| | |
| | |
Stat |
Members: 3645 Articles: 2'506'133 Articles rated: 2609
27 April 2024 |
|
| | | |
|
Article overview
| |
|
Axions 05 | Pierre Sikivie
; | Date: |
20 Sep 2005 | Subject: | hep-ph | Abstract: | The Strong CP Problem and its resolution through the existence of an axion are briefly reviewed. The combined constraints from accelerator searches, the evolution of red giants and the duration of the SN 1987a neutrino pulse require the axion mass $m_a$ to be less than $3 cdot 10^{-3}$ eV. On the other hand, the requirement that the axion does not overclose the universe implies a lower bound on $m_a$ of order $10^{-6}$ eV. This lower bound can, however, be relaxed in a number of ways. If $m_a$ is near the lower bound, axions are an important contribution to the energy density of the universe in the form of (very) cold dark matter. Dark matter axions can be searched for on Earth by stimulating their conversion to microwave photons in an electromagnetic cavity permeated by a magnetic field. Using this technique, limits on the local halo density have been placed by the Axion Dark Matter eXperiment. I’ll give a status report on ADMX and its upgrade presently under construction. I’ll also report on recent results from solar axion searches and laser experiments. | Source: | arXiv, hep-ph/0509198 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |