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Soft-gluon resummation in quark-vector boson vertex at high energy

On-mass-shell case

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Abstract.

Resummation of the soft-gluon radiative corrections for the quark-vector boson vertex is performed within the path-integral (world-line) approach. The leading-order expression for the vacuum-averaged Wilson integral for an arbitrary gauge field is found in n-dimensional space-time. The cusp anomalous dimension of the color non-singlet Sudakov form factor of on-mass-shell quark is calculated in an arbitrary covariant gauge in the one-loop order, and the leading double-logarithmic asymptotical behavior is obtained from the corresponding evolution equation.

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Authors and Affiliations

  1. Dipartimento di Fisica, Università di Cagliari and INFN Sezione di Cagliari, C.P. 170, I-90142, Monserrato (CA), Italy

    I. O. Cherednikov

  2. Joint Institute for Nuclear Research, BLTP JINR, RU-141980, Dubna, Russian Federation

    I. O. Cherednikov

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  1. I. O. Cherednikov
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Correspondence to I. O. Cherednikov.

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Cherednikov, I.O. Soft-gluon resummation in quark-vector boson vertex at high energy. Eur. Phys. J. A 23, 501–506 (2005). https://doi.org/10.1140/epja/i2004-10117-6

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  • DOI: https://doi.org/10.1140/epja/i2004-10117-6

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