LOOKING AT THE QCD CORRECTIONS FOR LARGE $M_t$: AN EFFECTIVE LAGRANGIAN POINT OF VIEW
| dc.creator | Peris, S. | |
| dc.date | 1995-04-20 | |
| dc.date.accessioned | 2026-07-07T03:57:32Z | |
| dc.date.available | 2026-07-07T03:57:32Z | |
| dc.description | We discuss the QCD corrections to the large-$m_t$ electroweak contributions to $Δr$ and to the process $Z\to b \bar b$ as two of the most representative examples. This needs the construction of an effetive field theory below the top quark. We discuss the issue of what $μ$ scale is the appropriate one at every stage and argue that, while matching corrections do verify the simple prescription of taking $μ\simeq m_t$ in $α_s(μ)$, logarithmic (i.e. $\sim \log m_t$) corrections do not, and require the use of the running $α_s(μ)$ in the corresponding renormalization group equations. In particular we obtain the $α_s$ correction to the non-universal $\log m_t$ contribution to the $Zb\bar b$ vertex. | |
| dc.description | Latex with macro appended at the beginning of file. Talk given at the Ringberg Workshop ``Perspectives for electroweak interactions in $e^+e^-$ collisions", Ringberg Castle, Germany, February 5--8, 1995. To appear in the proceedings | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9504347 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9504347 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/45467 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | LOOKING AT THE QCD CORRECTIONS FOR LARGE $M_t$: AN EFFECTIVE LAGRANGIAN POINT OF VIEW | |
| dc.type | text |