J. Bang⁸, A. C. Vaitkus⁸, C. Ding⁸, W. H. Lippincott², M. Szydagis⁵, C. Levy⁵, R. J. Gaitskell⁸, and R. Essig⁷

• ¹Lawrence Livermore National Laboratory, Livermore, California 94551, USA
• ²Department of Physics, University of California, Santa Barbara, Santa Barbara, California 93106-9530, USA
• ³SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
• ⁴Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208-3112, USA
• ⁵Department of Physics, University at Albany (SUNY), Albany, New York 12222-0100, USA
• ⁶Physics Department, Stanford University, Stanford, California 94305, USA
• ⁷C. N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, New York 11794, USA
• ⁸Department of Physics, Brown University, Providence, Rhode Island 02912-9037, USA

• ^*Contact author: xu12@llnl.gov