[1] Univ Tubingen, Inst Theoret Phys, Kepler Ctr Astro & Particle Phys, Morgenstelle 14, D-72076 Tubingen, Germany
[2] Univ Tecn Federico Santa Maria, Dept Fis, Casilla 110-V, Valparaiso, Chile
[3] Univ Tecn Federico Santa Maria, Ctr Cientif Tecnol Valparaiso CCTVal, Casilla 110-V, Valparaiso, Chile
[4] High Energy Frontier SAPHIR ANID, Millennium Inst Subat Phys, Fernandez Concha 700, Santiago, Chile