Pion spectroscopy and dynamics using the holographic light-front Schrödinger equation and the 't Hooft equation

Ahmady, Mohammad; Kaur, Satvir; Mondal, Chandan; Sandapen, Ruben

doi:10.1016/j.physletb.2022.137628

Physics Letters B

2023

DOI: 10.1016/j.physletb.2022.137628

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Pion spectroscopy and dynamics using the holographic light-front Schrödinger equation and the 't Hooft equation

Mohammad Ahmady

Satvir Kaur

Chandan Mondal

et al.

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Cited by 5 publications

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Pion distribution functions from low-order Mellin moments

Lu,

Xu,

Raya

et al. 2024

Physics Letters B

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Pion distribution functions from low-order Mellin moments

Lu,

Xu,

Raya

et al. 2024

Physics Letters B

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ρ -meson spectroscopy and diffractive production using the holographic light-front Schrödinger equation and the ’t Hooft equation

Gurjar,

Mondal,

Kaur

2024

Phys. Rev. D

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We determine the mass spectroscopy and light-front wave functions (LFWFs) of the ρ-meson by solving the holographic Schrödinger equation of light-front chiral QCD along with the ’t Hooft equation of (1+1)-dimensional QCD in the large Nc limit. Subsequently, we utilize the obtained LFWFs in conjunction with the color glass condensate dipole cross section to calculate the cross sections for the diffractive ρ-meson electroproduction. Our spectroscopic results align well with the experimental data. Predictions for the diffractive cross sections demonstrate good consistency with the available experimental data at different energies from H1 and ZEUS collaborations. Additionally, we show that the resulting LFWFs for the ρ-meson can effectively describe various properties, including its decay constant, distribution amplitudes, electromagnetic form factors, charge radius, magnetic and quadrupole moments. Comparative analyses are conducted with experimental measurements and the available theoretical predictions. Published by the American Physical Society 2024

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First radial excitations of mesons and diquarks in a contact interaction

Paredes-Torres,

Gutiérrez-Guerrero,

Bashir

et al. 2024

Phys. Rev. D

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We present a calculation for the masses of the first radially excited states of 40 mesons and diquarks made up of u, d, s, c, and b quarks, including states that contain one or both heavy quarks. To this end, we employ a combined analysis of the Bethe-Salpeter and Schwinger-Dyson equations within a self-consistent and symmetry-preserving vector-vector contact interaction. The same set of parameters describes ground and excited states of mesons and their diquark partners. The wave function of the first radial excitation contains a zero whose location is correlated with an additional parameter dF which is a function of dressed quark masses. Our results satisfy the equal spacing rules given by the Gell-Mann Okubo mass relations. Wherever possible, we make comparisons of our findings with known experimental observations as well as theoretical predictions of several other models and approaches including lattice quantum chromodynamics, finding a very good agreement. We report predictions for a multitude of radial excitations not yet observed in experiments. Published by the American Physical Society 2024

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Pion spectroscopy and dynamics using the holographic light-front Schrödinger equation and the 't Hooft equation

Cited by 5 publications

References 58 publications

Pion distribution functions from low-order Mellin moments

Pion distribution functions from low-order Mellin moments

ρ -meson spectroscopy and diffractive production using the holographic light-front Schrödinger equation and the ’t Hooft equation

First radial excitations of mesons and diquarks in a contact interaction

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