1998/04/17 by A. Prinz, A. A. Prinz, R. Baggs +20 · 1 citation
Medicine · Physics and Astronomy · #Particle Detector Development and Performance #Radiation Detection and Scintillator Technologies #Radiation Therapy and Dosimetry #hep-ex
paper · pdf · doi:10.1103/physrevlett.81.1175
published as Phys.Rev.Lett.81:1175-1178,1998 · 4 pages, REVTeX, multicol, 3 figures. Minor typo corrected. Submitted to Physical Review Letters
arxiv created 1998/04/17 · openalex publication_date 1998/08/10 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Particles with electric charge q\ensuremath≤10^\ensuremath-3e and masses in the range 1--100MeV/c2 are not excluded by present experiments. An experiment uniquely suited to the production and detection of such ``millicharged'' particles has been carried out at SLAC. This experiment is sensitive to the infrequent excitation and ionization of matter expected from the passage of such a particle. Analysis of the data rules out a region of mass and charge, establishing, for example, a 95%-confidence upper limit on electric charge of 4.1\ifmmode×\else\texttimes\fi10^\ensuremath-5e for millicharged particles of mass 1MeV/c2 and 5.8\ifmmode×\else\texttimes\fi10^\ensuremath-4e for mass 100MeV/c2.