Next-to-leading-logarithmic QCD Corrections to the Cross Section sigma(e+e- to t bar t H) at 500 GeV
| dc.creator | Farrell, C. | |
| dc.creator | Hoang, A. H. | |
| dc.date | 2006-04-19 | |
| dc.date | 2006-07-12 | |
| dc.date.accessioned | 2026-07-07T10:45:04Z | |
| dc.date.available | 2026-07-07T10:45:04Z | |
| dc.description | We determine the next-to-leading logarithmic (NLL) QCD corrections to the cross section sigma(e+e- to t bar t H) for center-of-mass energies up to 500 GeV. The dynamics is dominated by nonrelativistic effects, and the summation of terms singular in the relative t bar t velocity is mandatory to all orders in the strong coupling constant alpha_s using an effective theory. The summations lead to an enhancement of the tree level predictions by about a factor of two and are important for the determination of the top Yukawa coupling. We also study the impact of polarization of the electron-positron beams and provide a fast approximation formula for the known O(alpha_s) QCD fixed-order prediction. | |
| dc.description | 18 pages, 3 tables, 5 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0604166 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0604166 | |
| dc.identifier | Phys.Rev.D74:014008,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.74.014008 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182809 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Next-to-leading-logarithmic QCD Corrections to the Cross Section sigma(e+e- to t bar t H) at 500 GeV | |
| dc.type | text |