T. Sullivan
University of British Columbia
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Publication
Featured researches published by T. Sullivan.
Physical Review Letters | 2015
A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. Britton; D. A. Bryman; D. vom Bruch; S. Chen; J. Comfort; M. Ding; L. Doria; S. Cuen-Rochin; P. Gumplinger; A. Hussein; Y. Igarashi; S. Ito; S. H. Kettell; L. Kurchaninov; L. S. Littenberg; C. Malbrunot; R. E. Mischke; Toshio Numao; D. Protopopescu; A. Sher; T. Sullivan; D. Vavilov; Koichi Yamada
A new measurement of the branching ratio,
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2015
A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. vom Bruch; D. A. Bryman; S. Cuen-Rochin; L. Doria; P. Gumplinger; A. Hussein; Y. Igarashi; N. Ito; S. Ito; S. H. Kettell; L. Kurchaninov; L. S. Littenberg; C. Malbrunot; R. E. Mischke; A. Muroi; T. Numao; G. Sheffer; A. Sher; T. Sullivan; K. Tauchi; D. Vavilov; Koichi Yamada; M. Yoshida
R_{e/mu} =Gamma (pi^+ rightarrow mbox{e}^+ nu + pi^+ rightarrow mbox{e}^+ nu gamma)/ Gamma (pi^+ rightarrow mu^+ nu + pi^+ rightarrow mu^+ nu gamma)
Hyperfine Interactions | 2016
S. Ito; A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. Britton; D. A. Bryman; D. vom Bruch; S. Chen; S. Cuen-Rochin; L. Doria; P. Gumplinger; A. Hussein; Y. Igarashi; S. H. Kettell; L. Kurchaninov; L. S. Littenberg; C. Malbrunot; R. E. Mischke; T. Numao; D. Protopopescu; A. Sher; T. Sullivan; D. Vavilov
, resulted in
Physical Review Letters | 2015
A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. Britton; D. A. Bryman; D. vom Bruch; S. Chen; M. Ding; L. Doria; S. Cuen-Rochin; P. Gumplinger; A. Hussein; Y. Igarashi; S. Ito; S. H. Kettell; L. Kurchaninov; L. S. Littenberg; C. Malbrunot; R. E. Mischke; T. Numao; D. Protopopescu; A. Sher; T. Sullivan; D. Vavilov; Koichi Yamada
R_{e/mu}^{exp} = (1.2344 pm 0.0023 (stat) pm 0.0019 (syst)) times 10^{-4}
19TH PARTICLES AND NUCLEI INTERNATIONAL CONFERENCE (PANIC11) | 2012
C. Malbrunot; A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. Britton; D. A. Bryman; S. Chen; M. Ding; Luca Doria; P. Gumplinger; A. Hussein; Youichi Igarashi; S. Ito; S. Kettell; Y. Kuno; L. Kurchaninov; L.S. Littenberg; T. Numao; A. Sher; T. Sullivan; D. Vavilov; M. Yoshida
. This is in agreement with the standard model prediction and improves the test of electron-muon universality to the level of 0.1 %.
Hyperfine Interactions | 2017
S. Ito; A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. Britton; D. A. Bryman; D. vom Bruch; S. Chen; S. Cuen-Rochin; L. Doria; P. Gumplinger; A. Hussein; Y. Igarashi; S. H. Kettell; L. Kurchaninov; L. S. Littenberg; C. Malbrunot; R. E. Mischke; T. Numao; D. Protopopescu; A. Sher; T. Sullivan; D. Vavilov
Abstract The PIENU experiment at TRIUMF is aimed at a measurement of the branching ratio R e / μ = Γ ( ( π + → e + ν e ) + ( π + → e + ν e γ ) ) / Γ ( ( π + → μ + ν μ ) + ( π + → μ + ν μ γ ) ) with precision 0.1 % . Incident pions, delivered at the rate of 60xa0kHz with momentum 75xa0MeV/c, were degraded and stopped in a plastic scintillator target. Pions and their decay product positrons were detected with plastic scintillators and tracked with multiwire proportional chambers and silicon strip detectors. The energies of the positrons were measured in a spectrometer consisting of a large NaI(Tl) crystal surrounded by an array of pure CsI crystals. This paper provides a description of the PIENU experimental apparatus and its performance in pursuit of R e / μ .
Journal of Physics: Conference Series | 2015
S. Ito; A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. Britton; D. A. Bryman; D. vom Bruch; S. Chen; S. Cuen-Rochin; L. Doria; P. Gumplinger; A. Hussein; Y. Igarashi; S. H. Kettell; L. Kurchaninov; L. S. Littenberg; C. Malbrunot; R. E. Mischke; T. Numao; D. Protopopescu; A. Sher; T. Sullivan; D. Vavilov
The PIENU experiment aims to measure the branching ratio of the charged pion decay with precision of < 0.1 %. This measurement is much sensitive to search for massive neutrinos coupled to electrons in ({pi }^{+}{rightarrow }e^{+}{nu }_{e}) decay. The initial analysis was completed and the upper limit on the neutrino mixing parameter |Uei|2 in the neutrino mass range of 0 to 55 MeV/c2 was improved by a factor of 1.5, and the sensitivity for the mass range of 68 to 129 MeV/c2 was improve by a factor of up to 4.
Physical Review D | 2018
A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. Britton; D. vom Bruch; D. A. Bryman; S. Chen; S. Cuen-Rochin; L. Doria; P. Gumplinger; A. Hussein; Y. Igarashi; S. Ito; S. H. Kettell; L. Kurchaninov; L. S. Littenberg; C. Malbrunot; R. E. Mischke; T. Numao; D. Protopopescu; A. Sher; T. Sullivan; D. Vavilov
A new measurement of the branching ratio,
Proceedings of The 3rd International Symposium on “Quest for the Origin of Particles and the Universe" — PoS(KMI2017) | 2017
Shintaro Ito; A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. Britton; D. A. Bryman; D vom Bruch; S. Chen; S. Cuen-Rochin; L. Doria; P. Gumplinger; A. Husseina; Y. Igarashi; S. H. Kettell; L. Kurchaninov; L. S. Littenberg; C. Malbrunot; R. E. Mischke; T. Numao; D. Protopopescu; A. Sher; T. Sullivan; D. Vavilov
R_{e/mu} =Gamma (pi^+ rightarrow mbox{e}^+ nu + pi^+ rightarrow mbox{e}^+ nu gamma)/ Gamma (pi^+ rightarrow mu^+ nu + pi^+ rightarrow mu^+ nu gamma)
Physical Review Letters | 2015
A. A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. Britton; D. A. Bryman; D. vom Bruch; S. Chen; M. Ding; L. Doria; S. Cuen-Rochin; P. Gumplinger; A. Hussein; Y. Igarashi; S. Ito; S. H. Kettell; L. Kurchaninov; L. S. Littenberg; C. Malbrunot; R. E. Mischke; T. Numao; D. Protopopescu; A. Sher; T. Sullivan; D. Vavilov; Koichi Yamada
, resulted in
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