Measurement of muon capture on the proton to 1% precision and determination of the pseudoscalar coupling gP

V. A. Andreev; T. I. Banks; R. M. Carey; T. A. Case; S. M. Clayton; K. M. Crowe; J. Deutsch; J. Egger; S. J. Freedman; V. A. Ganzha; T. Gorringe; F. E. Gray; D. W. Hertzog; M. Hildebrandt; P. Kammel; B. Kiburg; S. Knaack; P. A. Kravtsov; A. G. Krivshich; B. Lauss; K. R. Lynch; E. M. Maev; O. E. Maev; F. Mulhauser; C. Petitjean; G. E. Petrov; R. Prieels; G. N. Schapkin; G. G. Semenchuk; M. A. Soroka; V. Tishchenko; A. A. Vasilyev; A. A. Vorobyov; M. E. Vznuzdaev; P. Winter

doi:10.1103/PhysRevLett.110.012504

Measurement of muon capture on the proton to 1% precision and determination of the pseudoscalar coupling g_P

V. A. Andreev, T. I. Banks, R. M. Carey, T. A. Case, S. M. Clayton, K. M. Crowe, J. Deutsch, J. Egger, S. J. Freedman, V. A. Ganzha, T. Gorringe, F. E. Gray, D. W. Hertzog, M. Hildebrandt, P. Kammel, B. Kiburg, S. Knaack, P. A. Kravtsov, A. G. Krivshich, B. LaussK. R. Lynch, E. M. Maev, O. E. Maev, F. Mulhauser, C. Petitjean, G. E. Petrov, R. Prieels, G. N. Schapkin, G. G. Semenchuk, M. A. Soroka, V. Tishchenko, A. A. Vasilyev, A. A. Vorobyov, M. E. Vznuzdaev, P. Winter

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Abstract

The MuCap experiment at the Paul Scherrer Institute has measured the rate Λ_S of muon capture from the singlet state of the muonic hydrogen atom to a precision of 1%. A muon beam was stopped in a time projection chamber filled with 10-bar, ultrapure hydrogen gas. Cylindrical wire chambers and a segmented scintillator barrel detected electrons from muon decay. Λ_S is determined from the difference between the μ^- disappearance rate in hydrogen and the free muon decay rate. The result is based on the analysis of 1.2×1010 μ^- decays, from which we extract the capture rate Λ_S=(714.9±5. 4_stat±5.1_syst) s^-1 and derive the proton's pseudoscalar coupling g_P(q02=-0.88mμ2)=8.06±0.55.

Original language	English (US)
Article number	012504
Journal	Physical Review Letters
Volume	110
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.110.012504
State	Published - Jan 3 2013
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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Andreev, V. A., Banks, T. I., Carey, R. M., Case, T. A., Clayton, S. M., Crowe, K. M., Deutsch, J., Egger, J., Freedman, S. J., Ganzha, V. A., Gorringe, T., Gray, F. E., Hertzog, D. W., Hildebrandt, M., Kammel, P., Kiburg, B., Knaack, S., Kravtsov, P. A., Krivshich, A. G., ... Winter, P. (2013). Measurement of muon capture on the proton to 1% precision and determination of the pseudoscalar coupling g_P. Physical Review Letters, 110(1), Article 012504. https://doi.org/10.1103/PhysRevLett.110.012504

Andreev, VA, Banks, TI, Carey, RM, Case, TA, Clayton, SM, Crowe, KM, Deutsch, J, Egger, J, Freedman, SJ, Ganzha, VA, Gorringe, T, Gray, FE, Hertzog, DW, Hildebrandt, M, Kammel, P, Kiburg, B, Knaack, S, Kravtsov, PA, Krivshich, AG, Lauss, B, Lynch, KR, Maev, EM, Maev, OE, Mulhauser, F, Petitjean, C, Petrov, GE, Prieels, R, Schapkin, GN, Semenchuk, GG, Soroka, MA, Tishchenko, V, Vasilyev, AA, Vorobyov, AA, Vznuzdaev, ME & Winter, P 2013, 'Measurement of muon capture on the proton to 1% precision and determination of the pseudoscalar coupling g_P', Physical Review Letters, vol. 110, no. 1, 012504. https://doi.org/10.1103/PhysRevLett.110.012504

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title = "Measurement of muon capture on the proton to 1% precision and determination of the pseudoscalar coupling gP",

abstract = "The MuCap experiment at the Paul Scherrer Institute has measured the rate ΛS of muon capture from the singlet state of the muonic hydrogen atom to a precision of 1%. A muon beam was stopped in a time projection chamber filled with 10-bar, ultrapure hydrogen gas. Cylindrical wire chambers and a segmented scintillator barrel detected electrons from muon decay. ΛS is determined from the difference between the μ- disappearance rate in hydrogen and the free muon decay rate. The result is based on the analysis of 1.2×1010 μ- decays, from which we extract the capture rate ΛS=(714.9±5. 4stat±5.1syst) s-1 and derive the proton's pseudoscalar coupling gP(q02=-0.88mμ2)=8.06±0.55.",

author = "Andreev, {V. A.} and Banks, {T. I.} and Carey, {R. M.} and Case, {T. A.} and Clayton, {S. M.} and Crowe, {K. M.} and J. Deutsch and J. Egger and Freedman, {S. J.} and Ganzha, {V. A.} and T. Gorringe and Gray, {F. E.} and Hertzog, {D. W.} and M. Hildebrandt and P. Kammel and B. Kiburg and S. Knaack and Kravtsov, {P. A.} and Krivshich, {A. G.} and B. Lauss and Lynch, {K. R.} and Maev, {E. M.} and Maev, {O. E.} and F. Mulhauser and C. Petitjean and Petrov, {G. E.} and R. Prieels and Schapkin, {G. N.} and Semenchuk, {G. G.} and Soroka, {M. A.} and V. Tishchenko and Vasilyev, {A. A.} and Vorobyov, {A. A.} and Vznuzdaev, {M. E.} and P. Winter",

year = "2013",

month = jan,

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doi = "10.1103/PhysRevLett.110.012504",

language = "English (US)",

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T1 - Measurement of muon capture on the proton to 1% precision and determination of the pseudoscalar coupling gP

AU - Andreev, V. A.

AU - Banks, T. I.

AU - Carey, R. M.

AU - Case, T. A.

AU - Clayton, S. M.

AU - Crowe, K. M.

AU - Deutsch, J.

AU - Egger, J.

AU - Freedman, S. J.

AU - Ganzha, V. A.

AU - Gorringe, T.

AU - Gray, F. E.

AU - Hertzog, D. W.

AU - Hildebrandt, M.

AU - Kammel, P.

AU - Kiburg, B.

AU - Knaack, S.

AU - Kravtsov, P. A.

AU - Krivshich, A. G.

AU - Lauss, B.

AU - Lynch, K. R.

AU - Maev, E. M.

AU - Maev, O. E.

AU - Mulhauser, F.

AU - Petitjean, C.

AU - Petrov, G. E.

AU - Prieels, R.

AU - Schapkin, G. N.

AU - Semenchuk, G. G.

AU - Soroka, M. A.

AU - Tishchenko, V.

AU - Vasilyev, A. A.

AU - Vorobyov, A. A.

AU - Vznuzdaev, M. E.

AU - Winter, P.

PY - 2013/1/3

Y1 - 2013/1/3

N2 - The MuCap experiment at the Paul Scherrer Institute has measured the rate ΛS of muon capture from the singlet state of the muonic hydrogen atom to a precision of 1%. A muon beam was stopped in a time projection chamber filled with 10-bar, ultrapure hydrogen gas. Cylindrical wire chambers and a segmented scintillator barrel detected electrons from muon decay. ΛS is determined from the difference between the μ- disappearance rate in hydrogen and the free muon decay rate. The result is based on the analysis of 1.2×1010 μ- decays, from which we extract the capture rate ΛS=(714.9±5. 4stat±5.1syst) s-1 and derive the proton's pseudoscalar coupling gP(q02=-0.88mμ2)=8.06±0.55.

AB - The MuCap experiment at the Paul Scherrer Institute has measured the rate ΛS of muon capture from the singlet state of the muonic hydrogen atom to a precision of 1%. A muon beam was stopped in a time projection chamber filled with 10-bar, ultrapure hydrogen gas. Cylindrical wire chambers and a segmented scintillator barrel detected electrons from muon decay. ΛS is determined from the difference between the μ- disappearance rate in hydrogen and the free muon decay rate. The result is based on the analysis of 1.2×1010 μ- decays, from which we extract the capture rate ΛS=(714.9±5. 4stat±5.1syst) s-1 and derive the proton's pseudoscalar coupling gP(q02=-0.88mμ2)=8.06±0.55.

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JF - Physical Review Letters

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Measurement of muon capture on the proton to 1% precision and determination of the pseudoscalar coupling g_P

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