# Laboratoire Collisions Agrégats Réactivité - UMR5589

Université Paul Sabatier - Bat. 3R4 - 118 route de Narbonne 31062 Toulouse Cedex 09, France

## Search for photon oscillations into massive particles

Recently, axionlike particle search has received renewed interest, and several groups have started experiments. In this paper, we present the final results of our experiment on photon-axion oscillations in the presence of a magnetic field, which took place at the Laboratoire pour l’Utilisation des Lasers Intenses, Palaiseau, France. Our null measurement allowed us to exclude the existence of axions with inverse coupling constant M>9.×105 GeV for low axion masses and to improve the preceding Brookhaven-Fermilab-Rochester-Trieste (BFRT) Collaboration limits by a factor of 3 or more for axion masses 1.1<ma<2.6 meV. We also show that our experimental results improve the existing limits on the parameters of a low mass hidden-sector boson usually dubbed “paraphoton” because of its similarity with the usual photon. We detail our apparatus which is based on the “light shining through the wall” technique. We compare our results to other existing ones.

doi:10.1103/PhysRevD.78.032013

Voir en ligne : Phys. Rev. D 78, 032013 (2008)