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2008

The Gluon Distribution Function and Factorization in Feynman Gauge

Collins, J. C., Rogers, T. C.

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A complication in proving factorization theorems in Feynman gauge is that individual graphs give a super-leading power of the hard scale when all the gluons inducing the hard scattering are longitudinally polarized.

With the aid of an example in gluon-mediated deep inelastic scattering, we show that, although the super-leading terms cancel after a sum over graphs, there is a residual non-zero leading term from longitudinally polarized gluons.
This is due to the non-zero transverse momenta of the gluons in the target.
The non-cancellation, due to the non-Abelian property of the gauge group, is necessary to obtain the correct form of the gluon distribution function as a gauge-invariant matrix element.

The Gluon Distribution Function and Factorization in Feynman Gauge · Around

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Then

S. J. Brodsky, D. S. Hwang and I. Schmidt, Phys. Lett. B 530
2002
Later among the works it cites.
J.C. Collins, Phys. Rev. D 65
Original
2002
Later among the works it cites.
D. Binosi and L. Theussl, Comput. Phys. Commun. 161
2004
Later among the works it cites.
C. Ewerz, A. von Manteuffel and O. Nachtmann, Phys. Rev. D 77
Original
2008
Closest in time.
J. C. Collins, T. C. Rogers and A. M. Stasto, Phys. Rev. D 77
Original
2008
Closest in time.

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