Decoupling heavy particles simultaneously
| dc.contributor.author | Crewther R.J. | |
| dc.contributor.author | Bass S.D. | |
| dc.contributor.author | Steffens F.M. | |
| dc.contributor.author | Thomas A.W. | |
| dc.date.accessioned | 2024-03-13T01:44:07Z | |
| dc.date.available | 2024-03-13T01:44:07Z | |
| dc.date.issued | 2005 | |
| dc.description.abstract | The renormalization group is extended to cases where several heavy particles are decoupled at the same time. This involves large logarithms which are scale-invariant and so cannot be eliminated by a change of renormalization scheme. A set of scale-invariant running couplings, one for each heavy particle, is constructed without reference to intermediate thresholds. The entire heavy-quark correction to the axial charge of the weak neutral current is derived to next-to-leading order, and checked in leading order by evaluating diagrams explicitly. The mechanism for cancelling contributions from the top and bottom quarks in the equal-mass limit is surprisingly non-trivial. © 2004 Elsevier B.V. All rights reserved. | |
| dc.description.firstpage | 159 | |
| dc.description.issuenumber | SPEC. ISS. | |
| dc.description.lastpage | 164 | |
| dc.description.volume | 141 | |
| dc.identifier.doi | 10.1016/j.nuclphysbps.2004.12.024 | |
| dc.identifier.issn | 0920-5632 | |
| dc.identifier.uri | https://dspace.mackenzie.br/handle/10899/37879 | |
| dc.relation.ispartof | Nuclear Physics B - Proceedings Supplements | |
| dc.rights | Acesso Restrito | |
| dc.title | Decoupling heavy particles simultaneously | |
| dc.type | Artigo | |
| local.scopus.citations | 4 | |
| local.scopus.eid | 2-s2.0-12144252467 | |
| local.scopus.updated | 2024-05-01 | |
| local.scopus.url | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=12144252467&origin=inward |