Search for anomalous WW/WZ → evjj production at D0; Busqueda de produccion anomala WW/WZ →evjj en D-Zero (in English;Spanish)
- Center for Research and Advanced Studies of the National Polytechnic Inst., Mexico D.F. (Mexico)
A search for anomalous WW and WZ production in p$$\bar{p}$$ collisions at √s = 1.8 TeV using the D0 detector at Fermilab is presented. With a data sample of p$$\bar{p}$$ → evjjX events corresponding to an integrated luminosity of 76.5 ± 4.1pb-1. 399 candidate events were identified, from which 387.1 ± 39.8 events were estimated to be background. No deviations from the Standard Model were seen, which predicts 16.2 ± 2.7 events. The 95% CL limit on the cross section σ(p$$\bar{p}$$ → W+W-X) was calculated to be 93.8 pb. Limits on the CP-conserving anomalous WWγ and WWZ coupling parameters were obtained from a binned likelihood fit to the transverse momentum spectrum of the W boson. Assuming that the WWγ and WWZ coupling parameters are equal, the 95% CL limits on the CP-conserving couplings are -0.56 < Δκ < 0.75 (with λ = 0) and -0.42 < λ < 0.44 (with Δκ = 0), for a form factor scale ΛFF = 1.5 TeV. Limits on other assumptions are also reported. These results were combined with the previous D0 WW, WZ → evjj published results (13.7 ± 0.7 pb-1), and the limits on the anomalous coupling parameters were set to -0.44 < Δκ < 0.60 (with λ = 0) and -0.34 < {lambda} 0.37 (with Δκ = 0), for a form factor scale ΛFF = 2.0 TeV.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 10154470
- Report Number(s):
- FNAL-97052661; ON: DE97052661; IN: D0NOTE-3189; E-740; TRN: AHC29928%%105
- Resource Relation:
- Other Information: DN: Thesis submitted to Centro de Invesigacion y de Estudios Avanzados, Physics Dept., Mexico City (MX); TH: Thesis (Ph.D.); PBD: Feb 1997
- Country of Publication:
- United States
- Language:
- English;Spanish
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