论文标题
反应中的极化现象$ e^ + + e^ - \ to p + \ bar p +π^0 $在非共振机制的框架中
Polarization phenomena in the reaction $e^+ + e^- \to p + \bar p +π^0$ in frame of the non-resonant mechanism
论文作者
论文摘要
核子极化在反应$ e^ + + e^ - \ to n + \ bar {n} +π^0 $上的依赖性在非谐振机制的帧中的不同不变变量。假设强体电磁电流和强子电磁相互作用的P不变性，则以六个不变复合物幅度表示核子极化。当考虑到质子（或抗蛋白酶）和乳头时，考虑到包含的实验设置。使用核子电磁形式的特定参数化，在能量范围内对所谓的正常极化进行了数值估计，并考虑到了先前计算的非谐音机制的未偏差横截面。
The dependence of the nucleon polarization in the reaction $e^+ + e^- \to N + \bar{N} +π^0 $ over different invariant variables in frame of the non-resonant mechanism, has been derived. The nucleon polarization is expressed in terms of six invariant complex amplitudes, assuming the conservation of the hadron electromagnetic currents and the P-invariance of the hadron electromagnetic interaction. An inclusive experimental setup when the proton (or the antiproton) and the pion are detected in coincidence is considered. Numerical estimations were performed for the so called normal polarization in the energy range from threshold up to $s=16$ GeV$^2$, using a specific parametrization of the nucleon electromagnetic form factors and taking into account the unpolarized differential cross section of the non-resonant mechanism, as previously calculated.
