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arXiv 1202.0769nucl-th
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高能电子-核散射中的介子产生

Meson production in high-energy electron-nucleus scattering

Göran Fäldt

摘要:

赝标介子可以在高能电子-核散射中产生和研究。我们回顾和扩展了我们以前对核库仑场中介子产生的分析。$P\rightarrow γγ$的衰变率是最直接确定的介子产生的双库仑区,其中两个光子几乎是真实的,并提供背景强子的贡献仍然很小。介子的质量越大,确保这种条件所需的电子能量就越高。

英文摘要:

Pseudoscalar mesons can be produced and studied in high-energy electron-nucleus scattering. We review and extend our previous analysis of meson production in the nuclear Coulomb field. The $P\rightarrow γγ$ decay rates are most directly determined for mesons produced in the double-Coulomb region where both photons are nearly real, and provided the background-hadronic contribution remains small. The larger the mass of the meson the higher the electron energy needed to assure such a condition.

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