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Charmonium directed flows are studied based on transport model coupled with the realistic three dimensional expansions of the bulk medium. The non-central symmetric nucleus-nucleus collisions can generate the rotating quark-gluon plasma…

Nuclear Theory · Physics 2020-02-19 Baoyi Chen , Maoxin Hu , Huanyu Zhang , Jiaxing Zhao

We compute two-particle production in p+A collisions and extract azimuthal harmonics, using the dilute-dense formalism in the Color Glass Condensate framework. The multiple scatterings of the partons inside the projectile proton on the…

High Energy Physics - Phenomenology · Physics 2018-08-30 Manyika Kabuswa Davy , Cyrille Marquet , Yu Shi , Bo-Wen Xiao , Cheng Zhang

It is proposed to identify a strong electric field - created during relativistic collisions of asymmetric nuclei - via the observation of pseudorapidity and transverse momentum distributions of hadrons with the same mass but opposite…

Nuclear Theory · Physics 2017-04-05 V. D. Toneev , V. Voronyuk , E. E. Kolomeitsev , W. Cassing

The gauge-links connecting the parton field operators in the hadronic matrix elements appearing in the transverse momentum dependent distribution functions give rise to T-odd effects. Due to the process-dependence of the gauge-links the…

High Energy Physics - Phenomenology · Physics 2010-10-27 C. J. Bomhof , P. J. Mulders

We study the properties of the cross section for two-gluon production in heavy-light ion collisions derived in our previous paper on the subject in the saturation/Color Glass Condensate framework. Concentrating on the energy and geometry…

High Energy Physics - Phenomenology · Physics 2015-06-17 Yuri V. Kovchegov , Douglas E. Wertepny

We compute exclusive $\eta_c$ production in high energy electron-nucleon and electron-nucleus collisions that is sensitive to the Odderon. In perturbative QCD the Odderon is a $C$-odd color singlet consisting of at least three $t$-channel…

High Energy Physics - Phenomenology · Physics 2023-10-17 Sanjin Benić , Davor Horvatić , Abhiram Kaushik , Eric Andreas Vivoda

We examine the origins of azimuthal correlations observed in high energy proton-nucleus collisions by considering the simple example of the scattering of uncorrelated partons off color fields in a large nucleus. We demonstrate how the…

High Energy Physics - Phenomenology · Physics 2016-01-19 T. Lappi , B. Schenke , S. Schlichting , R. Venugopalan

Gluon TMDs can be accessed through the analysis of azimuthal asymmetries for heavy quark pair and dijet production in electron-proton collisions, similarly to the way quark TMDs are commonly extracted from semi-inclusive deep-inelastic…

High Energy Physics - Phenomenology · Physics 2016-12-21 Cristian Pisano , Daniël Boer , Piet J. Mulders , Jian Zhou

We compute multi-gluon production in the Color Glass Condensate approach in dilute-dense collisions, p$A$, extending previous calculations up to four gluons. We include the contributions that are leading in the overlap area of the collision…

High Energy Physics - Phenomenology · Physics 2022-11-10 Pedro Agostini , Tolga Altinoluk , Néstor Armesto

We consider double $gg\rightarrow g$ production in the presence of a bias on the unintegrated gluon distribution of the colliding hadron or nuclei. Such bias could be due to the selection of configurations with a greater number of gluons or…

High Energy Physics - Phenomenology · Physics 2020-03-04 Gary Kapilevich

We investigate the leading twist generalized transverse momentum dependent parton distributions (GTMDs) of the unpolarized and longitudinally polarized gluons in the nucleon. We adopt a light-front gluon-triquark model for the nucleon…

High Energy Physics - Phenomenology · Physics 2024-02-28 Chentao Tan , Zhun Lu

In this paper we propose to thoroughly investigate asymmetric nuclear collisions both in the fixed target mode at the laboratory energy below 5 GeV per nucleon and in the collider mode with a center of mass energy below 11 GeV per nucleon.…

Nuclear Theory · Physics 2011-06-21 M. Bleicher , K. A. Bugaev , P. Rau , A. S. Sorin , J. Steinheimer , H. Stoecker

We demonstrate that the longitudinal single target-spin asymmetry in exclusive $\pi^0$ production in $ep$ collisions can give access to the imaginary part of the gluon generalized transverse momentum distribution (GTMD) $F_{1,4}$. Such a…

High Energy Physics - Phenomenology · Physics 2024-05-21 Shohini Bhattacharya , Duxin Zheng , Jian Zhou

The directed flow of identified hadrons is studied within the parton-hadron-string-dynamics (PHSD) approach for the asymmetric system Cu+Au in non-central collisions at $\sqrt{s_{NN}}$ = 200 GeV. It is emphasized that due to the difference…

Nuclear Theory · Physics 2014-12-11 V. Voronyuk , V. D. Toneev , S. A. Voloshin , W. Cassing

We present preliminary results on the leading-twist transverse-momentum-dependent (TMD) gluon linearity function, which is directly connected to nucleon transverse-spin asymmetries originating from the density of linearly-polarized gluons.…

High Energy Physics - Phenomenology · Physics 2022-03-11 Alessandro Bacchetta , Francesco Giovanni Celiberto , Marco Radici

We use a diagrammatic approach to study color-neutral heavy particle production in nucleus-nucleus collisions in a quasi-classical approximation without small-$x$ evolution. In order to treat the two nuclei symmetrically, we use the Coulomb…

High Energy Physics - Phenomenology · Physics 2012-12-07 Tseh Liou

Using the Colour Glass Condensate description of electron-nucleus collisions at high energy, we study the diffractive production of a pair of jets with transverse momenta much larger than the nuclear saturation momentum $Q_s$. At leading…

High Energy Physics - Phenomenology · Physics 2025-12-15 E. Iancu , D. N. Triantafyllopoulos , S. Y. Wei , F. Yuan

It was recently shown that fluctuations in the initial geometry of a heavy ion collision generally result in a dipole asymmetry of the distribution of outgoing particles. This asymmetry, unlike the usual directed flow, is expected to be…

Nuclear Experiment · Physics 2015-03-17 Matthew Luzum , Jean-Yves Ollitrault

We study for the first time the transverse momentum transfer distributions $d\sigma/dt$ in coherent production of charmonia in nuclear ultra-peripheral and electron-ion collisions within the QCD color dipole approach based on a rigorous…

High Energy Physics - Phenomenology · Physics 2025-11-06 J. Nemchik , J. Óbertová

Semi-inclusive $J/\psi$ production in electron-proton collisions is a promising process to study gluon transverse momentum distributions (TMDs) at the future Electron-Ion Collider. In this article, we improve on previous studies of the…

High Energy Physics - Phenomenology · Physics 2022-08-15 Jelle Bor , Daniël Boer