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arXiv 0909.4663hep-phphysics.optics
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高功率激光探测真空中光子-光子散射对QED和非标准模型的精度检验

Precision tests of QED and non-standard models by searching photon-photon scattering in vacuum with high power lasers

Daniele Tommasini, Albert Ferrando, Humberto Michinel, Marcos Seco

摘要:

我们研究了如何在目前的几拍瓦激光装置如HERCULES中寻找真空中的光子-光子散射,并测试量子电动力学和非标准模型如Born-Infeld理论或涉及微荷电粒子或类轴子玻色子的场景。首先,我们计算了在任意偏振情况下,超强激光束与低功率光束相交时产生的相移。然后使用该结果来设计对低能量有效光子拉格朗日量中出现的所有参数的完整测试。事实上,我们提出了一组实验,可以在大力神,最终允许检测光子-光子散射由于新的物理,或设置新的限制的相关参数,提高了几个数量级的PVLAS合作最近获得的当前约束。我们还描述了一个多交叉的光学机制,可以进一步提高灵敏度,使大力神探测光子-光子散射,即使在一个小的速率,如QED预测。最后,我们讨论了如何在未来的艾瓦设施,如ELI,这些结果可以得到改善,从而提供了一个新的类别的精度测试的标准模型和超越。

英文摘要:

We study how to search for photon-photon scattering in vacuum at present petawatt laser facilities such as HERCULES, and test Quantum Electrodynamics and non-standard models like Born-Infeld theory or scenarios involving minicharged particles or axion-like bosons. First, we compute the phase shift that is produced when an ultra-intense laser beam crosses a low power beam, in the case of arbitrary polarisations. This result is then used in order to design a complete test of all the parameters appearing in the low energy effective photonic Lagrangian. In fact, we propose a set of experiments that can be performed at HERCULES, eventually allowing either to detect photon-photon scattering as due to new physics, or to set new limits on the relevant parameters, improving by several orders of magnitude the current constraints obtained recently by PVLAS collaboration. We also describe a multi-cross optical mechanism that can further enhance the sensitivity, enabling HERCULES to detect photon-photon scattering even at a rate as small as that predicted by QED. Finally, we discuss how these results can be improved at future exawatt facilities such as ELI, thus providing a new class of precision tests of the Standard Model and beyond.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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