Electroweak corrections to top-quark pair production in quark–antiquark annihilation
نویسندگان
چکیده
Top-quark physics plays an important rôle at hadron colliders such as the Tevatron at Fermilab or the LHC at CERN. Given the planned precision at these colliders, precise theoretical predictions are required. In this paper we present the complete electroweak corrections to QCD-induced top-quark pair production in quark–antiquark annihilation. In particular we provide compact analytic expressions for the differential partonic cross section, which will be useful for further theoretical investigations.
منابع مشابه
Mixed QCD and weak corrections to top quark pair production at hadron colliders
The order αs α mixed QCD and weak corrections to top quark pair production by quark antiquark annihilation are computed, keeping the full dependence on the t and t̄ spins. We determine the contributions to the cross section and to single and double top spin asymmetries at the parton level. These results are necessary ingredients for precise standard model predictions of top quark observables, in...
متن کاملCorrections to the Hadronic Cross Section Near Heavy Quark-Antiquark Thresholds in e+e− Annihilation
It is demonstrated how perturbative O(α2 s ) relativistic corrections to the non-relativistic stable heavy quark-antiquark production cross section in ee annihilation based on a Coulombic QCD potential can be systematically calculated using the concept of effective field theories. The O(αs) corrections from the relativistic energy-momentum relation, the relativistic phase space corrections and ...
متن کاملStrong and electroweak NLO corrections to Higgs-boson production in vector-boson fusion at the LHC
We present results on the strong and electroweak NLO corrections to the production of a Higgs boson plus two hard jets via weak interactions at the LHC. The calculation includes all weak-boson fusion and quark– antiquark annihilation diagrams as well as all related interferences. We discuss corrections of different origin (QCD corrections of vector-boson-fusion type and interferences, electrowe...
متن کاملTwo-loop planar corrections to heavy-quark pair production in the quark-antiquark channel
We evaluate the planar two-loop QCD diagrams contributing to the leading color coefficient of the heavy-quark pair production cross section, in the quark-antiquark annihilation channel. We obtain the leading color coefficient in an analytic form, in terms of oneand two-dimensional harmonic polylogarithms of maximal weight 4. The result is valid for arbitrary values of the Mandelstam invariants ...
متن کاملSupersymmetric Electroweak Corrections to Top Quark Production at LHC
The αmt /m 2 W order supersymmetric electroweak corrections arising from loops of chargino, neutralino, and squark to top quark pair production by gg fusion at LHC are calculated in the minimal supersymmetric model. We found that the corrections amount about a few percent.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005