1. Nuclear Physics Institute, Moscow State University, Vorob’evy gory, 119992 Moscow, Russia
2. Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
3. Christopher Newport University, Newport News, Virginia 23602, USA
4. Istituto Nazionale di Fisica Nucleare, Via Dodecanneso 33, I-16146 Genova, Italy
5. Physics Department, Moscow State University, Vorob’evy gory, 119992 Moscow, Russia