Measurement of the leptonic asymmetry in t[¯ over t] events produced in p[¯ over p] collisions at √s = 1.96 TeV
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Aaltonen-2013-Measurement of the leptonic.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Date Issued
October 2013
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
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.88.072003
