Minimal anomalous U(1) theories and collider phenomenology

Ekstedt, Andreas (author): Uppsala universitet,Högenergifysik,Theoretical high energy physics

Enberg, Rikard (author): Uppsala universitet,Högenergifysik,Theoretical high energy physics

Ingelman, Gunnar (author): Uppsala universitet,Högenergifysik,Theoretical high energy physics

Löfgren, Johan (author): Uppsala universitet,Högenergifysik,Theoretical high energy physics

Mandal, Tanumoy, 1985- (author): Uppsala universitet,Högenergifysik,Department of Physics and AstrophysicsUniversity of DelhiDelhiIndia,Theoretical high energy physics

(creator_code:org_t)

2018
2018
English.
In: Journal of High Energy Physics (JHEP). - 1126-6708 .- 1029-8479. ; 1802, s. 152-

Related links:: https://doi.org/10.1...; show more...; https://link.springe...; https://uu.diva-port... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

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.

By the author/editor: Ekstedt, Andreas; Enberg, Rikard; Ingelman, Gunnar; Löfgren, Johan; Mandal, Tanumoy, ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Subatomic Physic ...

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