Identifying boosted hadronically decaying top quark using jet substructure in its center-of-mass frame

Abstract

In this paper we study the identification of boosted hadronically decaying top quarks using jet substructure in the center-of-mass frame of the jet. We demonstrate that the method can greatly reduce the QCD jet background while maintaining high identification efficiency of the boosted top quark even in a very high pileup condition. Applications to searches for heavy resonances that decay to a $t\bar{t}$ final state are also discussed.

Comments: 6 pages, 6 figures. Published in Phys. Rev. D 87, 074007 (2013). arXiv admin note: text overlap with arXiv:1112.2567