[1] Univ S Dakota, Dept Earth Sci & Phys, Vermillion, SD 57069 USA
[2] Pacific NW Natl Lab, Richland, WA 99352 USA
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[4] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA
[5] Oak Ridge Natl Lab, Oak Ridge, TN USA
[6] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA
[7] Triangle Univ Nucl Lab, Durham, NC 27706 USA
[8] S Dakota Sch Mines & Technol, Rapid City, SD USA
[9] Inst Theoret & Expt Phys, Moscow 117259, Russia
[10] Univ Chicago, Dept Phys, Chicago, IL 60637 USA
[11] Los Alamos Natl Lab, Los Alamos, NM USA
[12] Joint Inst Nucl Res, Dubna, Russia
[13] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
[14] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA
[15] Univ Washington, Dept Phys, Seattle, WA 98195 USA
[16] Duke Univ, Dept Phys, Durham, NC 27706 USA
[17] Osaka Univ, Nucl Phys Res Ctr, Osaka, Japan
[18] Osaka Univ, Dept Phys, Osaka, Japan
[19] Univ N Carolina, Dept Phys, Chapel Hill, NC USA
[20] Univ Alberta, Ctr Particle Phys, Edmonton, AB, Canada
[21] Black Hills State Univ, Dept Phys, Spearfish, SD 57799 USA
[22] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA