Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-03-09
Phys.Rev. D68 (2003) 033016
Physics
High Energy Physics
High Energy Physics - Phenomenology
Introduction enlarged; conclusions added. To appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.68.033016
It is well known that gravity and neutrino oscillation can be used to probe large extra dimensions in a braneworld scenario. We argue that neutrino oscillation remains a useful probe even when the extra dimensions are small, because the brane-bulk coupling is likely to be large. Neutrino oscillation in the presence of a strong brane-bulk coupling is vastly different from the usual case of a weak coupling. In particular, some active neutrinos could be absorbed by the bulk when they oscillate from one kind to another, a signature which can be taken as the presence of an extra dimension. In a very large class of models which we shall discuss, the amount of absorption for all neutrino oscillations is controlled by a single parameter, a property which distinguishes extra dimensions from other mechanisms for losing neutrino fluxes.
Charuchittipan D.
Lam Chi-Sing
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