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The cross sections for exclusive muon pair production in nucleus - nucleus collisions are calculated and several differential distributions are shown. Realistic (Fourier transform of charge density) charge form factors of nuclei are used…

Nuclear Theory · Physics 2011-04-04 Mariola Klusek-Gawenda , Antoni Szczurek

This thesis presents a measurement of the cross-section of the purely electromagnetic production of $e^+e^-$ pairs accompanied by mutual nuclear Coulomb excitation $AuAu\to Au^*Au^*+e^+e^-$, in ultra-peripheral gold-gold collisions at RHIC…

Nuclear Experiment · Physics 2009-09-29 Vladimir Borisovitch Morozov

This work studies the production of direct photons in relativistic nuclear collisions, along with the production of hadrons. Radiation from the very first instants to the final moments of the evolution is included. The hybrid model used…

Nuclear Theory · Physics 2022-02-01 Charles Gale , Jean-François Paquet , Björn Schenke , Chun Shen

In recent years, a large number of papers have appeared that dealt with $\EPEM$ pair production in heavy ion collisions at high energies. To a large extent these studies were motivated by the existence of relativistic heavy ion accelerators…

Nuclear Theory · Physics 2008-11-26 Gerhard Baur , Kai Hencken , Dirk Trautmann

By using a Regge-pole model for vector meson production (VMP), that successfully describes the HERA data, we analyze the connection of VMP cross sections in photon-induced reactions at HERA with those in ultra-peripheral collisions at the…

High Energy Physics - Phenomenology · Physics 2015-06-08 R. Fiore , L. Jenkovszky , V. Libov , M. V. T. Machado , A. Salii

Pioneering experiments on production of hypernuclei can be performed with nuclotron beams on fixed targets, and at the future NICA facility. The peripheral collisions of relativistic ions are very promising for searching mutli-strange and…

Nuclear Theory · Physics 2013-05-24 A. S. Botvina

Vector meson photoproduction at high energies has attracted increased interest in recent years due to the unique kinematical ranges offered by the LHC experiments. The ALICE and LHCb collaborations have provided measurements of vector meson…

High Energy Physics - Experiment · Physics 2021-09-08 Simone Ragoni

We estimate the cross sections for the production of resonances, pion pairs and a central cluster of hadrons in peripheral heavy-ion collisions through two-photon and double-pomeron exchange, at energies that will be available at RHIC and…

Nuclear Theory · Physics 2009-11-06 C. G. Roldao , A. A. Natale

By using a Regge-pole model for vector meson production (VMP), successfully describing the HERA data, we analyse the correlation between VMP cross sections in photon-induced reactions at HERA and those in ultra-peripheral collisions at the…

High Energy Physics - Phenomenology · Physics 2022-01-25 Laszlo Jenkovszky , Vladyslav Libov , Magno V. T. Machado

Hypernuclei are bound states of nuclei with one or more hyperons. Precise measurements of hypernuclei properties and their production yields in heavy ion collisions are crucial for the understanding of their production mechanisms. The…

Nuclear Experiment · Physics 2026-05-05 Yuanjing Ji

Using the QCD color dipole picture to study exclusive vector meson and inclusive jet/open meson photoproduction, we calculate the ratio of elastic meson production to inclusive hadron production cross sections for ultraperipheral heavy ion…

High Energy Physics - Phenomenology · Physics 2026-05-15 Joao Vitor C. Lovato , Edgar Huayra , Magno V. T. Machado

In relativistic heavy ion collisions, top quarks can be produced by photon-gluon fusion when a photon from the Weizs\"acker-Williams virtual photon field of one nucleus interacts with a gluon in the other nucleus. Photoproduction with heavy…

High Energy Physics - Phenomenology · Physics 2009-01-07 Spencer R. Klein , Joakim Nystrand , Ramona Vogt

As predicted by theory and confirmed by measurements, one, two or three neutrons are emitted frequently in ultraperipheral collisions (UPCs) of heavy relativistic nuclei, in particular, $^{208}$Pb. The exchange of low-energy…

Nuclear Theory · Physics 2023-08-29 U. A. Dmitrieva , I. A. Pshenichnov

A significant excess of J/$\psi$ yield at very low transverse momentum ($p_T < 0.3$ GeV/c) was observed by the ALICE and STAR collaborations in peripheral A+A collisions, which points to evidence of coherent photoproduction of J/$\psi$ in…

Nuclear Theory · Physics 2018-05-02 W. Zha , S. R. Klein , R. Ma , L. Ruan , T. Todoroki , Z. Tang , Z. Xu , C. Yang , Q. Yang , S. Yang

Deep Inelastic Scattering (DIS) experiments at the planned Electron-Ion Collider will be affected by details of the hadron formation inside the nuclear volume. Besides semi-inclusive particle production experiments decays of the target…

High Energy Physics - Phenomenology · Physics 2020-01-29 A. B. Larionov , M. Strikman

We present an updated theoretical treatment of ultraperipheral collisions (UPCs) of heavy ions, within the SuperChic Monte Carlo generator. This in particular accounts for mutual ion excitation through additional photon exchanges between…

High Energy Physics - Phenomenology · Physics 2024-07-08 L. A. Harland-Lang

In a previous publication, we have presented a model for the photoproduction of $\mathrm{J/}\psi$ vector mesons off protons, where the proton structure in the impact-parameter plane is described by an energy-dependent hot-spot profile. Here…

High Energy Physics - Phenomenology · Physics 2018-02-28 Jan Cepila , Jesus Guillermo Contreras , Michal Krelina

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

The photon-photon interaction in ultra-relativistic heavy-ion collision is a source of the $(e^+,e^-)$ pairs. The photon-photon fusion leads the lepton creation in the broad configuration space around "collision" point. Those created close…

Nuclear Theory · Physics 2022-12-28 Katarzyna Mazurek , Mariola Kłusek-Gawenda , Antoni Szczurek

In this paper we study leading neutron production in photon - hadron interactions which take place in $pp$ and $pA$ collisions at large impact parameters. Using a model that describes the recent leading neutron data at HERA, we consider…

High Energy Physics - Phenomenology · Physics 2016-08-03 V. P. Goncalves , B. D. Moreira , F. S. Navarra , D. Spiering