Research on Axion Discovered by P L Jain & G Singh from UB SUNY

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Discussion Overview

The discussion revolves around the research conducted by P L Jain and G Singh from the University at Buffalo regarding the axion, a theoretical particle that some propose as a candidate for dark matter. Participants examine the validity of the findings presented in their paper, focusing on statistical significance and the implications of axion properties.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants reference the publication of Jain and Singh's research in the British Journal of Physics and highlight its significance in theoretical physics.
  • A humorous comment about axions is made, linking to an older article that discusses the concept of axions without mentioning the recent discovery.
  • One participant expresses skepticism about the statistical significance of the findings, questioning the clarity of the figures presented and the lack of quantification regarding statistical significance and systematic errors.
  • This same participant conducts a rough statistical analysis, suggesting that the observed effect may not meet the conventional threshold for discovery in particle physics.
  • Another participant raises a point of confusion regarding the stability of axions as candidates for dark matter, contrasting this with the short half-lives of particles involved in the experiment.

Areas of Agreement / Disagreement

Participants exhibit disagreement regarding the validity of the research findings, particularly concerning statistical significance and the properties of axions. No consensus is reached on the implications of the study or the interpretation of the results.

Contextual Notes

Limitations noted include the lack of systematic error analysis in the research paper and the potential misunderstanding of axion stability in relation to dark matter theories.

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The Jan. 2007 issue of the British Journal of Physics G: Nuclear and Particle Physics is publishing the research of P L Jain and G Singh from the University at Buffalo, The State University of New York.

http://www.iop.org/EJ/abstract/0954-3899/34/1/009
Read it for free before they make you pay for it!

Frank Wilczek is claimed to have once said something like:
Discovering the axion will be one of the greatest triumphs for theoretical physics.
 
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What did the bartender say to the axion?

No charge :)

You can read about what the axion is:
http://physicsweb.org/articles/news/8/11/13/1

(Note that this is MUCH older article dating from 2004 so it does NOT mention the discovery.)
 
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I am not very impressed with the paper. Looking at their figures it is very difficult to see how they can see any statistically significant peaks at all. for example, fig 4b looks like it has peaks all over the place, indicating that the statistical significance is bad. Unfortunately they don't give any quantification of the statistical significance (or indeed account for systematic errors).

Doing a naive statistical analysis myself, there are 1163 events so there are roughly 116 events in the 7MeV 'peak'. Statistically (and naively) we might expect this to have an error of [tex]\sqrt{116} = 10.75[/tex]. The fit looks to be about 6% at this value, which is about 70 events, so this looks like a 4.2 standard deviation effect.

Normally one needs 5 standard deviations for a discovery, and my estimate was very rough and excluded systematic errors.

Also, what is their justification for attributing these 'escesses' with axions?
 
There is one aspect to this question that I find very confusing. Axions are considered by some to be a candidate for dark matter, which requires them to be stable. However the experiment is about particles with extremely short half lives. Something is wrong!
 

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