Search for solar axion emission from {sup 7}Li and D(p, γ){sup 3}He nuclear decays with the CAST γ-ray calorimeter

Journal Article · Mon Mar 01 00:00:00 EST 2010 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2010/03/032· OSTI ID:22272838

Andriamonje, S.; Aune, S.; Dafni, T.; Ferrer-Ribas, E. ^[1]; Autiero, D.; Barth, K.; Davenport, M.; Lella, L. Di ^[2]; Belov, A. ^[3]; Beltrán, B.; Carmona, J. M.; Cebrián, S. ^[4]; Bräuninger, H.; Englhauser, J.; Friedrich, P. ^[5]; Collar, J. I. ^[6]; Eleftheriadis, C. ^[7]; Fanourakis, G. ^[8]; Fischer, H.; others, and

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1. DAPNIA, Centre d'Études Nucléaires de Saclay, Gif-sur-Yvette (France)
2. European Organization for Nuclear Research (CERN),CH-1211 Genève 23 (Switzerland)
3. Institute for Nuclear Research, Russian Academy of Sciences, Moscow (Russian Federation)
4. Instituto de Física Nuclear y Altas Energías, Universidad de Zaragoza, Zaragoza (Spain)
5. Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching (Germany)
6. Enrico Fermi Institute and KICP, University of Chicago, Chicago, IL (United States)
7. Aristotle University of Thessaloniki, Thessaloniki (Greece)
8. National Center for Scientific Research ''Demokritos'', Athens (Greece)

We present the results of a search for a high-energy axion emission signal from {sup 7}Li (0.478 MeV) and D(p, γ){sup 3}He (5.5 MeV) nuclear transitions using a low-background γ-ray calorimeter during Phase I of the CAST experiment. These so-called ''hadronic axions'' could provide a solution to the long-standing strong-CP problem and can be emitted from the solar core from nuclear M1 transitions. This is the first such search for high-energy pseudoscalar bosons with couplings to nucleons conducted using a helioscope approach. No excess signal above background was found.

• OSTI ID: 22272838
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2010, Issue 03; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTROPHYSICS
AXIONS
CP INVARIANCE
DEUTERIUM TARGET
GAMMA DETECTION
HELIUM 3
LITHIUM 7
M1-TRANSITIONS
MATHEMATICAL SOLUTIONS
MEV RANGE
NUCLEAR DECAY
PROTON REACTIONS
SHOWER COUNTERS