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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 / T., A., S., A., D., A., A., A., A., A., J., A., G., A., J. a., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., T., B., A., B.G., V. e., B., B. a., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 88:(2013), p. 072003. [10.1103/physrevd.88.072003]

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

BAUCE, MATTEO;GIAGU, Stefano;IORI, Maurizio;MARGAROLI, Fabrizio;
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.
2013
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the leptonic asymmetry in t(t)over-bar events produced in p(p)over-bar collisions at root s=1.96 TeV / T., A., S., A., D., A., A., A., A., A., J., A., G., A., J. a., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., T., B., A., B.G., V. e., B., B. a., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 88:(2013), p. 072003. [10.1103/physrevd.88.072003]
01a Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/555809
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