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

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Identificadores
URI: https://hdl.handle.net/10902/28864
ISSN: 1550-7998
ISSN: 1550-2368
ISSN: 2470-0010
ISSN: 2470-0029
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Autoría
Aaltonen, Timo Antero; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, GervasioAutoridad Unican; Palencia Cortezón, José Enrique; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vilar Cortabitarte, RocíoAutoridad Unican; Vizán García, Jesús ManuelAutoridad Unican
Fecha
2013
Derechos
© 2013 American Physical Society
Publicado en
Physical Review D, 2013, 88(7), 072003
Editorial
American Physical Society
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Resumen/Abstract
We measure the asymmetry in the charge-weighted rapidity qyℓ of the lepton in semileptonic t¯t decays recorded with the CDF II detector using the full Tevatron Run II sample, corresponding to an integrated luminosity of 9.4  fb−1. A parametrization of the asymmetry as a function of qyℓ is used to correct for the finite acceptance of the detector and recover the production-level asymmetry. The result of AℓFB=0.094+0.032−0.029 is to be compared to the standard model next-to-leading-order prediction of AℓFB=0.038±0.003.
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