[1] Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France
[2] Univ Paris 11, LAL, IN2P3, CNRS, F-91898 Orsay, France
[3] MIT, LIGO, Cambridge, MA 02139 USA
[4] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy
[5] Univ Perugia, I-06123 Perugia, Italy
[6] Univ Wisconsin, Milwaukee, WI 53201 USA
[7] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy
[8] Univ Roma La Sapienza, I-00185 Rome, Italy
[9] CALTECH, LIGO, Pasadena, CA 91125 USA
[10] Carleton Coll, Northfield, MN 55057 USA
[11] Ist Nazl Fis Nucl, Sez Firenze Urbino, I-50019 Sesto Fiorentino, Italy
[12] Univ Urbino, I-61029 Urbino, Italy