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