Measurement of the top quark charge in pp collisions at √s = 7 TeV with the ATLAS detector

• Main Authors: Taylor, Frank E. (Contributor), Aad, G. (Author), Abajyan, T. (Author), Abbott, B. (Author), Abdallah, J. (Author), Abdel Khalek, S. (Author), Abdelalim, A. A. (Author), Abdinov, O. (Author), Aben, R. (Author), Abi, B. (Author), Abolins, M. (Author), AbouZeid, O. S. (Author), Abramowicz, H. (Author), Abreu, H. (Author), Abulaiti, Y. (Author), Acharya, B. S. (Author), Adamczyk, L. (Author), Adams, D. L. (Author), Addy, T. N. (Author), Adelman, J. (Author)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor)
• Format: Article
• Language: English
• Published: Springer-Verlag, 2014-01-24T14:44:30Z.
• Subjects: Article
• Online Access: Get fulltext

A measurement of the top quark electric charge is carried out in the ATLAS experiment at the Large Hadron Collider using 2.05 fb[superscript −1] of data at a centre-of-mass energy of 7 TeV. In units of the elementary electric charge, the top quark charge is determined to be 0.64 ± 0.02 (stat.) ± 0.08 (syst.) from the charges of the top quark decay products in single lepton t[¯ over t] candidate events. This excludes models that propose a heavy quark of electric charge −4/3, instead of the Standard Model top quark, with a significance of more than 8σ.
United States. Dept. of Energy
National Science Foundation (U.S.)
Brookhaven National Laboratory