Lattice QCD and QCD Sum Rule determination of the decay constants of eta_c, J/psi and hc states

Abstract

We compute the decay constants of the lowest ccbar-states with quantum numbers J(PC)=0(-+) [eta_c], 1(--) [J/psi], and 1(+-) [hc] by using lattice QCD and QCD sum rules. We consider the coupling of J/psi to both the vector and tensor currents. Lattice QCD results are obtained from the unquenched (Nf=2) simulations using twisted mass QCD at four lattice spacings, allowing us to take the continuum limit. On the QCD sum rule side we use the moment sum rules. The results are then used to discuss the rate of eta_c --> gamma gamma decay, and to comment on the factorization in B --> X K decays, with X being either eta_c or J/psi.

25 pages (published version)

References in corpus (51)

• Heavy quarkonium: progress, puzzles, and opportunities
• New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
• The New Heavy Mesons: A Status Report
• Charmonium
• Chirally improving Wilson fermions - I. O(a) improvement
• High-Precision c and b Masses, and QCD Coupling from Current-Current Correlators in Lattice and Continuum QCD
• Excited and exotic charmonium spectroscopy from lattice QCD
• Dynamical Twisted Mass Fermions with Light Quarks: Simulation and Analysis Details
• Update: Precision D_s decay constant from full lattice QCD using very fine lattices
• Gluon condensate in charmonium sum rules with 3-loop corrections
• Dynamical Twisted Mass Fermions with Light Quarks
• Precision tests of the J/ψ from full lattice QCD: mass, leptonic width and radiative decay rate to η_c
• Gluon Condensates and m_{c,b} from QCD-Moments and their ratios to Order alpha_s^3 and <G^4>
• Order-v^4 Corrections to S-wave Quarkonium Decay
• High-Precision Charm-Quark Mass and QCD Coupling from Current-Current Correlators in Lattice and Continuum QCD
• Non-perturbative renormalization of quark bilinear operators with Nf=2 (tmQCD) Wilson fermions and the tree-level improved gauge action
• Standard Model predictions for B -> Kll with form factors from lattice QCD
• Dynamic Properties of Charmonium
• Two-Loop Gluon-Condensate Contributions To Heavy-Quark Current Correlators: Exact Results And Approximations
• Non-Leptonic Weak Decays of B Mesons
• Average up/down, strange and charm quark masses with Nf=2 twisted mass lattice QCD
• Two-photon decay rates of heavy quarkonia in the relativistic quark model
• Two Photon Decays of Charmonia from Lattice QCD
• Lattice QCD study of the radiative decays $J/\psi \to {\eta }_c\gamma$ and $h_c\to {\eta }_c\gamma$
• B, Bs -> K form factors: an update of light-cone sum rule results
• Theoretical estimate of the $D^{\ast }\to D\pi$ decay rate
• The effective continuum threshold in dispersive sum rules
• Relativistic two-photon and two-gluon decay rates of heavy quarkonia
• Measurement of the gamma gamma* --> eta_c transition form factor
• Renormalization constants of local operators for Wilson type improved fermions
• Extraction of ground-state decay constant from dispersive sum rules: QCD vs potential models
• Annihilation Rate of Heavy $0^{-+}$ Quarkonium in Relativistic Salpeter Method
• Investigation of heavy-heavy pseudoscalar mesons in thermal QCD Sum Rules
• Electromagnetic quarkonium decays at order v^7
• Accuracy of bound-state form factors extracted from dispersive sum rules
• A perturbative approach to the eta_c-gamma transition form factor
• Erratum: Order-v^4 corrections to S-wave quarkonium decay [Phys. Rev. D 66, 094011 (2002)]
• Tests of Two-Body Dirac Equation Wave Functions in the Decays of Quarkonium and Positronium into Two Photons
• Two-photon width of eta_c and eta'_c from Heavy-Quark Spin Symmetry
• $O({\alpha }_s{v}^2)$ correction to pseudoscalar quarkonium decay to two photons
• Pseuduscalar Heavy Quarkonium Decays With Both Relativistic and QCD Radiative Corrections
• On the significance of B-decays to radially excited D
• Thermal QCD Sum Rules Study of Vector Charmonium and Bottomonium States
• The Decay ${\eta }_c\to \gamma \gamma$ : A Test for Potential Models
• Di-electron and two-photon widths in charmonium
• Analysis of the heavy quarkonium states $h_c$ and $h_b$ with QCD sum rules
• η_b and η_c radiative decays in the Salpeter model with the AdS/QCD inspired potential
• Gluon distribution at very small x from C-even quarkonia production at the LHC
• The ${\gamma }^{\ast }{\gamma }^{\ast }\to {\eta }_c$ transition form factor
• Two Photon Width of eta_c (paper version)
• Form factors of ${\eta }_c$ in light front quark model

Cited by in corpus (91)

• Phenomenology of GeV-scale Heavy Neutral Leptons
• Hunting for ALPs with Lepton Flavor Violation
• Weak Decays of Doubly Heavy Baryons: the $1/2\to 1/2$ case
• Analysis of the $QQ\bar{Q}\bar{Q}$ tetraquark states with QCD sum rules
• Combined Explanations of the $b\to s{\mu }^{+}{\mu }^{-}$ and $b\to c{\tau }^{-}\bar{\nu }$ Anomalies: a General Model Analysis
• $Q\bar{Q}$ ($Q\in \{b,c\}$) spectroscopy using Cornell potential
• Strong decays of fully-charm tetraquarks into di-charmonia
• A frequentist analysis of three right-handed neutrinos with GAMBIT
• Charmonium properties from lattice QCD + QED: hyperfine splitting, $J/\psi$ leptonic width, charm quark mass and $a_{\mu }^c$
• Effective Majorana mass matrix from tau and pseudoscalar meson lepton number violating decays
• Long-lived Sterile Neutrinos at the LHC in Effective Field Theory
• Hadronic molecules in B decays
• Variational Analysis of Mass Spectra and Decay Constants for Ground State Pseudoscalar and Vector Mesons in Light-Front Quark Model
• Nonleptonic two-body decays of single heavy baryons ${\Lambda }_Q$, ${\Xi }_Q$, and ${\Omega }_Q$ $(Q=b,c)$ induced by $W$ emission in the covariant confined quark model
• Lepton Flavor Violation and Dilepton Tails at the LHC
• Analysis of the $Z_c(4200)$ as axial-vector molecule-like state
• Form factors of B, Bs -> eta, eta' and D, Ds -> eta, eta' transitions from QCD light-cone sum rules
• Lepton flavor violating decays of vector quarkonia and of the $Z$ boson
• Analysis of the strong decays of the $P_c(4312)$ as a pentaquark molecular state with QCD sum rules
• Lepton flavor violating quarkonium decays
• The decay width of the $Z_c(3900)$ as an axialvector tetraquark state in solid quark-hadron duality
• Self-consistency and covariance of light-front quark models: testing via $P$, $V$ and $A$ meson decay constants, and $P\to P$ weak transition form factors
• Analysis of the mass and width of the $Y(4274)$ as axialvector molecule-like state
• Analysis of the mass and width of the $X(4140)$ as axialvector tetraquark state
• Strong decays of the $Y(4660)$ as a vector tetraquark state in solid quark-hadron duality
• Mixing effects on 1S and 2S state heavy mesons in the light-front quark model
• Two Photon Transition Form Factor of $\bar{c}c$ Quarkonia
• ${\rm Y}$ and $\psi$ leptonic decays as probes of solutions to the $R_D^{(\ast )}$ puzzle
• Charmless two-body anti-triplet $b$-baryon decays
• Fragmentation fractions of two-body b-baryon decays
• Partial decay widths of $P_c(4312)$ as a $\bar{D}{\Sigma }_c$ molecular state
• Exclusive decays $J/\psi \to D_{(s)}^{(\ast )-}{\ell }^{+}{\nu }_{\ell }$ in a covariant constituent quark model with infrared confinement
• Pentaquarks from intrinsic charms in ${\Lambda }_b$ decays
• Covariant Light-Front Approach for $B_c$ Decays into Charmonium: Implications on Form Factors and Branching Ratios
• Hidden-charm pentaquark states through the current algebra: From their productions to decays
• Charming New $B$-Physics
• Weak Decays of $J/\psi$ and ${\rm Y}(1S)$
• Decay behaviors of the fully-bottom and fully-charm tetraquark states
• Lattice QCD estimate of the ${\eta }_c(2S)\to J/\psi \gamma$ decay rate
• Long-lived neutral fermions at the DUNE near detector
• Charmful two-body anti-triplet $b$-baryon decays
• Decipher the width of the $X(3872)$ via the QCD sum rules
• Two-particle contributions and nonlocal effects in the QCD sum rules for the axialvector tetraquark candidate $Z_c(3900)$
• Light-front wavefunctions of mesons by design
• Decay properties of $P_c$ states through the Fierz rearrangement
• The hadronic coupling constants of the lowest hidden-charm pentaquark state with the QCD sum rules in rigorous quark-hadron duality
• Renormalisation of the tensor current in lattice QCD and the $J/\psi$ tensor decay constant
• Revisit the $X(4274)$ as the axialvector tetraquark state
• Indirect constraints on lepton-flavour-violating quarkonium decays
• Assignments of the $X(4140)$, $X(4500)$, $X(4630)$ and $X(4685)$ based on the QCD sum rules
• Exclusive nonleptonic Bc-meson decays to S-wave charmonium states
• The $\rho (1S,2S)$, $\psi (1S,2S)$, ${\rm Y}(1S,2S)$ and ${\psi }_t(1S,2S)$ mesons in a double pole QCD Sum Rule
• Lattice QCD study of the elastic and transition form factors of charmed baryons
• Analysis of strong decays of the $Z_c(4600)$ with the QCD sum rules
• Branching fractions of $B_{(c)}$ decays involving $J/\psi$ and $X(3872)$
• Analysis of the mass and width of the $X^{\ast }(3860)$ with QCD sum rules
• The decay widths of the $Z_{cs}(3985/4000)$ based on rigorous quark-hadron duality
• Some hadronic parameters of charmonia in ${\mathbf{N}}_{\text{f}}=2$ lattice QCD
• New gauge boson Z' and lepton flavor violating decays and production of vector mesons
• The strange cousin of the $Z_c(4020/4025)$ as tetraquark state
• Hadronic molecules with four charm or beauty quarks
• Systematic analysis of the form factors of $B_c\to {\eta }_c$, $J/\psi$ and corresponding weak decays
• Decay properties of the $Z_c(3900)$ through the Fierz rearrangement
• Revisiting lifetimes of doubly charmed baryons
• Decay properties of the $X(3872)$ through the Fierz rearrangement
• The strong vertices of charmed mesons $D$, $D^{\ast }$ and charmonia $J/\psi$, ${\eta }_c$
• Decay Properties of Conventional and Hybrid Charmonium Mesons
• The Decay constants of $B_c(nS)$ and $B_c^{\ast }(nS)$
• Seeking the CP-odd Higgs via $h\to {\eta }_{c,b}{\ell }^{+}{\ell }^{-}$
• $B_c\to J/\psi$ helicity form factors and the $B_c^{+}\to J/\psi +(P,V,{\ell }^{+}{\nu }_{\ell })$ decays
• Revisiting the production of $J/\psi +{\eta }_c$ via the $e^{+}{e}^{-}$ annihilation within the QCD light-cone sum rules
• Spectroscopy of excited quarkonium states in the light-front quark model
• On the impact of heavy meson production spectra on searches for heavy neutral leptons
• Strong decays of the vector tetraquark states with the masses about $4.5\mathrm{GeV}$ via the QCD sum rules
• Determining the effective Wilson coefficient $a_2$ in terms of $BR(B_s\to {\eta }_c\varphi )$ and evaluating $BR(B_s\to {\eta }_c{f}_0(980))$
• Strong decays of the fully-charm tetraquark states with explicit P-waves via the QCD sum rules
• Correlated study on some $B_c\to P$ and $B_c\to S$ wave channels in light of new inputs
• Charmful two-body ${\Omega }_b$ decays in the light-front quark model
• Strong decays of the $P_c(4312)$ and its isospin cousin via the QCD sum rules
• Three-body strong decays of the $Y(4230)$ via the light-cone QCD sum rules
• The strong coupling $g_{XJ/\psi \varphi }$ of $X(4700)\to J/\psi \varphi$ in the light-cone sum rules
• Systematic analysis of the form factors of $B_c$ to $P$-wave charmonia and corresponding weak decays
• Strong decays of the $P_{cs}(4338)$ and its high isospin cousin via the QCD sum rules
• Hidden charm ${\mathcal{P}}_{cs}(4338{)}^0$ production in baryonic $B^{-}\to J/\psi \Lambda \bar{p}$ decay
• On the $D_s^{\ast }$ and charmonia leptonic decays
• Two-body strong decays of the hidden-charm tetraquark molecular states via the QCD sum rules
• Analysis of the form factors of $B_c\to D^{(\ast )}$, $D_s^{(\ast )}$ and their nonleptonic decays
• Advances in QCD sum rule calculations
• Revisiting lepton flavor violation: $\tau$ and meson decays
• Prospects for observing the ${\eta }_t$ $\to$ $W^{+}{W}^{-}$ decay at the HL-LHC
• Two-body strong decays of the pseudoscalar hidden-charm tetraquark states via the QCD sum rules