Naslov
CERN Axion Solar Telescope as a probe of large extra dimensions

Autori
Horvat, Raul ; Krčmar, Milica ; Lakić, Biljana

Izvornik
Physical review. D, Particles, fields, gravitation, and cosmology (1550-7998) 69 (2004), 12; 125011-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
axion solar telescope ; CAST experiment

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA