1996/07/31 by Jonathan L. Rosner · 6 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Electron #Electron–positron annihilation #Gauge group #Gauge theory #Hadron #Lepton #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quark #hep-ph
paper · pdf · doi:10.1103/physrevd.55.3143
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 55(5), 3143-3149 (American Physical Society) · 14 pages, latex, no figures. Revised version submitted to PRD
arxiv created 1996/08/22 · openalex publication_date 1997/03/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The lowest-dimensional representation of the group E6 contains both the standard quarks and leptons and a set of exotic quarks and leptons whose decays can involve a series of chains ending in radiative decay of one light neutrino species into another. An example is given based on the decomposition E6\ensuremath→ SU(2)I\ifmmode×\else\texttimes\fiSU(6), where SU(2)I is an ``inert'' subgroup whose gauge bosons WI^(\ifmmode±\else\textpm\fi) and ZI are all electromagnetically neutral, while SU(6) contains the conventional SU(5) grand-unified group. The possibility is explored that such a chain is responsible for an event observed by the Collider Detector at Fermilab involving the production in proton-antiproton collisions at Ec.m.=1.8 TeV of an electron-positron pair, two photons, and missing energy (e+e^\ensuremath-\ensuremathγ\ensuremathγET).