TESTING OF QUANTUM ELECTRODYNAMICS BY COMPTON SCATTERING AND PAIR ANNIHILATION (in German)
>In view of the present experimental efforts, Compton scattering and pair annihilation in night are analyzed as purely electrodynamic processes to test quantum electrodynamics at small distances. After a short discussion of the introduction of the form factors, the possibility of a (partial) cancellation between electrodynamic and nucleon structure effects are considered. The possibility of a partial cancellation of the nonlocal effects in Cumpton scattering and wide-angle bremsstrahlung also exists because of the opposite action of space-like and time-like form-tactor arguments. The Compton and the two photon pair annihilation cross sections are calculated with form factors, and the result is illustrated with several numerical diagrams. Two photon pair annihilation turns out to be especially favorable for a first test of quantum electrodynamics because there is no cancellation of possible nonlocal effects, and the necessary very high energy can be circumvented by a colliding beam experiment. With a l0 % experimental error, the planned colliding beam experiment at Stanford with 500 Mev could test the electron propagation function down to 0.6 x 10/sup -14/cm. After that, Compton scattering can be used to investigate the electron propagation function for time-like arguments. (auth)
- Research Organization:
- Univ., Freiburg i. Br.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-008248
- OSTI ID:
- 4108584
- Journal Information:
- Z. Physik, Vol. Vol: 160; Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
Similar Records
Testing the photon--photon sector of quantum electrodynamics with free-electron lasers
Neutral Pion Electroproduction and development of a Neutral Particle Spectrometer