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Measurement of the Differential Cross Section dσ/d(cosθt) for Top-Quark Pair Production in pp¯ Collisions at s√=1.96  TeV


CDF Collaboration; et al; Canelli, F; Kilminster, B (2013). Measurement of the Differential Cross Section dσ/d(cosθt) for Top-Quark Pair Production in pp¯ Collisions at s√=1.96 TeV. Physical Review Letters, 111(18):182002.

Abstract

We report a measurement of the differential cross section dσ/d(cosθt) for top-quark pair production as a function of the top-quark production angle in proton-antiproton collisions at 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−1. 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.

Abstract

We report a measurement of the differential cross section dσ/d(cosθt) for top-quark pair production as a function of the top-quark production angle in proton-antiproton collisions at 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−1. 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.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2013
Deposited On:20 Feb 2014 08:02
Last Modified:08 Dec 2017 03:50
Publisher:American Physical Society
ISSN:0031-9007
Publisher DOI:https://doi.org/10.1103/PhysRevLett.111.182002

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