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CERN Axion Solar Telescope as a probe of large extra dimensions (CROSBI ID 106602)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Horvat, Raul ; Krčmar, Milica ; Lakić, Biljana CERN Axion Solar Telescope as a probe of large extra dimensions // Physical review. D, Particles, fields, gravitation, and cosmology, 69 (2004), 12; 125011-1-125011-5. doi: 10.1103/PhysRevD.69.125011

Podaci o odgovornosti

Horvat, Raul ; Krčmar, Milica ; Lakić, Biljana

engleski

CERN Axion Solar Telescope as a probe of large extra dimensions

We explore the potential of the CERN Axion Solar Telescope (CAST) for testing the presence of large extra dimensions. The CAST experiment has originally been proposed to search for solar axions with a sensitivity supposed to provide a limit on the axion-photon coupling g_agammagamma<~5×10– 11 GeV-1 or even lower. The expected bound on the coupling constant is by a factor of ten more stringent than the current experimental results. This bound extends for the first time beyond the limit dictated by astrophysical considerations. As a tuning experiment planning to explore the axion mass region up to about 1 eV, CAST would also be sensitive to the existence of Kaluza-Klein massive states. Therefore, the detection of x rays at least at two pressures may be the signature of large extra dimensions. From this requirement we find that CAST may test (two) large extra dimensions with a (common) compactification radius R down to around 250 nm if m_PQ<1/(2R), and down to around 370 nm if 1/(2R)<mPQ, where m_PQ is the Peccei-Quinn mass.

axion solar telescope ; CAST experiment

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Podaci o izdanju

69 (12)

2004.

125011-1-125011-5

objavljeno

1550-7998

10.1103/PhysRevD.69.125011

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