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We perform a global Bayesian analysis of diffractive $\mathrm{J}/\psi$ production in $\gamma+p$ and $\gamma+\mathrm{Pb}$ collisions using a color glass condensate (CGC) based calculation framework. As past calculations have shown that…

High Energy Physics - Phenomenology · Physics 2026-02-02 Heikki Mäntysaari , Hendrik Roch , 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

We study exclusive vector meson production in ultra-peripheral collisions (UPCs) of a wide range of nuclei, and assess the potential of measurements to constrain the small-$x$ structure of oxygen and neon nuclei. We employ an…

High Energy Physics - Phenomenology · Physics 2026-05-04 Heikki Mäntysaari , Hendrik Roch , Björn Schenke , Chun Shen , Wenbin Zhao

We study the production of $J/\psi$ vector mesons as a function of charged hadron multiplicity in p+p and p+Pb collisions at LHC energies. We employ the color glass condensate framework, using running coupling Balitsky-Kovchegov evolved…

High Energy Physics - Phenomenology · Physics 2022-03-09 Farid Salazar , Björn Schenke , Alba Soto-Ontoso

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 calculate the exclusive $\mathrm{J}/\psi$ photoproduction cross section at high energies from the Color Glass Condensate approach. The results are compared to the center-of-mass energy dependent $\gamma+A\to\mathrm{J}/\psi+A$ cross…

High Energy Physics - Phenomenology · Physics 2024-04-17 Heikki Mäntysaari , Farid Salazar , Björn Schenke

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

The nuclear suppression of forward $J/\psi$ production in high energy proton-nucleus collisions can be used as a probe of gluon saturation at small $x$. In an earlier work we studied this suppression in minimum bias collisions in the Color…

High Energy Physics - Phenomenology · Physics 2016-07-05 B. Ducloué , T. Lappi , H. Mäntysaari

We calculate exclusive vector meson photoproduction within the Color Glass Condensate framework in high-energy photon-nucleus scattering probed experimentally in ultra peripheral heavy ion collisions at RHIC and at the LHC. When the free…

High Energy Physics - Phenomenology · Physics 2024-07-16 Heikki Mäntysaari , Farid Salazar , Björn Schenke , Chun Shen , Wenbin Zhao

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

Forward $J/\psi$ production and suppression in high energy proton-nucleus collisions can be an important probe of gluon saturation. In an earlier work we studied this process in the Color Glass Condensate framework and showed that using the…

High Energy Physics - Phenomenology · Physics 2016-04-20 B. Ducloué , T. Lappi , H. Mäntysaari

The first moment <p_T> of the charged-particle transverse momentum spectrum and its correlation with the charged-particle multiplicity N_{ch} provide vital information about the underlying particle production mechanism. The ALICE…

High Energy Physics - Phenomenology · Physics 2013-11-11 Amir H. Rezaeian

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 the Color Glass Condensate framework,…

High Energy Physics - Phenomenology · Physics 2015-06-10 B. Ducloué , T. Lappi , H. Mäntysaari

According to quantum chromodynamics, at sufficiently high energy, the structure of hadrons reveals a dynamic equilibrium between gluon splitting and gluon recombination -- a phenomenon known as saturation. The process of diffractive…

Nuclear Experiment · Physics 2025-03-25 ALICE Collaboration

Using Bayesian inference, we determine probabilistic constraints on the parameters describing the fluctuating structure of protons at high energy. We employ the color glass condensate framework supplemented with a model for the spatial…

High Energy Physics - Phenomenology · Physics 2022-08-03 Heikki Mäntysaari , Björn Schenke , Chun Shen , Wenbin Zhao

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

In this work the rapidity and transverse momentum dependence of the nuclear modification ratio is evaluated for the dilepton production at RHIC and LHC, using the Color Glass Condensate (CGC) framework. The ratio is compared for two…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. A. Betemps , M. B. Gay Ducati

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 consider the J/Psi production in proton (deuteron) -- nucleus collisions at high energies. We argue that the production mechanism in this case is different from that in pp collisions due to gluon saturation in the nucleus and formation…

High Energy Physics - Phenomenology · Physics 2008-11-26 Dmitri Kharzeev , Kirill Tuchin

We determine the likelihood distribution for the model parameters describing the event-by-event fluctuating proton geometry at small $x$ by performing a Bayesian analysis within the Color Glass Condensate framework. The exclusive…

High Energy Physics - Phenomenology · Physics 2022-08-02 Heikki Mäntysaari , Björn Schenke , Chun Shen , Wenbin Zhao
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