Experiments Create Particles Out of a Vacuum Using Neutrinos

BarbaraHudson writes: In a new series of experiments, scientists report (abstract) that neutrinos, notable for how infrequently they interact with matter, can strike a glancing blow on an atom's nucleus, and the side effect is the generation of a new particle out of a vacuum. Professor Kevin McFarland says the creation of the new particle is what shields the nucleus from being blown apart by the collision. "Producing an entirely new particle – in this case a charged pion – requires much more energy than it would take to blast the nucleus apart – which is why the physicists are always surprised that the reaction happens as often as it does. McFarland adds that even painstakingly detailed theoretical calculations for this reaction 'have been all over the map.'"

Comments

Horrible Summary

[forand]

The summary is horribly incorrect. There are no new experiments, only new analysis of old experiments. The authors didn't actually do the experiments but "digitize and reanalyze data from both experiments." The summary didn't include the non-paywalled version of the article on arXiv. The summary sensationalizes the results with phrases like "[p]roducing an entirely new particle." (ok it is a quote) which leads non-physicist readers to think this is a new particle as yet unseen when in fact all particles involved are well known. Furthermore, pulling a particle out of the vacuum, especially near such massive and charged objects a nuclei is not at all uncommon. Sure it is a non-electromagnetic process but it isn't odd.