2003/03/28 by Gabriela Barenboim, Joseph Lykken
Physics and Astronomy · #Atomic and Subatomic Physics Research #Biology #Degeneracy (biology) #Genetics #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Supersymmetry #Theoretical physics #hep-ph #hep-th
paper · pdf · doi:10.1016/j.physletb.2003.12.076
published as Phys.Lett.B583:304-308,2004 · 4 pages, revtex
arxiv created 2003/03/28 · openalex publication_date 2004/01/29 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
It is commonly believed that unbroken supersymmetry (SUSY) implies that all members of a supermultiplet have the same mass. We demonstrate that this is not true, by exhibiting a simple counterexample. We employ the formalism of homeotic fermions, in a simple model where CPT conjugate fermions have different masses. This model can be supersymmetrized to a hypermultiplet of fields which form a representation of the conventional N=2 SUSY algebra. Nevertheless, CPT conjugate states in this hypermultiplet have different masses. These surprising results do not violate either the CPT theorem or the Haag–Lopuszański–Sohnius theorem.