Measurement of the pi0 -> e+e-gamma Dalitz decay at the Mainz Microtron
Abstract
The Dalitz decay pi0 -> e+e-gamma has been measured in the gamma p -> pi0 p reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The value obtained for the slope parameter of the pi0 electromagnetic transition form factor, api = 0.030+/-0.010tot, is in agreement with existing measurements of this decay and with recent theoretical calculations. The uncertainty obtained in the value of api is lower than in previous results based on the pi0 -> e+e-gamma decay.
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