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The low-lying even-parity states of the nucleon are explored in lattice QCD using the PACS-CS collaboration 2+1-flavor dynamical-QCD gauge-field configurations made available through the International...
The lightest N∗ state, N(1440) P11, also known as Roper resonance, has puzzled physicists for decades. A large variety of theoretical models aimed to understand its properties have been proposed...
The low-lying even-parity states of the nucleon are explored in lattice QCD using the PACS-CS
collaboration 2+1-flavor dynamical-QCD gauge-field configurations made available through the In-ternation...
Lattice results on nucleon/roper properties
nucleon excited spectroscopy electric and magnetic form factor transposition form factor
2009/11/24
In this proceeding, I review the attempts to calculate the Nucleon resonance (including Roper as first radially excited state of nucleon and other excited states) using lattice quantum chromodynamics ...
J/Ψ衰变的Roper共振态结构的研究
Roper共振态结构 混杂态 J/Ψ
2010/2/23
通过J/Ψ→p, p*, N**衰变,研究了Roper共振态的混杂态结构对衰变角分布和分支比的影响. 计算结果表明,如果Roper共振态为纯混杂态,那么J/Ψ→p*, N**的角分布几乎相等, 而J/Ψ衰变到混杂态的衰变宽度还不到J/Ψ→p 的1%， 给出了Γ(J/Ψ→ N* )/Γ(J/Ψ→p)和Γ(J/Ψ→ N**)/Γ(J/Ψ→ p)随混合参数的变化关系, 并讨论了在J...