/ hep-ex FERMILAB-PUB-13-194-E

Differential cross section d{\sigma}/d(cos {\theta}t) for top-quark-pair-production in p-pbar collisions at sqrt{s} = 1.96 TeV

Published in: Phys.Rev.Lett.

Abstract: We report a measurement of the differential cross section, d{\sigma}/d(cos {\theta}t), for top-quark-pair production as a function of the top-quark production angle in proton-antiproton collisions at sqrt{s} = 1.96 TeV. This measurement is performed using data collected with the CDF II detector at the Tevatron, corresponding to an integrated luminosity of 9.4/fb. We employ the Legendre polynomials to characterize the shape of the differential cross section at the parton level. The observed Legendre coefficients are in good agreement with the prediction of the next-to-leading-order standard-model calculation, with the exception of an excess linear-term coefficient, a1 = 0.40 +- 0.12, compared to the standard-model prediction of a1 = 0.15^{+0.07}_{-0.03}.

Note: *Temporary entry*; For submission to Phys. Rev. Lett. Also includes supplementary material for PRL

Total numbers of views: 1502
Numbers of unique views: 671
Запись создана 2013-07-18, последняя модификация 2014-01-30

Внешние ссылки:
Полный текст
Оценить этот документ:

1
2
3

(Еще не рецензированная)