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

Abstract: We measure the asymmetry in the charge-weighted rapidity qy? 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 qy? is used to correct for the finite acceptance of the detector and recover the production-level asymmetry. The result of A?FB=0.094+0.032?0.029 is to be compared to the standard model next-to-leading-order prediction of A?FB=0.038±0.003.

Autoría: Aaltonen T., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Bae T., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bedeschi F., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Bland K.R., Blumenfeld B., Bocci A., Bodek A., Bortoletto

Fuente: Physical Review D, 2013, 88, 072003

Editorial: American Physical Society

Año de publicación: 2013

Nº de páginas: 12

Tipo de publicación: Artículo de Revista

DOI: 10.1103/PhysRevD.88.072003

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Url de la publicación: https://doi.org/10.1103/PhysRevD.88.072003

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