Measurement of the b-jet Cross section in events with a Z Boson

Document(s) Web Page       Public Note Contact(s) Lorenzo Ortolan, Stefano Camarda, Veronica Sorin, Sebastian Grinstein, Mario Martinez Abstract The b jet production cross section is measured for events with a Z boson (decaying leptonically) in 7.86 fb-1 of data. Events are selected by requiring two high pTjet electrons or muons and high pTjet central jets, among which jets are further required to be b-tagged. Results of the ratio of the Z+b - jet cross section with respect to Z and Z+jets cross sections are compared with predictions from ALPGEN and NLO QCD (MCFM). Comments Last Update: Dec 2011       Dataset: 8 fb-1