One of the most general consequences of broad classes of superstring theories is that matter supermultiplets in the four-dimensional low-energy theory should transform as singlets and doublets with canonical electric charges under the electroweak SU(2)×U(1) group, or as singlets and fundamentals in extended groups. We discuss the generality of these and related results, and point out some indirect experimental scenarios which could exclude this class of models.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)