Empirical Fit to Inelastic Electron-Deuteron and Electron-Neutron Resonance Region Transverse Cross Sections
Empirical Fit to Inelastic Electron-Deuteron and Electron-Neutron Resonance Region Transverse Cross Sections
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非弹性电子-氘核和电子-中子共振区域横截面的经验拟合
DOI：
10.1103/physrevc.77.065206
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发表时间：
2007
影响因子：
3.1
通讯作者：
M. Christy
中科院分区：
文献类型：
--
作者：
P. Bosted;M. Christy
本文描述了在四动量转移$0\leQ^2 <10 $$GeV$^2 $和末态不变质量$1.2<3$ GeV的运动学范围内，电子-氘核非弹性散射截面测量的经验拟合.氘核的拟合依赖于质子纵横截面比R_p的拟合和假设R_p=R_n。基本的拟合参数描述了质子和中子的平均截面，用平面波脉冲近似（PWIA）拟合氘数据。MAID 2007的伪数据被用来约束$W<1.2$ GeV的平均核子截面。数据与拟合的平均偏差为3%，小于5%的数据点偏离拟合超过10%。
An empirical fit is described to measurements of inclusive inelastic electron-deuteron cross sections in the kinematic range of four-momentum transfer $$0 \le Q^2<10$$ GeV$^2$ and final state invariant mass $1.2<3$ 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 (PWIA) used to fit to the deuteron data. Pseudo-data from MAID 2007 were used to constrain the average nucleon cross sections for $W<1.2$ GeV. The mean deviation of data from the fit is 3\%, with less than 5\% of the data points deviating from the fit by more than 10\%.