We measure the asymmetry in the charge-weighted rapidity qy(l) of the lepton in semileptonic t (t) over bar 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 qy(l) is used to correct for the finite acceptance of the detector and recover the production-level asymmetry. The result of A(FB)(l) = 0.094(-0.029)(+0.032) is to be compared to the standard model next-to-leading-order prediction of A(FB)(l) = 0.038 +/- 0.003.

Measurement of the leptonic asymmetry in t(t)over-bar events produced in p(p)over-bar collisions at root s=1.96 TeV

AMERIO, SILVIA;BUSETTO, GIOVANNI;LUCCHESI, DONATELLA;
2013

Abstract

We measure the asymmetry in the charge-weighted rapidity qy(l) of the lepton in semileptonic t (t) over bar 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 qy(l) is used to correct for the finite acceptance of the detector and recover the production-level asymmetry. The result of A(FB)(l) = 0.094(-0.029)(+0.032) is to be compared to the standard model next-to-leading-order prediction of A(FB)(l) = 0.038 +/- 0.003.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2806164
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