Speaker
Description
The axion is a hypothetical particle associated with a possible solution to the strong CP problem and is a leading candidate for dark matter. In this talk we investigate the emission of axions by electrons accelerated by intense laser beams. We find the emission probability and energy within the WKB approximation for an electron accelerated by an electromagnetic field. As an application, we estimate the number of axions produced by electrons accelerated using two counterpropagating high-intensity lasers and discuss how they would be converted to photons to be detected. We find that, under realistic experimental conditions, competitive model-independent bounds on the coupling between the axion and the electron could be achieved in such an experiment. We compare the results with axion emission from intense lasers or FELs interacting with magnetic or electric fields. Finally, we investigate the possibility of parametric decay of a laser beam into a lower energy beam and an axion.
| Working group | WG7 |
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