We discuss the possibility of a laboratory search for light minicharged particles carrying electric charge, which is a small fraction ∈ of that of electron. We point out that the production of pairs of such particles in an electric field would result in a measurable discharge in vacuum of electrically charged objects. A realistic experiment may be sensitive to such particles at least down to ∈~10-8, if their mass is below ~10-4 eV.
Bibliographical noteFunding Information:
This work is supported, in part, by the DOE grant DE-FG02-94ER40823.
- Fractional charge
- light particles