Probing the Heavy Flavor Content in t tbar Events and Using t tbar Events as a Calibration Tool at CMS

Details Probing the Heavy Flavor Content in t tbar Events and Using t tbar Events as a Calibration Tool at CMS Probing the Heavy Flavor Content in t tbar Events and Using t tbar Events as a Calibration Tool at CMS

2009-10-19

arxiv.org/abs/0910.3329v1

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, To be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C090726

Scientific paper

We present two analyses dedicated to measure the ratio of branching ratios of the top quark, R=B(t->Wb)/(t->Wq) (where q=d,s,b), using ttbar events with either one or two prompt isolated leptons (e or mu) in the final state. Furthermore the framework of the dileptonic analysis was used also for a feasibility study of the measurement of b-tagging efficiency, by assuming the R value to be the Standard Model one. Data-driven techniques to control the background in the selected events are discussed and the expected simulation results are presented.

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