Results 241 to 250 of about 27,698 (267)

Radiative corrections: from medium to high energy experiments. [PDF]

open access: yesEur Phys J A Hadron Nucl
Afanasev A   +18 more
europepmc   +1 more source

Pseudoscalar meson-meson scattering

Nuclear Physics A, 1986
Abstract It is shown that an unmodified constituent model is not able to give agreement both with scattering lengths, either from PCAC or experiment, and with the experimental value of fπ. Therefore we propose a modified model. Assuming that only a fraction cM of a meson is well represented by the constituent model leads to a model which describes ...
H.G. Dosch, R.R. Schröder
openaire   +2 more sources

Duality and the pseudoscalar mesons

Il Nuovo Cimento A, 1976
The Lovelace-Veneziano model for the pseudoscalar-meson process PP → PP is considered with particular attention to the problematical requirement of ideal mixing for the pseudoscalar nonet. A solution to the problem which retains the narrow-resonance approximation for this process is found.
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Radial excitations of pseudoscalar mesons

Nuclear Physics A, 2000
The current status of radial excitations of pseudoscalar mesons is reviewed. From the observed pseudoscalar states, π(1300), K(1460), η(1295), η(1440), and η(1760), possible nonets of the first radial excitations are examined, together with open problems.
openaire   +3 more sources

Nonlinear Pseudoscalar Meson Theory

Physical Review, 1952
An attempt is made to explain nuclear saturation by means of a nonlinear pseudoscalar meson field. The same nonlinearity as that introduced by Schiff for the scalar case is employed; the treatment follows similar lines, using classical field theory. The total source strength is calculated for an isolated nucleon at rest, and an expression for the two ...
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The Pseudoscalar Meson Field with Strong Coupling

Physical Review, 1942
The present paper treats the symmetrical and charged pseudoscalar theories of the meson field, using the strong coupling approximation; it restricts itself to the case of a single source. The energy levels of the excited states of the heavy particle and the scattering cross section for free mesons are computed by wave mechanical methods.
Wolfgang Pauli, S. M. Dancoff
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ON THE WAVEFUNCTION OF LIGHT PSEUDOSCALAR MESONS

Modern Physics Letters A, 1990
It is shown that electroweak interactions lead to a hard (decreasing at most logarithmically with increasing q2 at [Formula: see text]) part in the Bethe-Salpeter wave function of light pseudoscalars. However, this part is strongly suppressed by the factor [Formula: see text], where F EW ≃ 250 GeV and mc is a quark current mass.
openaire   +2 more sources

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