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We investigate the angular correlation between pions and photons produced in deuteron-gold collisions at RHIC and proton-lead collisions at LHC using the Color Glass Condensate formalism and make predictions for the dependence of the…

Nuclear Theory · Physics 2009-07-22 Jamal Jalilian-Marian

We investigate inclusive prompt photon and semi-inclusive prompt photon-hadron production in high energy proton-nucleus collisions using the Color Glass Condensate (CGC) formalism which incorporates non-linear dynamics of gluon saturation…

High Energy Physics - Phenomenology · Physics 2012-08-17 Jamal Jalilian-Marian , Amir H. Rezaeian

We study diffractive vector meson production in ultra-peripheral collisions (UPCs) of heavy nuclei, utilizing a theoretical framework based on the Color Glass Condensate (CGC) formalism. We focus on Au+Au, U+U, Ru+Ru, Zr+Zr, and Pb+Pb…

Nuclear Theory · Physics 2023-10-25 Heikki Mäntysaari , Farid Salazar , Björn Schenke , Chun Shen , Wenbin Zhao

We extend a recent global Bayesian analysis of diffractive $\mathrm{J}/\psi$ production in $\gamma+p$ and $\gamma+\mathrm{Pb}$ collisions within the color glass condensate (CGC) framework to investigate potential modifications of the…

High Energy Physics - Phenomenology · Physics 2025-09-17 Heikki Mäntysaari , Hendrik Roch , Farid Salazar , Björn Schenke , Chun Shen , Wenbin Zhao

The exclusive $\Upsilon$ photoproduction in ultraperipheral proton-nucleus and nucleus-nucleus collisions at LHC energies is being investigated using pQCD framework which constrain the gluon distribution in the proton and nuclei at low $x$.…

High Energy Physics - Phenomenology · Physics 2017-11-17 Dipanwita Dutta , Ruchi Chudasama

Vector meson photoproduction is an important probe of nuclear structure. Light vector mesons are most sensitive to low$-x$ structure, as long as they are not too light for perturbative QCD calculations. The $\rho'$ is of interest as an…

High Energy Physics - Phenomenology · Physics 2025-12-03 Neha Devi , Minjung Kim , Spencer R. Klein , Janet Seger

We perform a global Bayesian analysis of diffractive $\mathrm{J}/\psi$ production in $\gamma+p$ and $\gamma+\mathrm{Pb}$ collisions within a Color Glass Condensate based framework. Using data from HERA and the LHC, we find that a…

High Energy Physics - Phenomenology · Physics 2025-09-01 Heikki Mäntysaari , Hendrik Roch , Farid Salazar , Björn Schenke , Chun Shen , Wenbin Zhao

The comparison of photoproduction cross sections for $c\bar{c}$ and b-b(bar) in PbPb and pPb collisions can give sensitivity to nuclear shadowing effects. The photoproduction of vector mesons is even more sensitive to the underlying gluon…

Nuclear Theory · Physics 2012-10-25 Adeola Adeluyi , C. A. Bertulani , M. J. Murray

We provide the first calculation of two-gluon production at mid-rapidity in ultra-peripheral collisions in the Color Glass Condensate framework. To estimate systematic uncertainty associated with poor understanding of the wave function of…

High Energy Physics - Phenomenology · Physics 2022-12-28 Haowu Duan , Alexander Kovner , Vladimir V. Skokov

We show that gluon saturation gives rise to a strong modification of the scaling in both the nuclear mass number $A$ and the virtuality $Q^2$ of the vector meson production cross-section in exclusive deep-inelastic scattering off nuclei. We…

Nuclear Theory · Physics 2018-05-29 Heikki Mäntysaari , Raju Venugopalan

The strong electromagnetic fields carried by relativistic highly charged ions make heavy-ion colliders attractive places to study photonuclear interactions and two-photon interactions. At RHIC, three experiments have studied coherent…

Nuclear Experiment · Physics 2008-10-21 Spencer R. Klein

Due to the coherence of all the protons in a nucleus, there are very strong electromagnetic fields of short duration in relativistic heavy ion collisions. They give rise to quasireal photon-photon and photon-nucleus collisions with a large…

High Energy Physics - Phenomenology · Physics 2016-09-06 K. Hencken , P. Stagnoli , D. Trautmann , G. Baur

We apply the Color Glass Condensate formalism to photon $+$ hadron production cross section in high energy deuteron (proton)-gold collisions at RHIC. We investigate the dependence of the production cross section on the angle between the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jamal Jalilian-Marian

We investigate the photoproduction of $\rho$ mesons in ultraperipheral heavy ion collisions at RHIC and LHC energies in the dipole approach and within two phenomenological models based on the the Color Glass Condensate (CGC) formalism. We…

High Energy Physics - Phenomenology · Physics 2009-11-10 V. P. Goncalves , M. V. T. Machado

By using the Reggeometric Pomeron model for vector meson production which successfully describes the high energy lepton-nucleon data, we analyse the light meson production in ultra-peripheral heavy ion collisions at the Large Hadron…

High Energy Physics - Phenomenology · Physics 2023-04-05 László Jenkovszky , Érison S. Rocha , Magno V. T. Machado

The exclusive $\Upsilon$ photoproduction in proton-proton and proton - nucleus collisions at LHC energies is investigated using the color dipole formalism and considering different models for the $\Upsilon$ wave function and forward dipole…

High Energy Physics - Phenomenology · Physics 2015-06-22 V. P. Goncalves , B. D. Moreira , F. S. Navarra

The production of forward $J/\psi$ mesons in proton-nucleus collisions can provide important information on gluon saturation. In a previous work we studied this process in the Color Glass Condensate framework, describing the target using a…

High Energy Physics - Phenomenology · Physics 2016-11-23 B. Ducloué , T. Lappi , H. Mäntysaari

Ultraperipheral collisions at the LHC and RHIC offer the highest currently available energy for photon-nucleon and photon-nucleus collisions. Thus they are a valuable tool for studying the gluonic structure of hadrons and nuclei at small…

High Energy Physics - Phenomenology · Physics 2021-07-21 Tuomas Lappi

Using the color glass condensate formalism, we study the nuclear modification of forward $J/\psi$ and $D$ meson production in high energy proton-nucleus collisions at the LHC. We show that relying on the optical Glauber model to obtain the…

High Energy Physics - Phenomenology · Physics 2016-12-15 B. Ducloué , T. Lappi , H. Mäntysaari

We re-evaluate the nuclear suppression of forward $J/\psi$ production at high energy in the Color Glass Condensate framework. We use the collinear approximation for the projectile proton probed at large $x$ and an up to date dipole cross…

High Energy Physics - Phenomenology · Physics 2015-09-17 B. Ducloué , T. Lappi , H. Mäntysaari