Combined forward-backward asymmetry measurements in top-antitop quark production at the tevatron

Aaltonen, T; Abazov, V M; Abbott, B; Acharya, B S; Adams, M; Adams, T; Agnew, J P; Alexeev, G D; Alkhazov, G; Alton, A; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Arisawa, T; Artikov, A; Asaadi, J; Ashmanskas, W; Askew, A; Atkins, S; Auerbach, B; Augsten, K; Aurisano, A; Aushev, V; Aushev, Y; Avila, C; Azfar, F; Canelli, F; Kilminster, B; et al

doi:10.1103/PhysRevLett.120.042001

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Combined forward-backward asymmetry measurements in top-antitop quark production at the tevatron

Aaltonen, T; Abazov, V M; Abbott, B; Acharya, B S; Adams, M; Adams, T; Agnew, J P; Alexeev, G D; Alkhazov, G; Alton, A; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Arisawa, T; Artikov, A; Asaadi, J; Ashmanskas, W; Askew, A; Atkins, S; Auerbach, B; Augsten, K; Aurisano, A; Aushev, V; Aushev, Y; Avila, C; Azfar, F; Canelli, F; Kilminster, B; et al (2018). Combined forward-backward asymmetry measurements in top-antitop quark production at the tevatron. Physical Review Letters, 120(4):042001.

Abstract

The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of $\sqrt{s}$ = 1.96 TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is $A^{t\overline{t}}_{FB} = 0.128 \pm 0.025$. The combined inclusive and differential asymmetries are consistent with recent standard model predictions.

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Item Type:	Journal Article, refereed, original work
Communities & Collections:	07 Faculty of Science > Physics Institute
Dewey Decimal Classification:	530 Physics
Scopus Subject Areas:	Physical Sciences > General Physics and Astronomy
Language:	English
Date:	2018
Deposited On:	15 Feb 2018 13:33
Last Modified:	29 Jul 2020 06:58
Publisher:	American Physical Society
ISSN:	0031-9007
OA Status:	Hybrid
Free access at:	Publisher DOI. An embargo period may apply.
Publisher DOI:	https://doi.org/10.1103/PhysRevLett.120.042001
Project Information:	: FunderFP7 : Grant ID302103 : Project TitleTAUKITFORNEWPHYSICS - Tau Toolkit for opening the New Physics Window at LHC and possible spin off effects