Proton Lifetime and Baryon Number Violating Signatures at the 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)_L x U(1)_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)_1 x SU(2)_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.

36 pages

References in corpus (4)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Electroweak Baryogenesis and New TeV Fermions
• Search for nucleon decay via modes favored by supersymmetric grand unification models in Super-Kamiokande-I
• TASI-2002 Lectures: Non-perturbative Supersymmetry

Cited by in corpus (27)

• Non-abelian gauge extensions for B-decay anomalies
• Renormalization group evolution of dimension-six baryon number violating operators
• Physics searches at the LHC
• Monotops at the LHC
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• Search for monotop signatures in proton-proton collisions at sqrt(s) = 8 TeV
• Baryogenesis from an Earlier Phase Transition
• Monotop phenomenology at the Large Hadron Collider
• Electroweak Constraints on Effective Theories with U(2)xU(1) Flavor Symmetry
• The Family SU(2)_l x SU(2)_h x U(1) Model
• Baryon number violation at the LHC: the top option
• Leptonic Monotops at LHC
• Asymmetric Dark Matter and Baryogenesis from $SU(2{)}_{\ell }$
• A Heavy Higgs and a Light Sneutrino NLSP in the MSSM with Enhanced SU(2) D-terms
• Light Stops in a minimal U(1)x extension of the MSSM
• Effective Theories and Electroweak Precision Constraints
• Instanton-mediated baryon number violation in non-universal gauge extended models
• Proton annihilation at hadron colliders and Kamioka: high-energy versus high-luminosity
• Asymmetric Dark Matter from Gravitational Waves
• A Note on Proton Stability in the Standard Model
• A Possible Reason for $M_H\simeq 126$ GeV
• Supersymmetry - When Theory Inspires Experimental Searches
• Dark Matter and Baryogenesis from Non-Abelian Gauged Lepton Number
• Symmetries, Dark Matter and Minicharged Particles
• High-energy limit of collision-induced false vacuum decay
• Baryon and lepton number violating effective operators in a non-universal extension of the Standard Model
• Weak Scale Triggers in the SMEFT