Abstract
We review the QCD spectral sum rules predictions for the masses, couplings <0|θµv|T> and mixing angle of the tensor mesons and gluonium of QCD. Meson masses and splittings are obtained with the standard values of the QCD parameters deduced from the pseudoscalar and vector meson systems. The gluonium mass is found to be (1.7±0.1)GeV in embarrassing agreement with the ?-meson seen in ? decay experiments. Meson-Gluonium mixing angle is estimated to be small ≃ - 10°. The meson couplings are used into a low-energy theorem in order either to measure the fraction of pion momentum carried by the u and d quarks or to study the 8 decays into pairs of Goldstone bosons. In this approach, the enhancement of the 9 into KK versus the 9 into ΠΠ width as seen in ?-decay experiments can occur.
Talk presented at the XXIV International Conference on High Energy Physics, Munich August 1988. Based on the works with E. Bagan and A. Bramon except section 4 which is a new result.
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References
For a review on QCD spectral sum rules, see e.g : S. Narison, World Scientific Co (in press) and references Therein.
M.A. Shifman, A.I. Vainshtein and V.I. Zakharov, Nucl. Phys. B 147 (1979) 385,448.
E. Bagan and S. Narison, BNL Preprint 41341 (1988) (Phys. Lett.B in press).
V.A. Novikov et al, Nucl. Phys B 191 (1981) 301.
E. Bagan, A. Bramon and S. Narison, Phys. Lett 196 B (1987) 203
T.M. Aliev and M.A. Shifman, Phys. Lett. 112 B (1982) 401
K. Ishikawa et al, Phys. Rev. D 37 (1988) 3216.
S. Narison, Trieste - Montpellier preprint IC (88) 171 –PM (88) 35.
S. Narison, Z. Phys C 26 (1984) 206.
For a recent review, see e.g D.Hitlin, BNL Workshop on Glueball... BNL (1988) ; B. Jean-Marie, Berkeley conference (1986)
S. Narison and G. Veneziano, CERN preprint TH 4987/88 (1988)
K.F. Liu, BNL Workshop on Glueball... BNL (1988)
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© 1989 Springer-Verlag Berlin Heidelberg
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Narison, S. (1989). Tensor Mesons and Gluonium of QCD. In: Kotthaus, R., Kühn, J.H. (eds) XXIV International Conference on High Energy Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-74136-4_48
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DOI: https://doi.org/10.1007/978-3-642-74136-4_48
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