Improved measurement of the positive-muon lifetime and determination of the fermi constant

D. B. Chitwood; T. I. Banks; M. J. Barnes; S. Battu; R. M. Carey; S. Cheekatmalla; S. M. Clayton; J. Crnkovic; K. M. Crowe; P. T. Debevec; S. Dhamija; W. Earle; A. Gafarov; K. Giovanetti; T. P. Gorringe; F. E. Gray; M. Hance; D. W. Hertzog; M. F. Hare; P. Kammel; B. Kiburg; J. Kunkle; B. Lauss; I. Logashenko; K. R. Lynch; R. McNabb; J. P. Miller; F. Mulhauser; C. J.G. Onderwater; C. S. Özben; Q. Peng; C. C. Polly; S. Rath; B. L. Roberts; V. Tishchenko; G. D. Wait; J. Wasserman; D. M. Webber; P. Winter; P. A. Zołnierczuk

doi:10.1103/PhysRevLett.99.032001

Improved measurement of the positive-muon lifetime and determination of the fermi constant

D. B. Chitwood, T. I. Banks, M. J. Barnes, S. Battu, R. M. Carey, S. Cheekatmalla, S. M. Clayton, J. Crnkovic, K. M. Crowe, P. T. Debevec, S. Dhamija, W. Earle, A. Gafarov, K. Giovanetti, T. P. Gorringe, F. E. Gray, M. Hance, D. W. Hertzog, M. F. Hare, P. KammelB. Kiburg, J. Kunkle, B. Lauss, I. Logashenko, K. R. Lynch, R. McNabb, J. P. Miller, F. Mulhauser, C. J.G. Onderwater, C. S. Özben, Q. Peng, C. C. Polly, S. Rath, B. L. Roberts, V. Tishchenko, G. D. Wait, J. Wasserman, D. M. Webber, P. Winter, P. A. Zołnierczuk

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Abstract

The mean life of the positive muon has been measured to a precision of 11 ppm using a low-energy, pulsed muon beam stopped in a ferromagnetic target, which was surrounded by a scintillator detector array. The result, τμ=2.197013(24)μs, is in excellent agreement with the previous world average. The new world average τμ=2.197019(21)μs determines the Fermi constant GF=1.166371(6)×10-5GeV-2 (5 ppm). Additionally, the precision measurement of the positive-muon lifetime is needed to determine the nucleon pseudoscalar coupling gP.

Original language	English
Article number	032001
Journal	Physical Review Letters
Volume	99
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.99.032001
State	Published - Jul 16 2007
Externally published	Yes

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Chitwood, D. B., Banks, T. I., Barnes, M. J., Battu, S., Carey, R. M., Cheekatmalla, S., Clayton, S. M., Crnkovic, J., Crowe, K. M., Debevec, P. T., Dhamija, S., Earle, W., Gafarov, A., Giovanetti, K., Gorringe, T. P., Gray, F. E., Hance, M., Hertzog, D. W., Hare, M. F., ... Zołnierczuk, P. A. (2007). Improved measurement of the positive-muon lifetime and determination of the fermi constant. Physical Review Letters, 99(3), Article 032001. https://doi.org/10.1103/PhysRevLett.99.032001

@article{1ae540fc5bc04adbb58730d396522417,

title = "Improved measurement of the positive-muon lifetime and determination of the fermi constant",

abstract = "The mean life of the positive muon has been measured to a precision of 11 ppm using a low-energy, pulsed muon beam stopped in a ferromagnetic target, which was surrounded by a scintillator detector array. The result, τμ=2.197013(24)μs, is in excellent agreement with the previous world average. The new world average τμ=2.197019(21)μs determines the Fermi constant GF=1.166371(6)×10-5GeV-2 (5 ppm). Additionally, the precision measurement of the positive-muon lifetime is needed to determine the nucleon pseudoscalar coupling gP.",

author = "Chitwood, {D. B.} and Banks, {T. I.} and Barnes, {M. J.} and S. Battu and Carey, {R. M.} and S. Cheekatmalla and Clayton, {S. M.} and J. Crnkovic and Crowe, {K. M.} and Debevec, {P. T.} and S. Dhamija and W. Earle and A. Gafarov and K. Giovanetti and Gorringe, {T. P.} and Gray, {F. E.} and M. Hance and Hertzog, {D. W.} and Hare, {M. F.} and P. Kammel and B. Kiburg and J. Kunkle and B. Lauss and I. Logashenko and Lynch, {K. R.} and R. McNabb and Miller, {J. P.} and F. Mulhauser and Onderwater, {C. J.G.} and {\"O}zben, {C. S.} and Q. Peng and Polly, {C. C.} and S. Rath and Roberts, {B. L.} and V. Tishchenko and Wait, {G. D.} and J. Wasserman and Webber, {D. M.} and P. Winter and Zo{\l}nierczuk, {P. A.}",

year = "2007",

month = jul,

day = "16",

doi = "10.1103/PhysRevLett.99.032001",

language = "English",

volume = "99",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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Chitwood, DB, Banks, TI, Barnes, MJ, Battu, S, Carey, RM, Cheekatmalla, S, Clayton, SM, Crnkovic, J, Crowe, KM, Debevec, PT, Dhamija, S, Earle, W, Gafarov, A, Giovanetti, K, Gorringe, TP, Gray, FE, Hance, M, Hertzog, DW, Hare, MF, Kammel, P, Kiburg, B, Kunkle, J, Lauss, B, Logashenko, I, Lynch, KR, McNabb, R, Miller, JP, Mulhauser, F, Onderwater, CJG, Özben, CS, Peng, Q, Polly, CC, Rath, S, Roberts, BL, Tishchenko, V, Wait, GD, Wasserman, J, Webber, DM, Winter, P & Zołnierczuk, PA 2007, 'Improved measurement of the positive-muon lifetime and determination of the fermi constant', Physical Review Letters, vol. 99, no. 3, 032001. https://doi.org/10.1103/PhysRevLett.99.032001

TY - JOUR

T1 - Improved measurement of the positive-muon lifetime and determination of the fermi constant

AU - Chitwood, D. B.

AU - Banks, T. I.

AU - Barnes, M. J.

AU - Battu, S.

AU - Carey, R. M.

AU - Cheekatmalla, S.

AU - Clayton, S. M.

AU - Crnkovic, J.

AU - Crowe, K. M.

AU - Debevec, P. T.

AU - Dhamija, S.

AU - Earle, W.

AU - Gafarov, A.

AU - Giovanetti, K.

AU - Gorringe, T. P.

AU - Gray, F. E.

AU - Hance, M.

AU - Hertzog, D. W.

AU - Hare, M. F.

AU - Kammel, P.

AU - Kiburg, B.

AU - Kunkle, J.

AU - Lauss, B.

AU - Logashenko, I.

AU - Lynch, K. R.

AU - McNabb, R.

AU - Miller, J. P.

AU - Mulhauser, F.

AU - Onderwater, C. J.G.

AU - Özben, C. S.

AU - Peng, Q.

AU - Polly, C. C.

AU - Rath, S.

AU - Roberts, B. L.

AU - Tishchenko, V.

AU - Wait, G. D.

AU - Wasserman, J.

AU - Webber, D. M.

AU - Winter, P.

AU - Zołnierczuk, P. A.

PY - 2007/7/16

Y1 - 2007/7/16

N2 - The mean life of the positive muon has been measured to a precision of 11 ppm using a low-energy, pulsed muon beam stopped in a ferromagnetic target, which was surrounded by a scintillator detector array. The result, τμ=2.197013(24)μs, is in excellent agreement with the previous world average. The new world average τμ=2.197019(21)μs determines the Fermi constant GF=1.166371(6)×10-5GeV-2 (5 ppm). Additionally, the precision measurement of the positive-muon lifetime is needed to determine the nucleon pseudoscalar coupling gP.

AB - The mean life of the positive muon has been measured to a precision of 11 ppm using a low-energy, pulsed muon beam stopped in a ferromagnetic target, which was surrounded by a scintillator detector array. The result, τμ=2.197013(24)μs, is in excellent agreement with the previous world average. The new world average τμ=2.197019(21)μs determines the Fermi constant GF=1.166371(6)×10-5GeV-2 (5 ppm). Additionally, the precision measurement of the positive-muon lifetime is needed to determine the nucleon pseudoscalar coupling gP.

UR - http://www.scopus.com/inward/record.url?scp=34547152000&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.99.032001

DO - 10.1103/PhysRevLett.99.032001

M3 - Article

AN - SCOPUS:34547152000

SN - 0031-9007

VL - 99

JO - Physical Review Letters

JF - Physical Review Letters

IS - 3

M1 - 032001

ER -

Improved measurement of the positive-muon lifetime and determination of the fermi constant

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