Improved search for two body muon decay mu(+) -> e(+) X-H
Por:
Aguilar-Arevalo, A., Aoki, M., Blecher, M., Britton, I, 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., PIENU Collaboration
Publicada:
31 mar 2020
Categoría:
Physics and astronomy (miscellaneous)
Resumen:
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.
Filiaciones:
Aguilar-Arevalo, A.:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Cdmx 04510, Mexico
Aoki, M.:
Osaka Univ, Phys Dept, Toyonaka, Osaka 5600043, Japan
Blecher, M.:
Virginia Tech, Blacksburg, VA 24061 USA
vom Bruch, D.:
Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
Sorbonne Univ, Univ Paris Diderot, CNRS IN2P3, LPNHE, Paris, France
Bryman, D. A.:
Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
Chen, S.:
Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
Comfort, J.:
Arizona State Univ, Phys Dept, Tempe, AZ 85287 USA
Cuen-Rochin, S.:
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
Univ Autonoma Sinaloa, Culiacan, Sinaloa, Mexico
Doria, L.:
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany
Johannes Gutenberg Univ Mainz, Inst Kernphys, Johann Joachim Becher Weg 45, D-55128 Mainz, Germany
Gumplinger, P.:
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
Hussein, A.:
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
Univ Northern British Columbia, Prince George, BC V2N 4Z9, Canada
Igarashi, Y.:
KEK, 1-1 Oho, Tsukuba, Ibaraki 3003256, Japan
Ito, S.:
Osaka Univ, Phys Dept, Toyonaka, Osaka 5600043, Japan
Okayama Univ, Fac Sci, Okayama 7008530, Japan
Kettell, S.:
Brookhaven Natl Lab, New York, NY 11973 USA
Kurchaninov, L.:
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
Littenberg, L. S.:
Brookhaven Natl Lab, New York, NY 11973 USA
Malbrunot, C.:
Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
CERN, Expt Phys Dept, CH-1211 Geneva 23, Switzerland
Mischke, R. E.:
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
Numao, T.:
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
Protopopescu, D.:
I , Univ Glasgow, SUPA Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
Sher, A.:
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
Sullivan, T.:
Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
Univ Victoria, Dept Phys, Victoria, BC V8P 5C2, Canada
Vavilov, D.:
Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
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