[1] Lanzhou Univ, Lanzhou 730000, Gansu, Peoples R China
[2] Duke Univ, Durham, NC 27708 USA
[3] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[4] Univ Kentucky, Lexington, KY 40506 USA
[5] MIT, Cambridge, MA 02139 USA
[6] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[7] Coll William & Mary, Williamsburg, VA 23187 USA
[8] Univ Illinois, Urbana, IL 61801 USA
[9] Calif State Univ Los Angeles, Los Angeles, CA 90032 USA
[10] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland
[11] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[12] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
[13] Old Dominion Univ, Norfolk, VA 23529 USA
[14] Univ Virginia, Charlottesville, VA 22904 USA
[15] Hampton Univ, Hampton, VA 23187 USA
[16] Ist Nazl Fis Nucl, Sez Roma, I-00161 Rome, Italy
[17] Ist Super Sanita, I-00161 Rome, Italy
[18] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
[19] Univ Bari, I-70126 Bari, Italy
[20] Mississippi State Univ, Mississippi State, MS 39762 USA
[21] Rutgers State Univ, Piscataway, NJ 08855 USA
[22] Kharkov Phys & Technol Inst, UA-61108 Kharkov, Ukraine
[23] Longwood Univ, Farmville, VA 23909 USA
[24] Cairo Univ, Giza 12613, Egypt
[25] Ist Nazl Fis Nucl, Sez Roma3, I-00146 Rome, Italy
[26] Kyungpook Natl Univ, Taegu 702701, South Korea
[27] China Inst Atom Energy, Beijing, Peoples R China
[28] Univ New Hampshire, Durham, NH 03824 USA
[29] Univ Sci & Technol China, Hefei 230026, Peoples R China
[30] Florida Int Univ, Miami, FL 33199 USA
[31] Univ Massachusetts, Amherst, MA 01003 USA
[32] Temple Univ, Philadelphia, PA 19122 USA
[33] Univ Blaise Pascal, IN2P3, F-63177 Aubiere, France
[34] Seoul Natl Univ, Seoul 151747, South Korea
[35] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy
[36] Univ Washington, Seattle, WA 98195 USA
[37] Syracuse Univ, Syracuse, NY 13244 USA
[38] Yerevan Phys Inst, Yerevan 375036, Armenia
[39] Univ Ljubljana, SI-1000 Ljubljana, Slovenia