Erratum: Transition form factors and mixing of pseudoscalar mesons from anomaly sum rule [Phys. Rev. D<b>87</b>, 036013 (2013)]

Klopot, Yaroslav; Oganesian, A. G.; Teryaev, Oleg

doi:10.1103/physrevd.88.059902

Cited by 19 publications

(31 citation statements)

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“…While for vector and tensor form factors we foresee good performance of our PA method, for a scalar form factor with an abrupt threshold offset, the range of applicability within the time-like region will be more limited. Parameterizations existent in literature which would be suitable to be compared our method with can be found in [26,27,[29][30][31][32][33][34][35][36][37][38].…”

Section: Padé Approximants In the Time-like Regionmentioning

confidence: 99%

η′transition form factor from space- and timelike experimental data

Escribano¹,

Gonzàlez-Solís²,

Masjuan³

et al. 2016

Phys. Rev. D

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The η transition form factor is reanalyzed in view of the recent BESIII first observation of the Dalitz decay η → γe + e − in both space-and time-like regions at low and intermediate energies using the Padé approximants method. The present analysis provides a suitable parameterization for reproducing the measured form factor in the whole energy region and allows to extract the corresponding low-energy parameters together with a prediction of its values at the origin, related to Γ η →γγ , and the asymptotic limit. The η-η mixing is reassessed within a mixing scheme compatible with the large-N c chiral perturbation theory at next-to-leading order, with particular attention to the OZI-rule-violating parameters. The J/ψ, Z → η ( ) γ decays are also considered and predictions reported.

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Section: Padé Approximants In the Time-like Regionmentioning

confidence: 99%

η′transition form factor from space- and timelike experimental data

Escribano¹,

Gonzàlez-Solís²,

Masjuan³

et al. 2016

Phys. Rev. D

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“…[41,42], albeit in our case the two maxima are much closer to x = 0.5. In fact, in the nlNJL model this feature arises from the term F (23)(24)(25)], which is a genuine nonlocal contribution. Now, by comparing the curves in the different panels of Fig.…”

Section: Distribution Amplitudes and Transition Form Factors In mentioning

confidence: 99%

“…[23,24], where the TFFs are analyzed in a model independent way through the usage of rational Padé approximants, in Ref. [25], where the anomaly sum rule is used, and in…”

Section: Introductionmentioning

confidence: 99%

η−γ and η′−γ transition form factors in a nonlocal NJL model

2017

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We study the η and η ′ distribution amplitudes (DAs) in the context of a nonlocal SU(3) L ⊗ SU(3) R chiral quark model. The corresponding Lagrangian allows to reproduce the phenomenological values of pseudoscalar meson masses and decay constants, as well as the momentum dependence of the quark propagator arising from lattice calculations. It is found that the obtained DAs have two symmetric maxima, which arise from new contributions generated by the nonlocal character of the interactions. These DAs are then applied to the calculation of the η-γ and η ′ -γ transition form factors. Implications of our results regarding higher twist corrections and/or contributions to the transition form factors originated by gluon-gluon components in the η and η ′ mesons are discussed.

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“…Our main goal is to predict the spectra and the branching ratio of the single and double Dalitz decays we are interested in. Other different parameterizations existing in the literature are based on resonance chiral theory [7,8] and on dispersive techniques [9,10], among others [11,12,13,14,15,16,17,18].…”

Section: Introductionmentioning

confidence: 99%

Single and double Dalitz decays of pi^0, eta and eta' through rational approximants

Gonzàlez-Solís¹

2016

Proceedings of the 8th International Workshop on Chiral Dynamics — PoS(CD15)

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Erratum: Transition form factors and mixing of pseudoscalar mesons from anomaly sum rule [Phys. Rev. D87, 036013 (2013)]

Cited by 19 publications

References 0 publications

η′transition form factor from space- and timelike experimental data

η′transition form factor from space- and timelike experimental data

η−γ and η′−γ transition form factors in a nonlocal NJL model

Single and double Dalitz decays of pi^0, eta and eta' through rational approximants

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