[1] University of Chicago, University of Illinois at Chicago, Chicago, IL, United States
[2] Commissariat A l'Energie Atomique et Aux 'Energies Alternatives, Bruyères-Le-Châtel, Arpajon, France
[3] Lawrence Livermore National Laboratory, Livermore, CA, United States
[4] Abdus Salam International Centre for Theoretical Physics, Trieste, Italy