scholarly journals Twist-2 pseudoscalar and vector meson distribution amplitudes in light-front quark model with exponential-type confining potential

2019 ◽  
Vol 100 (1) ◽  
Author(s):  
Nisha Dhiman ◽  
Harleen Dahiya ◽  
Chueng-Ryong Ji ◽  
Ho-Meoyng Choi
Keyword(s):  
Vector Meson ◽  
Quark Model ◽  
Exponential Type ◽  
Light Front ◽  
Confining Potential

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.

scholarly journals Mesonic tensor form factors with the light front quark model

2001 ◽  
Vol 64 (11) ◽  
Author(s):  
C. Q. Geng ◽  
C. W. Hwang ◽  
C. C. Lih ◽  
W. M. Zhang
Keyword(s):  
Quark Model ◽  
Form Factors ◽  
Light Front ◽  
Tensor Form

scholarly journals The weak decays of $\Xi^{(')}_{c}\to\Xi$ in the light-front quark model

2021 ◽  
Author(s):  
Hong-Wei Ke ◽  
Qing-Qing Kang ◽  
Xiao-Hai Liu ◽  
Xue-Qian 李学潜 Li
Keyword(s):  
Quark Model ◽  
Light Front ◽  
Weak Decays

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.

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