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arXiv 0711.0159hep-ph
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非弹性电子-氘和电子-中子共振区截面的经验拟合

Empirical Fit to Inelastic Electron-Deuteron and Electron-Neutron Resonance Region Transverse Cross Sections

P. E. Bosted, M. E. Christy

摘要:

在四动量转移$0 \le Q^2<10$ GeV的$^2$和末态不变质量$1.1<W<3.2$ GeV的运动学范围内,对电子-氘截面的测量进行了经验拟合.氘核拟合依赖于质子纵、横截面之比$R_p$的拟合和假设$R_p=R_n$。基本的拟合参数描述了质子和中子的平均截面,并使用平面波冲量近似来拟合氘核数据。附加项用于填充准弹性峰值和$Δ(1232)$共振之间的下降。数据与拟合的平均偏差为3%,小于4%的数据点偏离拟合超过10%。

英文摘要:

An empirical fit is described to measurements of inclusive inelastic electron-deuteron cross sections in the kinematic r ange of four-momentum transfer $0 \le Q^2<10$ GeV$^2$ and final state invariant mass $1.1<W<3.2$ GeV. The deuteron fit relies on a fit of the ratio $R_p$ of longitudinal to transverse cross sections for the proton, and the assumption $R_p=R_n$. The underlying fit parameters describe the average cross section for proton and neutron, with a plane-wave impulse approximation used to fit to the deuteron data. An additional term is used to fill in the dip between the quasi-elastic peak and the $Δ(1232)$ resonance. The mean deviation of data from the fit is 3%, with less than 4% of the data points deviating from the fit by more than 10%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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