Higgs Portal From The Atmosphere To Hyper-K

Abstract

A light Higgs portal scalar could be abundantly produced in the earth's atmosphere and decay in large-volume neutrino detectors. We point out that the Hyper-Kamiokande detector bears a strong discovery potential of probing such particles in an uncharted parameter space that is actively explored by intensity frontier experiments including rare kaon decays. The signal we propose to look for is electron-positron pair creation that manifests as a double-ring appearing from the same vertex. Most of these pairs originate from zenith angles above the Hyper-K detector's horizon. This search can be generalized to other new light states and is highly complementary to beam experiments.

5 pages, 4 figures

References in corpus (13)

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• Study of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c
• Higgs-field Portal into Hidden Sectors
• Muonic hydrogen and MeV forces
• Light Scalars and the KOTO Anomaly
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• Constraints on long-lived light scalars with flavor-changing couplings and the KOTO anomaly
• LSND Constraints on the Higgs Portal
• An investigation of the very rare $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ decay
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• Searches for Atmospheric Long-Lived Particles
• Search for a feebly interacting particle $X$ in the decay $K^{+}\to {\pi }^{+}X$

Cited by in corpus (5)

• Dark Scalars and Heavy Neutral Leptons at DarkQuest
• Images from disk and spherical accretions of hairy Schwarzschild black holes
• Images of hairy Reissner-Nordström black hole illuminated by static accretions
• The MicroBooNE Experiment, the NuMI Absorber, and Heavy Neutral Leptons
• Looking forward to test the KOTO anomaly with FASER