We present the first accurate results of measurements of the tensor analyzing power component \(T_{20}\) for the coherent neutral pion photoproduction on the deuteron. The measurements were performed at the Budker Institute of Nuclear Physics at VEPP-3 storage ring using the internal tensor polarized deuterium target. The measurements cover the region of photon energy from 200 to 450 MeV and the region of the center-of-mass pion polar angle from 100 to 140 degrees. The results obtained are compared with predictions of several theoretical models.

中文翻译：

---

测量反应$$ \ gamma d \ rightarrow d \ pi ^ 0 $$$γd→dπ的张量分析能力$$ T_ {20} $$ T 20

我们给出了氘核上相干中性介子光产生的张量分析功率分量\（T_ {20} \）的测量结果的第一个准确结果。测量是在Budker核物理研究所在VEPP-3存储环上使用内部张量极化的氘靶进行的​​。测量覆盖了200到450 MeV的光子能量区域和100到140度的质子中心离子极角区域。将获得的结果与几种理论模型的预测结果进行比较。