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Single top production at HERA in the Standard Model and its minimal supersymmetric extension

W. Hollik·A. Huettmann·B. A. Kniehl
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Abstract

The H1 Collaboration at the DESY electron-proton collider HERA has observed, in photoproduction and neutral-current deep-inelastic scattering, an unexpected excess of events with isolated leptons and missing transverse momentum, especially at large values of hadronic transverse momentum - a signature typical for single top-quark production. This observation is being substantiated in the HERA II run. Motivated by this, we evaluate the cross section of single top-quark photo- and electroproduction both in the standard model and its minimal supersymmetric extension, considering both minimal and non-minimal flavour-violation scenarios in the latter case.

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W. Hollik, A. Huettmann, B. A. Kniehl. 2007-10-17. Single top production at HERA in the Standard Model and its minimal supersymmetric extension. https://doi.org/10.1016/j.nuclphysb.2007.09.004

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