Year: 1998
Type: article
Abstract: Particles with electric charge $q\ensuremath{\le}{10}^{\ensuremath{-}3}e$ and masses in the range $1--100\mathrm{MeV}{/c}^{2}$ 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 $4.1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}e$ for millicharged particles of mass $1\mathrm{MeV}{/c}^{2}$ and $5.8\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}e$ for mass $100\mathrm{MeV}{/c}^{2}$.
Source: Physical Review Letters
Authors: A. A. Prinz, R. Baggs, J. Ballam, S. Ecklund, C. Fertig, J. A. Jaros, K. Kase, A. Kulikov, W. G. J. Langeveld, R. Leonard, T. Marvin, T. Nakashima, W. R. Nelson, A. Odian, M. Pertsova, G. Putallaz, A. Weinstein
Institution: SLAC National Accelerator Laboratory
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2099428583