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The exclusive photoproduction of the heavy vector mesons $J/\Psi$ is investigated in the context of peripheral lead-lead collisions for the energies available at the LHC, $\sqrt{s}=2.76$ TeV and $\sqrt{s}=5.02$ TeV. Using the light-cone…

High Energy Physics - Phenomenology · Physics 2018-08-07 M. B. Gay Ducati , S. Martins

This work studies the production of direct photons in relativistic nuclear collisions, along with the production of hadrons. Radiation from the very first instants to the final moments of the evolution is included. The hybrid model used…

Nuclear Theory · Physics 2022-02-01 Charles Gale , Jean-François Paquet , Björn Schenke , Chun Shen

We study the photoproduction of vector mesons off proton and off nuclear targets. We work within the colour dipole model in an approach that includes subnucleon degrees of freedom, so-called hot spots, whose positions in the…

High Energy Physics - Phenomenology · Physics 2018-10-08 J. Cepila , J. G. Contreras , M. Krelina , J. D. Tapia Takaki

Using the framework of collinear factorization in perturbative QCD (pQCD), we analyze the recent data of the LHCb and ALICE collaborations on exclusive photoproduction of J/{\psi} in ultraperipheral pp and AA collisions, respectively. We…

High Energy Physics - Phenomenology · Physics 2015-06-16 V. Guzey , M. Zhalov

Vector mesons are copiously produced in ultra-peripheral collisions. In these collisions, the impact parameter is larger than the sum of the radii of two projectiles, implying that electromagnetic processes become dominant. The cross…

High Energy Physics - Experiment · Physics 2019-08-13 Michal Broz

We make predictions for the t-differential cross section of exclusive vector meson production (EVMP) in electron-ion collisions, with the aim of comparing DGLAP evolution to CGC models. In the current picture for the high-energy nucleus,…

Nuclear Theory · Physics 2015-10-28 G. S. Jackson , W. A. Horowitz

We study coherent diffractive photon and vector meson production in electron-proton and electron-nucleus collisions within the Color Glass Condensate effective field theory. We show that electron-photon and electron-vector meson azimuthal…

High Energy Physics - Phenomenology · Physics 2024-05-07 Heikki Mäntysaari , Kaushik Roy , Farid Salazar , Björn Schenke

We compute diffractive structure functions for both protons and nuclei in the framework of Color Glass Condensate models with impact parameter dependence. These models have previously been shown to provide good agreement with inclusive F_2…

High Energy Physics - Phenomenology · Physics 2009-01-14 H. Kowalski , T. Lappi , C. Marquet , R. Venugopalan

Over the past years the LHC experiments have reported experimental evidences for processes associated to photon-photon and photon-hadron interactions, showing their potential to investigate the production of low- and high-mass systems in…

High Energy Physics - Phenomenology · Physics 2016-10-03 G. Gil da Silveira , V. P. Goncalves , M. M. Jaime

We discuss exclusive electromagnetic production of two neutral $\rho$ mesons in coherent photon-photon processes in ultrarelativistic heavy-ion collisions. The cross section is calculated in the equivalent photon approximation (EPA). Both…

High Energy Physics - Phenomenology · Physics 2009-04-15 M. Kłusek , W. Schäfer , A. Szczurek

We argue that study of the cross section of coherent photo(electro) production of vector mesons off nuclear targets provides an effective method to probe the leading twist hard QCD regimes of color transparency and perturbative color…

High Energy Physics - Phenomenology · Physics 2014-11-17 L. Frankfurt , M. Strikman , M. Zhalov

In this work we estimate the heavy quark production in the interaction of ultra high energy cosmic rays in the atmosphere, considering that the primary cosmic ray is a proton or a photon. At these energies the saturation momentum Q_{sat}^2…

High Energy Physics - Phenomenology · Physics 2010-10-27 V. P. Goncalves , M. V. T. Machado

A comprehensive analysis of the photoproduction of $J/\Psi$ and $\Upsilon$ mesons in peripheral $PbPb$ collisions at the center - of - mass energies of the Large Hadron Collider (LHC) is performed, considering distinct assumptions for the…

Nuclear Experiment · Physics 2025-08-05 Pedro E. A. da Costa , André V. Giannini , Victor P. Goncalves , Bruno D. Moreira

We show that particle production in proton-nucleus (pA) collisions in the Color Glass Condensate model can be related to Deep Inelastic Scattering of leptons on protons/nuclei (DIS). The common building block is the quark antiquark (or…

High Energy Physics - Phenomenology · Physics 2011-01-25 F. Gelis , J. Jalilian-Marian

The exclusive vector meson production in electron-ion collisions for the energies of the future colliders is investigated. We present predictions for the coherent and incoherent $\phi$ and $J/\psi$ production in $eAu$ collisions considering…

High Energy Physics - Phenomenology · Physics 2020-12-02 Victor P. Goncalves , Daniel E. Martins , Celso R. Sena

In this paper we extend the color dipole formalism to the study of leading neutron production in $e + p \rightarrow e + n + X$ collisions at high energies and estimate the related observables, which were measured at HERA and may be analysed…

High Energy Physics - Phenomenology · Physics 2015-11-25 F. Carvalho , V. P. Gonçalves , D. Spiering , F. S. Navarra

Vector meson photoproduction at high energies has attracted increased interest in recent years due to the unique kinematical ranges offered by the LHC experiments. The ALICE and LHCb collaborations have provided measurements of vector meson…

High Energy Physics - Experiment · Physics 2021-09-08 Simone Ragoni

We confront soft Pomeron and gluon saturation models with the first LHC data on inclusive hadron production. We claim that while the first type of models are not able to describe some part of the LHC data, the Colour-Glass-Condensate (gluon…

High Energy Physics - Phenomenology · Physics 2011-07-26 Eugene Levin , Amir H. Rezaeian

We investigate the forward-jet energy spectrum within the Color Glass Condensate framework at 5 TeV center-of-mass energy. In particular, we focus on the kinematic range covered by the CMS-CASTOR calorimeter. We show that our…

High Energy Physics - Phenomenology · Physics 2019-12-25 Heikki Mäntysaari , Hannu Paukkunen

We study nuclear modification factors for single $D$ meson and semileptonic decay lepton $l$ ($=e,\mu$) production in minimum bias proton-nucleus (p$A$) collisions at the LHC in the color-glass-condensate (CGC) framework at leading order in…

High Energy Physics - Phenomenology · Physics 2018-02-06 Hirotsugu Fujii , Kazuhiro Watanabe