scholarly journals Photo-Neutral Vector Meson Couplings in the Relativistic Extended Quark Model

1972 ◽  
Vol 48 (1) ◽  
pp. 335-337 ◽  
Author(s):  
Tsunehiro Kobayashi
Keyword(s):  
Vector Meson ◽  
Quark Model ◽  
Neutral Vector

e+ e- ANNIHILATION INTO $\overline{N}N$ PAIRS

2003 ◽  
Vol 18 (02n06) ◽  
pp. 370-373 ◽  
Author(s):  
Y. YAN ◽  
C. KOBDAJ ◽  
W. UCHAI ◽  
AMAND FAESSLER ◽  
T. GUTSCHE ◽  
...  
Keyword(s):  
Experimental Data ◽  
Vector Meson ◽  
Quark Model ◽  
Step Process ◽  
Meson Decays ◽  
Quantum Numbers ◽  
One Step ◽  
The One

The reactions of electron-position annihilation into nucleon-antinucleon pairs have been studied in a nonperturbative quark model. The work suggests that the two-step process, in which the primary [Formula: see text] pair forms first a meson and then the meson decays into baryon pair, is dominant over the one-step process in which the primary [Formula: see text] pair is directly dressed by two additional [Formula: see text] pairs to form a baryon pair. The experimental data indicates that there exists a vector meson with quantum numbers IG(JPC) = 0-(1--) and a mass around 2 GeV.

scholarly journals Poincaré-covariant quark model of electroweak light mesons decays

2019 ◽  
Vol 204 ◽  
pp. 08006 ◽  
Author(s):  
Viktor Andreev ◽  
Vadzim Haurysh
Keyword(s):  
Quantum Mechanics ◽  
Vector Meson ◽  
Quark Model ◽  
Radiative Decay ◽  
Mixing Angles ◽  
Decay Constants ◽  
Point Form ◽  
Experimental Decay ◽  
Invariant Quantum ◽  
Covariant Quark Model

The procedure for obtaining the radiative decay constants of pseudoscalar and vector unflavored mesons in point–form of Poincaré-invariant quantum mechanics is presented. In the course of the work the authors determine the remaining parameters from V → Pγ and P → Vγ experimental decay value, using the obtained earlier parameters of the model for light (u, d and s) quarks. As a result, the mixing angles for pseudoscalar and vector meson sector were obtained taking into account gluonium content for η – η′ meson sector.

scholarly journals Note on the Neutral Vector Meson Theory

1953 ◽  
Vol 10 (6) ◽  
pp. 690a-690a ◽  
Author(s):  
R. J. Glauber
Keyword(s):  
Vector Meson ◽  
Meson Theory ◽  
Neutral Vector

QUARK-PION COUPLING CONSTANT IN AN INDEPENDENT-QUARK MODEL WITH CHIRAL SYMMETRY

1993 ◽  
Vol 08 (07) ◽  
pp. 607-617 ◽  
Author(s):  
S.N. JENA ◽  
S. PANDA
Keyword(s):  
Vector Meson ◽  
Quark Model ◽  
Chiral Symmetry ◽  
Finite Size ◽  
Meson Decay ◽  
Width Ratio ◽  
Coupling Constant ◽  
Confining Potential ◽  
Pion Nucleon ◽  
Good Agreement

Incorporating chiral symmetry into an independent-quark model with the confining potential Vq(r) = ½(1 + γ0)(a2r + V0), the quark-pion coupling constant for quarks in a nucleon are estimated. The values of [Formula: see text] obtained with the approximation of a point pion as well as finite size pion are consistent with that extracted from the experimental vector meson decay width ratio Γ(ρ → π+π0)/Γ(ρ → π- ν) by Suzuki and Bhaduri. The pion-nucleon coupling constant [Formula: see text] comes out to be 14.98 in good agreement with the experimental value.

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