Measurement of the electric charge of the top quark in events
Journal Article
·
· Physical Review. D, Particles, Fields, Gravitation and Cosmology
We present a measurement of the electric charge of top quarks using $$t\bar{t}$$ events produced in $$p\bar{p}$$ collisions at the Tevatron. The analysis is based on fully reconstructed $$t\bar{t}$$ pairs in lepton+jets final states. Using data corresponding to 5.3 $$\rm fb^{-1}$$ of integrated luminosity, we exclude the hypothesis that the top quark has a charge of $$Q=-4/3\,e$$ at a significance greater than 5 standard deviations. We also place an upper limit of 0.46 on the fraction of such quarks that can be present in an admixture with the standard model top quarks ($$Q=+2/3\,e$$) at a 95\% confidence level.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- D0 Collaboration
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1296754
- Report Number(s):
- FERMILAB-PUB-14-237-E; arXiv:1407.4837; 1306901
- Journal Information:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 90, Issue 5; ISSN 1550-7998
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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