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P_11 Resonance Extracted from pi-N Data and Its Stability
pN scattering amplitude analysis Roper resonance
2011/7/20
We study the stability of resonance poles in pi-N P_11 partial wave, particularly the Roper resonance, by varying parameters significantly within the EBAC dynamical coupled-channels model, keeping a g...
Near-zero-field nuclear magnetic resonance
Near-zero-field nuclear magnetic resonance Atomic Physics
2011/8/3
Abstract: We investigate nuclear magnetic resonance (NMR) in near-zero-field, where the Zeeman interaction can be treated as a perturbation to the electron mediated scalar interaction (J-coupling). Th...
P_11 Resonance Extracted from pi-N Data and Its Stability
P_11 Resonance Extracted pi-N Data Its Stability
2011/7/21
We study the stability of resonance poles in pi-N P_11 partial wave, particularly the Roper resonance, by varying parameters significantly within the EBAC dynamical coupled-channels model, keeping a g...
In the energy domain of 1-2 GeV per nucleon, HADES has measured rare penetrating probes (e+e-) in C+C, Ar+KCl, d+p, p+p and p+Nb collisions. For the first time the electron pairs were reconstructed fr...
Isospin Character of the Pygmy Dipole Resonance in 124Sn
Isospin Character the Pygmy Dipole Resonance 124Sn
2010/12/29
The pygmy dipole resonance has been studied in the proton-magic nucleus 124Sn with the (a,a'g) coincidence method at E=136 MeV. The comparison with results of photon-scattering experiments reveals a s...
K* resonance effects on direct CP violation in B -> pi pi K
K* resonance effects direct CP B -> pi pi K
2010/3/15
Charged and neutral B decays into two charged pions and a charged or a neutral kaon are analyzed within the QCD factorization scheme where final state interactions before and after hadronization are i...
Resonance properties from a coupled channel meson exchange model
pion-nucleon scattering meson exchange model analytic structure of the scattering amplitude
2009/11/24
In this talk, I present the results on the pole structure of pion-nucleon scattering in an analytic model based on meson exchange. The analytic properties of scattering amplitudes provide important in...
A new N* resonance as a hadronic molecular state
three-body bound state Λ(1405)$ resonance kaon-nucleon interaction variational calculation
2009/11/24
We report our recent work on a hadronic molecule state of the KKN system with I=1/2 and JP=1/2+. We assume that the Λ(1405) resonance and the scalar mesons, f0(980), a0(980), are reproduced as quasi-b...
Baryon resonance analysis from SAID
non-strange baryons N(1440) pion-nucleon elastic scattering pion photo- and electro-production
2009/11/17
We discuss the analysis of data from πN elastic scattering and single pion photo- and electroproduction. The main focus is a study of low-lying non-strange baryon resonances. Here we concentrate on so...
A proposed U.S./China theoretical/experimental collaborative effort on baryon resonance extraction
baryon resonances electromagnetic form factors J/ψ production CEBAF Large Acceptance Spectrometer (CLAS) Jefferson Laboratory (JLab)
2009/11/17
In this paper we discuss the reasons for our work towards establishing a new collaboration between Jefferson Lab (JLab) and the Institute of High Energy Physics (IHEP) in Beijing. We seek to combine e...
Strategies for baryon resonance analysis
pion-nucleon scattering meson exchange mode analytic structure of the scattering amplitude
2009/11/17
The analytic properties of scattering amplitudes provide a meeting point for
experimental and theoretical investigations of baryon resonances. Pole positions and residues allow for a parameterization...
Recent results on nucleon resonance electrocouplings from the studies of π+π－p electroproduction with the CLAS detector
nucleon resonances electromagnetic form factors nucleon structure
2009/11/17
Recent results on nucleon resonance studies in π+π－p electro- production off protons with the CLAS detector are presented. The analysis of CLAS data allowed us to determine all essential contributing ...
Nucleon Spin Structure Functions in
the Resonance Region and the Duality
constituent quark model quark-hadron duality nucleon spin
structure function Roper resonance
2007/8/15
2003Vol.39No.6pp.675-680DOI:
Nucleon Spin Structure Functions in
the Resonance Region and the Duality
DONG Yu-Bing and FENG Qing-Guo
Institute of High Energy Physics, Th...
Nucleon Structure Function F2 in the Resonance Region and Quark-Hadron Duality
quark model quark-hadron duality structure functions
2007/8/15
2003Vol.39No.2pp.193-196DOI:
Nucleon Structure Function F2 in the Resonance Region and Quark-Hadron Duality
DONG Yu-Bing1 and LI Ming-Fei2
1 Institute of High Energy Phy...
Helicity Dependence of the \vecg\vec N \to p N Reaction Channels in the D-Resonance Region
photoproduction reactions meson production polarization phenomena in reactions
2010/4/9
Based on a prior effective Lagrangian model on single pion photoproduction from the nucleon, successfully tested in total and differential cross sections, the helicity dependence from the interaction ...