Results 21 to 30 of about 17,379 (194)
Vector-meson dominance and diffractive electroproduction of vector mesons
Nuclear Physics B, 1969 Abstract A vector-meson dominance model of diffractive electroproduction of vector mesons at high energies is presented. The assumption that the invariant amplitudes are slowly varying as a function of the vector-meson mass, when extrapolating to the spacelike region, is shown to lead to serious difficulties when combined with helicity independence ...
FRAAS, H, Schildknecht, Dieter
openaire +3 more sources
A vector meson dominance approach to scale invariance
Physics Letters B, 1972 Abstract A model of scale invariance for both deep inelastic scattering and e + e − annihilation incorporating an infinite number of vector mesons is proposed. Structure functions are calculated explicitly in good agreement with experiments. Precocious scaling arises naturally in the model.
A. Bramon, E. Etim, GRECO, Mario
openaire +3 more sources
From Vector Meson Dominance to Quark-Hadron Duality [PDF]
, 2012 A short review of the many contributions to hadron physics made by Mario Greco is presented. The review roughly covers his production between 1971 and 1974, just before the advent of QCD, when quark-model ideas, duality principles and vector meson ...
A. Bramòn
openalex +2 more sources
A vector meson dominance model for pions [PDF]
, 2018 3 pages, no ...
Gary B. Tupper
openalex +3 more sources
Understanding oscillating features of the timelike nucleon electromagnetic form factors within the extending vector meson dominance model [PDF]
Physical Review D, 2023 We investigate the nonmonotonic behavior observed in the time-like nucleon electromagnetic form factors. Using a phenomenological extending vector meson dominance model, where the ground states $\rho$ and $\omega$ and their excited states $\rho(2D ...
Bing Yan, Cheng Chen, Xia Li, Ju-Jun Xie
semanticscholar +1 more source
Vector meson dominance in $η'\rightarrowπ^0γγ$ decay
, 2018 The decay $ '\rightarrow ^0 $ is studied theoretically in the framework of the Vector Meson Dominance model (VMD). We find theoretically a significant contribution of the interference of $ - $ and provide theoretical Dalitz-plots. Comparison with the experimental results of BES-III \cite{BES-III} is done.
Yaroslav Balytskyi
openalex +2 more sources
The $\Sigma$ and $\Xi$ electromagnetic form factors in the extended vector meson dominance model [PDF]
, 2023 We propose a phenomenological extended vector meson dominance model for the baryon electromagnetic structure, and it is found that the current experimental data on the $\Sigma$ and $\Xi$ electromagnetic form factors in the time-like region can be well ...
B. Yan, Cheng Chen, Ju-Jun Xie
semanticscholar +1 more source
Electromagnetic form factors of Σ+ and Σ− in the vector-meson dominance model [PDF]
Communications in Theoretical Physics, 2020 Based on the recent measurements of the e+e−→Σ+Σ¯− and e+e−→Σ−Σ¯+ processes by the Beijing Spectrometer III (BESIII) collaboration, the electromagnetic form factors of the hyperon Σ+ and Σ− in the timelike region are investigated using the vector-meson ...
Zhong-Yi Li, Ju-Jun Xie
semanticscholar +1 more source
Vector meson dominance and the ρ meson [PDF]
Physical Review D, 1999 We discuss the properties of vector mesons, in particular the rho^0, in the context of the Hidden Local Symmetry (HLS) model. This provides a unified framework to study several aspects of the low energy QCD sector. Firstly, we show that in the HLS model the physical photon is massless, without requiring off field diagonalization.
Benayoun, M. +2 more
openaire +3 more sources
Photon Shadowing in Nuclei [PDF]
مجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1986 Photonuclear Shadowing is studied using the Glauber - generalized vector meson dominance approach. The calculation is performed using both diagonal and off - diagonal generalized vector dominance (GVMD) models. The results are compatible with experiments
Ghassan Saffarini
doaj +1 more source