Exclusion of an exotic top quark with -4/3 electric charge using soft lepton tagging.

Journal article

We present a measurement of the electric charge of the top quark using pp collisions corresponding to an integrated luminosity of 2.7 fb(-1) at the CDF II detector. We reconstruct tt events in the lepton + jets final state. We use soft lepton taggers to determine the flavor of the b jets, which we use to reconstruct the top quark's electric charge and exclude an exotic top quark with -4/3 charge at 95% confidence level. This is the strongest exclusion of the exotic charge scenario and the first to use soft leptons for this purpose.

Authors: Aaltonen, T; Adelman, J; Alvarez González, B; Amerio, S; Amidei, D

• Publication status: Published
• Journal: Physical Review Letters
• Volume: 105
• Issue: 10
• Pages: 101801
• Publication date: 2010-09-01
• DOI: 10.1103/physrevlett.105.101801
• EISSN: 1079-7114
• ISSN: 0031-9007
• Language: English
• Keywords: CDF Collaboration