~ 3 He的硬光衰变
Hard Photodisintegration of 3He
摘要：
在硬再散射模型（HRM）的框架下，研究了3 He核的两核子大角度光衰变。在HRM中，入射光子被一个核子的价夸克吸收，然后与第二个核子的价夸克发生硬再散射反应，产生两个以大横动量出现的核子。通过输入pp和pn弹性散射的实验截面，计算了pp和pn破裂通道的无参数截面。计算的聚丙烯破裂截面及其预测的能量依赖性与最近的实验数据吻合得很好。观众动量分布和螺旋度传输的预测。
英文摘要：
Large angle photodisintegration of two nucleons from the 3He nucleus is studied within the framework of the hard rescattering model (HRM). In the HRM the incoming photon is absorbed by one nucleon's valence quark that then undergoes a hard rescattering reaction with a valence quark from the second nucleon producing two nucleons emerging at large transverse momentum . Parameter free cross sections for pp and pn break up channels are calculated through the input of experimental cross sections on pp and pn elastic scattering. The calculated cross section for pp breakup and its predicted energy dependency are in good agreement with recent experimental data. Predictions on spectator momentum distributions and helicity transfer are also presented.
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