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The Quark Gluon Plasma (QGP) produced in ultra relativistic heavy-ion collisions at the Large Hadron Collider (LHC) can be studied by measuring the modifications of jets formed by hard scattered partons which interact with the medium. We…

Nuclear Experiment · Physics 2020-07-01 ALICE Collaboration

The $J/\psi+Z^0$ associated production at the LHC is an important process in investigating the color-octet mechanism of non-relativistic QCD in describing the processes involving heavy quarkonium. We calculate the next-to-leading order…

High Energy Physics - Phenomenology · Physics 2012-11-20 Song Mao , Ma Wen-Gan , Li Gang , Zhang Ren-You , Guo Lei

Jet quenching has long been regarded as one of the key signatures for the formation of quark-gluon plasma in heavy-ion collisions. Despite significant efforts, the separate identification of quark and gluon jet quenching has remained as a…

High Energy Physics - Phenomenology · Physics 2023-10-19 Shan-Liang Zhang , Jinfeng Liao , Guang-You Qin , Enke Wang , Hongxi Xing

In the article, the study of unpolarized $J/\psi$ production in proton-proton collisions is presented. The Soft Gluon Resummation approach as a TMD framework was used for description of small-$p_T^{}$ production cross section. The Improved…

High Energy Physics - Phenomenology · Physics 2025-11-19 Vladimir Saleev , Kirill Shilyaev

We discuss coherent and incoherent photoproduction of $J/\Psi$ vector mesons in high energy heavy ion collisions. In a dipole picture for the photon both can be naturally related to the dipole cross section that is also probed in inclusive…

High Energy Physics - Phenomenology · Physics 2013-10-25 T. Lappi , H. Mäntysaari

We study the azimuthal asymmetries for the distributions of leading pions inside a jet produced inclusively in high-energy proton-proton collisions within the framework of the transverse momentum dependent generalized parton model. We…

High Energy Physics - Phenomenology · Physics 2015-06-23 Cristian Pisano , Umberto D'Alesio , Francesco Murgia

Jet substructure is a powerful tool to probe the time evolution of a parton shower. However, many of the analysis methods used to extract splitting formation times from jet substructure, such as Soft Drop grooming and the Lund plane, focus…

High Energy Physics - Experiment · Physics 2023-09-13 Andrew Tamis

The prompt $J/\psi$ photoproduction within the non-relativistic QCD (NRQCD) framework at the future Circular Electron Positron Collider (CEPC) is studied, including the contributions from both direct and resolved photons. Employing…

High Energy Physics - Phenomenology · Physics 2021-02-03 Xi-Jie Zhan , Jian-Xiong Wang

In this paper, we discuss the prompt j/psi production at e^+e^- colliders via color-singlet and color-octet production mechanisms. The color-singlet production processes include 1) e^+e^- to J/\psi gg; 2) e^+e^- to J/\psi c\bar{c}; 3)…

High Energy Physics - Phenomenology · Physics 2009-10-30 Feng Yuan , Cong-Feng Qiao , Kuang-Ta Chao

We report the first evidence of spin interference in exclusive $J/\psi \to e^+e^-$ photoproduction in ultraperipheral Au+Au and isobar (Ru+Ru, Zr+Zr) collisions ($\sqrt{s_{NN}} = 200$~GeV) at STAR. A negative $\cos(2\phi)$ modulation is…

Nuclear Experiment · Physics 2025-12-03 The STAR Collaboration

We present a detailed phenomenological study of polarized inclusive jet production in electron-proton collisions at a future Electron-Ion Collider (EIC). Our analysis is performed at next-to-leading order in perturbative QCD using the…

High Energy Physics - Phenomenology · Physics 2018-10-03 Radja Boughezal , Frank Petriello , Hongxi Xing

Soft photons produced in heavy ion collisions are an important tool for probing the properties of the quark-gluon plasma. It is therefore crucial to understand the background - soft photons produced in elementary collisions. Low theorem…

High Energy Physics - Phenomenology · Physics 2015-06-22 Frasher Loshaj , Dmitri E. Kharzeev

One of the more promising observables to probe the high energy regime of the QCD dynamics in the future Electron-Ion Colliders (EIC) is the exclusive vector meson production cross section in coherent and incoherent interactions. Such…

High Energy Physics - Phenomenology · Physics 2019-06-24 M. Krelina , V. P. Goncalves , J. Cepila

We investigate angular and energy distributions of medium-induced gluon emission off a quark-antiquark antenna in the framework of perturbative QCD as an attempt toward understanding, from first principles, jet evolution inside the…

High Energy Physics - Phenomenology · Physics 2011-04-05 Yacine Mehtar-Tani , Carlos A. Salgado , Konrad Tywoniuk

We use the color-octet mechanism combined with the two gluon exchange model for the diffractive $J/\psi$ production in resolved photon processes. In the leading logarithmic approximation in QCD, we find that the diffractive $J/\psi$…

High Energy Physics - Phenomenology · Physics 2011-03-23 Jia-Sheng Xu , Hong-An Peng

We evaluate the production cross section for direct J/psi integrated in P_T for various collision energies of the LHC in the QCD-based Colour-Singlet Model. We consider the LO contribution from gluon fusion as well as the one from a fusion…

High Energy Physics - Phenomenology · Physics 2010-06-15 J. P. Lansberg

The strong electromagnetic fields of short duration associated with relativistic heavy ions make a heavy-ion collider a unique tool to study two-photon and photonuclear collisions. In this talk, we introduce the principles of…

Nuclear Experiment · Physics 2019-08-13 Yury Gorbunov

We compute the differential yield for quark anti-quark dijet production in high-energy electron-proton and electron-nucleus collisions at small $x$ as a function of the relative momentum $\boldsymbol{P}_\perp$ and momentum imbalance…

High Energy Physics - Phenomenology · Physics 2022-09-20 Renaud Boussarie , Heikki Mäntysaari , Farid Salazar , Björn Schenke

By using models based on Regge phenomenology we analyse the coherent photoproduction of charmonium in peripheral heavy-ion collisions at the Large Hadron Collider (LHC). The centrality dependence is investigated and compared to the…

High Energy Physics - Phenomenology · Physics 2022-03-15 Laszlo Jenkovszky , Vladyslav Libov , Magno V. T. Machado

Back-to-back light and heavy flavor dijet measurements are promising experimental channels to accurately study the physics of jet production and propagation in a dense QCD medium. They can provide new insights into the path length, color…

High Energy Physics - Phenomenology · Physics 2019-02-22 Zhong-Bo Kang , Jared Reiten , Ivan Vitev , Boram Yoon