1. Florida State University, Tallahassee, FL 32306, USA
2. Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
3. University of Minnesota, Minneapolis, MN 55455, USA
4. University of Wisconsin, Madison, WI 53706, USA
5. Massachusetts Institute of Technology, Cambridge, MA 02139, USA
6. Columbia University, New York, NY 10027, USA
7. SLAC National Accelerator Laboratory, Stanford, CA 94309, USA
8. Universidad Autónoma de San Luis Potosí, Mexico 78240, Mexico
9. Northwestern University, Chicago, IL 60208, USA
10. Amherst College, Amherst, MA 01002, USA
11. University of Cincinnati, Cincinnati, OH 45221, USA
12. University of Pittsburgh, Pittsburgh, PA 15260, USA
13. Saint Mary's University of Minnesota, Winona, MN 55987, USA
14. New Mexico State University, Las Cruces, NM 88003, USA
15. University of Michigan, Ann Arbor, MI 48201, USA
16. Wayne State University, Detroit, MI 48201, USA
17. University of South Carolina, Columbia, SC 29208, USA
18. University of Florida, Gainesville, FL 32611, USA
19. Carnegie-Mellon University, Pittsburgh, PA 15213, USA
20. Yale University, New Haven, CT 06520, USA
21. Argonne National Laboratory, Argonne, IL 60439, USA
22. University Paris 7, APC, Paris, France