| Signatures of a hidden cosmic microwave background. | |
| | |
MedLine Citation:
|
PMID: 18851438 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
If there is a light Abelian gauge boson gamma' in the hidden sector its kinetic mixing with the photon can produce a hidden cosmic microwave background (HCMB). For meV masses, resonant oscillations gamma<-->gamma' happen after big bang nucleosynthesis (BBN) but before CMB decoupling, increasing the effective number of neutrinos Nnu(eff) and the baryon to photon ratio, and distorting the CMB blackbody spectrum. The agreement between BBN and CMB data provides new constraints. However, including Lyman-alpha data, Nnu(eff) > 3 is preferred. It is tempting to attribute this effect to the HCMB. The interesting parameter range will be tested in upcoming laboratory experiments. |
| | |
Authors:
|
Joerg Jaeckel; Javier Redondo; Andreas Ringwald |
Related Documents
:
|
2701398 - Microbiological safety of irradiated foods. 9737428 - Mutagenicity and dna-damaging activity of decomposed products of food colours under uv ... 8737848 - Comparison between irradiated and thermally pasteurized liquid egg white on functional,... 16804558 - Evaluation of external radiation dosimetry records at the savannah river site, 1951-1989. 17917758 - Acute toxicity of waterborne cd, cu, pb, ni, and zn to first-instar chironomus riparius... 15313768 - Bird calls: their potential for behavioral neurobiology. |
Publication Detail:
|
Type: Journal Article Date: 2008-09-26 |
Journal Detail:
|
Title: Physical review letters Volume: 101 ISSN: 0031-9007 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2008 Sep |
Date Detail:
|
Created Date: 2008-10-14 Completed Date: 2008-11-04 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
|
Languages: eng Pagination: 131801 Citation Subset: - |
Affiliation:
|
Institute for Particle Physics and Phenomenology, Durham University, Durham DH1 3LE, United Kingdom. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Unparticle example in 2D.
Next Document: Measurement of neutrino oscillations with the MINOS detectors in the NuMI beam.