M1 Radiative Transition of Light Mesons in the Light-Front Quark Model
Muhammad Ridwan(a*), Ahmad Jafar Arifi(b)(c), Terry Mart(a)

a) Department of Physics, Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Indonesia, Depok 16424, Indonesia
*muhammad.ridwan75[at]sci.ui.ac.id
b) Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
c) Research Center for Nuclear Physics, The University of Osaka, Ibaraki, Osaka 567-0047, Japan

Abstract

We investigate the M1 radiative transitions between light vector and pseudoscalar mesons in the light-front quark model. To this end, we use the light-front wave functions (LFWFs) obtained from our previous work based on the QCD-motivated effective Hamiltonian that includes smeared spin-spin interactions, where a few harmonic oscillator basis functions were employed as trial wave functions. Our analysis adopts good and transverse current components with both longitudinal and transverse polarizations. The results, including their couplings, widths, and branchings, obtained from LFWFs with different trial wave functions are compared with experimental data and other theoretical predictions.

Keywords: M1 radiative transition, LFQM, light vector and pseudoscalar mesons, LFWFs, currents, polarizations

Topic: Theory, Nuclear, and Particle Physics