This must have been some time ago. The Heidelberg-Moscow signal was twenty years ago, was never anywhere close to 7 sigma, was never believed by anyone that wasn’t an author on the result (for various solid reasons), and has been ruled out definitively by other measurements since then. So, the current situation is that there is no experimental basis to suggest a Majorana or Dirac nature of the neutrino, and I don’t think anyone in the field would say otherwise.
It was a Daily Mail article. That’s about par for them.
Or better yet, don’t ever read anything from that source. Except for amusment purposes only. But if they claim the sun is going to rise in the east tomorrow, double check with at least three other sources to make sure.
Yeah, it wasn’t quite 20 years ago, but it’d be close to that, by now. And the audience member raising the objection might well have been one of those authors-- He certainly seemed to have a personal stake in the matter. Anyway, my response now is the same as it was then: Here are both models, and I won’t say which one is correct.
I think I stumbled on the whole story beginning from Google News. Daily Mail is what was served up. Blame Google, not me!
Give me some credit, please. I then tracked down stories in physicsworld.com and elsewhere.
And it was New Scientist — are they as bad as Daily Mail? — which wrote of “a topsy-turvy universe [where] time runs backwards.” Even stipulating that this experiment didn’t show that, I’ve wondered how particles arriving at Earth would “appear” to us, if they came from a hypothetical source with a reversed causality arrow.