Weak interaction corrections to hadronic top quark pair production
| dc.creator | Bernreuther, Werner | |
| dc.creator | Fuecker, Michael | |
| dc.creator | Si, Zong-Guo | |
| dc.date | 2006-10-25 | |
| dc.date | 2006-11-30 | |
| dc.date.accessioned | 2026-07-07T11:06:01Z | |
| dc.date.available | 2026-07-07T11:06:01Z | |
| dc.description | In this paper we determine the weak-interaction corrections of order $α_s^2α$ to hadronic top-quark pair production. First we compute the one-loop weak corrections to $t \bar t$ production due to gluon fusion and the order $α_s^2α$ corrections to $t \bar t$ production due to (anti)quark gluon scattering in the Standard Model. With our previous result this yields the complete corrections of order $α_s^2α$ to $gg$, $q \bar q$, $q g$, and ${\bar q} g$ induced hadronic $t \bar t$ production with $t$ and $\bar t$ polarizations and spin-correlations fully taken into account. For the Tevatron and the LHC we determine the weak contributions to the transverse top-momentum and to the $t \bar t$ invariant mass distributions. At the LHC these corrections can be of the order of 10 percent compared with the leading-order results, for large $p_T$ and $\mtt$, respectively. Apart from parity-even $t \bar t$ spin correlations we analyze also parity-violating double and single spin asymmetries, and show how they are related if CP invariance holds. For $t$ (and $\bar t$) quarks which decay semileptonically, we compute a resulting charged-lepton forward-backward asymmetry $A_{PV}$ with respect to the $t$ ($\bar t$) direction, which is of the order of one percent at the LHC for suitable invariant-mass cuts. | |
| dc.description | Latex, 27 figures, 4 tables. 1 figure and 3 references added, scale of 4 figures changed, version to appear in Phys. Rev. D | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0610334 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0610334 | |
| dc.identifier | Phys.Rev.D74:113005,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.74.113005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189385 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Weak interaction corrections to hadronic top quark pair production | |
| dc.type | text |