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Spectator interactions and theK-factor in the Drell-Yan process

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Zeitschrift für Physik C Particles and Fields

Abstract

The precise value of theO(α s perturbative QCD correction to the Drell-Yan cross-section seems to depend on the calculational procedure. We show how this ambiguity is removed when proper account is taken of the additional interactions involving spectator quarks. Explicit calculations in the scalar quark model reveal that the important contributions come from values of the gluon momentum that are very soft.

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Authors and Affiliations

  1. Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, CB3 9EW, Cambridge, UK

    P. V. Landshoff & W. J. Stirling

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  1. P. V. Landshoff
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  2. W. J. Stirling
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Landshoff, P.V., Stirling, W.J. Spectator interactions and theK-factor in the Drell-Yan process. Z. Phys. C - Particles and Fields 14, 251–256 (1982). https://doi.org/10.1007/BF01571823

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  • DOI: https://doi.org/10.1007/BF01571823

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