Evidence for a scalar meson resonance in the π[sup −]p→nωφ reaction

2010 ◽  
Author(s):  
A. Ivashin ◽  
A. Ekimov ◽  
Yu. Gouz ◽  
I. Kachaev ◽  
A. Karyukhin ◽  
...  
Keyword(s):  
Scalar Meson ◽  
Meson Resonance

scholarly journals THE ROLE OF $K^*_0(1430)$ IN D → PK AND τ → KPντ DECAYS

1999 ◽  
Vol 14 (26) ◽  
pp. 4161-4175 ◽  
Author(s):  
S. FAJFER ◽  
J. ZUPAN
Keyword(s):  
Experimental Data ◽  
Form Factor ◽  
Matrix Element ◽  
Scalar Meson ◽  
Final State Interaction ◽  
Form Factors ◽  
Decay Rates ◽  
Scalar Form Factor ◽  
Meson Resonance ◽  
Scalar Form

We consider the scalar form factor in the weak current matrix element <PK|jμ|0>, P=π, η, η′. It obtains the contributions from the scalar meson resonance [Formula: see text] and from the scalar projection of the vector meson K*(892) resonance. We analyze decay amplitudes of the Cabibbo suppressed decays D → KP, P=π, η, η′ using the factorization approach. The form factors of the relevant matrix elements are described by assuming the dominance of nearby resonances. The annihilation contribution in these decays arises from the matrix element <PK|jμ|0>. All the required parameters are experimentally known except the scalar meson [Formula: see text] decay constant. We fit the decay amplitudes and we find that final state interaction improves the agreement with the experimental data. Then we extract bounds on scalar form factor parameters and compare them with the experimental data obtained in the analyses of K→πeνe and K→πμνμ. The same scalar form factor is present in the τ → KPντ decay, with P=π, η, η′. Using the obtained bounds we investigate the significance of the scalar meson form factor in the τ→ KPντ, P=π, η, η′ decay rates and spectra. We find that the [Formula: see text] scalar meson dominates in the τ→Kη′ντ decay spectrum.

Scalar meson widths

1968 ◽  
Vol 6 (4) ◽  
pp. 367-372
Author(s):  
L. Micu
Keyword(s):  
Scalar Meson

scholarly journals Scalar meson dynamics in chiral perturbation theory

2004 ◽  
Vol 69 (7) ◽  
Author(s):  
Albert Bramon ◽  
Rafel Escribano ◽  
José Luís Lucio Martínez
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Scalar Meson ◽  
Chiral Perturbation

No-Recoil Approximations to Charged Scalar Meson Scattering

1956 ◽  
Vol 103 (6) ◽  
pp. 1870-1873 ◽  
Author(s):  
G. Feldman ◽  
P. T. Matthews
Keyword(s):  
Scalar Meson ◽  
Charged Scalar

scholarly journals Relativistic effects in scalar meson dynamics

1994 ◽  
Vol 50 (5) ◽  
pp. 3145-3157 ◽  
Author(s):  
R. Kamiński ◽  
L. Leśniak ◽  
J.-P. Maillet
Keyword(s):  
Scalar Meson ◽  
Relativistic Effects

scholarly journals A possible assignment for the ground scalar meson nonet

2005 ◽  
Vol 25 (2) ◽  
pp. 263-266 ◽  
Author(s):  
De-Min Li ◽  
Ke-Wei Wei ◽  
Hong Yu
Keyword(s):  
Scalar Meson

scholarly journals Scalar meson exchange and the baryon spectra

2000 ◽  
pp. 261-265
Author(s):  
P. Stassart ◽  
Fl. Stancu ◽  
J.-M. Richard
Keyword(s):  
Scalar Meson ◽  
Meson Exchange ◽  
Baryon Spectra
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