quark dipoles in comparison with

Gluon shadowing in heavy flavor production off nuclei

Heavy-Quarkonium Production in High Energy Proton-Proton Collisions at RHIC

We update the study of the total {psi} and {Upsilon} production cross section in proton-proton collisions at RHIC energies using the QCD-based Color-Singlet (CS) Model, including next-to-leading

Nuclear effects in the Drell-Yan process at very high energies

We study Drell-Yan (DY) dilepton production in proton(deuterium)-nucleus and in nucleus-nucleus collisions within the light-cone color-dipole formalism. This approach is especially suitable for

Why heavy and light quarks radiate energy with similar rates

The dead-cone effect has been predicted to reduce the magnitude of energy loss and jet quenching for heavy flavors produced with large p{sub T} in heavy-ion collisions. On the contrary, data from the

Forward $J/\psi$ production in proton-nucleus collisions at high energy

Inclusive production of $J/\psi$ mesons, especially at forward rapidities, is an important probe of small-x gluons in protons and nuclei. In this paper we re-evaluate the production cross sections in

On relevance of triple-gluon fusion in J /ψ hadroproduction

A contribution to J /ψ hadroproduction is analyzed in which the meson production is mediated by three-gluon partonic state, with two gluons coming from the target and one gluon from the projectile.

Global analysis of nuclear parton distributions

We present a new global QCD analysis of nuclear parton distribution functions and their uncertainties. In addition to the most commonly analyzed data sets for the deep-inelastic scattering of charged