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arXiv · 2011.05995

Heavy Axion Opportunities at the DUNE Near Detector

Kevin J. Kelly·Soubhik Kumar·Zhen Liu
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Abstract

While the QCD axion is often considered to be necessarily light ($\lesssim$ eV), recent work has opened a viable and interesting parameter space for heavy axions, which solve both the Strong CP and the axion Quality Problems. These well-motivated heavy axions, as well as the generic axion-like-particles, call for explorations in the GeV mass realm at collider and beam dump environments. The primary upcoming neutrino experiment, Deep Underground Neutrino Experiment (DUNE), is simultaneously also a powerful beam dump experiment, enabled by its multipurpose Near Detector (ND) complex. In this study, we show with detailed analyses that the DUNE ND has a unique sensitivity to heavy axions for masses between $20$ MeV and $2$ GeV, complementary to other future experiments.

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Kevin J. Kelly, Soubhik Kumar, Zhen Liu. 2020-11-11. Heavy Axion Opportunities at the DUNE Near Detector. https://doi.org/10.1103/physrevd.103.095002

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