TY - JOUR
T1 - Hadronic top-quark pair production with NNLL threshold resummation
AU - Beneke, M.
AU - Falgari, P.
AU - Klein, S.
AU - Schwinn, C.
N1 - Funding Information:
We would like to thank M. Cacciari, M. Mangano and A. Mitov for fruitful discussions during the completion of this manuscript. M.B. also thanks the Kavli Institute for Theoretical Physics at UC Santa Barbara for hospitality while part of this work was done. The work of M.B. and S.K. is supported by the DFG Sonderforschungsbereich/Transregio 9 “Computergestützte Theoretische Teilchenphysik” . P.F. acknowledges support by the “Stichting voor Fundamenteel Onderzoek der Materie (FOM)” . This research was supported in part by the National Science Foundation under Grant No. PHY05-51164 .
PY - 2012/2/21
Y1 - 2012/2/21
N2 - We compute the total top-quark pair production cross section at the Tevatron and LHC based on approximate NNLO results, and on the summation of threshold logarithms and Coulomb enhancements to all orders with next-to-next-to-leading logarithmic (NNLL) accuracy, including bound-state effects. We findσtt̄(Tevatron)=(7.22-0.47+0.31-0.55+0.71) pb,σtt̄(LHC,s=7 TeV)=(162.6-7.6+7.4-14.7+15.4) pb for mt=173.3 GeV. The implementation of joint soft and Coulomb resummation, its ambiguities, and the present theoretical uncertainty are discussed in detail. We further obtain new approximate results at N3LO.
AB - We compute the total top-quark pair production cross section at the Tevatron and LHC based on approximate NNLO results, and on the summation of threshold logarithms and Coulomb enhancements to all orders with next-to-next-to-leading logarithmic (NNLL) accuracy, including bound-state effects. We findσtt̄(Tevatron)=(7.22-0.47+0.31-0.55+0.71) pb,σtt̄(LHC,s=7 TeV)=(162.6-7.6+7.4-14.7+15.4) pb for mt=173.3 GeV. The implementation of joint soft and Coulomb resummation, its ambiguities, and the present theoretical uncertainty are discussed in detail. We further obtain new approximate results at N3LO.
UR - https://www.scopus.com/pages/publications/82555187083
U2 - 10.1016/j.nuclphysb.2011.10.021
DO - 10.1016/j.nuclphysb.2011.10.021
M3 - Article
AN - SCOPUS:82555187083
SN - 0550-3213
VL - 855
SP - 695
EP - 741
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 3
ER -