$\alpha_s(\mu)$ from $M_{\chi_{0c(0b)}}-M_{\eta_{c(b)}}$@N2LO
| Jazyk: | English |
|---|---|
| Přístupová URL adresa: | https://explore.openaire.eu/search/publication?articleId=od______4325::5fc34efc4fd27eedfc3cc700dddd9d2a https://hal.archives-ouvertes.fr/hal-01975375 |
| Přírůstkové číslo: | edsair.od......4325..5fc34efc4fd27eedfc3cc700dddd9d2a |
| Autor: | Narison, Stephan |
| Přispěvatelé: | Laboratoire Univers et Particules de Montpellier (LUPM), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
quark: mass
quarkonium: heavy sum rule: spectral strong interaction: coupling constant [PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat] quantum chromodynamics: sum rule [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] higher-order: 2 quarkonium: mass difference hadron: mass [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] quantum chromodynamics: perturbation theory: higher-order |
| Zdroj: | 21st High-Energy Physics International Conference in Quantum Chromodynamics 21st High-Energy Physics International Conference in Quantum Chromodynamics, Jul 2018, Montpellier, France |
| Popis: | International audience; This note complements and clarifies the results obtained in the original paper {\it QCD Parameters Correlations from Heavy Quarkonia} [1] where, here, we present a more detailed discussion of the \alpha_s-results obtained @ N2LO at two different subtraction scales \mu=2.85 and 9.50 GeV from the (pseudo)scalar heavy quarkonia mass-spliitings M_{\chi_{0c(0b)}}-M_{\eta_{c(b)}}. We obtain from the M_{\chi_{0c}}-M_{\eta_{c}} sum rule: \alpha_s(2.85)=0.262(9) --> \alpha_s(M_\tau)=0.318(15) --> \alpha_s(M_Z)=0.1183(19)(3) and from the M_{\chi_{0b}}-M_{\eta_{b}} one: \alpha_s(9.50)=0.180(8) --> \alpha_s(M_\tau)=0.312(27) --> \alpha_s(M_Z)=0.1175(32)(3), in complete agreement with the world average: \alpha_s(M_Z)=0.1181(11). |
| Databáze: | OpenAIRE |
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