Electron-positron pair production in Coulomb collisions by 6.4-TeV sulfur ions

Vane, C. R.; Datz, S.; Dittner, P.F.; Krause, H. F.; Schuch, R.; Gao, Hui; Hutton, R.

doi:10.1103/physreva.50.2313

Cited by 40 publications

(38 citation statements)

References 36 publications

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“…Other SPS studies found similar results, with general agreement to lowest order calculations [70,71].…”

Section: Pair Production At Particle Colliderssupporting

confidence: 82%

Pair production from 10 GeV to 10 ZeV

Klein

2006

Radiation Physics and Chemistry

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At very high energies, pair production (γ → e + e − ) exhibits many interesting features. The momentum transfer from the target is very small, so the reaction probes the macroscopic properties of the target, rather than individual nuclei. Interference between interactions with different atoms reduces the pair production cross section considerably below the Bethe-Heitler values. At very high energies, photonuclear interactions may outnumber pair production.In contrast, in crystals, the interaction amplitudes may add coherently, greatly increasing the cross sections. Pair production in matter-free magnetic fields is also possible. The highest energy pair production occurs at high energy particle colliders. This article will compare pair production in these very different regimes.

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“…Other SPS studies found similar results, with general agreement to lowest order calculations [70,71].…”

Section: Pair Production At Particle Colliderssupporting

confidence: 82%

Pair production from 10 GeV to 10 ZeV

Klein

2006

Radiation Physics and Chemistry

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“…Previous measurements of e + e − pair production were at much lower energies [10,11]. The cross sections, pairmasses, angular and p T distributions generally agreed with the leading-order QED perturbative calculations.…”

supporting

confidence: 74%

“…For some kinematic variables, 30-60 % asymmetries may occur [28]. A study of e + e − production in sulfurnucleus collisions at ͱ s NN = 20 GeV per nucleon pair found that the positrons had a higher average energy than the electrons [10]. However, the atomic electrons in the target could have contributed to the result.…”

mentioning

confidence: 99%

Production ofe+e−pairs accompanied by nuclear dissociation in ultraperipheral heavy-ion collisions

Adams¹,

Aggarwal²,

Ahammed³

et al. 2004

Phys. Rev. C

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“…In view of the experimental result of [38,39,40] which observed an almost exact Z 2 scaling of the positron yield (or, equivalently, the number of produced pairs) apparently incompatible with large Coulomb corrections, one should mention a possible shortcoming of such a model. As explained in reference [12], the Coulomb corrections in the integral Eq.…”

Section: Papers [4 11]mentioning

confidence: 99%

Coulomb corrections to e+e− production in ultra-relativistic nuclear collisions

et al. 2001

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The purpose of this paper is to explain the discrepancies existing in the literature relative to e + e − pair production in peripheral heavy ion collisions at ultra-relativistic energies. A controversial issue is the possible cancellation of Coulomb corrections to the Born term in the pair production cross-section. Such a cancellation has been observed in a recent approach based on finding retarded solutions of the Dirac equation, but does not seem to hold in a perturbative approach. We show in this paper that the two approaches are in fact calculating different observables: the perturbative approach gives the exclusive cross-section of single pair production, while the other method gives the inclusive cross-section.We have also performed a thorough study of the electron propagator in the non-static background field of the two nuclei, the conclusion of which is that the retarded propagator is in the ultra-relativistic limit a much simpler object than the Feynman propagator, and can be calculated exactly.

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Electron-positron pair production in Coulomb collisions by 6.4-TeV sulfur ions

Cited by 40 publications

References 36 publications

Pair production from 10 GeV to 10 ZeV

Pair production from 10 GeV to 10 ZeV

Production ofe+e−pairs accompanied by nuclear dissociation in ultraperipheral heavy-ion collisions

Coulomb corrections to e+e− production in ultra-relativistic nuclear collisions

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