Incoherent pion production in neutrino-deuteron interactions
Incoherent pion production in neutrino-deuteron interactions
复制标题
中微子-氘核相互作用中不相干的π介子产生
DOI：
10.1103/physrevc.91.035203
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
T. Sato and T. -S. H. Lee
中科院分区：
文献类型：
--
作者：
Jia-Jun Wu;T. Sato and T. -S. H. Lee
在多重散射公式下，研究了中微子-中子核反应中共振能量附近的非相干介子的产生。计算包括冲量项和核子-核子、π-核子末态相互作用的单圈贡献。核子上的散射和电弱介子产生反应的输入幅度是由一个动力学模型产生的，该模型描述了非常广泛的散射数据以及核子上的电磁和弱介子产生反应。散射幅度是由波恩势产生的。计算过程的有效性是通过给出一个相当好的描述质子上的质子光产生的数据来建立的。然后将所建立的模型应用于预测反应的截面.论证了包括末态相互作用对理解这些中微子--重离子反应的实验数据的重要性。我们的结果强烈地表明，在以前的分析中用来提取核子上的介子产生截面的旁观者近似并不适用于，而是一个很好的近似。
Within the multiple scattering formulation, the incoherent pion production in neutrino-deuteron reactions at energies near theresonance is investigated. The calculations include an impulse term and one-loop contributions from nucleon-nucleonand pion-nucleonfinal-state interactions. The input amplitudes ofscattering and electroweak pion-production reaction on the nucleon are generated from a dynamical model, which describes very extensive data ofscattering and both the electromagnetic and the weak pion-production reactions on the nucleon. Thescattering amplitudes are generated from the Bonn potential. The validity of the calculational procedures is established by giving a reasonably good description of the data of pion photoproduction on the deuteron. The constructed model is then applied to predict the cross sections ofandreactions. The importance of including thefinal-state interactions to understand the experimental data of these neutrino-deuteron reactions is demonstrated. Our results strongly suggest that the spectator approximation used in the previous analyses to extract the pion-production cross sections on the nucleon from the data on the deuteron is not valid for the, but is a good approximation for.