Reconstruction of High Transverse Momentum Top Quarks at CMS

Details Reconstruction of High Transverse Momentum Top Quarks at CMS Reconstruction of High Transverse Momentum Top Quarks at CMS

2009-09-26

arxiv.org/abs/0909.4894v1

Physics

High Energy Physics

High Energy Physics - Experiment

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

Scientific paper

High mass resonances decaying into ttbar pairs appear in many extensions of the Standard Model. The top quarks from these decays have high transverse momenta and their decay products are highly collimated due to the boost into the lab frame. As a result the standard techniques for reconstructing ttbar events begin to fail. In this talk we discuss the prospects for detecting booted top quarks at CMS. A new top jet tagging algorithm is presented. This algorithm achieves an efficiency of 46% for boosted top jets and rejection of 98.5% for generic QCD jets with transverse momenta of 600 GeV/$c$.

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