Published September 1997
| Version v1
Journal article
Positron Production in Multiphoton Light-by-Light Scattering
Creators
- 1. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)
- 2. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
- 3. Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (United States)
- 4. Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States)
Description
A signal of 106±14 positrons above background has been observed in collisions of a low-emittance 46.6GeV electron beam with terawatt pulses from a Nd:glass laser at 527nm wavelength in an experiment at the Final Focus Test Beam at SLAC. The positrons are interpreted as arising from a two-step process in which laser photons are backscattered to GeV energies by the electron beam followed by a collision between the high-energy photon and several laser photons to produce an electron-positron pair. These results are the first laboratory evidence for inelastic light-by-light scattering involving only real photons. copyright 1997 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 79
- Journal Issue
- 9
- Journal Page Range
- p. 1626-1629
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30006197
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ELECTRON BEAMS; LIGHT SCATTERING; PAIR PRODUCTION; PARTICLE PRODUCTION; PHOTON-PHOTON INTERACTIONS; POSITRONS; SIGNALS; WAVELENGTHS
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BASIC INTERACTIONS; BEAMS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; INTERACTIONS; LEPTON BEAMS; LEPTONS; MATTER; PARTICLE BEAMS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; SCATTERING