Anomalous dimensions of transverse-momentum dependent parton distribution functions
| dc.creator | Stefanis, N. G. | |
| dc.creator | Cherednikov, I. O. | |
| dc.date | 2008-08-25 | |
| dc.date.accessioned | 2026-07-07T09:58:17Z | |
| dc.date.available | 2026-07-07T09:58:17Z | |
| dc.description | We discuss recent developments in the understanding of gauge-invariant transverse-momentum dependent (TMD) parton-distribution functions (PDF). We compute the leading-order $\overline{\text{MS}\vphantom{^1}}$-scheme anomalous dimension of such a quantity in the light-cone gauge and show that it receives a contribution that can be associated with a cusp obstruction at transverse light-cone infinity. This anomalous dimension is intimately related to expectation values composed of fields and eikonal factors along a cusped contour and is absent in covariant gauges. The implications of these findings are addressed and a modified definition of TMD PDFs is proposed. | |
| dc.description | 7 pages, 2 figures. Invited talk presented by the first author at International Workshop "Hadron Structure and QCD" (HSQCD'2008), June 30 - July 4, 2008, Gatchina, Russia (hsqcd.cls supplied) | |
| dc.identifier | https://arxiv.org/abs/0808.3390 | |
| dc.identifier | http://arxiv.org/abs/0808.3390 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/167660 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Anomalous dimensions of transverse-momentum dependent parton distribution functions | |
| dc.type | text |