scholarly journals On Radiative Decay of Heavy Vector Mesons <i>V</i> &rarr; <i>P&gamma;</i> in the Scalar Strong Interaction Hadron Theory

2018 ◽  
Vol 09 (04) ◽  
pp. 584-595
Author(s):  
F. C. Hoh
2008 ◽  
Vol 77 (3) ◽  
Author(s):  
H. Nagahiro ◽  
L. Roca ◽  
E. Oset

1997 ◽  
Vol 06 (01) ◽  
pp. 121-134
Author(s):  
A. R. Panda ◽  
K. C. Roy

The radiative decay widths of vector mesons were considered in a model involving chiral symmetry breaking through a nontrivial vacuum structure where the pion and kaon being treating consistently yield the constituent quark wave functions, approximately the same as that obtained from the gap equations and thus in a way determine the constituent quark field operators. Like its earlier success to some low energy hadronic phenomena, here also the model calculations of radiative decay widths of mesons are in reasonable agreements with other theoretical estimations as well as experimental measurements.


1973 ◽  
Vol 8 (1) ◽  
pp. 207-214
Author(s):  
A. Böhm ◽  
Jan S. Nilsson

2020 ◽  
Vol 80 (12) ◽  
Author(s):  
K. Azizi ◽  
A. R. Olamaei ◽  
S. Rostami

AbstractWe calculate the strong coupling constants among the doubly heavy spin-$$ \frac{3}{2} $$ 3 2 baryons $$\Xi ^*_{QQ}$$ Ξ QQ ∗ and $$\Omega ^*_{QQ}$$ Ω QQ ∗ , with Q and $$ Q' $$ Q ′ being c or b quark, with light vector meson by means of the light-cone QCD sum rules. The matrix elements defining these vertices are described by four coupling constants $$ g_1$$ g 1 , $$ g_2$$ g 2 , $$ g_3$$ g 3 , and $$ g_4 $$ g 4 . The unwanted pollution coming from the doubly heavy spin-$$ \frac{1}{2} $$ 1 2 baryons are removed by a special ordering of Dirac matrices and selection of appropriate Lorentz structures. The strong coupling constants are basic parameters that carry information on the nature of the strong interaction among hadronic multiplets. Investigation of these parameters may help physicists in the construction of the strong potentials among the doubly heavy baryons and light vector mesons. The values obtained for the strong coupling constants may also help experimental groups in analyses of the data produced at various hadron colliders.


1975 ◽  
Author(s):  
A. Bohm ◽  
M. Hossain ◽  
B. A. Kagali ◽  
P. Moylan ◽  
R. B. Teese ◽  
...  

2019 ◽  
Vol 64 (6) ◽  
pp. 451 ◽  
Author(s):  
V. Yu. Haurysh ◽  
V. V. Andreev

The procedure for obtaining the radiative decay constants of pseudoscalar and vector unflavored mesons in the point-form of PiQM is presented. Based on the obtained earlier parameters of the model for light (u, d, s) quarks, we obtain the remaining parameters from the experiments on the V → Py and P → Vy decays. As a result, the mixing angles for pseudoscalar and vector mesons and the behavior of the V → Pℓ+ℓ− decay constant are obtained in agreement with modern experimental data.


Author(s):  
V. Yu. Haurysh ◽  
V. V. Andreev

In the framework of the relativistic quark model based on the point form of the Poincaré-invariant quantum mechanics, the parameters were fixed using the integral representations of the lepton decay constants of pseudoscalar and vector mesons containing u-, d- and s-quarks. As a result of numerical calculations using the oscillator wave function, the basic parameters of the model are obtained using the pseudoscalar density constant and current quark masses. The analysis showed that the obtained calculation results in the framework of the model and the experimental data on the lepton decays of hadrons agree well with each other. As a result, the calculation method is generalized to the case of hadronic transitions with γ-quantum emission and a subsequent calculation of the integral representations of radiative decay constants of pseudoscalar and vector mesons. The obtained values of the anomalous magnetic moments are compared with the baryon data. As a test of the model, the authors studied the behavior of the form-factors of radiative decays of vector mesons with a subsequent comparison to the modern experimental data in the q < 0.5 GeV range where the resonance effects are insignificant. As a result, self-consistent descriptions of lepton and radiative transitions were obtained within the framework of the model proposed by the authors.


1990 ◽  
Vol 339 (2) ◽  
pp. 269-309 ◽  
Author(s):  
Benjamin Grinstein ◽  
Roxanne Springer ◽  
Mark B. Wise

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