Proton lifetime and baryon number violating signatures at the CERN LHC in gauge extended models

Journal Article · Tue Nov 01 00:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.095003· OSTI ID:20713861

Morrissey, D E; Wagner, C E.M. ^[1]; Tait, T M.P. ^[1]

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1. HEP Division, Argonne National Laboratory, 9700 Cass Avenue, Argonne, Illinois 60439 (United States)

There exist a number of models in the literature in which the weak interactions are derived from a chiral gauge theory based on a larger group than SU(2){sub L}xU(1){sub Y}. Such theories can be constructed so as to be anomaly free and consistent with precision electroweak measurements, and may be interpreted as a deconstruction of an extra dimension. They also provide interesting insights into the issues of flavor and dynamical electroweak symmetry breaking, and can help to raise the mass of the Higgs boson in supersymmetric theories. In this work we show that these theories can also give rise to baryon and lepton number violating processes, such as nucleon decay and spectacular multijet events at colliders, via the instanton transitions associated with the extended gauge group. For a particular model based on SU(2){sub 1}xSU(2){sub 2}, we find that the B+L violating scattering cross sections are too small to be observed at the LHC, but that the lower limit on the lifetime of the proton implies an upper bound on the gauge couplings.

• OSTI ID: 20713861
• Journal Information: Physical Review. D, Particles Fields, Vol. 72, Issue 9; Other Information: DOI: 10.1103/PhysRevD.72.095003; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON NUMBER
CERN LHC
CHIRAL SYMMETRY
CHIRALITY
CONSERVATION LAWS
COUPLING CONSTANTS
FLAVOR MODEL
GAUGE INVARIANCE
HIGGS BOSONS
INCLUSIVE INTERACTIONS
JET MODEL
LEPTON NUMBER
LIFETIME
PARTICLE DECAY
PROTON-PROTON INTERACTIONS
PROTONS
REST MASS
SCATTERING
SU-2 GROUPS
SUPERSYMMETRY
SYMMETRY BREAKING
UNIFIED GAUGE MODELS
WEAK INTERACTIONS