Improved search for two body muon decay mu(+) - e(+) X-H

Improved search for two body muon decay mu(+) - e(+) X-H

Charged lepton flavor violating muon decay mu(+) -> e(+) X-H, where X-H is a massive neutral boson, was sought by searching for extra peaks in the muon decay mu(+) -> e(+)nu(nu) over bar energy spectrum in the m(XH), mass region 47.8-95.1 MeV/c(2). No signal was found and 90% confidence level...

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Veröffentlicht in:Physical review. D 2020-03, Vol.101 (5), Article 052014
Hauptverfasser: Aguilar-Arevalo, A., Aoki, M., Blecher, M., Britton, D., vom Bruch, D., Bryman, D. A., Chen, S., Comfort, J., Cuen-Rochin, S., Doria, L., Gumplinger, P., Hussein, A., Igarashi, Y., Ito, S., Kettell, S., Kurchaninov, L., Littenberg, L. S., Malbrunot, C., Mischke, R. E., Numao, T., Protopopescu, D., Sher, A., Sullivan, T., Vavilov, D.
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy & Astrophysics
Physical Sciences
Physics
Physics, Particles & Fields
Science & Technology
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Zusammenfassung:Charged lepton flavor violating muon decay mu(+) -> e(+) X-H, where X-H is a massive neutral boson, was sought by searching for extra peaks in the muon decay mu(+) -> e(+)nu(nu) over bar energy spectrum in the m(XH), mass region 47.8-95.1 MeV/c(2). No signal was found and 90% confidence level upper limits were set on the branching ratio Gamma(mu(+) -> e(+) X-H)/Gamma(mu(+)-> e(+)nu(nu) over bar) at the level of 10(-5) for this region.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.101.052014