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arXiv · hep-ph/9908265

The Quark Impact Factors

V. S. Fadin·R. Fiore·M. I. Kotsky·A. Papa
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Abstract

We calculate in the next-to-leading approximation the non-forward quark impact factors for both singlet and octet color representation in the $t$-channel. The integral representation of the octet impact factor in the general case of arbitrary space-time dimension and massive quark flavors is used to check the so-called "second bootstrap condition" for the gluon Reggeization at the next-to-leading logarithmic approximation in perturbative QCD. We find that it is satisfied for both helicity conserving and non-conserving parts. The integrations are then performed for the explicit calculation of the impact factors in the massless quark case.

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V. S. Fadin, R. Fiore, M. I. Kotsky, A. Papa. 1999-08-05. The Quark Impact Factors. https://doi.org/10.1103/physrevd.61.094006

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