Quick Search:

is currently disabled due to reindexing of the ZORA database. Please use Advanced Search.
uzh logo
Browse by:
bullet
bullet
bullet
bullet

Zurich Open Repository and Archive 

Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-55344

Ahrens, V; Ferroglia, A; Neubert, M; Pecjak, B; Yang, L (2011). Top-pair forward-backward asymmetry beyond next-to-leading order. Physical Review D, 84(7):074004 .

[img]
Preview
Accepted Version
PDF
264kB

Abstract

We make use of recent results in effective theory and higher-order perturbative calculations to im- prove the theoretical predictions of the QCD contribution to the top-quark pair production forward- backward asymmetry at the Tevatron. In particular, we supplement the fixed-order NLO calculation with higher-order corrections from soft gluon resummation at NNLL accuracy performed in two dif- ferent kinematic schemes, which allows us to make improved predictions for the asymmetry in the pp ̄ and tt ̄ rest frames as a function of the rapidity and invariant mass of the tt ̄ pair. Furthermore, we provide binned results which can be compared with the recent measurements of the forward- backward asymmetry in events with a large pair invariant mass or rapidity difference. Finally, we calculate at NLO+NNLL order the top-quark charge asymmetry at the LHC as a function of a lower rapidity cut-off for the top and antitop quarks.

Other titles:The top-pair forward-backward asymmetry beyond NLO
Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
DDC:530 Physics
Language:English
Date:October 2011
Deposited On:19 Feb 2012 09:46
Last Modified:06 Dec 2013 03:54
Publisher:American Physical Society
ISSN:1550-7998 (P) 1089-4918 (E)
Publisher DOI:10.1103/PhysRevD.84.074004
Related URLs:http://arxiv.org/abs/1106.6051
Citations:Web of Science®. Times Cited: 58
Google Scholar™
Scopus®. Citation Count: 43

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page