Speaker
Ms
Wei Wu
(Imperial College London)
Description
A recent experiment on the Gemini laser facility at the Rutherford Appleton Laboratory collided intense beams of high-energy photons (~500 MeV) with a dense X-ray eld (~1.5 keV) to investigate the final QED process involving photons which has not been directly observed, the Breit-Wheeler process. The BW process has been well studied in QED so we are exploring how to use the results of these experiments to investigate how processes involving particles beyond the Standard Model, e.g. the axion, affect the expected results. We have calculated the cross sections of two axion-involved processes using effective field theory and will discuss how the effective mass value of the axion, the coupling parameters, and the signicance of the cross sections compare with the BW process. We can use these results to predict departures from the expected BW pair-production rate in the experiment and aim to use these and the experimental analysis to exclude some of the axion models.
Primary author
Ms
Wei Wu
(Imperial College London)
