Determination of Strong Coupling Constant from Inclusive Semileptonic Decays of Charmed Mesons

Abstract

Employing the heavy quark expansion model with the kinetic scheme, we evaluate ${\alpha }_S(m_c^2)$, the strong coupling constant at the charm quark mass $m_c$ with data on inclusive semileptonic decays of charmed mesons. Using the experimental values of semileptonic decay widths of the $D^0$ and the $D^{+}$, the value of ${\alpha }_s(m_c^2)$ is determined to be $0.445\pm 0.009\pm 0.114$, where the first uncertainty is experimental and the second systematic. This reported ${\alpha }_s(m_c^2)$ is in good agreement with the value of ${\alpha }_s(m_c^2)$ calculated by running ${\alpha }_S(m_Z^2)$ at the $Z^0$ boson mass $m_Z$ with the renormalization group evolution equation. In addition, values of ${\alpha }_s(m_c^2)$ obtained individually from each of the $D^0$, $D^{+}$, and $D_s^{+}$ mesons are found to be consistent being of the same origin.

arXiv comment6 pages, 2 figures. The paper is submitted to Chinese Physics C

References in corpus (39)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• QCD Predictions for Lepton Spectra in Inclusive Heavy Flavour Decays
• The three loop relation between the \bar {MS} and the pole quark masses
• Nonperturbative Corrections to Inclusive Beauty and Charm Decays: QCD versus Phenomenological Models
• Heavy Quark Effective Theory beyond Perturbation Theory: Renormalons, the Pole Mass and the Residual Mass Term
• The Pole Mass of The Heavy Quark. Perturbation Theory and Beyond
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Differential Distributions in Semileptonic Decays of the Heavy Flavors in QCD
• Version 3 of {\tt RunDec} and {\tt CRunDec}
• Flavor Physics in the Quark Sector
• Aspects Of Heavy Quark Theory
• Update of the ALEPH non-strange spectral functions from hadronic $\tau$ decays
• Precision determination of the CKM element Vcb
• Inclusive semileptonic B decays and the determination of |V_ub|
• Fit to Moments of Inclusive B->Xc lv and B-> Xs gamma Decay Distributions using Heavy Quark Expansions in the Kinetic Scheme
• Order 1/m_b^3 corrections to B\to X_c\ell\barνdecay and their implication for the measurement of \barΛand λ_1
• The strong coupling from the revised ALEPH data for hadronic $\tau$ decays
• High Power n of m_b in Beauty Widths and n=5 -> oo Limit
• Inclusive semileptonic fits, heavy quark masses, and V_cb
• Determination of the QCD Coupling from ALEPH $\tau$ Decay Data
• The Rule of Discarding $1/N_c$ in Inclusive Weak Decays. II
• Moments of semileptonic B decay distributions in the 1/m_b expansion
• Perturbative corrections to semileptonic b decay distributions
• Determination of the strong coupling constant from the inclusive jet cross section in ppbar collisions at sqrt(s)=1.96 TeV
• QCD Parameters Correlations from Heavy Quarkonia
• Distributions of leptons in decays of polarised heavy quarks
• Third order corrections to the semi-leptonic \boldmath{$b\to c$} and the muon decays
• Measurement of angular correlations of jets at sqrt(s)=1.96 TeV and determination of the strong coupling at high momentum transfers
• Inclusive-jet photoproduction at HERA and determination of alphas
• B semileptonic moments at NNLO
• Measurement of the strong coupling alpha_S from the three-jet rate in e+e- - annihilation using JADE data
• Lepton energy moments in semileptonic charm decays
• The Kinetic Heavy Quark Mass to Three Loops
• The strong coupling from $e^{+}{e}^{-}\to$ hadrons below charm
• On the relation between the $\overline{\mathrm{MS}}$ and the kinetic mass of heavy quarks
• Revisiting Inclusive Decay Widths of Charmed Mesons
• Hadronic mass and q^2 moments of charmless semileptonic B decay distributions
• Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons
• Measurement of the absolute branching fraction of inclusive semielectronic $D_s^{+}$ decays

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