Electromagnetic Transition Form Factor of the Nucleon $$\Delta $$ (1232) in The Nonrelativistic Constituent Quark Model
Sign Up to like & getrecommendations! Published in 2019 at "Few-Body Systems"
DOI: 10.1007/s00601-019-1527-7
Abstract: The study of nucleon electromagnetic form factors has long been identified as a singular source of information for conception strong interactions in the extent of quark confinement. We have performed a calculation of the helicity… read more here.
Keywords: delta 1232; electromagnetic transition; form; quark ... See more keywords
Renormalization-group evolution of the none-local matrix element of B-meson in QCD and B → π transition form factor
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear Physics B"
DOI: 10.1016/j.nuclphysb.2021.115550
Abstract: We consider the renormalization-group evolution of the matrix element of 〈0|q̄(z)β[z, 0]b(0)α|B̄〉, which can be used to define the distribution amplitudes for B meson and widely applied in studies of B meson decays. The contribution… read more here.
Keywords: form factor; renormalization; transition form; factor ... See more keywords
Lattice calculation of the pion transition form factor with Nf=2+1 Wilson quarks
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.034520
Abstract: We present a lattice QCD calculation of the double-virtual neutral pion transition form factor, with the goal to cover the kinematic range relevant to hadronic light-by-light scattering in the muon $g-2$. Several improvements have been… read more here.
Keywords: transition form; factor; form factor; pion ... See more keywords
Transition form factors and helicity amplitudes for electroexcitation of negative and positive parity nucleon resonances in a light-front quark model
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.094013
Abstract: A workable basis of quark configurations $s^3$, $s^2p$ and $sp^2$ at light front has been constructed to describe the high-$Q^2$ behavior of transition form factors and helicity amplitudes in the electroproduction of the lightest nucleon… read more here.
Keywords: transition form; form factors; factors helicity; light front ... See more keywords
Pion-photon transition form factor in light cone sum rules and tests of asymptotics
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DOI: 10.1103/physrevd.102.034022
Abstract: We study the pion-photon transition form factor (TFF) $F^{\gamma*\gamma\pi^0}(Q^2)$ using a state-of-the art implementation of light cone sum rules (LCSRs) within fixed-order QCD perturbation theory. The spectral density in the dispersion relation includes all currently… read more here.
Keywords: light cone; photon transition; form factor; transition form ... See more keywords
Pion to photon transition form factors with basis light-front quantization
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.104.094034
Abstract: Chandan Mondal, 2, ∗ Sreeraj Nair, 2, † Shaoyang Jia, 4, ‡ Xingbo Zhao, 2, § and James P. Vary ¶ (BLFQ Collaboration) Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China School… read more here.
Keywords: transition form; physics; form factors; pion photon ... See more keywords
Transition Form Factors of Pseudoscalar Mesons and the Contribution of the Gluon Anomaly
Sign Up to like & getrecommendations! Published in 2019 at "Physics of Atomic Nuclei"
DOI: 10.1134/s1063778819120159
Abstract: The expressions for the transition form factors (TFFs) of pseudoscalar mesons are derived in the context of the anomaly sum rule approach based on the dispersion representation of the axial anomaly and hypothesis of the… read more here.
Keywords: form factors; contribution gluon; pseudoscalar mesons; transition form ... See more keywords