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Due to the coherence of all the protons in a nucleus, there are very strong electromagnetic fields of short duration in relativistic heavy ion collisions. They give rise to quasireal photon-photon and photon-nucleus collisions with a large…

High Energy Physics - Phenomenology · Physics 2016-09-06 K. Hencken , P. Stagnoli , D. Trautmann , G. Baur

The process of elastic scattering of photons (scattering of light by light) has attracted much attention in recent years. It goes through a loop where all the charged particles contribute to the cross section. To date, this $\gamma\gamma…

High Energy Physics - Phenomenology · Physics 2025-12-02 K. I. Beloborodov , T. A. Kharlamova , V. I. Telnov

The $ZZ$ pair production rate in high energy $\gamma \gamma$ collisions is evaluated with photons from laser backscattering. We find that searching for the Standard Model Higgs boson with a mass up to, or slightly larger than, 400 GeV via…

High Energy Physics - Phenomenology · Physics 2009-10-22 Duane A. Dicus , Chung Kao

A possibility to measure the energy and polarization distributions of high intensity gamma-beams is considered. This possibility is based on measurements of the number of electron-pozitron pairs in such media as laser waves and single…

High Energy Physics - Experiment · Physics 2008-11-26 V. A. Maisheev

We present a numerical estimate of the $\gamma^* \gamma^*$ total cross section at LEP and at the designed $e^+e^-$ Next Linear Collider (NLC), based upon the BFKL Pomeron. We find for the linear collider that the event rate is substantial…

High Energy Physics - Phenomenology · Physics 2009-10-28 J. Bartels , A. DeRoeck , H. Lotter

Experimental prospects for studying high-energy photon-photon and photon-proton interactions at the CERN Large Hadron Collider (LHC) are discussed. Cross sections are calculated for many electroweak and beyond the Standard Model processes.…

High Energy Physics - Phenomenology · Physics 2009-08-21 J. de Favereau de Jeneret , V. Lemaitre , Y. Liu , S. Ovyn , T. Pierzchala , K. Piotrzkowski , X. Rouby , N. Schul , M. Vander Donckt

In this report I surveyed physics potential of the gamma-gamma option of a Linear e+e- Collider with the following questions in mind: What new discovery can be expected at a gamma-gamma collider in addition to what will be learned at its…

High Energy Physics - Phenomenology · Physics 2008-11-26 Kaoru Hagiwara

Under certain running conditions, the CERN Large Hadron Collider (LHC) can be considered as a photon-photon collider. Indeed, in proton-proton, proton-ion, ion-ion collisions, when incoming particles pass very close to each other in very…

High Energy Physics - Phenomenology · Physics 2021-07-28 L. Schoeffel , C. Baldenegro , H. Hamdaoui , S. Hassani , C. Royon , M. Saimpert

Real photon-photon scattering is a long-predicted phenomenon that is being searched for in experiment in the form of a birefringent vacuum at optical and X-ray frequencies. We present results of calculations and numerical simulations for a…

High Energy Physics - Phenomenology · Physics 2016-12-07 B. King , N. Elkina

The strong electromagnetic fields in peripheral heavy ion collisions give rise to photon-photon and photon-nucleus interactions. I present a general survey of the photon-photon and photon-hadron physics accessible in these collisions. Among…

Nuclear Theory · Physics 2014-11-18 Carlos A. Bertulani

A significant fraction of pp collisions at the LHC will involve (quasi-real) photon interactions occurring at energies well beyond the electroweak energy scale. Hence, the LHC can to some extend be considered as a high-energy photon-photon…

High Energy Physics - Phenomenology · Physics 2008-12-18 K. Piotrzkowski

In this work, $\gamma^{(\ast)}\gamma^{(\ast)}$ interactions in electron-positron collisions are studied across both low- and high-energy regimes. The analysis includes contributions from the Vector Meson Dominance (VMD) model (via Reggeon…

High Energy Physics - Phenomenology · Physics 2025-09-01 G. Zardo Becker

We analyze the real-time electron-photon dynamics in long-range polariton-mediated energy transfer using a real-time quantum electrodynamics coupled cluster (RT-QED-CC) model, which allows for spatial and temporal visualization of transport…

Chemical Physics · Physics 2024-04-16 Matteo Castagnola , Marcus T. Lexander , Enrico Ronca , Henrik Koch

We will summarize some aspects of the standard model Higgs boson at high energy $\gamma\gamma$ colliders, where the photon beams are realized by the laser backscattering method, including the direct Higgs boson production via…

High Energy Physics - Phenomenology · Physics 2007-05-23 kingman Cheung

It is well known that at linear e^+e^-(e^-e^-) colliders using laser backscattering one can obtain colliding gamma-gamma, gamma-electron beams with energy and luminosity comparable to those in e^+e^- collisions. In this paper, it is…

High Energy Physics - Experiment · Physics 2016-08-31 Valery Telnov

High-energy virtual photon-virtual photon scattering can be viewed as interaction of small size color dipoles from the beam and target photons, which makes $\gamma^{*}\gamma^{*}, \gamma^{*}\gamma$ scattering at high energies (LEP, LEP200 &…

High Energy Physics - Phenomenology · Physics 2011-09-13 N. N. Nikolaev , J. Speth , V. R. Zoller

The theoretical and experimental aspects of particle production from the strong equivalent photon fluxes present at high energy hadron colliders are reviewed. The goal is to show how photons at hadron colliders can improve what we have…

High Energy Physics - Phenomenology · Physics 2010-01-27 Joakim Nystrand

The contribution of the QCD pomeron to the processes: e+e- to e+e- J/psi J/psi and e+ e- to e+ e- hadrons (with tagged electrons) is discussed. We focus on reactions which occur via photon-photon collisions, with virtual photons coming from…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. Kwiecinski , L. Motyka

Due to coherence, there are strong electromagnetic fields of short duration in very peripheral collisions. They give rise to photon-photon and photon-nucleus collisions with a high flux up to an invariant mass region hitherto unexplored…

High Energy Physics - Phenomenology · Physics 2008-11-26 Gerhard Baur , Kai Hencken , Dirk Trautmann , Serguei Sadovsky , Yuri Kharlov

The next generation of $e^+e^-$-colliders will offer a possibility of clean testing of QCD dynamics in the Regge limit. Recent progress in the theoretical description of exclusive processes permits for many of them a consistent use of the…

High Energy Physics - Phenomenology · Physics 2016-09-06 B. Pire , L. Szymanowski , S. Wallon