TY - JOUR
T1 - Dimension-five operators in grand unified theories
AU - Sayre, Joshua
AU - Wiesenfeldt, Sören
AU - Willenbrock, Scott
PY - 2007/2/13
Y1 - 2007/2/13
N2 - Extensions of the standard model with low-energy supersymmetry generically allow baryon- and lepton-number violating operators of dimension four and five, yielding rapid proton decay. The dimension-four operators are usually forbidden by matter parity. We investigate to what extent the appearance of dimension-five operators at the Planck scale may be constrained by the different grand-unified gauge groups. Dimension-five operators are suppressed in models based on E6 and SU(3)C×SU(3)L×SU(3)R, where four matter fields do not form a gauge singlet. An intermediate scale offers the possibility to sufficiently suppress these dimension-five operators.
AB - Extensions of the standard model with low-energy supersymmetry generically allow baryon- and lepton-number violating operators of dimension four and five, yielding rapid proton decay. The dimension-four operators are usually forbidden by matter parity. We investigate to what extent the appearance of dimension-five operators at the Planck scale may be constrained by the different grand-unified gauge groups. Dimension-five operators are suppressed in models based on E6 and SU(3)C×SU(3)L×SU(3)R, where four matter fields do not form a gauge singlet. An intermediate scale offers the possibility to sufficiently suppress these dimension-five operators.
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U2 - 10.1103/PhysRevD.75.037702
DO - 10.1103/PhysRevD.75.037702
M3 - Article
AN - SCOPUS:33847017285
SN - 1550-7998
VL - 75
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 3
M1 - 037702
ER -