Search for dark photon production at BaBar

Abstract

We present a search for a dark photon, a new massive vector boson interacting weakly with Standard Model particles, using data collected with the BaBar detector. No statistically significant deviations from the Standard Model predictions are seen, and 90% confidence level upper limits on the mixing strength between the photon and dark photon are set at the level of 10^(-4)–10^(-3) for dark photon masses in the range 0.02 – 10.2 GeV.

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