The Two photon particle production mechanism. Physical problems. Applications. Equivalent photon approximation
The Two photon particle production mechanism. Physical problems. Applications. Equivalent photon approximation
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DOI：
10.1016/0370-1573(75)90009-5
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
V. M. Budnev;I. Ginzburg;G. V. Meledin;V. Serbo
中科院分区：
文献类型：
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作者：
V. M. Budnev;I. Ginzburg;G. V. Meledin;V. Serbo
本文综述了双光子粒子产生的物理过程及其应用。本文讨论了两个主要问题：一是从强子的双光子产生研究中能发现什么以及如何发现;二是如何利用轻子的双光子产生。详细讨论了提取γγ → h（强子）跃迁-ee → eeh反应信息的基本方法。特别地，我们讨论了从相关实验中可以提取哪些关于γγ → h跃迁的信息以及如何提取。其中一个研究在强子动力学和光强子相互作用物理学中的哪些问题可以通过这样的研究来回答。着重指出它们的主要特点是可以研究振幅对碰撞粒子（光子）的能量和质量的依赖关系，并讨论了双光子轻子产生在实验高能物理中的应用（形状因子的研究、寻找某些前向散射振幅的真实的部分、一些辅助问题等）。应用于寻找新的（假设）粒子被认为是。一些重要的微分分布。得到了不同实验条件下的截面估计。本文对等效光子近似作了批判性的讨论。
This review deals with the physics of two-photon particle production and its applications. Two main problems are discussed first, what can one find out from the investigation of the two-photon production of hadrons and how, and second,how can the two-photon production of of leptons be used?The basic method for extracting information on the γγ → h (hadrons) transition — the ee → eeh reaction — is discussed in detail. In particular, we discuss what information on the γγ → h transition can be extracted from the related experiments and how it can be done. One examines which questions in hadrodynamics and photohadron interaction physics can be answered by such investigations. It is emphasized that their main peculiarity is the possibility of investigating dependence of the amplitude on the energy as well as on the masses of both colliding particles (photons).The applications of two-photon lepton production in experimental high energy physics are discussed (the form factor investigation, the search for the real part of some forward scattering amplitudes, some auxiliary problems, etc.). Applications to the search for new (hypothetical) particles are considered.A number of important differential distributions are given. Cross section estimations for different for different experimental set ups are obtained. A critical discussion of the equivalent photon approximation is given.