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13 papers
Electromagnetic structure of Bc and heavy quarkonia in the light-front quark model
Rayn Rasyid Harjapradipta, Muhammad Ridwan, Ahmad Jafar Arifi +1
We investigate the electromagnetic structure of heavy quarkonia and the meson within the light-front quark model (LFQM) to better understand the internal spatial charge distr…
Hadronic exceptional points
Ahmad Jafar Arifi, Kei Suzuki
Exceptional points, where eigenvalues and eigenvectors coalesce, are a defining feature of non-Hermitian systems and have been extensively observed in photonic, atomic, and condens…
Landau-Zener-Stückelberg-Majorana dynamics of magnetized quarkonia
Ahmad Jafar Arifi, Kei Suzuki
The mass spectrum of hadrons in magnetic fields features avoided level-crossing structures arising from the mixing of spin eigenstates. In this work, we investigate the impact of l…
Polarization-dependent mass modifications of meson with finite momentum in nuclear matter
Ahmad Jafar Arifi, Philipp Gubler, Kazuo Tsushima
We investigate the in-medium properties of the meson with finite momentum, going beyond the commonly studied case at rest. In a nuclear medium, Lorentz invariance is broken, l…
Quarkonium spectra with magnetically induced anisotropic confinement
Ahmad Jafar Arifi, Kei Suzuki
Strong magnetic fields modify the force that confines quarks inside hadrons and make it direction-dependent. Using quark-antiquark potentials obtained from lattice simulations as i…
Kaon T-even transverse-momentum-dependent distributions and form factors in a self-consistent light-front quark model
Yongwoo Choi, Ahmad Jafar Arifi, Ho-Meoyng Choi +1
We present a self-consistent light-front quark model (LFQM) for the kaon based on the Bakamjian--Thomas (BT) construction and apply it to the electromagnetic and scalar form factor…