The Search for Fractional Charge Elementary Particles and Very Massive Particles in Bulk Matter

TL;DR

This paper discusses ongoing and future efforts to detect fractional charge and very massive elementary particles in ancient bulk matter like meteorites and lunar samples, using advanced modifications of the Millikan technique.

Contribution

It introduces new experimental methods combining modern technology to search for extremely massive particles in primeval matter, including potential asteroid-based investigations.

Findings

Development of modified Millikan liquid drop techniques

Potential to detect particles with masses >10^13 GeV

Proposal for asteroid-based particle searches

Abstract

We describe our ongoing work on, and future plans for, searches in bulk matter for fractional charge elementary particles and very massive elementary particles. Our primary interest is in searching for such particles that may have been produced in the early universe and may be found in the more primeval matter available in the solar system: meteorites, material from the moon's surface, and certain types of ancient terrestrial rocks. In the future we are interested in examining material brought back by sample return probes from asteroids. We will describe our experimental methods that are based on new modifications of the Millikan liquid drop technique and modern technology: micromachining, CCD cameras, and desktop computers. Extensions of our experimental methods and technology allow searches for very massive charged particles in primeval matter; particles with masses greater than 10**13 GeV. In the first such searches carried out on earth there will be uncertainties in the mass search range. Therefore we will also discuss the advantages of eventually carrying out such searches directly on an asteroid.