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Measurement of the leptonic asymmetry in t[¯ over t] events produced in p[¯ over p] collisions at √s = 1.96  TeV

Author(s)
Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E.
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Abstract
We measure the asymmetry in the charge-weighted rapidity qy[subscript ℓ] of the lepton in semileptonic t[¯ over t] decays recorded with the CDF II detector using the full Tevatron Run II sample, corresponding to an integrated luminosity of 9.4  fb[superscript −1]. A parametrization of the asymmetry as a function of qy[subscript ℓ] is used to correct for the finite acceptance of the detector and recover the production-level asymmetry. The result of A[ℓ over FB] = 0.094[+0.032 over −0.029] is to be compared to the standard model next-to-leading-order prediction of A[ℓ over FB] = 0.038 ± 0.003.
Date issued
2013-10
URI
http://hdl.handle.net/1721.1/84690
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Measurement of the leptonic asymmetry in t[¯ over t] events produced in p[¯ over p] collisions at √s = 1.96  TeV.” Physical Review D 88, no. 7 (October 2013). © 2013 American Physical Society
Version: Final published version
ISSN
1550-7998
1550-2368

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