The Two-loop Anomalous Dimension Matrix for Soft Gluon Exchange
| dc.creator | Aybat, S. Mert | |
| dc.creator | Dixon, Lance J. | |
| dc.creator | Sterman, George | |
| dc.date | 2006-06-23 | |
| dc.date.accessioned | 2026-07-07T13:00:24Z | |
| dc.date.available | 2026-07-07T13:00:24Z | |
| dc.description | The resummation of soft gluon exchange for QCD hard scattering requires a matrix of anomalous dimensions. We compute this matrix directly for arbitrary 2 to n massless processes for the first time at two loops. Using color generator notation, we show that it is proportional to the one-loop matrix. This result reproduces all pole terms in dimensional regularization of the explicit calculations of massless 2 to 2 amplitudes in the literature, and it predicts all poles at next-to-next-to-leading order in any 2 to n process that has been computed at next-to-leading order. The proportionality of the one- and two-loop matrices makes possible the resummation in closed form of the next-to-next-to-leading logarithms and poles in dimensional regularization for the 2 to n processes. | |
| dc.description | 5 pages, 1 figure, revtex | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0606254 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0606254 | |
| dc.identifier | Phys.Rev.Lett.97:072001,2006 | |
| dc.identifier | doi:10.1103/PhysRevLett.97.072001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/225828 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | The Two-loop Anomalous Dimension Matrix for Soft Gluon Exchange | |
| dc.type | text |