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Electroweak Sudakov logarithms and real gauge-boson radiation in the TeV region

  • Regular Article - Theoretical Physics
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Abstract

Electroweak radiative corrections give rise to large negative, double-logarithmically enhanced corrections in the TeV region. These are partly compensated by real radiation and, moreover, affected by selecting isospin-non-invariant external states. We investigate the impact of real gauge boson radiation more quantitatively by considering different restricted final state configurations. We consider successively a massive abelian gauge theory, a spontaneously broken SU(2) theory and the electroweak Standard Model. We find that details of the choice of the phase space cuts, in particular whether a fraction of collinear and soft radiation is included, have a strong impact on the relative amount of real and virtual corrections.

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Authors and Affiliations

  1. Institut für Theoretische Teilchenphysik, Universität Karlsruhe, 76128, Karlsruhe, Germany

    G. Bell, J. H. Kühn & J. Rittinger

  2. Institute for Theoretical Physics, University of Bern, 3012, Bern, Switzerland

    G. Bell

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  1. G. Bell
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  2. J. H. Kühn
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  3. J. Rittinger
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Correspondence to G. Bell.

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Bell, G., Kühn, J.H. & Rittinger, J. Electroweak Sudakov logarithms and real gauge-boson radiation in the TeV region. Eur. Phys. J. C 70, 659–671 (2010). https://doi.org/10.1140/epjc/s10052-010-1489-x

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  • DOI: https://doi.org/10.1140/epjc/s10052-010-1489-x

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