Some hadronic parameters of charmonia in ${\mathbf{N}}_{\text{f}}=2$ lattice QCD

Abstract

The phenomenology of leptonic decays of quarkonia holds many interesting features: for instance, it can establish constraints on scenarios beyond the Standard Model with the Higgs sector enriched by a light CP-odd state. In the following paper, we report on a two-flavor lattice QCD study of the ${\eta }_c$ and $J/\psi$ decay constants, $f_{{\eta }_c}$ and $f_{J\psi }$. We also examine some properties of the first radial excitation ${\eta }_c(2S)$ and $\psi (2S)$.

arXiv comment13 pages, 67 gigures. arXiv admin note: text overlap with arXiv:1711.05661

References in corpus (24)

• Non-perturbative O(a) improvement of lattice QCD
• Toward the excited meson spectrum of dynamical QCD
• The strange quark mass and Lambda parameter of two flavor QCD
• Further results on O(a) improved lattice QCD to one-loop order of perturbation theory
• Schwarz-preconditioned HMC algorithm for two-flavour lattice QCD
• Update: Precision D_s decay constant from full lattice QCD using very fine lattices
• Decay width of light quark hybrid meson from the lattice
• Precision tests of the J/ψ from full lattice QCD: mass, leptonic width and radiative decay rate to η_c
• D Pi scattering and D meson resonances from lattice QCD
• Lattice QCD and QCD Sum Rule determination of the decay constants of eta_c, J/psi and hc states
• Hadrons with a heavy colour-adjoint particle
• The ${\rm Y}$ and ${{\rm Y}}^{\prime }$ Leptonic Widths, $a_{\mu }^b$ and $m_b$ from full lattice QCD
• Solution of the Dirac equation in lattice QCD using a domain decomposition method
• Deflation acceleration of lattice QCD simulations
• Non-perturbative renormalization of the axial current with dynamical Wilson fermions
• Non-perturbative results for the coefficients b_m and b_a-b_p in O(a) improved lattice QCD
• Non-perturbative improvement of the axial current for dynamical Wilson fermions
• Prediction of the $D_s^{\ast }$ width from a calculation of its radiative decay in full lattice QCD
• D-meson decay constants and a check of factorization in non-leptonic B-decays
• Hunting a light CP-odd non-standard Higgs boson through its tauonic decay at a (Super) B factory
• On cutoff effects in lattice QCD from short to long distances
• Vector and scalar charmonium resonances with lattice QCD
• Lattice QCD estimate of the ${\eta }_c(2S)\to J/\psi \gamma$ decay rate
• Running electromagnetic coupling constant: low energy normalization and the value at M_Z

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• Charmonium properties from lattice QCD + QED: hyperfine splitting, $J/\psi$ leptonic width, charm quark mass and $a_{\mu }^c$
• On the generalised eigenvalue method and its relation to Prony and generalised pencil of function methods
• Charming New $B$-Physics
• $|V_{ub}|$ determination and testing of lepton flavour universality in semileptonic $B_c\to D^{(\ast )}$ decays
• Prospects for observing the ${\eta }_t$ $\to$ $W^{+}{W}^{-}$ decay at the HL-LHC