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 (US)
Title of host publicationAIP Conference Proceedings
Pages564-566
Number of pages3
Volume1441
DOIs
StatePublished - 2012
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 AIP Conference Proceedings (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.

AIP Conference Proceedings. 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 AIP Conference Proceedings. 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 AIP Conference Proceedings. 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. AIP Conference Proceedings. Vol. 1441 2012. pp. 564-566
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