Measurement of the pion branching ratio at TRIUMF

C. Malbrunot, A. A. Aguilar-Arevalo, M. Aoki, M. Blecher, D. I. Britton, D. A. Bryman, S. Chen, J. Comfort, M. Ding, L. Doria, P. Gumplinger, A. Hussein, Y. Igarashi, S. Ito, S. H. Kettell, Y. Kuno, L. Kurchaninov, L. Littenberg, T. Numao, A. SherT. Sullivan, D. Vavilov, M. Yoshida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The branching ratio of pion decays, R=Γ(π +→e +ν e+→e +ν eγ)/Γ(π +→μ +ν μ+→μ +ν μγ is one of the most accurately calculated decay processes involving hadrons and has provided one of the most stringent tests of the hypothesis of electron-muon universality in weak interactions. The current experimental branching ratio R exp=(1.230±0.004)×10 -4 is 40 times less precise than the theoretical prediction R SM=1.2352(1)10 -4. The TRIUMF PIENU experiment aims at measuring the pion branching ratio with a precision improved by at least a factor five.

Original languageEnglish
Title of host publication19th Particles and Nuclei International Conference, PANIC11
Pages564-566
Number of pages3
Volume1441
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event19th Particles and Nuclei International Conference, PANIC11 - Cambridge, MA, United States
Duration: Jul 24 2011Jul 29 2011

Other

Other19th Particles and Nuclei International Conference, PANIC11
CountryUnited States
CityCambridge, MA
Period7/24/117/29/11

Fingerprint

pions
decay
hadrons
muons
predictions
electrons

Keywords

  • Pion branching ratio
  • Standard Model test
  • universality

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Malbrunot, C., Aguilar-Arevalo, A. A., Aoki, M., Blecher, M., Britton, D. I., Bryman, D. A., ... Yoshida, M. (2012). Measurement of the pion branching ratio at TRIUMF. In 19th Particles and Nuclei International Conference, PANIC11 (Vol. 1441, pp. 564-566) https://doi.org/10.1063/1.3700618

Measurement of the pion branching ratio at TRIUMF. / Malbrunot, C.; Aguilar-Arevalo, A. A.; Aoki, M.; Blecher, M.; Britton, D. I.; Bryman, D. A.; Chen, S.; Comfort, J.; Ding, M.; Doria, L.; Gumplinger, P.; Hussein, A.; Igarashi, Y.; Ito, S.; Kettell, S. H.; Kuno, Y.; Kurchaninov, L.; Littenberg, L.; Numao, T.; Sher, A.; Sullivan, T.; Vavilov, D.; Yoshida, M.

19th Particles and Nuclei International Conference, PANIC11. Vol. 1441 2012. p. 564-566.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Malbrunot, C, Aguilar-Arevalo, AA, Aoki, M, Blecher, M, Britton, DI, Bryman, DA, Chen, S, Comfort, J, Ding, M, Doria, L, Gumplinger, P, Hussein, A, Igarashi, Y, Ito, S, Kettell, SH, Kuno, Y, Kurchaninov, L, Littenberg, L, Numao, T, Sher, A, Sullivan, T, Vavilov, D & Yoshida, M 2012, Measurement of the pion branching ratio at TRIUMF. in 19th Particles and Nuclei International Conference, PANIC11. vol. 1441, pp. 564-566, 19th Particles and Nuclei International Conference, PANIC11, Cambridge, MA, United States, 7/24/11. https://doi.org/10.1063/1.3700618
Malbrunot C, Aguilar-Arevalo AA, Aoki M, Blecher M, Britton DI, Bryman DA et al. Measurement of the pion branching ratio at TRIUMF. In 19th Particles and Nuclei International Conference, PANIC11. Vol. 1441. 2012. p. 564-566 https://doi.org/10.1063/1.3700618
Malbrunot, C. ; Aguilar-Arevalo, A. A. ; Aoki, M. ; Blecher, M. ; Britton, D. I. ; Bryman, D. A. ; Chen, S. ; Comfort, J. ; Ding, M. ; Doria, L. ; Gumplinger, P. ; Hussein, A. ; Igarashi, Y. ; Ito, S. ; Kettell, S. H. ; Kuno, Y. ; Kurchaninov, L. ; Littenberg, L. ; Numao, T. ; Sher, A. ; Sullivan, T. ; Vavilov, D. ; Yoshida, M. / Measurement of the pion branching ratio at TRIUMF. 19th Particles and Nuclei International Conference, PANIC11. Vol. 1441 2012. pp. 564-566
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AU - Bryman, D. A.

AU - Chen, S.

AU - Comfort, J.

AU - Ding, M.

AU - Doria, L.

AU - Gumplinger, P.

AU - Hussein, A.

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AU - Ito, S.

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AU - Kurchaninov, L.

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AU - Yoshida, M.

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