Next-to-leading order Calculation of a Fragmentation Function in a Light-Cone Gauge
| dc.creator | Lee, Jungil | |
| dc.date | 2000-09-10 | |
| dc.date.accessioned | 2026-07-07T03:42:34Z | |
| dc.date.available | 2026-07-07T03:42:34Z | |
| dc.description | Next-to-leading order corrections to fragmentation functions in a light-cone gauge are discussed. This gauge simplifies the calculation by eliminating many Feynman diagrams at the expense of introducing spurious poles in loop integrals. As an application, the short-distance coefficients for the color-octet $^3S_1$ term in the fragmentation function for a gluon to split into polarized heavy quarkonium states are re-calculated to order $α_s^2$. We show that the ill-defined spurious poles cancel and the appropriate prescriptions for the remaining spurious poles can be determined by calculating a subset of the diagrams in the Feynman gauge. Our answer agrees with the recent calculation of Braaten and Lee in the Feynman gauge, but disagrees with another previous calculation. | |
| dc.description | 20 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0009111 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0009111 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/39940 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Next-to-leading order Calculation of a Fragmentation Function in a Light-Cone Gauge | |
| dc.type | text |