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.

T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, et al. (2013). Measurement of the leptonic asymmetry in t(t)over-bar events produced in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88, 072003-1-072003-32 [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

BRIGLIADORI, LUCA;CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
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
T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, et al. (2013). Measurement of the leptonic asymmetry in t(t)over-bar events produced in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88, 072003-1-072003-32 [10.1103/PhysRevD.88.072003].
T. Aaltonen;S. Amerio;D. Amidei;A. Anastassov;A. Annovi;J. Antos;G. Apollinari;J. A. Appel;T. Arisawa;A. Artikov;J. Asaadi;W. Ashmanskas;B. Auerbach;A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/229731
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