Empirical test of tensor meson dominance

Renner, B.

doi:10.1016/0370-2693(70)90359-x

Cited by 54 publications

(16 citation statements)

References 7 publications

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“…Again by assuming the decoupling of the f ′ 2 from the nucleon coupling, we can have [46] Table I, which is smaller than the values estimated by πN dispersion relations by an order of magnitude. It should also be noted that the values estimated by πN dispersion relations may be affected by the inclusion of other meson exchanges.…”

Section: Appendix: Tensor Meson Dominance and F 2 -Hadron Interac-tionsmentioning

confidence: 51%

“…The results are summarized in Table I. Note that the value estimated based on the tensor-meson dominance [46] is much smaller than the empirical values. (See Appendix for details.…”

Section: E F 2 Meson Exchangementioning

confidence: 87%

“…Let us first apply TMD to spinless particles [46,59]. The energy-momentum tensor between spinless particles can be written as…”

Section: Tensor Meson Dominancementioning

confidence: 99%

“…Here, for completeness, we briefly review the method of Refs. [46,51] to illustrate how to use TMD to get the f 2 -hadron couplings.…”

Section: Tensor Meson Dominancementioning

confidence: 99%

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ρmeson photoproduction at low energies

Lee

2004

Phys. Rev. C

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The σ-exchange and f 2 -exchange mechanisms for ρ meson photoproduction are re-examined. Then the commonly employed σ-exchange amplitude is revised by using the recent information from the analyses on the ρ → π 0 π 0 γ decay and the σN N coupling constant from Bonn potential. Instead of relying on the Pomeron-f proportionality assumption, the f 2 meson exchange amplitude is established from an effective Lagrangian which is constructed from the tensor structure of the f 2 meson. Phenomenological information together with tensor meson dominance and vector meson dominance assumptions are used to estimate the f 2 coupling constants. As a first step to improve the current theoretical models, we have also explored the effects due to the un-correlated 2π exchange amplitude with πN intermediate state. This leading-order 2π exchange amplitude can be calculated using the coupling constants determined from the study of pion photoproduction and the empirical width of ρ → ππ decay. In comparing with the existing differential cross section data, we find that a model with the constructed 2π, σ, and f 2 exchanges is comparable to the commonly used σ exchange model in which the σ coupling parameters are simply adjusted to fit the experimental data. We suggest that experimental verifications of the predicted single and double spin asymmetries in the small |t| (< 2 GeV 2 ) region will be useful for distinguishing the two models and improving our understanding of the non-resonant amplitude of ρ photoproduction. Possible further improvements of the model are discussed.

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Section: Appendix: Tensor Meson Dominance and F 2 -Hadron Interac-tionsmentioning

confidence: 51%

“…The results are summarized in Table I. Note that the value estimated based on the tensor-meson dominance [46] is much smaller than the empirical values. (See Appendix for details.…”

Section: E F 2 Meson Exchangementioning

confidence: 87%

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ρmeson photoproduction at low energies

Lee

2004

Phys. Rev. C

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“…This coupling is used to fix the universal coupling constant of the tensor meson, which then determines the f 2 -nucleon and f 2 -vector-meson coupling constants through the tensor meson dominance [21,31,32,33].…”

Section: B Intermediate Tensor Mesonmentioning

confidence: 99%

Higher meson resonances inρ→π0π0γ
Oh
¹
,
Kim
²

2003
Phys. Rev. D
10
3
2
0
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The role of higher meson resonances with spin 1 and 2 is investigated quantitatively in the decay processes of ρ → π 0 π 0 γ and ω → π 0 π 0 γ. Among the higher resonances, we find that the f 2 (1270) tensor meson can give a nontrivial contribution especially to the ω → π 0 π 0 γ decay process. When the f 2 contribution is combined with the processes involving the vector and scalar meson intermediate states, a good agreement with the recent measurements is achieved for both decays. The effect of the f 2 (1270) is found to be sizable at the intermediate photon energies and may be verified by precise measurements of the recoil photon spectrum of the ω → π 0 π 0 γ decay. The dependence of the decay widths on various models for the ρ-ω mixing in the literature is also investigated.

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