Direct measurement of the W-γ coupling at the CERN overlinepp Collider
Abstract
The process overlinepp→ evγ+ X is studied as √ s=630 GeV. The observed signal is used to extract a direct measurement of the parameters κ and λ which define the magnetic dipole and electric quadrupole moments of the W boson and therefore the WWγ coupling. We find κ=1 +2.6-2.2 and λ=0 +1.7-1.8 and their 95% confidence limits -3.5< κ<5.9 and -3.6< λ<3.5. The results are model indepedent and in good agreement with the standard model values, κ=1 and λ=0.
- Publication:
-
Physics Letters B
- Pub Date:
- February 1992
- DOI:
- 10.1016/0370-2693(92)90979-E
- Bibcode:
- 1992PhLB..277..194A