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Title: High-Energy γ -Ray Source from Electron-Positron Pair Annihilation

Journal Article · · Physical Review
 [1]
  1. Stanford Univ., CA (United States). Stanford Linear Accelerator Center
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Problems associated with the use of the process e++e-→2$$\gamma$$ as a source for high-energy $$\gamma$$ rays are investigated. The polarization of the $$\gamma$$'s is shown to be negligible at high energies. The spread of $$\gamma$$ spectra at a fixed angle due to radiative corrections is investigated. Terms like ($$\frac{a}{π}$$) 1n2 ($$\frac{4E^2}{m^2}$$) are associated with infrared divergence and disappear with a reasonable energy resolution. The result is very similar to Schwinger's corrections without vacuum polarization. Our result was found to be also usable in the colliding-beam experiment without any modification, under certain conditions.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1444159
Report Number(s):
SLAC-PUB-0045; PHRVAO
Journal Information:
Physical Review, Vol. 137, Issue 3B; ISSN 0031-899X
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (6)

Radiative Corrections to Compton Scattering journal January 1952
Radiative Corrections to Electron-Proton Scattering journal June 1961
Polarization Effects in the Two-Quantum Annihilation of Positrons journal May 1957
Theory of Photons and Electrons journal April 1957
The infrared divergence phenomena and high-energy processes journal June 1961
Radiative Corrections to Pair Annihilation journal March 1957

Figures / Tables (12)

TABLE I(p. 8)table TABLE I
Figure 1(p. 34)figure Figure 1
Figure 2(p. 35)figure Figure 2
Figure 3(p. 36)figure Figure 3
Figure 4(p. 37)figure Figure 4
Figure 5(p. 38)figure Figure 5
Figure 6(p. 39)figure Figure 6
Figure 7(p. 40)figure Figure 7
Figure 8(p. 41)figure Figure 8
Figure 9(p. 42)figure Figure 9
Figure 10(p. 43)figure Figure 10
Figure 11(p. 44)figure Figure 11

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS