By employing the parametrization form of the nucleon spin structure function in the resonance region,which includes the contributions of the resonance peaks and of nonresonance background, we study Bloom-Gilman quark-...By employing the parametrization form of the nucleon spin structure function in the resonance region,which includes the contributions of the resonance peaks and of nonresonance background, we study Bloom-Gilman quark-hadron duality of g1 both in the inelastic resonance region and elastic one.展开更多
We discuss the consequence of local duality for elastic scattering, and derive a model-independent equation between structure functions at x ～ 1 and elastic electromagnetic form factors. Then the electromagnetic form...We discuss the consequence of local duality for elastic scattering, and derive a model-independent equation between structure functions at x ～ 1 and elastic electromagnetic form factors. Then the electromagnetic form factors of proton are discussed using the quark-hadron duality theory. We also debate the form factor of proton in a bound state.It may be an effective approach to study the form factor of proton in media.展开更多
我们在中子星的内部在阶段转变，状态(曙光女神) 的方程，和相应集体半径的关系上学习模型参数的影响。数字分析证明重核子的联合常数在阶段上有细微影响转变和曙光女神，而是对粒子部分的明显的影响当袋子常数 B 和联合经常的 g 在阶...我们在中子星的内部在阶段转变，状态(曙光女神) 的方程，和相应集体半径的关系上学习模型参数的影响。数字分析证明重核子的联合常数在阶段上有细微影响转变和曙光女神，而是对粒子部分的明显的影响当袋子常数 B 和联合经常的 g 在阶段转变， EOS，和集体半径的关系上有重要影响时。我们发现那两个袋子常数 B 和联合的经常的 g 玩在对在混血儿的夸克之间的相互作用的描述的一样的角色担任主角。使用袋子常数计算的最大的团与试验性的数据决定了(从 175 ～ 200 兆电子伏) 在 1.4 ～的间隔的下降 1.7 太阳的质量。相应半径在结果与中子星的观察价值一致的 9.3 和 12 km.These 之间。第三个家庭的存在的可能性被讨论。第三个家庭的察觉可以在中子星内为阶段转变提供签名。展开更多
We discuss the nucleon spin structure function gl and the difference between the proton and neutrontargets gp1 - gn1 , based on quark model calculation. Quark-hadron duality for the nucleon spin structure function is ...We discuss the nucleon spin structure function gl and the difference between the proton and neutrontargets gp1 - gn1 , based on quark model calculation. Quark-hadron duality for the nucleon spin structure function is alsoanalyzed. Effects of the △(1232) and Roper P11(1440) resonances on the spin structure function and on the differencegn1 - gn1 are mentioned. The results of different models for the Roper resonance are also addressed.展开更多
文摘By employing the parametrization form of the nucleon spin structure function in the resonance region,which includes the contributions of the resonance peaks and of nonresonance background, we study Bloom-Gilman quark-hadron duality of g1 both in the inelastic resonance region and elastic one.
文摘We discuss the consequence of local duality for elastic scattering, and derive a model-independent equation between structure functions at x ～ 1 and elastic electromagnetic form factors. Then the electromagnetic form factors of proton are discussed using the quark-hadron duality theory. We also debate the form factor of proton in a bound state.It may be an effective approach to study the form factor of proton in media.
基金Supported by the National Natural Science Foundation of China under Grant Nos 90103020 and 10475088, the Knowledge Innovation Project of Chinese Academy of Sciences under Grant No KC2-SW-N02, and the Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator.
文摘三质子旋转结构功能 g (1 ) 的夸克强子两重性， g (2 ) andg (T) 同时被讨论。这被发现夸克强子两重性 ofg (1 ) 的发作(p) ， g (2 )(p) 和 g (T)(p) 是类似的，他们被期望在大约 Q (2 ) 类似的 to2GeV (2 ) 。另外，我们的结果证明有弹性的山峰显著地打破本地 quark-hadronduality。
基金The project supported by National Natural Science Foundation of China under Grant Nos. 10047001 and 10275029, the State Key Basic Reserch Development Program under Grant No, G2000-0774-07, and the CAS Knowledge Innovation Project under Grant No. KJCX2-N11
文摘我们在中子星的内部在阶段转变，状态(曙光女神) 的方程，和相应集体半径的关系上学习模型参数的影响。数字分析证明重核子的联合常数在阶段上有细微影响转变和曙光女神，而是对粒子部分的明显的影响当袋子常数 B 和联合经常的 g 在阶段转变， EOS，和集体半径的关系上有重要影响时。我们发现那两个袋子常数 B 和联合的经常的 g 玩在对在混血儿的夸克之间的相互作用的描述的一样的角色担任主角。使用袋子常数计算的最大的团与试验性的数据决定了(从 175 ～ 200 兆电子伏) 在 1.4 ～的间隔的下降 1.7 太阳的质量。相应半径在结果与中子星的观察价值一致的 9.3 和 12 km.These 之间。第三个家庭的存在的可能性被讨论。第三个家庭的察觉可以在中子星内为阶段转变提供签名。
文摘We discuss the nucleon spin structure function gl and the difference between the proton and neutrontargets gp1 - gn1 , based on quark model calculation. Quark-hadron duality for the nucleon spin structure function is alsoanalyzed. Effects of the △(1232) and Roper P11(1440) resonances on the spin structure function and on the differencegn1 - gn1 are mentioned. The results of different models for the Roper resonance are also addressed.
