The galactic globular cluster M5 (NGC 5904) as a particle physics laboratory N. Viaux, M. Catelan, G.G. Raffelt, J. Redondo and A.A.R. Valcarce EPJ Web of Conferences, 43 (2013) 02004 Published online: 21 March 2013 DOI: 10.1051/epjconf/20134302004