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High energy photons originating from the electromagnetic field of ultrarelativistic lead nuclei can interact with the other lead ion. These reactions are studied in the ultra-peripheral heavy ion collisions to probe the physics of strong…

Nuclear Experiment · Physics 2023-06-27 Abdennacer Hamdi

In relativistic heavy-ion collisions, the strong Lorentz-contracted electromagnetic fields are capable of producing copious numbers of lepton pairs through the two-photon mechanism. Monte Carlo techniques have been developed that allow the…

Nuclear Theory · Physics 2009-09-25 M. C. Guclu , J. C. Wells , A. S. Umar , M. R. Strayer , D. J. Ernst

We study the lepton pair photoproduction in peripheral heavy-ion collisions based on the formalism in our previous work [Phys. Rev. D 104, 056011 (2021)]. We present the numerical results for the distributions of the transverse momentum,…

High Energy Physics - Phenomenology · Physics 2022-09-14 Ren-jie Wang , Shuo Lin , Shi Pu , Yi-fei Zhang , Qun Wang

We use a Glauber-like approach to describe very energetic nucleus-nucleus collisions as a sequence of binary nucleon-nucleon collisions. No free parameters are needed: all the information comes from simple parametrizations of…

Nuclear Theory · Physics 2008-11-26 Sangyong Jeon , Joseph Kapusta

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 physics of peripheral collisions with relativistic heavy ions (PCRHI) is reviewed. One- and two-photon processes are discussed.

Nuclear Theory · Physics 2011-07-19 C. A. Bertulani

We study dilepton, proton-antiproton and diphoton production in ultraperipheral lead-lead collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 and 5.5 TeV. The nuclear calculations are based on equivalent photon approximation in the impact…

High Energy Physics - Phenomenology · Physics 2017-11-01 Mariola Klusek-Gawenda , Antoni Szczurek

Effective photon-photon luminosities are calculated for various realistic hadron collider scenarios. The main characteristics of photon-photon processes at relativistic heavy-ion colliders are established and compared to the corresponding…

Nuclear Theory · Physics 2016-09-08 Kai Hencken , Dirk Trautmann , Gerhard Baur

Effective photon-photon luminosities are calculated for various realistic hadron collider scenarios. The main characteristics of photon-photon processes at relativistic heavy-ion colliders are established and compared to the corresponding…

Nuclear Theory · Physics 2009-10-28 Kai Hencken , Dirk Trautmann , Gerhard Baur

Atomic number ($A$) and energy ($\roots$) scaling exponents of multiplicity and transverse energy in heavy ion collisions are analytically derived in the perturbative QCD + saturation model. The exponents depend on the small-$x$ behaviour…

High Energy Physics - Phenomenology · Physics 2014-11-17 K. J. Eskola , K. Kajantie , K. Tuominen

Dilepton and photon production in heavy-ion collisions at SPS energies are studied in the relativistic transport model that incorporates self-consistently the change of hadron masses in dense matter. It is found that the dilepton spectra in…

Nuclear Theory · Physics 2009-10-30 G. Q. Li , G. E. Brown , C. M. Ko

We show that the phenomenology of isospin effects on heavy ion reactions at intermediate energies (few AGeV range) is extremely rich and can allow a ``direct'' study of the covariant structure of the isovector interaction in the hadron…

Nuclear Theory · Physics 2008-11-26 M. Di Toro , M. Colonna , G. Ferini , T. Gaitanos , V. Greco , H. H. Wolter

We study the spectrum of the bremsstrahlung photons coming from the electrons and positrons, which are produced in the strong electromagnetic fields present in peripheral relativistic heavy ion collisions. We compare different approaches,…

Nuclear Theory · Physics 2009-10-31 Kai Hencken , Dirk Trautmann , Gerhard Baur

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 the presence of an intensive laser field the radiative recombination of the continuum electron into an atomic bound state generally is accompanied by absorption or emission of several laser quanta. The spectrum of emitted photons…

Atomic Physics · Physics 2009-10-31 M. Yu. Kuchiev , V. N. Ostrovsky

We have employed x-ray spectroscopy to probe the charge changing process only in the bulk of the foil when swift heavy ions pass through it. In contrast, the electromagnetic methods take into account integral effect of the charge changing…

Atomic Physics · Physics 2019-05-14 Tapan Nandi , Prashant Sharma , Pravin Kumar

Exclusive hadron production processes in photon-photon collisions provide important tests of QCD at the amplitude level, particularly as measures of hadron distribution amplitudes and skewed parton distributions. The determination of the…

High Energy Physics - Phenomenology · Physics 2009-09-25 S. J. Brodsky

We study the radiation of thermal photons and dileptons likely to be produced in relativistic heavy ion collisions. We find that the thermal photon multiplicity scales with the charged pion multiplicity as $dN_{ch}/dy)^\alpha$ with…

Nuclear Theory · Physics 2016-09-08 Jean Cleymans , Krzysztof Redlich , Dinesh Kumar Srivastava

We investigate the influence of electron-phonon coupling on the superexchange interaction of magnetic insulators. Both the Holstein-Hubbard model where the phonons couple to the electron density, as well as an extended Su, Schrieffer,…

Condensed Matter · Physics 2009-10-28 W. Stephan , M. Capone , M. Grilli , C. Castellani

We use an event-by-event hydrodynamical description of the heavy-ion collision process with Glauber initial conditions to calculate the thermal emission of photons. The photon rates in the hadronic phase follow from a spectral function…

Nuclear Theory · Physics 2017-07-26 Young-Min Kim , Chang-Hwan Lee , Derek Teaney , Ismail Zahed