Naslov
Recent searches for solar axions and large extra dimensions

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

Izvornik
Physical Review D (0556-2821) 65 (2002);

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

Ključne riječi
large extra dimensions; solar axions

Sažetak
We analyze the data from two recent experiments designed to search for solar within the context of multidimensional theories of the Kaluza-Klein type. In these experiments, axions were supposed to be emitted from the solar core in M1 transitions between the first excited state and the ground state if 57-Fe and 7-Li. Because of the high multiplicity of axionic Kaluza-Klein states which couple with the strength of ordinary QCD axions, we obtain much more stringent experimental limits on the four dimensional Peccei-Quinn breaking scale f_pQ+ compared with the solar QCD axion limit. Specifically, for the 57-Fe experiment, f_PQ>1 x 10^6 GeV in theories with two extra dimensions and a higher-dimensional gravitational scale M_H of order 1 TeV (to be compared with the QCD axion limit, f_PQ > 8x10^3 GeV). For the 7-Li experiment, f_PQ>1.4x10^5 GeV and 3.4x10^5 GeV, respectively (to be compared with the QCD axion limit, f_PQ>1.9x10^2 GeV). It is an interesting feature of our results, that in most cases, the obtained limit on f_PQ cannot be coupled with the mass of the axion, which is essentially set by the (common) radius of the extra dimensions.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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