Estimate of the three-loop contribution to the QCD static potential from renormalon cancellation
| dc.creator | Cvetic, Gorazd | |
| dc.date | 2003-09-23 | |
| dc.date | 2004-04-27 | |
| dc.date.accessioned | 2026-07-07T10:48:52Z | |
| dc.date.available | 2026-07-07T10:48:52Z | |
| dc.description | It had been known that the Borel transforms of the twice quark pole mass 2*mq and of the QCD q-barq static potential V(r) have leading infrared renormalons at b=1/2 such that they cancel in the sum. The renormalon residue of 2*mq had been determined with reasonably high precision from the known perturbative coefficients of the ratio mq/(bar mq), where (bar mq) is the barMS renormalon-free mass of the quark q. These values of the residues are used here to estimate the hitherto unknown part of the three-loop coefficient of the static potential V(r). Further, the method takes into account the fact that the ultrasoft energy regime contributions must be excluded from the analysis. In the b-barb quarkonium, aforementioned estimated part of the three-loop term turns out to give a contribution to the binding energy comparable to the nonpertubative contribution. | |
| dc.description | 8 pages, 4 eps-figures, revtex4; the version as it will appear in J.Phys.G.; the first paragraph, the paragraph containing Eqs.(31)-(32), and the last paragraph are new; some new references were added; numerical results are unchanged | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0309262 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0309262 | |
| dc.identifier | J.Phys.G30:863-872,2004 | |
| dc.identifier | doi:10.1088/0954-3899/30/7/003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/184030 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Estimate of the three-loop contribution to the QCD static potential from renormalon cancellation | |
| dc.type | text |