2020/03/21 by Qin Chang, Xiao-Lin Wang, Li-Ting Wang
Physics and Astronomy · #Black Holes and Theoretical Physics #Covariance #Covariant transformation #Lorentz transformation #Particle physics theoretical and experimental studies #Polarization (electrochemistry) #Quantum Chromodynamics and Particle Interactions #Residual #Spurious relationship #Tensor (intrinsic definition) #hep-ex #hep-ph
paper · pdf · doi:10.1088/1674-1137/44/8/083105
published as Chin.Phys. C44 (2019) no.8, 083105 · 34 pages, 9 figures and 7 tables. arXiv admin note: text overlap with arXiv:1908.04677
arxiv created 2020/03/21 · openalex created_date 2020/04/03 · arxiv updated 2020/07/27 · openalex publication_date 2020/07/31 · openalex updated_date 2026/08/05
Abstract We investigate the tensor form factors of , and A transitions within the standard light-front (SLF) and the covariant light-front (CLF) quark models (QMs). The self-consistency and Lorentz covariance of CLF QM are analyzed via these quantities, and the effects of zero-mode are discussed. For the and A transitions, besides the inconsistency between the results extracted via longitudinal and transverse polarization states, which is caused by the residual -dependent spurious contributions, we find and analyze a “novel” self-consistence problem of the traditional CLF QM, caused by different strategies for dealing with the trace term in CLF matrix element. A possible solution to the problems of traditional CLF QM is discussed and confirmed numerically. Finally, the theoretical predictions for the tensor form factors of some and ( ) induced and A transitions are updated within the CLF QM with a self-consistent scheme.