1. Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA
2. Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
3. Universidad Nacional de Ingenieria, Av. Tupac Amaru 210, Lima, Peru
4. Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Peru, Apartado 1761, Lima, Peru
5. Department of Physics and Astronomy, University of Rochester, Rochester NY 14627, USA
6. Departamento de Física, Universidad Técnica Federico Santa María, Avda. España 1680 Casilla 110-V Valparaíso, Chile
7. Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
8. Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud 150, Urca, Rio de Janeiro, RJ, 22290-180, Brazil
9. Department of Physics, College of William & Mary, Williamsburg, VA 23187, USA
10. Hampton University, Department of Physics, Hampton, VA 23668, USA
11. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA
12. NASA Glenn Research Center, Cleveland OH 44135, USA
13. Departamento de Física, Universidad de Guanajuato, Campus León, Lomas del Bosque 103, fracc. Lomas del Campestre León GTO. 37150, México
14. Northwestern University, Evanston, IL 60208, USA
15. Physics Department, Tufts University, Medford, MA 02155, USA
16. Department of Physics, University of Minnesota, Duluth, Duluth, MN 55812, USA
17. University of Florida, Department of Physics, Gainesville, FL 32611, USA
18. Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
19. Department of Physics, University of Texas, 1 University Station, Austin, TX 78712, USA
20. Massachusetts College of Liberal Arts, 375 Church St., North Adams, MA 01247, USA
21. Department of Physics and Astronomy, University of California, Irvine, Irvine, CA 92697-4575, USA
22. Otterbein College, One Otterbein College, Westerville, OH 43081, USA