Search for WW and WZ Production in Lepton Plus Jets Final State at CDF
We present a search for WW and WZ production in final states that contain a charged lepton (electron or muon) and at least two jets, produced in $$\sqrt{s}$$ = 1.96 TeV ppbar collisions at the Fermilab Tevatron, using data corresponding to 1.2 $$fb^{-1}$$ of integrated luminosity collected with the CDF II detector. Diboson production in this decay channel has yet to be observed at hadron colliders due to the large single W plus jets background. An artificial neural network has been developed to increase signal sensitivity, as compared with an event selection based on conventional cuts. We set a 95% confidence level upper limit of $$\sigma_{WW}$$ x BR($$W \to l{\nu}_l, W \to jets$$) + $$\sigma_{WZ}$$ x BR($$W \to l{\nu}_l, Z \to jets$$) <2.88 pb, which is consistent with the standard model next to leading order cross section calculation for this decay channel of $$2.09 \pm 0.12 pb$$.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- CDF
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1847852
- Report Number(s):
- FERMILAB-PUB-09-054-E; arXiv:0903.0814; oai:inspirehep.net:814737
- Journal Information:
- Phys.Rev.D, Vol. 79
- Country of Publication:
- United States
- Language:
- English
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