> What paper should I be reading that more or less summarizes the mechanism at work? As to the NASA paper, it's yet to be published according to the linked art

> What paper should I be reading that more or less summarizes the mechanism at work? As to the NASA paper, it's yet to be published according to the linked article, but publication is imminent. And the mechanism is not clear, only the measurement (which remains a topic of debate). The possibility remains, because of the small size of the effect being measured, that it has a pedestrian explanation, not new physics. It's essential to keep this in mind.