Dalitz-Yennie-type equivalent-photon spectrum forγγcollisions in electron storage rings
- 1 July 1980
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 22 (1), 65-69
- https://doi.org/10.1103/physrevd.22.65
Abstract
It is shown that the Dalitz-Yennie version of the equivalent-photon approximation, originally established for electroproduction in the target rest frame, becomes inappropriate, to some extent, for application to collision experiments in electron storage rings, when the outgoing electrons are tagged at finite angles. For this type of experiment, a new Dalitz-Yennie-type formula is given, the use of which is, however, restricted in principle to single-tagging measurements. In the configurations thus considered, quantitative differences between the original and the new Dalitz-Yennie-type formula may become significant; a numerical comparison shows indeed that the new formula definitely provides a better approximation, with respect to an "effective-photon spectrum" derived from the exact calculation for various processes, than the former one.
Keywords
This publication has 6 references indexed in Scilit:
- Interpretation of single-tagged events inexperimentsPhysical Review D, 1980
- Validity of the equivalent-photon approximation for virtual photon-photon collisionsPhysical Review D, 1979
- Two-photon production processes at high energy. IPhysical Review D, 1977
- Two-Photon Mechanism of Particle Production by High-Energy Colliding BeamsPhysical Review D, 1971
- Experimental Investigation of Pion ElectroproductionPhysical Review B, 1963
- Pion Production in Electron-Proton CollisionsPhysical Review B, 1957