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By using a Regge-pole model for vector meson production (VMP), that successfully describes the HERA data, we analyze the connection of VMP cross sections in photon-induced reactions at HERA with those in ultra-peripheral collisions at the…

High Energy Physics - Phenomenology · Physics 2015-06-08 R. Fiore , L. Jenkovszky , V. Libov , M. V. T. Machado , A. Salii

In this work the $k_{\perp}$-factorization formalism is applied to compute the exclusive $Z^0$ boson photoproduction in $ep$ and $eA$ collisions. The study is also extended to $pp$ and $AA$ processes. The nuclear effects are investigated…

High Energy Physics - Phenomenology · Physics 2022-07-20 G. M. Peccini , L. S. Moriggi , M. V. T. Machado

We study the photoproduction of exclusive $2\pi^+2\pi^-$ mesons in ultra-peripheral heavy-ion collisions at RHIC and LHC energies. Predictions in photon-nucleus interactions are calculated for various resonances at central and forward…

High Energy Physics - Phenomenology · Physics 2020-08-26 Mariola Klusek-Gawenda , J. Daniel Tapia Takaki

We study single inclusive hadron production in proton-proton and proton-nucleus collisions in the CGC framework. The parameters in the calculation are obtained by fitting electron-proton deep inelastic scattering data. The obtained…

High Energy Physics - Phenomenology · Physics 2014-06-13 T. Lappi , H. Mäntysaari

The dilepton production is investigated in proton-nucleus collisions in the forward region using the Color Glass Condensate approach. The transverse momentum distribution ($p_T$), more precisely the low $p_T$ region, where the saturation…

High Energy Physics - Phenomenology · Physics 2010-11-30 M. A. Betemps , M. B. Gay Ducati

Deep Inelastic Scattering (DIS) experiments at the planned Electron-Ion Collider will be affected by details of the hadron formation inside the nuclear volume. Besides semi-inclusive particle production experiments decays of the target…

High Energy Physics - Phenomenology · Physics 2020-01-29 A. B. Larionov , M. Strikman

We discuss nuclear cross sections for $AA \to AAV$ and $AA \to AAVV$ reactions with one or two vector mesons in the final state. Our analysis is done in the impact parameter space equivalent photon approximation. This approach allows to…

High Energy Physics - Phenomenology · Physics 2016-12-21 M. Klusek-Gawenda , A. Szczurek

In a previous publication, we have presented a model for the photoproduction of $\mathrm{J/}\psi$ vector mesons off protons, where the proton structure in the impact-parameter plane is described by an energy-dependent hot-spot profile. Here…

High Energy Physics - Phenomenology · Physics 2018-02-28 Jan Cepila , Jesus Guillermo Contreras , Michal Krelina

We apply the target rest frame formalism to photon + heavy quark production cross section in hadronic collisions at high energies. We investigate the dependence of the production cross section on the photon and quark rapidities and…

High Energy Physics - Phenomenology · Physics 2010-12-23 M. A. Betemps , M. V. T. Machado

Rapidity distributions of vector mesons are computed in dipole model proton-lead ultraperipheral collisions(UPCs) at the CERN Larger Hadron Collider(LHC). The dipole model framework is implemented in the calculations of cross sections in…

High Energy Physics - Phenomenology · Physics 2018-05-17 Ya-Ping Xie , Xurong Chen

Exclusive photoproduction of heavy quarkonia in high-energy ultraperipheral ion-ion interactions (gamma A --> V A, where V = J/Psi,Upsilon and the nucleus A remains intact) offers a useful means to constrain the small-x nuclear gluon…

Nuclear Experiment · Physics 2008-12-18 David d'Enterria

We report on our recent investigations in photonuclear production of heavy quarks and vector meson in ultraperipheral heavy ion collisions. In particular, our theoretical predictions are compared with the recent experimental measurements on…

High Energy Physics - Phenomenology · Physics 2008-11-26 V. P. Goncalves , M. V. T. Machado

We predict that the onset of gluon saturation can be uniquely identified using incoherent ${\rm J}/\psi$ production in Pb$\unicode{x2013}$Pb collisions at currently accessible energies of the LHC. The diffractive incoherent photo-production…

High Energy Physics - Phenomenology · Physics 2024-03-28 Jan Cepila , Jesus Guillermo Contreras , Marek Matas , Alexandra Ridzikova

Lead nuclei, accelerated at the LHC, are sources of strong electromagnetic fields that can be used to measure photon-induced interactions in a new kinematic regime. These interactions can be studied in ultra-peripheral p-Pb and Pb-Pb…

Nuclear Experiment · Physics 2019-08-13 E. L. Kryshen

In this paper, we calculate the cross-section for the photoproduction of quark-antiquark pairs in the peripheral collision of ultra-relativistic nuclei, by treating the color field of the nuclei within the Color Glass Condensate model. We…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Gelis , A. Peshier

The strong electromagnetic fields associated with high energy protons and nuclei may lead to exclusive photoproduction of vector mesons in proton-proton and nucleus-nucleus collisions at the LHC. This paper will discuss the expected cross…

High Energy Physics - Phenomenology · Physics 2007-05-23 Joakim Nystrand

The study of azimuthal correlations in particle production at forward rapidities in proton-nucleus collisions provides direct information about high gluon density effects, like gluon saturation, in the nuclear wavefunction. In the…

High Energy Physics - Phenomenology · Physics 2015-06-16 Edmond Iancu , Julien Laidet

We calculate the inclusive and diffractive photoproduction of heavy quarks in proton-proton collisions at Tevatron and LHC energies, where the photon reaches energies larger than those ones accessible at DESY-HERA. The integrated cross…

High Energy Physics - Phenomenology · Physics 2009-09-02 V. P. Goncalves , M. V. T. Machado , A. R. Meneses

The CERN LHC is not only the current energy-frontier collider for parton-parton collisions, but has proven a powerful photon collider providing photon-photon ($\gamma\gamma$) collisions at center-of-mass energies and luminosities never…

High Energy Physics - Phenomenology · Physics 2024-09-30 Nicolas Crépet , David d'Enterria , Hua-Sheng Shao

Photoproduction of heavy quarks in ultraperipheral collisions can help elucidate important features of the physics of heavy quarks in Quantum Chromodynamics (QCD). Due to the dependence on parton distributions it can also potentially offer…

Nuclear Theory · Physics 2012-10-12 Adeola Adeluyi , Trang Nguyen