Independence of current components, polarization vectors, and reference frames in the light-front quark model analysis of meson decay constants

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

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The issue of resulting in the same physical observables with different current components, in particular from the minus current, has been challenging in the light-front quark model (LFQM) even for the computation of the two-point functions such as meson decay constants. At the level of one-body current matrix element computation, we show the uniqueness of pseudoscalar and vector meson decay constants using all available components including the minus component of the current in the LFQM consistent with the Bakamjian-Thomas construction. Regardless of the current components, the polarization vectors, and the reference frames, the meson decay constants are uniquely determined in the noninteracting constituent quark and antiquark basis while the interactions of the constituents are added to the meson mass operator in the LFQM.

Original languageEnglish
Article number053003
JournalPhysical Review D
Volume107
Issue number5
DOIs
StatePublished - 1 Mar 2023

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