Electroweak supersymmetric effects on high energy unpolarized and polarized single top production at LHC

Abstract

We consider various processes of single top production at LHC in the theoretical framework of the MSSM and examine the role of the supersymmetric electroweak one-loop corrections in a special moderately light SUSY scenario, in an initial parton-pair c.m. high energy range where a logarithmic asymptotic expansion of Sudakov type can be used. We show that the electroweak virtual effects are systematically large, definitely beyond the relative ten percent size, particularly for a final $t{H}^{-}$ pair where a special enhancement is present. We show then in a qualitative way the kind of precision tests of the model that would be obtainable from accurate measurements of the energy distributions of the various cross sections and of the top polarization asymmetries.

arXiv comment30 pages, 9 figures

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• The Left-Right asymmetry of top quarks in associated top-charged Higgs bosons at the LHC as a probe of the tan$\beta$ parameter
• Remarkable virtual SUSY effects in $W^{\pm }$ production at high energy hadron colliders
• Split Supersymmetry at the Logarithmic Test of Future Colliders
• Single production of charged gauge bosons from little Higgs models in association with top quark at the $LHC$
• Strong and Electro-Weak Supersymmetric Corrections to Single Top Processes at the Large Hadron Collider
• Supersymmetric structure of electroweak Sudakov corrections
• A peculiar property of SUSY amplitudes at high energy
• Yukawa enhanced electroweak corrections at high energy in the MSSM
• One-loop electroweak effects on stop-chargino production at LHC
• Phenomenology of the Higgs at the hadron colliders: from the Standard Model to Supersymmetry
• Sudakov Expansions and Top Quark Physics at LHC