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arxiv 1801.03848 v2 pith:T7PFPOL2 submitted 2018-01-11 hep-ex hep-phnucl-ex

First Measurement of Monoenergetic Muon Neutrino Charged Current Interactions

A. A. Aguilar-Arevalo , B. C. Brown , L. Bugel , G. Cheng , E. D. Church , J. M. Conrad , R. L. Cooper , R. Dharmapalan
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Z. Djurcic D. A. Finley R. S. Fitzpatrick R. Ford F. G. Garcia G. T. Garvey J. Grange W. Huelsnitz C. Ignarra R. Imlay R. A. Johnson J. R. Jordan G. Karagiorgi T. Katori T. Kobilarcik W. C. Louis K. Mahn C. Mariani W. Marsh G. B. Mills J. Mirabal C. D. Moore J. Mousseau P. Nienaber B. Osmanov Z. Pavlovic D. Perevalov H. Ray B. P. Roe A. D. Russell M. H. Shaevitz J. Spitz I. Stancu R. Tayloe R. T. Thornton R. G. Van de Water M. O. Wascko D. H. White D. A. Wickremasinghe G. P. Zeller E. D. Zimmerman
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classification hep-ex hep-phnucl-ex
keywords muonchargeddecayenergyeventsfirstmeasurementneutrino
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We report the first measurement of monoenergetic muon neutrino charged current interactions. MiniBooNE has isolated 236 MeV muon neutrino events originating from charged kaon decay at rest ($K^+ \rightarrow \mu^+ \nu_\mu$) at the NuMI beamline absorber. These signal $\nu_\mu$-carbon events are distinguished from primarily pion decay in flight $\nu_\mu$ and $\overline{\nu}_\mu$ backgrounds produced at the target station and decay pipe using their arrival time and reconstructed muon energy. The significance of the signal observation is at the 3.9$\sigma$ level. The muon kinetic energy, neutrino-nucleus energy transfer ($\omega=E_\nu-E_\mu$), and total cross section for these events is extracted. This result is the first known-energy, weak-interaction-only probe of the nucleus to yield a measurement of $\omega$ using neutrinos, a quantity thus far only accessible through electron scattering.

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  1. Search for the production of Higgs-portal scalar bosons in the NuMI beam using the MicroBooNE detector

    hep-ex 2025-01 unverdicted novelty 5.0

    MicroBooNE sets the strongest limits to date on the Higgs-portal scalar mixing angle θ below ~3×10^{-4} for masses 110-155 MeV using kaon decays in the NuMI beam and 2.01×10^{21} POT exposure.