scholarly journals Variational analysis of mass spectra and decay constants for ground state pseudoscalar and vector mesons in the light-front quark model

2015 ◽  
Vol 92 (5) ◽  
Author(s):  
Ho-Meoyng Choi ◽  
Chueng-Ryong Ji ◽  
Ziyue Li ◽  
Hui-Young Ryu
Keyword(s):  
Quark Model ◽  
Ground State ◽  
Variational Analysis ◽  
Mass Spectra ◽  
Light Front ◽  
Vector Mesons ◽  
Decay Constants

scholarly journals Mass Spectra and Decay Constants of Heavy-Light Mesons: A Case Study of QCD Sum Rules and Quark Model

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Halil Mutuk
Keyword(s):  
Quark Model ◽  
Mass Spectra ◽  
Sum Rules ◽  
Theoretical Studies ◽  
Sum Rule ◽  
Decay Constants ◽  
Oscillator Wave Function ◽  
Light Mesons ◽  
Harmonic Oscillator Wave Function

We visited mass spectra and decay constants of pseudoscalar and vector heavy-light mesons (B, Bs, D, and DS) in the framework of QCD sum rule and quark model. The harmonic oscillator wave function was used in quark model while a simple interpolating current was used in QCD sum rule calculation. We obtained good results in accordance with the available experimental data and theoretical studies.

scholarly journals Dalitz Decays of Unflavored Mesons in the Poincaré Covariant Quark Model

2019 ◽  
Vol 64 (6) ◽  
pp. 451 ◽  
Author(s):  
V. Yu. Haurysh ◽  
V. V. Andreev
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Decay Constant ◽  
Radiative Decay ◽  
Vector Mesons ◽  
Mixing Angles ◽  
Decay Constants ◽  
S Quarks ◽  
Point Form ◽  
Covariant Quark Model

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.

scholarly journals Decays of light mesons in the relativistic quark model

2019 ◽  
Vol 55 (3) ◽  
pp. 325-337
Author(s):  
V. Yu. Haurysh ◽  
V. V. Andreev
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Radiative Decay ◽  
Form Factors ◽  
Integral Representations ◽  
Relativistic Quark Model ◽  
Vector Mesons ◽  
Resonance Effects ◽  
Decay Constants ◽  
Oscillator Wave Function

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.

scholarly journals Properties of Doubly Heavy Baryons

Universe ◽  
2021 ◽  
Vol 7 (9) ◽  
pp. 337
Author(s):  
Zalak Shah ◽  
Amee Kakadiya ◽  
Keval Gandhi ◽  
Ajay Kumar Rai
Keyword(s):  
Excited State ◽  
Quark Model ◽  
Ground State ◽  
Mass Spectra ◽  
Constituent Quark ◽  
Magnetic Moments ◽  
Constituent Quark Model ◽  
Negative Parity ◽  
Heavy Baryons ◽  
Model Scheme

We revisited the mass spectra of the Ξcc++ baryon with positive and negative parity states using Hypercentral Constituent Quark Model Scheme with Coloumb plus screened potential. The ground state of the baryon has been determined by the LHCb experiment, and the anticipated excited state masses of the baryon have been compared with several theoretical methodologies. The transition magnetic moments of all heavy baryons Ξcc++, Ξcc+, Ωcc+, Ξbb0, Ξbb−, Ωbb−, Ξbc+, Ξbc0, Ωbc0 are also calculated and their values are −1.013 μN, 1.048 μN, 0.961 μN, −1.69 μN, 0.73 μN, 0.48 μN, −1.39 μN, 0.94 μN and 0.710 μN, respectively.

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