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Influence of the transverse dimensions of colliding beams on processes of bremsstrahlung and production of e/sup +/e/sup -/ pairs

Journal Article · · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:5932095
; ;

For high energies of colliding e/sup +/e/sup -/, ep, and ..gamma..e beams in processes of bremsstrahlung and production of e/sup +/e/sup -/ pairs, an important role is played by impact parameters much greater than the transverse dimensions of the beams. This leads to a decrease of the number of observed events in comparison with the standard calculations. Exact formulas and a number of convenient approximate formulas are obtained for the number of events in an arbitrary reaction with allowance for the finite dimensions of the beams. Concrete calculations are given for production of e/sup +/e/sup -/ pairs.The deviations from the standard calculations for e/sup +/e/sup -/ collisions under the conditions of LEP, SLC, and VLEPP are 1, 4, and 15%, respectively, and for ..gamma..e collisions under the conditions of SLC and VLEPP they are 20 and 35%, respectively.

Research Organization:
Novosibirsk State University
OSTI ID:
5932095
Journal Information:
Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 42:3; ISSN SJNCA
Country of Publication:
United States
Language:
English

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Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATOR FACILITIES
ACCELERATORS
BEAMS
COLLIDING BEAMS
CROSS SECTIONS
ELECTRON PAIRS
ELECTRON-NUCLEON INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELECTRON-PROTON INTERACTIONS
IMPACT PARAMETER
INTERACTIONS
LEP STORAGE RINGS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LINEAR ACCELERATORS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PHOTON-ELECTRON INTERACTIONS
PHOTON-LEPTON INTERACTIONS
STANFORD LINEAR COLLIDER
STORAGE RINGS
VEP-1