Anomalous neutral gauge boson interactions and simplified models

Corbett, T., Dolan, M. J., Englert, C. and Nordstrom, K. (2018) Anomalous neutral gauge boson interactions and simplified models. Physical Review D, 97, 115040. (doi: 10.1103/PhysRevD.97.115040)

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Trilinear Z boson interactions are sensitive probes both of new sources of C P violation in physics beyond the standard model and of new particle thresholds. Measurements of trilinear Z interactions are typically interpreted in the frameworks of anomalous couplings and effective field theory, both of which require care in interpretation. To obtain a quantitative picture of the power of these measurements when interpreted in a TeV-scale context, we investigate the anatomy of Z Z Z interactions and consider two minimal and perturbative simplified models which induce such interactions through new scalar and fermion loops at the weak scale, focusing on Z Z and vector boson fusion-induced Z j j production at the LHC and Z Z production at a future e + e − collider. We show that both threshold and non-threshold effects often are small compared to the sensitivity of the LHC, while the increased sensitivity of a future lepton collider should allow us to constrain such scenarios through associated electroweak precision effects complementary to direct searches at hadron colliders.

Item Type:Articles
Additional Information:T.C. and M.J.D are supported by the Australian Research Council. K.N. has been supported by the College of Science and Engineering of the University of Glasgow through a PhD Scholarship and by the NWO.
Glasgow Author(s) Enlighten ID:Englert, Professor Christoph and NORDSTROM, Karl
Authors: Corbett, T., Dolan, M. J., Englert, C., and Nordstrom, K.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN (Online):1550-2368
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Physical Review D 97:115040
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
729781Phenomenology from Lattice QCD and Collider PhysicsChristine DaviesScience & Technology Facilities Council (STFC)ST/P000746/1S&E P&A - PHYSICS & ASTRONOMY