paper

Fractional-charge hadrons and leptons to tell the Standard Model group apart

arXiv:2404.03438

Abstract

The gauge group of strong and electroweak interactions in Nature could be any of the four that share the same Lie algebra, $S U (3)_{c} \times S U (2)_{L} \times U (1)_{Y} / Z_{p} \equiv G_{p}$ with $Z_{p} = {Z_{6}, Z_{3}, Z_{2}, Z_{1}}$ . Each of these cases allows in its spectrum for the matter fields of the SM but also for new distinctive representations, e.g. under the assumption that $q_{L}$ possesses the minimum possible hypercharge in Nature, $G_{p}$ allows for particles with a multiple of $p e /6$ for electric charge. This letter discusses how these new possibilities in the spectrum could be used to tell the SM group apart.

12 pages, 8 figures, 5 tables