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Improved Measurement of the π→eν Branching Ratio.
Aguilar-Arevalo, A; Aoki, M; Blecher, M; Britton, D I; Bryman, D A; Vom Bruch, D; Chen, S; Comfort, J; Ding, M; Doria, L; Cuen-Rochin, S; Gumplinger, P; Hussein, A; Igarashi, Y; Ito, S; Kettell, S H; Kurchaninov, L; Littenberg, L S; Malbrunot, C; Mischke, R E; Numao, T; Protopopescu, D; Sher, A; Sullivan, T; Vavilov, D; Yamada, K.
Afiliação
  • Aguilar-Arevalo A; Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de Mexico, Distrito Federal 04510 México.
  • Aoki M; Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
  • Blecher M; Physics Department, Virginia Tech, Blacksburg, Virginia 24061, USA.
  • Britton DI; Physics Department, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Bryman DA; Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
  • Vom Bruch D; Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
  • Chen S; Department of Engineering Physics, Tsinghua University, Beijing 100084, People's Republic of China.
  • Comfort J; Physics Department, Arizona State University, Tempe, Arizona 85287, USA.
  • Ding M; Department of Engineering Physics, Tsinghua University, Beijing 100084, People's Republic of China.
  • Doria L; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Cuen-Rochin S; Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
  • Gumplinger P; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Hussein A; University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada.
  • Igarashi Y; KEK, 1-1 Oho, Tsukuba-shi, Ibaraki 305-0801, Japan.
  • Ito S; Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
  • Kettell SH; Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Kurchaninov L; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Littenberg LS; Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Malbrunot C; Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
  • Mischke RE; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Numao T; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Protopopescu D; Physics Department, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Sher A; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Sullivan T; Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
  • Vavilov D; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Yamada K; Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
Phys Rev Lett ; 115(7): 071801, 2015 Aug 14.
Article em En | MEDLINE | ID: mdl-26317713
ABSTRACT
A new measurement of the branching ratio R_{e/µ}=Γ(π^{+}→e^{+}ν+π^{+}→e^{+}νγ)/Γ(π^{+}→µ^{+}ν+π^{+}→µ^{+}νγ) resulted in R_{e/µ}^{exp}=[1.2344±0.0023(stat)±0.0019(syst)]×10^{-4}. This is in agreement with the standard model prediction and improves the test of electron-muon universality to the level of 0.1%.
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Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2015 Tipo de documento: Article
Buscar no Google
Adicionar na Minha BVS
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Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2015 Tipo de documento: Article