Multigluon helicity amplitudes involving a quark loop

Gregory Mahlon

doi:10.1103/PhysRevD.49.4438

Multigluon helicity amplitudes involving a quark loop

Gregory Mahlon

Penn State Mont Alto

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

We apply the solution to the recursion relation for the double-off-shell quark current to the problem of computing one-loop amplitudes with an arbitrary number of gluons. We are able to compute amplitudes for photon-gluon scattering, electron-positron annihilation to gluons, and gluon-gluon scattering via a quark loop in the case of like-helicity gluons. In addition, we present the result for the one-loop gluon-gluon scattering amplitude when one of the gluons has opposite helicity from the others.

Original language	English (US)
Pages (from-to)	4438-4453
Number of pages	16
Journal	Physical Review D
Volume	49
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.49.4438
State	Published - 1994

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.49.4438

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AB - We apply the solution to the recursion relation for the double-off-shell quark current to the problem of computing one-loop amplitudes with an arbitrary number of gluons. We are able to compute amplitudes for photon-gluon scattering, electron-positron annihilation to gluons, and gluon-gluon scattering via a quark loop in the case of like-helicity gluons. In addition, we present the result for the one-loop gluon-gluon scattering amplitude when one of the gluons has opposite helicity from the others.

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