Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-04-19
Phys.Lett. B483 (2000) 99-104
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 5 figures
Scientific paper
10.1016/S0370-2693(00)00583-9
Future hadron collider experiments are expected to record large to huge samples of $t\bar t$ events. The analysis of these data with respect to $t\bar t$ spin-spin correlations requires precise predictions of the production of these quark pairs in a general spin configuration. Therefore we have computed, at next-to-leading order (NLO) in the QCD coupling, the spin density matrices describing $t\bar t$ production by quark antiquark annihilation, which is the dominant production process at the Tevatron. Moreover we have computed the strength of the $t\bar t$ spin correlation at NLO, using various spin quantization axes.
Bernreuther Werner
Brandenburg Axel
Si Zong-Guo
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