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 state heavy mesons in the light-front quark model

Arifi, Ahmad Jafar; Choi, Ho-Meoyng; Ji, Chueng-Ryong; Oh, Yongseok

doi:10.1103/physrevd.106.014009

Phys. Rev. D

2022

DOI: 10.1103/physrevd.106.014009

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Mixing effects on 1S and 2S state heavy mesons in the light-front quark model

Ahmad Jafar Arifi

Ho-Meoyng Choi

Chueng-Ryong Ji

et al.

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Cited by 13 publications

References 65 publications

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The present and future of QCD

Achenbach,

Adhikari,

Afanasev

et al. 2024

Nuclear Physics A

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The present and future of QCD

Achenbach,

Adhikari,

Afanasev

et al. 2024

Nuclear Physics A

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Distribution amplitude and decay constant of 1S and 2S state light mesons in the light-front quark model

Syahbana,

Arifi,

Mart

2024

ITM Web Conf.

Self Cite

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Studying meson structures is essential for gaining insights into the nonperturbative nature of Quantum Chromodynamics (QCD). This study will focus on calculating the decay constant and distribution amplitudes (DAs) of unflavored light mesons (π and ρ) in the 1S and 2S states using the Light Front Quark Model. This study utilizes the QCD-motivated Hamiltonian, taking into account both contact and smeared spin-spin interactions. The two lowest harmonic oscillator bases are employed in this work to achieve improved results for the 2S states. The study found the optimal mixing parameter in basis expansion coefficients to be θ = 10°. Light meson properties, including the mass spectrum, decay constant, and twist-2 DAs, are then predicted using model parameters fixed through the variational principle. While the contact spin-spin interaction yields poor accuracy, the results from the smeared interaction generally agree well with experimental data and other theoretical models with $ f_{\pi}^{1S}=130 $ MeV and $ f_{\rho}^{1S}=210 $ MeV in the mixed state. Unlike the case for the 1S state, it should be noted that the properties of the 2S state are sensitive to the mixing parameter θ. In addition, we observe that the decay constant for ρ(2S) is $ f_{\rho}^{2S}=116 $ MeV. While for π(2S) the decay constant is extremely small with the value of $ f_{\pi}^{2S}=0.9 $ MeV, which is mainly due to the dynamical chiral symmetry breaking.

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The properties of radially excited charmonia in the light front quark model

Ridwan,

Arifi,

Mart

2024

ITM Web Conf.

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Investigating the properties of excited charmonia is important to clarify its internal structure. In this paper, we present the mass spectra (MS) and decay constants (DC) for charmonia up to 3S states calculated by means of the light-front quark model based on a variational approach. In particular, we consider the QCD-motivated effective Hamiltonian, which includes both confinement (linear and screened) and Coulomb-like potentials. Furthermore, since the existence of the nature of heavy quark symmetry, we treat hyperfine interactions perturbatively. We developed the harmonic oscillator expansion method to approximate the wave function (WF) for excited states. We found that the results of our theoretical calculations, using screened potentials rather than linear ones, are in good agreement with experimental data. By looking at the mass and decay constant result, we found that our result on the ψ(3S) state matched the properties of the ψ(4040) resonance.

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Mixing effects on 1S and 2S state heavy mesons in the light-front quark model

Cited by 13 publications

References 65 publications

The present and future of QCD

The present and future of QCD

Distribution amplitude and decay constant of 1S and 2S state light mesons in the light-front quark model

The properties of radially excited charmonia in the light front quark model

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