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Minimal anomalous U(1) theories and collider phenomenology
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics. (Theoretical high energy physics)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics. (Theoretical high energy physics)ORCID iD: 0000-0003-0452-0671
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics. (Theoretical high energy physics)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics. (Theoretical high energy physics)
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2018 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, Vol. 1802, p. 152-Article in journal (Refereed) Published
Abstract [en]

We study the collider phenomenology of a neutral gauge boson Z′ arising in minimal but anomalous U(1) extensions of the Standard Model (SM). To retain gauge invariance of physical observables, we consider cancellation of gauge anomalies through the Green-Schwarz mechanism. We categorize a wide class of U(1) extensions in terms of the new U(1) charges of the left-handed quarks and leptons and the Higgs doublet. We derive constraints on some benchmark models using electroweak precision constraints and the latest 13 TeV LHC dilepton and dijet resonance search data. We calculate the decay rates of the exotic and rare one-loop Z′ decays to ZZ and Z-photon modes, which are the unique signatures of our framework. If observed, these decays could hint at anomaly cancellation through the Green-Schwarz mechanism. We also discuss the possible observation of such signatures at the LHC and at future ILC colliders.

Place, publisher, year, edition, pages
2018. Vol. 1802, p. 152-
National Category
Subatomic Physics
Research subject
Physics with specialization in Elementary Particle Physics
Identifiers
URN: urn:nbn:se:uu:diva-336639DOI: 10.1007/JHEP02(2018)152ISI: 000426358100007OAI: oai:DiVA.org:uu-336639DiVA, id: diva2:1166582
Funder
Carl Tryggers foundation , CTS-14:206Swedish Research Council, 621-2011-5107
Available from: 2017-12-15 Created: 2017-12-15 Last updated: 2018-04-26Bibliographically approved

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