Search for WZ+ZZ production with missing transverse energy+jets with b enhancement at s=1.96TeV
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چکیده
Citation Aaltonen, T. et al. " Search for WZ+ZZ Production with Missing Transverse Energy+jets with b Enhancement at Sqrt[s]=1.96 TeV. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Search for WZþZZ production with missing transverse energyþjets with b enhancement at ffiffi ffi s p ¼ 1:96 TeV Diboson production (WW þ WZ þ ZZ) has been observed at the Tevatron in hadronic decay modes dominated by the WW process. This paper describes the measurement of the cross section of WZ and ZZ events in final states with large 6 E T and using b-jet identification as a tool to suppress WW contributions. Because of the limited energy resolution, we cannot distinguish between partially hadronic decays of WZ and ZZ, and we measure the sum of these processes. The number of signal events is extracted using a simultaneous fit to the invariant mass distribution of the two jets for events with two b-jet candidates and events with fewer than two b-jet candidates. We measure a cross section ðp " p ! WZ; ZZÞ ¼ 5:8 þ3:6 À3:0 pb, in agreement with the standard model.
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تاریخ انتشار 2012