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We present a new model for the description of heavy-quark hadronization in relativistic heavy-ion collisions in the presence of a reservoir of lighter thermal particles with which recombination can occur leading to the formation of…

High Energy Physics - Phenomenology · Physics 2022-07-27 Andrea Beraudo , Arturo De Pace , Marco Monteno , Marzia Nardi , Francesco Prino

Classical color fields produced by the small-x wave functions of colliding ultrarelativistic nuclei have been numerically computed. We set up the framework for computing the production of small-mass quark-antiquark pairs in these color…

High Energy Physics - Phenomenology · Physics 2007-05-23 F. Gelis , K. Kajantie , T. Lappi

We discuss diffractive dissociation of gluons into heavy quark pairs. The particular mechanism is similar to the diffractive dissociation of virtual photons into quarks, which drives diffractive deep inelastic production of charm in the…

High Energy Physics - Phenomenology · Physics 2015-06-16 Marta Luszczak , Wolfgang Schafer , Antoni Szczurek

Within the framework of NRQCD, the photoproduction of doubly heavy baryons $\Xi_{cc}$, $\Xi_{bc}$, $\Xi_{bb}$ and their $P$-wave excited states has been systematically investigated. The production mechanism is that a color anti-triplet or…

High Energy Physics - Phenomenology · Physics 2025-01-28 Hong-Hao Ma , Juan-Juan Niu , Lei Guo

I discuss mechanisms of heavy quark production in (real) photon-nucleon and (real) photon - (real) photon collisions. In particular, I focuse on application of the Saturation Model. In addition to the main dipole-nucleon or dipole-dipole…

High Energy Physics - Phenomenology · Physics 2011-01-25 A. Szczurek

We compute the differential cross section for inclusive $\mathrm{D}^0$ production in ultraperipheral collisions within the Color Glass Condensate framework. Our predictions are found to be in relatively good agreement with the CMS data at…

High Energy Physics - Phenomenology · Physics 2025-06-06 Patricia Gimeno-Estivill , Tuomas Lappi , Heikki Mäntysaari

We compute by numerical integration of the Dirac equation the number of quark-antiquark pairs produced in the classical color fields of colliding ultrarelativistic nuclei. The backreaction of the created pairs on the color fields is not…

High Energy Physics - Phenomenology · Physics 2016-09-06 F. Gelis , K. Kajantie , T. Lappi

A future high-energy electron-ion collider would explore the non-linear weakly-coupled regime of QCD, and test the Color Glass Condensate (CGC) approach to high-energy scattering. Hard diffraction in deep inelastic scattering off nuclei…

High Energy Physics - Phenomenology · Physics 2008-06-02 C. Marquet , H. Kowalski , T. Lappi , R. Venugopalan

A supersymmetric composite model of color superconductivity is proposed. Quarks and diquarks are dynamically generated as composite fields by a newly introduced strong gauge dynamics. It is shown that the condensation of the scalar…

High Energy Physics - Phenomenology · Physics 2009-11-10 Nobuhito Maru , Motoi Tachibana

We study the production of heavy quarkonium in association with an additional heavy pair. We argue that important contributions may come from phase space regions where three heavy fermions are separated by relative velocities much lower…

High Energy Physics - Phenomenology · Physics 2008-11-26 Gouranga C. Nayak , Jian-Wei Qiu , George Sterman

The diffusion coefficients of heavy quarks from the coherent color electromagnetic fields which are generated in the early stage of relativistic heavy-ion collisions are calculated at midrapidity, and compared with those obtained from…

Nuclear Theory · Physics 2015-12-18 Taesoo Song , Thomas Epelbaum

Within the Color Glass Condensate framework, we demonstrate that exclusive vector meson production at high energy is sensitive to the geometric deformation of the target nucleus and subnucleon scale fluctuations. Deformation of the nucleus…

Nuclear Theory · Physics 2023-12-13 Heikki Mäntysaari , Farid Salazar , Björn Schenke , Chun Shen , Wenbin Zhao

We compute the differential cross section for direct quarkonium production in high-energy electron-nucleus collisions at small $x$. Our computation is performed within the nonrelativistic QCD factorization formalism that separates the…

High Energy Physics - Phenomenology · Physics 2024-09-09 Vincent Cheung , Zhong-Bo Kang , Farid Salazar , Ramona Vogt

We discuss production of charmed mesons and J/Psi in p(d)A collisions at high energies. We argue that when the saturation scale Qs characterizing the parton density in a nucleus exceeds the quark mass m, the naive perturbation theory breaks…

High Energy Physics - Phenomenology · Physics 2009-01-07 Kirill Tuchin

We discuss diffractive dissociation of gluons into heavy quark pairs. The particular mechanism is similar to the diffractive dissociation of virtual photons into quarks. The amplitude for the $g p \to Q \bar Q p$ is derived in the impact…

High Energy Physics - Phenomenology · Physics 2013-07-01 Antoni Szczurek , Marta Luszczak , Wolfgang Schafer

The description of the hadron production at very forward rapidities and low transverse momentum is usually made using phenomenological models based on nonperturbative physics. However, at high energies and large rapidities the wave function…

High Energy Physics - Phenomenology · Physics 2013-07-08 V. P. Goncalves , M. L. L. da Silva

We compute the rate for diffractive $\phi$ electro-production using the Color Glass Condensate dipole model. The model parameters are obtained from fits to the most recent combined HERA data on inclusive deep inelastic scattering. As for…

High Energy Physics - Phenomenology · Physics 2017-03-07 Mohammad Ahmady , Ruben Sandapen , Neetika Sharma

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

We discuss proton-nucleus collisions in the framework of the color glass condensate. By assuming that the proton can be described as a low density color source, we solve exactly the Yang-Mills equations corresponding to this type of…

High Energy Physics - Phenomenology · Physics 2017-08-23 J. -P. Blaizot , F. Gelis , R. Venugopalan

We study the diffractive jet production in electron-ion collisions in the kinematical region where the mass $M_X$ of the diffractive final state is larger than $Q^2$. Based on parton saturation framework predictions are done for the…

High Energy Physics - Phenomenology · Physics 2020-09-16 G. M. Peccini , L. S. Moriggi , M. V. T. Machado