TY - JOUR
T1 - Explaining the MiniBooNE anomalous excess via a leptophilic ALP-sterile neutrino coupling
AU - Chang, Chia Hung Vincent
AU - Chen, Chuan Ren
AU - Ho, Shu Yu
AU - Tseng, Shih Yen
N1 - Funding Information:
S. Y. H. would like to thank P. Ko, J. Kersten, K. Kunio, and C. T. Lu at KIAS for their helpful discussions and useful information. S. Y. H. and S. Y. T. are grateful to the members of the High Energy Physics Group at National Taiwan Normal University for hospitality, local support, and the beginning of this work. This work was supported in part by the Ministry of Science and Technology (MOST) of Taiwan under Grant No. MOST 109-2112-M-003-004 (C. R. C.), the ORD of National Taiwan Normal University under Grant No. 109000128 (C. H. V. C.), Korea Institute for Advanced Study under Grant No. PG081201 (S. Y. H.), and by JSPS KAKENHI Grant No. 20J22214 (S. Y. T.).
Funding Information:
Ministry of Science and Technology, Taiwan National Taiwan Normal University Korea Institute for Advanced Study Japan Society for the Promotion of Science
Publisher Copyright:
© 2021 Published by the American Physical Society
PY - 2021/7/1
Y1 - 2021/7/1
N2 - Recently, the MiniBooNE experiment at Fermilab has updated the results with increased data and reported an excess of electronlike events () in the neutrino operation mode. In this paper, we propose a scenario to account for the excess where a Dirac-type sterile neutrino, produced by a charged kaon decay through the neutrino mixing, decays into a leptophilic axionlike particle () and a muon neutrino. The electron-positron pairs produced from the decays can be interpreted as electronlike events provided that their opening angle is sufficiently small. In our framework, we consider the with a mass and an inverse decay constant , allowed by the astrophysical and experimental constraints. Then, after integrating the predicted angular or visible energy spectra of the to obtain the total excess event number, we find that our scenario with sterile neutrino masses within () and neutrino mixing parameters between () can explain the MiniBooNE data.
AB - Recently, the MiniBooNE experiment at Fermilab has updated the results with increased data and reported an excess of electronlike events () in the neutrino operation mode. In this paper, we propose a scenario to account for the excess where a Dirac-type sterile neutrino, produced by a charged kaon decay through the neutrino mixing, decays into a leptophilic axionlike particle () and a muon neutrino. The electron-positron pairs produced from the decays can be interpreted as electronlike events provided that their opening angle is sufficiently small. In our framework, we consider the with a mass and an inverse decay constant , allowed by the astrophysical and experimental constraints. Then, after integrating the predicted angular or visible energy spectra of the to obtain the total excess event number, we find that our scenario with sterile neutrino masses within () and neutrino mixing parameters between () can explain the MiniBooNE data.
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U2 - 10.1103/PhysRevD.104.015030
DO - 10.1103/PhysRevD.104.015030
M3 - Article
AN - SCOPUS:85111844598
SN - 2470-0010
VL - 104
JO - Physical Review D
JF - Physical Review D
IS - 1
M1 - 015030
ER -