Implications for logarithmic-singularity contribution to e+e-→π+π-γ reaction at Q2=0.9 GeV2 from bremsstrahlung background
Journal
Physical Review D
Journal Volume
31
Journal Issue
9
Pages
2356-2359
Date Issued
1985
Author(s)
Abstract
The recent intriguing suggestion of Anisovich, Gerasjuta, Dakhno, and Kobrinsky concerning the effect of the logarithmic singularity in the reaction e+e-→π+π-γ via an intermediate triangle graph involving ω0π0 (and π0) is analyzed further for backgound effects. A detailed calculation of bremsstrahlung background suggests that this is larger than the singularity by at least a factor of 16 for photon emission angles (relative to the e+-e- axis) all the way up to 85°. This appears to make the experimental detection of the logarithmic-singularity effect rather difficult. © 1985 The American Physical Society.
Type
journal article