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The formation of hadrons is a fundamental process in nature that can be investigated at particle colliders. As several recent findings demonstrate, with $\mathrm{e^+e^-}$ collisions as a "vacuum-like" reference at one extreme, and central…

High Energy Physics - Phenomenology · Physics 2025-01-13 J. Altmann , A. Dubla , V. Greco , A. Rossi , P. Skands

We review direct photons in the phenomenology of nuclear collisions at relativistic energies. Direct photons carry information about the space-time evolution of nuclear collisions because the QCD medium is transparent against colorless…

Nuclear Theory · Physics 2022-06-29 Akihiko Monnai

With the explosion of data on jet based observables in relativistic heavy-ion collisions at the Large Hadron Collider and the Relativistic Heavy-Ion Collider, perturbative QCD based simulations of these processes, often interacting with an…

High Energy Physics - Phenomenology · Physics 2024-01-19 Shanshan Cao , Abhijit Majumder , Rouzbeh Modarresi-Yazdi , Ismail Soudi , Yasuki Tachibana

In high-energy heavy-ion collisions, a nearly perfect fluid is formed, known as the strongly coupled quark-gluon plasma (QGP). After a short thermalization period, the evolution of this medium can be described by the equations of…

High Energy Physics - Phenomenology · Physics 2026-04-10 Gábor László Kasza

Opportunities for searches for phenomena beyond the Standard Model (BSM) using heavy-ions beams at high energies are outlined. Different BSM searches proposed in the last years in collisions of heavy ions, mostly at the Large Hadron…

Relativistic heavy-ion collisions suggest that low momentum regions of the observed particle spectra are thermal and hydrodynamic, while medium-high momentum regions are non-thermal and perturbative. In this study, I construct a…

Nuclear Theory · Physics 2023-08-09 Akihiko Monnai

A brief survey is given on the current status of evaluating thermal production of photons from a strongly interacting medium. Emphasis is put on recent progress in assessing equilibrium emission rates in both hadronic and quark-gluon…

Nuclear Theory · Physics 2009-11-10 Ralf Rapp

Large-distance ultraperipheral collisions of two relativistic ions are considered. The clouds of photons surrounding the ions are responsible for their distant electromagnetic interaction. The perturbative approach and the method of…

High Energy Physics - Phenomenology · Physics 2020-04-01 I. M. Dremin

The evolution of a relativistic heavy-ion collision is typically understood as a process that transmutes the initial geometry of the system into the final momentum distribution of observed hadrons, which can be described via a cumulant…

Nuclear Theory · Physics 2021-02-03 Jefferson Sousa , Jorge Noronha , Matthew Luzum

Quantum Chromodynamics is the most successful theory in particle physics. The understanding of all different signals at hadron colliders have been achieved due to the correct interpretation of the theory. In this paper we review some basic…

High Energy Physics - Phenomenology · Physics 2014-10-27 R. J. Hernández-Pinto

Contribution of a preshower photon multiplicity detector to the physics of ultra-relativistic nuclear collisions is reviewed and future possibilities at RHIC and LHC are discussed

Nuclear Experiment · Physics 2015-06-26 Yogendra Pathak Viyogi

Motivated by recent developments in the field of plasmonics, we develop the theory of radiation from one-dimensional electron liquids, showing that the spectrum of thermal radiation emitted from the system exhibits signatures of non-Fermi…

Strongly Correlated Electrons · Physics 2019-06-19 Wade DeGottardi , Michael J. Gullans , Suraj Hedge , Smitha Vishveshwara , Mohammad Hafezi

The features of electromagnetic field of relativistic electrons passing through a hole in an absorbing screen as a function of the distance from the screen in range of radiation formation length were investigated. The analysis of obtained…

Accelerator Physics · Physics 2010-06-15 G. A. Naumenko , A. P. Potylitsyn , L. G. Sukhikh , Yu. A. Popov

The hot QCD matter produced in any heavy ion collision with a nonzero impact parameter is produced within a strong magnetic field. We study the imprint that these fields leave on the azimuthal distributions and correlations of the produced…

High Energy Physics - Phenomenology · Physics 2014-05-21 Umut Gursoy , Dmitri Kharzeev , Krishna Rajagopal

Ultraperipheral collisions at collider energies are a useful tool to study photon-hadron (proton/nucleus) and photon-photon interactions in a hitherto unexplored energy regime. Theoretical tools to study these processes are briefly…

High Energy Physics - Phenomenology · Physics 2008-12-18 G. Baur

Using the strong electromagnetic fields in peripheral heavy ion collisions gives rise to a number of interesting possibilities of applications in both photon-photon and photon-hadron physics. We look at the theoretical foundations of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Kai Hencken

We present an overview of the scientific opportunities that would be offered by a high-energy electron-ion collider. We discuss the relevant physics of polarized and unpolarized electron-proton collisions and of electron-nucleus collisions.…

High Energy Physics - Phenomenology · Physics 2009-11-11 Abhay Deshpande , Richard Milner , Raju Venugopalan , Werner Vogelsang

Electromagnetism becomes a nonlinear theory having (effective) photon-photon interactions due at least to electron-positron fluctuations in the vacuum. We discuss the consequences of the nonlinearity for the force felt by a charge probe…

High Energy Astrophysical Phenomena · Physics 2013-03-20 Lance Labun , Jan Rafelski

In heavy-ion collisions at relativistic energies, the incident nuclei travel at nearly the speed of light. These collisions deposit kinetic energy into the overlap region and create a high-temperature environment where hadrons ``melt'' into…

Nuclear Experiment · Physics 2025-12-02 Diyu Shen , Jinhui Chen , Xu-Guang Huang , Yu-Gang Ma , Aihong Tang , Gang Wang

Thermal radiation of photons and dileptons from hadronic matter plays an essential role in understanding electromagnetic emission spectra in high-energy heavy-ion collisions. In particular, baryons and anti-baryons have been found to be…

High Energy Physics - Phenomenology · Physics 2020-12-30 Nathan P. M. Holt , Ralf Rapp