Author
Pui Sum Yuen
Recent research
- Physics & SpaceOpen access
The spatial structure of baryon transition currents provides valuable insight into nucleon excitations beyond what can be inferred from transition form factors alone. In this work, the Patterson function is applied to reconstruct the transition current density associated with the...
- Physics & SpaceOpen access
The transition current associated with the N(1520) longitudinal amplitude is examined using a Patterson-function approach applied directly to empirical GC transition form-factor data. Because the reconstruction is based solely on experimental input, the resulting spatial distribu...
- Physics & SpaceOpen access
The transition current associated with the N(1520) longitudinal amplitude is examined using a Patterson-function approach applied directly to empirical GC transition form-factor data. Because the reconstruction is based solely on experimental input, the resulting spatial distribu...
- Physics & SpaceOpen access
The transition current associated with the N(1520) longitudinal amplitude is examined using a Patterson-function approach applied directly to empirical GC transition form-factor data. Because the reconstruction is based solely on experimental input, the resulting spatial distribu...
- Physics & SpaceOpen access
Artificial density distribution in the N(1535) negative parity transition current structure
The present work applies Patterson function methodology to reconstruct the spatial distribution of the N(1535) negative parity transition current. The resulting profile represents an artificial density distribution, offering a model‑independent view of baryon excitation structure...
- Physics & SpaceOpen access
Artificial density distribution in the N(1535) negative parity transition current structure
The present work applies Patterson function methodology to reconstruct the spatial distribution of the N(1535) negative parity transition current. The resulting profile represents an artificial density distribution, offering a model‑independent view of baryon excitation structure...
- Physics & SpaceOpen access
This study improves the reconstruction of the Dirac‑type transition current density of the N(1440) Roper radial excitation F1 through selective flattening. The analysis reveals a sharply localized positive core with a half‑maximum radius of 0.0339 fm, surrounded by a diffuse nega...
- Physics & SpaceOpen access
This study applies the Patterson function to reconstruct the Pauli‑type transition current density of the N(1535) negative parity F2 resonance. The resulting profile is non‑negative with half‑maximum radius 0.0780 fm. Beyond this core result, the analysis demonstrates how Patters...
- Physics & SpaceOpen access
This study employs the Patterson function to reconstruct the Dirac‑type transition current density of the N(1440) Roper radial excitation F1. The analysis reveals a sharply localized positive core with a half‑maximum radius of 0.0352 fm, surrounded by a softer negative shell. The...
- Physics & SpaceOpen access
This study employs Patterson function analysis to reconstruct the spatial distribution of the N(1440) Roper radial excitation Dirac-type transition current based on empirical F1 form factors. By avoiding reliance on theoretical modeling, the method produces a sharply localized de...
- Physics & SpaceOpen access
This study employs Patterson function analysis to reconstruct the spatial distribution of the N(1440) Roper radial excitation Dirac-type transition current based on empirical F1 form factors. By avoiding reliance on theoretical modeling, the method produces a sharply localized de...
- Physics & SpaceOpen access
This study revisits the N(1535) negative parity Dirac‑type transition current using Patterson function analysis applied to empirical F1 form factors. By avoiding reliance on theoretical modeling, the method produces a sharply localized density profile with both positive and negat...
- Physics & SpaceOpen access
This study refines the reconstruction of the Dirac‑type transition current density of the N(1535) negative parity F1 resonance through selective flattening. The analysis reveals a compact positive core with a half‑maximum radius of 0.0339 fm, encircled by a diffuse negative shell...
- Physics & SpaceOpen access
Artificial density distribution in the N(1440) Roper radial excitation transition current structure
This study employs Patterson function analysis to reconstruct the spatial distribution of the N(1440) Roper radial excitation transition current. By combining empirical Dirac (F₁) and Pauli (F₂) form factors, the method reveals that the contribution of F₂ is comparatively minor....
- Physics & SpaceOpen access
Artificial density distribution in the N(1440) Roper radial excitation transition current structure
This study employs Patterson function analysis to reconstruct the spatial distribution of the N(1440) Roper radial excitation transition current. By combining empirical Dirac (F₁) and Pauli (F₂) form factors, the method reveals that the contribution of F₂ is comparatively minor....
- Physics & SpaceOpen access
Using a scaling approach based on the Patterson function, we reconstruct the electric quadrupole transition current of the Δ(1232) baryon. The Patterson profile yields a half‑maximum radius of 0.097 fm, while the derived transition current density exhibits a more compact radius o...
- Physics & SpaceOpen access
Using a scaling approach based on the Patterson function, we reconstruct the electric quadrupole transition current of the Δ(1232) baryon. The Patterson profile yields a half‑maximum radius of 0.097 fm, while the derived transition current density exhibits a more compact radius o...
- Physics & SpaceOpen access
Reconstructed proton mechanical forces structure: Insights from Patterson function analysis
Using the gravitational form factor Di, the proton’s internal mechanical force distribution was reconstructed through Patterson function analysis combined with a scaling procedure. The reconstruction reveals a sharply localized central peak of approximately −1.5×105 fm−3, with a...
- Physics & SpaceOpen access
Proton mechanical forces structure revisited: Insights from Patterson function analysis
This study applies Patterson function analysis to gravitational form factors to reconstruct the proton’s mechanical force distribution. The resulting density profile is strictly positive and sharply localized, with a half‑maximum radius of 0.109 fm that defines the proton’s compa...
- Physics & SpaceOpen access
Reconstructed proton mass/energy structure: Insights from Patterson function analysis
This study employs the gravitational form factor Ai of the proton to reconstruct its internal mass/energy distribution using Patterson function analysis combined with a scaling procedure. The reconstruction reveals a sharply localized central peak, reaching 47 400 fm⁻³, with a ha...