Spontaneous breaking of global B-L symmetry and matter-antimatter oscillations in grand unified theories

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.27.254· OSTI ID:6425022

Mohapatra, R N; Senjanovic, G

We explore the consequences of the hypothesis that B-L symmetry, which is exact in the standard model based on the SU(2)/sub L/ x U(1) x SU(3)/sub c/ gauge group and its extension to the minimal SU(5) theory, is a spontaneously broken global symmetry. This results in possibly observable rates for ..delta..(B-L) = 0, ..delta..B = 2 hydrogen-antihydrogen transitions and double proton decay pp..-->..e/sup +/e/sup +/ (..mu../sup +/..mu../sup +/) and ..delta..(B-l)not =0, ..delta..B = 2 neutron-antineutron mixing and p+n..--> pi..'s; furthermore, a relation between the transition times tau/sub HhyphenH/, tau/sub n/-n-bar, Majorana neutrino mass, and the mass of a doubly charged Higgs particle ..delta../sup + +/ emerges. At the level of SU(2)/sub L/ x U(1) x SU(3)/sub c/, for tau/sub n/-n-barapprox. =10/sup 7/ sec and m++approx. =20 GeV, we predict tau/sub HhyphenH/approx. =10/sup 3/ yr and tau/sub p/papprox. =10/sup 31/ yr, both of which are experimentally testable numbers. The embedding of our model in SU(5) is discussed in detail, with the analysis of tau/sub p/ and sin/sup 2/theta/sub W/ besides matter oscillations.

• Research Organization: Physics Department, The City College of the City University of New York, New York, New York 10031
• OSTI ID: 6425022
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 27:1; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645301 -- High Energy Physics-- Particle Invariance Principles & Symmetries-- General-- (-1987)
645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIMATTER
LIE GROUPS
MATHEMATICAL MODELS
MATTER
OSCILLATIONS
PARTICLE MODELS
SU GROUPS
SU-2 GROUPS
SU-3 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS