Observation of Anomalous Internal Pair Creation in $^8$Be: A Possible Signature of a Light, Neutral Boson · HackerPapers discussions

Observation of Anomalous Internal Pair Creation in $^8$Be: A Possible Signature of a Light, Neutral Boson — mentioned by danielmorozoff

Wed, 17 Aug 2016 23:18:15 GMT

Link to PRL preprint in the article Or here: https://arxiv.org/abs/1504.01527

Paper and discussion history. A mention is not an endorsement.

Observation of Anomalous Internal Pair Creation in $^8$Be: A Possible Signature of a Light, Neutral Boson — mentioned by gus_massa

Wed, 25 May 2016 15:31:02 GMT

One of the difficult part of reading the press articles is to understand what the scientific really saw in the experiment. The original paper is https://arxiv.org/abs/1504.01527 The important graph is figure 4 in page 4. I made a colored version: http://imgur.com/Mya66KZ The black circles are the experimental data. That's what they really saw. (Actually, these measures are very indirect and noisy, so this is the data after a lot of processing, but let's assume that this is standard incontrovertible processing.) Each measurement has an experimental error, that is marked by the + cross in each…

Paper and discussion history. A mention is not an endorsement.

Observation of Anomalous Internal Pair Creation in $^8$Be: A Possible Signature of a Light, Neutral Boson — mentioned by yk

Wed, 25 May 2016 13:25:09 GMT

Looking quickly through the two papers mentioned [0, 1], there is a (statistically) very solid result that something is going on with 8Be, which is only very barely a nucleus and is probably better thought of as a bound state of two alpha particles. In [0] there is a experimental observation of some kind of effect which can be explained by a 17 MeV boson. [1] looks at other experiments and finds a way around current experimental bounds by building a "protophobic" model, that is a boson that does not interact with protons. Interestingly they find that in this model they can explain the…

Paper and discussion history. A mention is not an endorsement.