And Prof Hagen, who is affiliated to the University of Rochester, New York, suggested that it be called the Standard Model

Scalar Meson, or SM Squared.

Further, we have checked that the potential of [M.sup.0][M.sup.0] and [[bar.M].sup.0][[bar.M].sup.0] interactions is attractive (U < 0) for the case of

scalar meson exchange and repulsive for the case of vector meson exchange.

Schechter, "Global aspects of the scalar meson puzzle," Physical Review D: Particles, Fields, Gravitation and Cosmology, vol.

Schechter, "Model for light scalar mesons in QCD," Physical Review D: Particles, Fields, Gravitation and Cosmology, vol.

We insert the complete sets of appropriate vector meson (|V><V|) and scalar meson (|S><S|) states (regarding the conservation of the quantum numbers of corresponding interpolating currents) inside correlation functions equation (1).

where p' and [epsilon]' are the momentum and polarization of final state vector meson, that is, either J/[psi] or Y mesons, [epsilon] is the polarization of real photon, and p is the momentum of initial scalar meson.

Similarly, we can also write the scattering T matrix corresponding to [D.sub.0]N ([D.sub.0] is a scalar meson) in terms of the scattering lengths [23],

For the scalar meson, [D.sub.0], the Borel transformation equation is written as [23]

Zhang, "Multiquark states and the mixing of

scalar meson," Chinese Physics C, vol.

which describes a system of conserved scalar nucleons interacting with neutral

scalar mesons in particle physics.

Stech, "Mixing and decay constants of pseudo

scalar mesons: the sequel," Physics Letters B, vol.

The masses of the

scalar mesons are presented in Table 4; the value of D meson is close to the experimental value.