Phenomenology of Strongly Coupled Chiral Gauge Theories

Abstract

A sector with QCD-like strong dynamics is common in models of non-standard physics. Such a model could be accessible in LHC searches if both confinement and big-quarks charged under the confining group are at the TeV scale. Big-quark masses at this scale can be explained if the new fermions are chiral under a new $U(1{)}^{\prime }$ gauge symmetry such that their bare masses are related to the $U(1{)}^{\prime }$-breaking and new confinement scales. Here we present a study of a minimal GUT-motivated and gauge anomaly-free model with implications for the LHC Run 2 searches. We find that the first signatures of such models could appear as two gauge boson resonances. The chiral nature of the model could be confirmed by observation of a $Z^{\prime }\gamma$ resonance, where the $Z^{\prime }$ naturally has a large leptonic branching ratio because of its kinetic mixing with the hypercharge gauge boson.

Version accepted for publication in JHEP

References in corpus (7)

• Parton distributions for the LHC
• Precision Constraints on Extra Fermion Generations
• Heavy octets and Tevatron signals with three or four b jets
• Search for decays of stopped long-lived particles produced in proton-proton collisions at sqrt(s) = 8 TeV
• Toward a coherent solution of diphoton and flavor anomalies
• On the particle spectrum and the conformal window
• A Composite Model for the 750 GeV Diphoton Excess

Cited by in corpus (4)

• Homeopathic Dark Matter, or how diluted heavy substances produce high energy cosmic rays
• Composite Dark Matter from Strongly-Interacting Chiral Dynamics
• Strong Constraints on Dark Photon and Scalar Dark Matter Decay from INTEGRAL and AMS-02 data
• Fundamental scalar field with zero dimension from anomaly cancelations