Article
Photonphoton production of lepton, quark and meson pairs in peripheral heavy ion collisions
10/2011;
Source: arXiv
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ABSTRACT: A higher order QED calculation of the ultraperipheral heavy ion cross section for mu+ mu pair production at RHIC and LHC is carried out. The socalled "Coulomb corrections" lead to an even greater percentage decrease of mu+ mu production from perturbation theory than the corresponding decrease for e+ e pair production. Unlike the e+ e case, the finite charge distribution of the ions (form factor) and the necessary subtraction of impact parameters with matter overlap are significant effects in calculation an observable ultraperipheral mu+ mu total cross section.Physical Review C 09/2009; 80(3). DOI:10.1103/PhysRevC.80.034901 · 3.88 Impact Factor 
Chapter: Classical Electrodynamics
second 01/1975; John Wiley & Sons. 
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ABSTRACT: We formulate and analyse a saturation model for the total gammagamma and crosssections and for gamma(*)gamma(*) total crossthe real photon structure function F2(gamma)(x, Q(2)). The model is based on a picture in which the gamma(*)gamma(*) section for arbitrary photon virtualities is driven by the interaction of colour dipoles into which the virtual photons fluctuate. The crosssection describing this interaction is assumed to satisfy the saturation property with the saturation radius taken from the GolecBiernat and Wusthoff analysis of the gamma(*)p interaction at HERA. The model is supplemented by the QPM and nonpomeron reggeon contributions. The model gives a very good description of the data on the total crosssection, on the photon structure function F2(gamma)(x, Q(2)) at low x and on the gamma(*)gamma(*) crosssection extracted from LEP double tagged events. The production of heavy flavours in gammagamma collisions is also studied. Predictions of the model for the very high energy range which will be probed at future linear colliders are given.European Physical Journal C 01/2002; 23(3):513526. DOI:10.1007/s100520200893 · 5.44 Impact Factor
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