Strange Quark Mass from Pseudoscalar Sum Rule with O(alpha_s^4) Accuracy
| dc.creator | Chetyrkin, K. G. | |
| dc.creator | Khodjamirian, A. | |
| dc.date | 2005-12-22 | |
| dc.date | 2006-02-16 | |
| dc.date.accessioned | 2026-07-07T10:29:49Z | |
| dc.date.available | 2026-07-07T10:29:49Z | |
| dc.description | We include the new, five-loop, O(alpha_s^4) correction into the QCD sum rule used for the s-quark mass determination. The pseudoscalar Borel sum rule is taken as a study case. The OPE for the correlation function with N^4LO, O(alpha_s^4) accuracy in the perturbative part, and with dimension <= 6 operators reveals a good convergence. We observe a significant improvement of stability of the sum rule with respect to the variation of the renormalization scale after including the O(alpha_s^4) correction. We obtain the interval m_s(2 GeV)=105 \pm 6 \pm 7 MeV, which exhibits about 2 MeV increase of the central value, if the O(alpha_s^4) terms are removed. | |
| dc.description | Few misprints corrected, version to appear in European Physics Journal C. 15 pages, the complete paper is also available via the www at http://www-ttp.physik.uni-karlsruhe.de/Preprints/ | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0512295 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0512295 | |
| dc.identifier | Eur.Phys.J.C46:721-728,2006 | |
| dc.identifier | doi:10.1140/epjc/s2006-02508-8 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177941 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Strange Quark Mass from Pseudoscalar Sum Rule with O(alpha_s^4) Accuracy | |
| dc.type | text |