Test of the Standard Model of electroweak interactions by measuring the anomalous $$WW\gamma$$ couplings at √s = 1.8-TeV
- Univ. of Notre Dame, IN (United States)
An analysis of Wγ events found in 73.0 pb-1 collected with the D0 detector during Tevatron Run 1b is presented. Forty-six candidate events are observed with a predicted background of 13.2 events. The total cross section for p$$\bar{p}$$ → Wγ + X (for pTγ > 10 GeV/c and ΔReγ > 0.7) times the branching ratio of W bosons to electrons is measured to be: σ(p$$\bar{p}$$ → Wγ + X) x BR(W → ev) = 11.19$$+2.66\atop{-2.32}$$ ± 0.61 (syst) ± 0.56 (lum) pb. 95% confidence level limits on the CP-conserving anomalous coupling parameters are set using a fit to the photon transverse energy spectrum of the events with a three-body transverse cluster mass greater than 90 GeV/c2. The results are: -1.4 < Δκ < 1.4 (λ = 0) and -0.5 < λ < 0.5 (Δκ = 0) with similar limits are set on the CP-violating coupling parameters $$\bar{κ}$$ and $$\bar{λ}$$. These limits were set by assuming a dipole form factor with a scale factor of {Lambda} = 1.5 TeV.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 878993
- Report Number(s):
- FERMILAB-THESIS-1996-14; TRN: US200623%%231
- Country of Publication:
- United States
- Language:
- English
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