论文标题
在非常大的内部动量处探测杜特隆
Probing the Deuteron at Very Large Internal Momenta
论文作者
论文摘要
$^{2} \ mathrm {h}（e，e'p）n $交叉部分以4个摩托车传输为$ q^{2} = 4.5 \ pm 0.5 $（gev/c）$ q^{gev/c）$^{2} $ neutron Recoil Momenta，$ p _ sim1 $ { GEV/c。数据是在固定中子后坐力角度$θ_{nq} = 35^\ circ $，$ 45^\ circ $和$ 75^{\ circ} $相对于3-momentum传输$ \ vec q $。新数据与以前达到$ p _ {\ mathrm {r}}} \ sim500 $ mev/c的数据非常吻合。在$θ_{nq} = 35^\ circ $和$ 45^\ circ $，最终状态互动（FSI），梅森交换电流（MEC）和等轴电流（IC）（IC）被抑制，并且平面波脉冲脉冲近似（PWIA）提供了主要的横截面贡献。将新数据与最新的理论计算进行了比较，在该计算中，我们观察到缺少动量的$ p _ {\ mathrm {r}}> 700 $ MEV/c/c。
$^{2}\mathrm{H}(e,e'p)n$ cross sections have been measured at 4-momentum transfers of $Q^{2} = 4.5 \pm 0.5$ (GeV/c)$^{2}$ over a range of neutron recoil momenta, $p_{\mathrm{r}}$, reaching up to $\sim1.0$ GeV/c. The data were obtained at fixed neutron recoil angles $θ_{nq} = 35^\circ$, $45^\circ$ and $75^{\circ}$ with respect to the 3-momentum transfer $\vec q$. The new data agree well with previous data which reached $p_{\mathrm{r}}\sim500$ MeV/c. At $θ_{nq} = 35^\circ$ and $45^\circ$, final state interactions (FSI), meson exchange currents (MEC) and isobar currents (IC) are suppressed and the plane wave impulse approximation (PWIA) provides the dominant cross section contribution. The new data are compared to recent theoretical calculations, where we observe a significant discrepancy for missing momenta $p_{\mathrm{r}}>700$ MeV/c.
