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

Abstract

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.

Authors:
;  [1];  [2];  [1]
  1. HEP Division, Argonne National Laboratory, 9700 Cass Avenue, Argonne, Illinois 60439 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20713861
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.72.095003; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Morrissey, D.E., Wagner, C.E.M., Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, and Tait, T.M.P. Proton lifetime and baryon number violating signatures at the CERN LHC in gauge extended models. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.095003.
Morrissey, D.E., Wagner, C.E.M., Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, & Tait, T.M.P. Proton lifetime and baryon number violating signatures at the CERN LHC in gauge extended models. United States. doi:10.1103/PhysRevD.72.095003.
Morrissey, D.E., Wagner, C.E.M., Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, and Tait, T.M.P. Tue . "Proton lifetime and baryon number violating signatures at the CERN LHC in gauge extended models". United States. doi:10.1103/PhysRevD.72.095003.
@article{osti_20713861,
title = {Proton lifetime and baryon number violating signatures at the CERN LHC in gauge extended models},
author = {Morrissey, D.E. and Wagner, C.E.M. and Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 and Tait, T.M.P.},
abstractNote = {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.},
doi = {10.1103/PhysRevD.72.095003},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 72,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}