\documentclass[aps,rmp,twocolumn,superscriptaddress,floatfix]{revtex4}
\begin{document}
\author{	J.	\"Ayst\"o 	} 
\affiliation{Department of Physics, University of Jyv\"askyl\"a, Finland}
\author{	A.	Badertscher 	} 
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{	L. 	Bezrukov 	} 
\affiliation{Institute for Nuclear Research, Russian Academy of Sciences, Moscow, 117312 Russia}
\author{	J.	Bouchez 	} 
\affiliation{DAPNIA/SPP CEA-Saclay 91191 Gif-sur-Yvette cedex and APC, Paris }
\author{	A.	Bueno	} 
\affiliation{Dpto Fisica Teorica y del Cosmos \& C.A.F.P.E., Universidad de Granada, Spain}
\author{	J.	Busto 	}
\affiliation{Centre de Physique des Particules de Marseille (CPPM), IN2P3-CBRS et Université d'Aix-Marseille II, 163 Av. de Luminy, B.P. 902, 13288 Marseille Cedex 09, France}
\author{	J.-E. 	Campagne	} 
\affiliation{Laboratoire de l'Accélérateur Linéaire (LAL), IN2P3-CNRS et Université PARIS-SUD 11, Centre Scientifique d'Orsay, B.P. 34, 91898 ORSAY Cedex, France}
\author{	Ch.	Cavata	}
\affiliation{CEA - Saclay, 91191 Gif sur Yvette Cedex, France}
%\author{	S.	Davidson 	} 
%\affiliation{CNRS/Université  Lyon 1,
%Institut de Physique Nucléaire de Lyon, 4 rue Enrico Fermi,
%Villeurbanne,  69622 cedex France}
\author{	A.	de Bellefon 	}
\affiliation{Astroparticule et Cosmologie (APC), UMR 7164 (CNRS, Universiti Paris VII, CEA, Observatoire de Paris), 11 pl. Marcelin Berthelot, 75231 Paris Cedex 05, France}
\author{	J.	Dumarchez	} 
\affiliation{Laboratoire de Physique Nucléaire et des Hautes Energies (LPNHE), IN2P3-CNRS et Universités Paris VI et Paris VII, 4 place Jussieu, Tr. 33 - RdC, 75252 Paris Cedex 05, France}
\author{	J. 	Ebert }
\affiliation{Universität Hamburg, Institut für Experimentalphysik, Geb. 67/216, Luruper Chaussee 149, 22761 Hamburg, Germany}
\author{	T. 	Enqvist 	} 
\affiliation{CUPP, University of Oulu, Finland}
\author{	A.	Ereditato 	} 
\affiliation{Laboratory for High Energy Physics, University of Bern, Sidlerstrasse, 5, CH-3012 Bern, Switzerland}
\author{	F. von	Feilizsch 	} 
\affiliation{Technical University Munich, Physikdepartment E15, James-Franck-Str 1, 85748 Garching, Germany}
\author{	M. 	G\"oger-Neff 	}
\affiliation{Technical University Munich, Physikdepartment E15, James-Franck-Str 1, 85748 Garching, Germany}
\author{	S.	Gninenko 	} \affiliation{Unknown}
\author{	W.	Gruber 	} 
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{	C.	Hagner	} 
\affiliation{Universität Hamburg, Institut für Experimentalphysik, Geb. 67/216, Luruper Chaussee 149, 22761 Hamburg, Germany}
\author{	K.	Hochmuth 	}
\affiliation{Max-Planck-Institut f\"ur Physik (Werner-Heisenberg-Institut), F\"ohringer Ring 6, 80805 M\"unchen, Germany}
\author{	J.	Holeczek	} 
\affiliation{Institute of Physics, University of Silesia, Uniwersytecka 4, PL-40007 Katowice, Poland}
\author{	J.	Kisiel	}
\affiliation{Institute of Physics, University of Silesia, Uniwersytecka 4, PL-40007 Katowice, Poland}
\author{	L.	Knecht	}
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{	I.  Kreslo	} 
\affiliation{Laboratory for High Energy Physics, University of Bern, Sidlerstrasse, 5, CH-3012 Bern, Switzerland}
\author{V. A. Kudryavtsev}
\affiliation{Particle Physics and Particle Astrophysics, Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, UK}
\author{P. Kuusiniemi}
\affiliation{CUPP, University of Oulu, Finland}
\author{	T.	Lachenmaier 	} \affiliation{Unknown}
\author{	M.	Laffranchi 	}
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{ B. Lefievre } 
\affiliation{Astroparticule et Cosmologie (APC), UMR 7164 (CNRS, Universiti Paris VII, CEA, Observatoire de Paris), 11 pl. Marcelin Berthelot, 75231 Paris Cedex 05, France}
\author{	M.	Lindner 	} 
\affiliation{	Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany}
\author{ J. Maalampi } 
\affiliation{ University of Jyväskylä, Finland }
\author{A. Marchionni}
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{	T. 	Marrodán Undagoitia	} 
\affiliation{Technical University Munich, Physikdepartment E15, James-Franck-Str 1, 85748 Garching, Germany}
\author{	A.	Meregaglia 	}
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{	M.	Messina 	} 
\affiliation{Laboratory for High Energy Physics, University of Bern, Sidlerstrasse, 5, CH-3012 Bern, Switzerland}
\author{	M.	Mezzetto 	} 
\affiliation{INFN-Univ. di Padova, Dept. di Fisica, via Marzolo 8, 35100 Padua, Italy}
\author{	L.	Mosca	} \affiliation{Unknown}
\author{ U. Moser}
\affiliation{Laboratory for High Energy Physics, University of Bern, Sidlerstrasse, 5, CH-3012 Bern, Switzerland}
\author{	A.	Müller 	}
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{	G.	Natterer 	}
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{	L.	Oberauer	} 
\affiliation{Technical University Munich, Physikdepartment E15, James-Franck-Str 1, 85748 Garching, Germany}
\author{	P.	Otiougova 	}
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{	T.	Patzak	} 
\affiliation{Astroparticule et Cosmologie (APC), UMR 7164 (CNRS, Universiti Paris VII, CEA, Observatoire de Paris), 11 pl. Marcelin Berthelot, 75231 Paris Cedex 05, France}
\author{	J.	Peltoniemi 	} 
\affiliation{	CUPP, University of Oulu, Finland}
\author{	W.	Potzel	} 
\affiliation{Technical University Munich, Physikdepartment E15, James-Franck-Str 1, 85748 Garching, Germany}
\author{ C. Pistillo} 
\affiliation{Laboratory for High Energy Physics, University of Bern, Sidlerstrasse, 5, CH-3012 Bern, Switzerland}
\author{	G. G.	Raffelt 	} 
\affiliation{Max-Planck-Institut f\"ur Physik (Werner-Heisenberg-Institut), F\"ohringer Ring 6, 80805 M\"unchen, Germany}
\author{M. Roos}
\affiliation{Department of Physical Sciences, University of Helsinki, Finland}
\author{ B. Rossi} 
\affiliation{Laboratory for High Energy Physics, University of Bern, Sidlerstrasse, 5, CH-3012 Bern, Switzerland}
\author{	A.	Rubbia 	}
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{ N. Savvinov} 
\affiliation{Laboratory for High Energy Physics, University of Bern, Sidlerstrasse, 5, CH-3012 Bern, Switzerland}
\author{	N.	Spooner 	} 
\affiliation{Particle Physics and Particle Astrophysics, Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, UK}
\author{	A.	Tonazzo 	} 
\affiliation{Astroparticule et Cosmologie (APC), UMR 7164 (CNRS, Universiti Paris VII, CEA, Observatoire de Paris), 11 pl. Marcelin Berthelot, 75231 Paris Cedex 05, France}
\author{W. Trzaska}
\affiliation{Department of Physics, University of Jyv\"askyl\"a, Finland}
\author{	J.	Ulbricht 	}
\affiliation{Institut f\"{u}r Teilchenphysik,  ETHZ, CH-8093 Z\"{u}rich, Switzerland}
\author{	C.	Volpe	} 
\affiliation{Institut de Physique Nucleaire d'Orsay (IPNO), Groupe de Physique Theorique, Universite de Paris-Sud XI, Bat 100, rue Georges Clemenceau, 91406 Orsay, Cedex, France}
\author{ J. Winter } 
\affiliation{Technical University Munich, Physikdepartment E15, James-Franck-Str 1, 85748 Garching, Germany}
\author{	M.	Wurm 	} 
\affiliation{Technical University Munich, Physikdepartment E15, James-Franck-Str 1, 85748 Garching, Germany}
\author{	A.	Zalewska	} \affiliation{Unknown}
\author{	R.	Zimmermann	} 
\affiliation{Universität Hamburg, Institut für Experimentalphysik, Geb. 67/216, Luruper Chaussee 149, 22761 Hamburg, Germany}
\date{\today}
\maketitle
\end{document}