Initial results from the PIENU experiment

T. Sullivan; A. Aguilar-Arevalo; M. Aoki; M. Blecher; D. I. Britton; D. A. Bryman; D. vom Bruch; S. Chen; J. Comfort; 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; D. Vavilov

doi:10.1007/s10751-016-1367-5

Initial results from the PIENU experiment

T. Sullivan, A. Aguilar-Arevalo, M. Aoki, M. Blecher, D. I. Britton, D. A. Bryman, D. vom Bruch, S. Chen, J. Comfort, 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. MischkeT. Numao, D. Protopopescu, A. Sher, D. Vavilov

School of Science

Research output: Contribution to journal › Article › peer-review

Abstract

The pion branching ratio, (Formula Presented.), provides a sensitive test of lepton universality and constraints on many new physics scenarios. The theoretical uncertainty on the Standard Model prediction of R_π is 0.02 %, a factor of twenty smaller than the experimental uncertainty. The analysis of a subset of data taken by the PIENU experiment will be presented. The result, R_π = (1.2344 ± 0.0023(stat) ± 0.0019(syst)) ⋅ 10⁻⁴ [1], is consistent with the Standard Model prediction and represents a 0.1 % constraint on lepton non-universality.

Original language	English
Article number	3
Journal	Hyperfine Interactions
Volume	238
Issue number	1
DOIs	https://doi.org/10.1007/s10751-016-1367-5
Publication status	Published - Nov 1 2017

Keywords

Electroweak physics
Lepton Universality
Pion decay
Precision measurements

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Condensed Matter Physics
Physical and Theoretical Chemistry

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10.1007/s10751-016-1367-5

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Sullivan, T., Aguilar-Arevalo, A., Aoki, M., Blecher, M., Britton, D. I., Bryman, D. A., vom Bruch, D., Chen, S., Comfort, J., Cuen-Rochin, S., Doria, L., Gumplinger, P., Hussein, A., Igarashi, Y., Ito, S., Kettell, S. H., Kurchaninov, L., Littenberg, L. S., Malbrunot, C., ... Vavilov, D. (2017). Initial results from the PIENU experiment. Hyperfine Interactions, 238(1), Article 3. https://doi.org/10.1007/s10751-016-1367-5

Sullivan, T, Aguilar-Arevalo, A, Aoki, M, Blecher, M, Britton, DI, Bryman, DA, vom Bruch, D, Chen, S, Comfort, J, Cuen-Rochin, S, Doria, L, Gumplinger, P, Hussein, A, Igarashi, Y, Ito, S, Kettell, SH, Kurchaninov, L, Littenberg, LS, Malbrunot, C, Mischke, RE, Numao, T, Protopopescu, D, Sher, A & Vavilov, D 2017, 'Initial results from the PIENU experiment', Hyperfine Interactions, vol. 238, no. 1, 3. https://doi.org/10.1007/s10751-016-1367-5

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title = "Initial results from the PIENU experiment",

abstract = "The pion branching ratio, (Formula Presented.), provides a sensitive test of lepton universality and constraints on many new physics scenarios. The theoretical uncertainty on the Standard Model prediction of Rπ is 0.02 %, a factor of twenty smaller than the experimental uncertainty. The analysis of a subset of data taken by the PIENU experiment will be presented. The result, Rπ = (1.2344 ± 0.0023(stat) ± 0.0019(syst)) ⋅ 10−4 [1], is consistent with the Standard Model prediction and represents a 0.1 % constraint on lepton non-universality.",

keywords = "Electroweak physics, Lepton Universality, Pion decay, Precision measurements",

author = "T. Sullivan and A. Aguilar-Arevalo and M. Aoki and M. Blecher and Britton, {D. I.} and Bryman, {D. A.} and {vom Bruch}, D. and S. Chen and J. Comfort and S. Cuen-Rochin and L. Doria and P. Gumplinger and A. Hussein and Y. Igarashi and S. Ito and Kettell, {S. H.} and L. Kurchaninov and Littenberg, {L. S.} and C. Malbrunot and Mischke, {R. E.} and T. Numao and D. Protopopescu and A. Sher and D. Vavilov",

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doi = "10.1007/s10751-016-1367-5",

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T1 - Initial results from the PIENU experiment

AU - Sullivan, T.

AU - Aguilar-Arevalo, A.

AU - Aoki, M.

AU - Blecher, M.

AU - Britton, D. I.

AU - Bryman, D. A.

AU - vom Bruch, D.

AU - Chen, S.

AU - Comfort, J.

AU - Cuen-Rochin, S.

AU - Doria, L.

AU - Gumplinger, P.

AU - Hussein, A.

AU - Igarashi, Y.

AU - Ito, S.

AU - Kettell, S. H.

AU - Kurchaninov, L.

AU - Littenberg, L. S.

AU - Malbrunot, C.

AU - Mischke, R. E.

AU - Numao, T.

AU - Protopopescu, D.

AU - Sher, A.

AU - Vavilov, D.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - The pion branching ratio, (Formula Presented.), provides a sensitive test of lepton universality and constraints on many new physics scenarios. The theoretical uncertainty on the Standard Model prediction of Rπ is 0.02 %, a factor of twenty smaller than the experimental uncertainty. The analysis of a subset of data taken by the PIENU experiment will be presented. The result, Rπ = (1.2344 ± 0.0023(stat) ± 0.0019(syst)) ⋅ 10−4 [1], is consistent with the Standard Model prediction and represents a 0.1 % constraint on lepton non-universality.

AB - The pion branching ratio, (Formula Presented.), provides a sensitive test of lepton universality and constraints on many new physics scenarios. The theoretical uncertainty on the Standard Model prediction of Rπ is 0.02 %, a factor of twenty smaller than the experimental uncertainty. The analysis of a subset of data taken by the PIENU experiment will be presented. The result, Rπ = (1.2344 ± 0.0023(stat) ± 0.0019(syst)) ⋅ 10−4 [1], is consistent with the Standard Model prediction and represents a 0.1 % constraint on lepton non-universality.

KW - Electroweak physics

KW - Lepton Universality

KW - Pion decay

KW - Precision measurements

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JO - Hyperfine Interactions

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ER -

Initial results from the PIENU experiment

Abstract

Keywords

ASJC Scopus subject areas

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