Eur. Phys. J. C 21, 81-91 (2001)
Single top production in e+ e-, e- e-, and collisionsE. Boos1, 2, M. Dubinin1, 2, A. Pukhov1, M. Sachwitz2 and H.J. Schreiber2
1 Institute of Nuclear Physics, Moscow State University, 119899 Moscow, Russia
2 DESY Zeuthen, 15738 Zeuthen, Germany
(Received: 27 April 2001 / Revised version: 31 May 2001 / Published online: 19 July 2001 -© Springer-Verlag / Società Italiana di Fisica 2001 )
Single top quark cross section evaluations for the complete sets of tree-level diagrams in the e+ e-, e- e-, and modes of the next linear collider with unpolarized and polarized beams are performed within the standard model and beyond. From a comparison of all possibilities we conclude that the process is extremely favored due to large cross sections, there being no background, the high degrees of beam polarization, and the exceptional sensitivities to Vtb and anomalous Wtb couplings. Similar reasons favor the process for probing top quark properties despite a considerably lower cross section. Less favorable are processes like . Three processes were chosen to probe their sensitivities to anomalous Wtb couplings, with best bounds found for and .
© Società Italiana di Fisica, Springer-Verlag 2001