线极化laser场中正电子偶素产生μ子对
Muon pair creation from positronium in a linearly polarized laser field
摘要：
研究了电子偶素通过与线偏振的超强激光场相互作用衰变为μ子-反μ子对的过程。在近红外频率范围内，所需的最小激光强度为10^22 W/cm ^2。在激光修饰的量子电动力学框架内，计算了场-自由电子-正电子湮灭成μ子的总反应速率，并将其与湮灭截面联系起来。μ子是用超相对论能量产生的，并沿激光传播方向以窄角度发射。的μ子的动力学性质的解释在一个经典的简单的人的模型的生产过程。我们表明，最有前途的设置的过程中的实验研究采用两个对向传播的激光束撞击在一个正电子素目标，相干电子-正电子碰撞的优势变得明显。
英文摘要：
Positronium decay into a muon-antimuon pair by virtue of the interaction with a superintense laser field of linear polarization is considered. The minimum laser intensity required amounts to a few 10^22 W/cm^2 in the near-infrared frequency range. Within the framework of laser-dressed quantum electrodynamics, the total reaction rate is calculated and related to the cross section for field-free electron-positron annihilation into muons. The muons are created with ultrarelativistic energies and emitted under narrow angles along the laser propagation direction. The dynamical properties of the muons are interpreted in terms of a classical simple man's model for the production process. We show that the most promising setup for an experimental investigation of the process employs two counterpropagating laser beams impinging on a positronium target, where the advantage of the coherent electron-positron collisions becomes evident.
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