We measure the asymmetry in the charge-weighted rapidity qyℓ of the lepton in semileptonic tt¯ 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.

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

Cauz D.;Santi L.;
2013-01-01

Abstract

We measure the asymmetry in the charge-weighted rapidity qyℓ of the lepton in semileptonic tt¯ 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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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11390/984149
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