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      QCD Corrections to t anti-b H^- Associated Production in e^+ e^- Annihilation

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          Abstract

          We calculate the QCD corrections to the cross section of e^+ e^- -> t anti-b H^- and its charge-conjugate counterpart within the minimal supersymmetric extension of the Standard Model. This process is particularly important if m_t < m_H + m_b and root(s) < 2 m_H, so that t -> b H^+ and e^+ e^- -> H^+ H^- are not allowed kinematically. Large logarithmic corrections that arise in the on-mass-shell scheme of quark mass renormalization, especially from the t anti-b H^- Yukawa coupling for large values of tan(beta), are resummed by adopting the modified minimal-subtraction scheme, so that the convergence behavior of the perturbative expansion is improved. The inclusion of the QCD corrections leads to a significant reduction of the theoretical uncertainties due to scheme and scale dependences.

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          Deep-inelastic scattering beyond the leading order in asymptotically free gauge theories

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            Higgs-boson decay and the running mass

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              Searching for charged Higgs bosons at ∼(1/2–1-TeVe+e−colliders

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                Author and article information

                Journal
                28 May 2002
                2002-07-12
                Article
                10.1103/PhysRevD.66.054016
                hep-ph/0205312
                a66503b4-2ac2-4442-a9ca-68783f35cf49
                History
                Custom metadata
                CERN-TH/2002-095, DESY 02-057
                Phys.Rev.D66:054016,2002
                21 pages (Latex), 8 figures (Postscript); detailed discussion of scheme and scale dependences added
                hep-ph

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