Helicity Amplitudes for Single-Top Production

Details Helicity Amplitudes for Single-Top Production Helicity Amplitudes for Single-Top Production

2000-03-31

arxiv.org/abs/hep-ph/0003318v2

Phys.Rev.D62:074025,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 7 figures, final version

Scientific paper

10.1103/PhysRevD.62.074025

Single top quark production at hadron colliders allows a direct measurement of the top quark charged current coupling. We present the complete tree-level helicity amplitudes for four processes involving the production and semileptonic decay of a single top quark: W-gluon fusion, flavor excitation, s-channel production and W-associated production. For the first three processes we study the quality of the narrow top width approximation. We also examine momentum and angular distributions of some of the final state particles.

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