Multipole amplitudes in parity-changing one-photon transitions of charmonium

Sebastian, K. J.; Grotch, H.; Ridener, F. L.

doi:10.1103/physrevd.45.3163

Cited by 32 publications

(26 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is also rather sensitive to any charm quark anomalous magnetic moment. Some details are worked out in [54], where they find a value (setting κ c = 0) M 2 (0)/E 1 (0) ∼ −0.06. Our data is unfortunately not sufficiently accurate to discriminate on this level -we outlined earlier in the text some possible improvements to the calculation to remedy this.…”

Section: Discussionmentioning

confidence: 99%

Radiative transitions in charmonium from lattice QCD

2006

View full text Add to dashboard Cite

Radiative transitions between charmonium states offer an insight into the internal structure of heavy-quark bound states within QCD. We compute, for the first time within lattice QCD, the transition form-factors of various multipolarities between the lightest few charmonium states. In addition, we compute the experimentally unobservable, but physically interesting vector form-factors of the ηc, J/ψ and χc0.To this end we apply an ambitious combination of lattice techniques, computing three-point functions with heavy domain wall fermions on an anisotropic lattice within the quenched approximation.With an anisotropy ξ = 3 at as ∼ 0.1 fm we find a reasonable gross spectrum and a hyperfine splitting ∼ 90MeV, which compares favourably with other improved actions.In general, after extrapolation of lattice data at non-zero Q 2 to the photopoint, our results agree within errors with all well measured experimental values. Furthermore, results are compared with the expectations of simple quark models where we find that many features are in agreement; beyond this we propose the possibility of constraining such models using our extracted values of physically unobservable quantities such as the J/ψ quadrupole moment.We conclude that our methods are successful and propose to apply them to the problem of radiative transitions involving hybrid mesons, with the eventual goal of predicting hybrid meson photoproduction rates at the GlueX experiment.

show abstract

Section: Discussionmentioning

confidence: 99%

Radiative transitions in charmonium from lattice QCD

2006

View full text Add to dashboard Cite

show abstract

“…-The fractional magnetic quadrupole amplitude a 2 M2/E1 is related to the anomalous magnetic moment of the c quark κ c . A relativistic calculation yields [76] …”

Section: Angular Distributions In the Radiative Decays Of The χ C Statesmentioning

confidence: 99%

Charmonium spectroscopy

BETTONI¹,

Calabrese²

2005

Progress in Particle and Nuclear Physics

View full text Add to dashboard Cite

show abstract

“…For the second type, 3 S 1 − 3 D 1 mixing is related to the properties of ψ , ψ [3][4][5][6][7][8][9]. For example, ψ (ψ(3770)) is assumed to be a pure 3 D 1 state, but the predicted DD width based on this assumption is not consistent with experimental results.…”

Section: Introductionmentioning

confidence: 98%

Separation of different wave components in the Bethe–Salpeter wave function

Chen

2011

Pramana - J Phys

View full text Add to dashboard Cite

The scalar products of polarization tensor and unit vectors are presented explicitly in spherical coordinate system expanded in terms of spherical harmonic functions. By applying the obtained formulae, different wave components in the Salpeter wave function can be shown explicitly, and the results are consistent with the results obtained by L-S coupling analysis. The cancelation formula is given, by which the terms with pure L = J + 1 wave components in the Salpeter wave function for the bound state with η P = (−1) J can be obtained by separating the L = J − 1 wave components from mixing terms. This separation provides the basis for studying higher-order contributions from the coupling of L = J − 1 and J + 1 wave states, and for solving the Salpeter equation exactly without approximation.

show abstract

Multipole amplitudes in parity-changing one-photon transitions of charmonium

Cited by 32 publications

References 15 publications

Radiative transitions in charmonium from lattice QCD

Radiative transitions in charmonium from lattice QCD

Charmonium spectroscopy

Separation of different wave components in the Bethe–Salpeter wave function

Contact Info

Product

Resources

About