2011/08/31 by CDF Collaboration, T. Aaltonen, B. Álvarez González +536
Physics and Astronomy · #Energy (signal processing) #Hadron #High-Energy Particle Collisions Research #Invariant mass #Jet (fluid) #Large Hadron Collider #Measure (data warehouse) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Sigma #Tevatron #hep-ex
paper · pdf · doi:10.1103/physrevd.85.012002
published as Phys. Rev. D 85, 012002 (2012) · 10 pages, 5 figures
openalex publication_date 2012/01/06 · arxiv created 2012/01/13 · arxiv updated 2012/01/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
Diboson production (WW+WZ+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 \mathrmE\ensuremath\llap\not 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 \ensuremathσ(pp\ensuremath→WZ,ZZ)=5.8_\ensuremath-3.0+3.6 pb, in agreement with the standard model.