Single Top Production in $e^+ e^-$, $e^- e^-$, $γe$ and $γγ$ Collisions

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dc.creatorBoos, E.
dc.creatorDubinin, M.
dc.creatorPukhov, A.
dc.creatorSachwitz, M.
dc.creatorSchreiber, H. J.
dc.date2001-04-26
dc.date.accessioned2026-07-07T12:26:15Z
dc.date.available2026-07-07T12:26:15Z
dc.descriptionSingle top quark cross section evaluations for the complete sets of tree-level diagrams in the $e^+ e^-$, $e^- e^-$, $γe$ and $γγ$ modes of the next linear collider with unpolarized and polarized beams are performed within the Standard Model and beyond. From comparison of all possibilities we conclude that the process $γ_+ e^-_L \to e^- t \bar b$ is extremely favoured due to large cross section, no $t \bar t$ background, high degrees of beam polarization, and exceptional sensitivities to $V_{tb}$ and anomalous $Wtb$ couplings. Similar reasons favour the process $e^- e^- \to e^- ν_e \bar t b$ for probing top quark properties despite a considerably lower cross section. Less favourable are processes like $e^+ e^-, γγ\to e^- ν_e t \bar b$. Three processes were chosen to probe their sensitivity to anomalous $Wtb$ couplings, with best bounds found for $γ_+ e^-_L \to e^- t \bar b$ and $e^+_R e^-_R \to e^- ν_e t \bar b$.
dc.description23 pages, 13 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0104279
dc.identifierhttp://arxiv.org/abs/hep-ph/0104279
dc.identifierEur.Phys.J.C21:81-91,2001
dc.identifierdoi:10.1007/s100520100733
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214824
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSingle Top Production in $e^+ e^-$, $e^- e^-$, $γe$ and $γγ$ Collisions
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