2002/01/29 by E. E. Boos, E.E. Boos, A. V. Sherstnev +1 · 1 citation
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/s0370-2693(02)01659-3
published as Phys.Lett. B534 (2002) 97-105 · 14 pages, latex
arxiv created 2002/01/29 · openalex publication_date 2002/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We investigate spin properties of single top quark production at hadron colliders. Based on an analogy with single top production and polarized top quark decay, we reproduce in a simple way the results by G.Mahlon and S.Parke on the existence of preferred axes for the decomposition of the top quark spin. For the W*- and W-g fusion production modes these axes are related to the down-type quark momentum. The proposed method allows finding kinematical conditions for the observation of top quark polarization in a third process that contributes to single top production and is important at LHC energies, the tW-process, in which spin effects are smeared out by the contribution of diagrams with a QCD gtt-vertex. A simple Monte-Carlo analysis of spin correlations for the tW-process with subsequent top decay is given as an illustration.