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First Constraints on Heavy QCD Axions with a Liquid Argon Time Projection Chamber using the ArgoNeuT Experiment

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arxiv 2207.08448 v3 pith:BGZ7K4IC submitted 2022-07-18 hep-ex hep-ph

ArgoNeuT Collaboration: R. Acciarri , C. Adams , B. Baller , V. Basque , F. Cavanna , R. T. Co , R. S. Fitzpatrick , B. Fleming
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P. Green R. Harnik K. J. Kelly S. Kumar K. Lang I. Lepetic Z. Liu X. Luo K. F. Lyu O. Palamara G. Scanavini M. Soderberg J. Spitz A. M. Szelc W. Wu T. Yang
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classification hep-exhep-ph
keywords heavyaxionaxionsargoneutconstraintsdecaydimuonexperiment
verification ladder T0 review T1 audit T2 compute T3 formal
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We present the results of a search for heavy QCD axions performed by the ArgoNeuT experiment at Fermilab. We search for heavy axions produced in the NuMI neutrino beam target and absorber decaying into dimuon pairs, which can be identified using the unique capabilities of ArgoNeuT and the MINOS near detector. This decay channel is motivated by a broad class of heavy QCD axion models that address the strong CP and axion quality problems with axion masses above the dimuon threshold. We obtain new constraints at a 95\% confidence level for heavy axions in the previously unexplored mass range between 0.2-0.9 GeV, for axion decay constants around tens of TeV.

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Cited by 4 Pith papers

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  4. Probing Long-Lived Particle Production in Muon Decays at the SNS with a Highly Capable Hydrocarbon Detector

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