Radiative muon capture on hydrogen and the induced pseudoscalar coupling constant

M. D. Hasinoff; S. Ahmad; D. S. Armstrong; G. Azuelos; P. Bergbusch; W. Bertl; M. Blecher; C. Q. Chen; P. Depommier; B. C. Doyle; T. Von Egidy; T. P. Gorringe; P. Gumplinger; D. C. Healey; G. Jonkmans; A. J. Larabee; J. A. Macdonald; S. C. McDonald; M. Munro; J. M. Poutissou; R. Poutissou; B. C. Robertson; E. Saettler; D. G. Sample; C. Sigler; G. N. Taylor; D. H. Wright; N. S. Zhang

Radiative muon capture on hydrogen and the induced pseudoscalar coupling constant

M. D. Hasinoff, S. Ahmad, D. S. Armstrong, G. Azuelos, P. Bergbusch, W. Bertl, M. Blecher, C. Q. Chen, P. Depommier, B. C. Doyle, T. Von Egidy, T. P. Gorringe, P. Gumplinger, D. C. Healey, G. Jonkmans, A. J. Larabee, J. A. Macdonald, S. C. McDonald, M. Munro, J. M. PoutissouR. Poutissou, B. C. Robertson, E. Saettler, D. G. Sample, C. Sigler, G. N. Taylor, D. H. Wright, N. S. Zhang

Physics And Astronomy

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

Abstract

The first observation of the elementary process μ^-p → νμγ is reported. The muons were stopped in a purified liquid hydrogen target and captured mainly on the ortho on the ortho pμp molecule. The photons were converted to e⁺e^- pairs which were analyzed in a medium-resolution high-acceptance magnetic spectrometer. This reaction is particularly sensitive to the pseudoscalar coupling constant, gp, which was found to be: g_p(q² = -0.88m_μ²) = (10.0 ± 0.9 ± 0.3) • g_a(0). This value of g_p, determined from the photon energy spectrum using a perturbation theory calculation based on tree-level Feynman diagrams, is ∼ 1.5 times the theoretical value, (6.70 ± 0.18) • g_a (0).

Original language	English
Pages (from-to)	181-188
Number of pages	8
Journal	Hyperfine Interactions
Volume	103
Issue number	1-4
State	Published - Dec 1996

ASJC Scopus subject areas

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

Cite this

Hasinoff, M. D., Ahmad, S., Armstrong, D. S., Azuelos, G., Bergbusch, P., Bertl, W., Blecher, M., Chen, C. Q., Depommier, P., Doyle, B. C., Von Egidy, T., Gorringe, T. P., Gumplinger, P., Healey, D. C., Jonkmans, G., Larabee, A. J., Macdonald, J. A., McDonald, S. C., Munro, M., ... Zhang, N. S. (1996). Radiative muon capture on hydrogen and the induced pseudoscalar coupling constant. Hyperfine Interactions, 103(1-4), 181-188.

@article{d58ef5f393914811afca1917c8ff5692,

title = "Radiative muon capture on hydrogen and the induced pseudoscalar coupling constant",

abstract = "The first observation of the elementary process μ-p → νμγ is reported. The muons were stopped in a purified liquid hydrogen target and captured mainly on the ortho on the ortho pμp molecule. The photons were converted to e+e- pairs which were analyzed in a medium-resolution high-acceptance magnetic spectrometer. This reaction is particularly sensitive to the pseudoscalar coupling constant, gp, which was found to be: gp(q2 = -0.88mμ2) = (10.0 ± 0.9 ± 0.3) • ga(0). This value of gp, determined from the photon energy spectrum using a perturbation theory calculation based on tree-level Feynman diagrams, is ∼ 1.5 times the theoretical value, (6.70 ± 0.18) • ga (0).",

author = "Hasinoff, {M. D.} and S. Ahmad and Armstrong, {D. S.} and G. Azuelos and P. Bergbusch and W. Bertl and M. Blecher and Chen, {C. Q.} and P. Depommier and Doyle, {B. C.} and {Von Egidy}, T. and Gorringe, {T. P.} and P. Gumplinger and Healey, {D. C.} and G. Jonkmans and Larabee, {A. J.} and Macdonald, {J. A.} and McDonald, {S. C.} and M. Munro and Poutissou, {J. M.} and R. Poutissou and Robertson, {B. C.} and E. Saettler and Sample, {D. G.} and C. Sigler and Taylor, {G. N.} and Wright, {D. H.} and Zhang, {N. S.}",

year = "1996",

month = dec,

language = "English",

volume = "103",

pages = "181--188",

number = "1-4",

}

Hasinoff, MD, Ahmad, S, Armstrong, DS, Azuelos, G, Bergbusch, P, Bertl, W, Blecher, M, Chen, CQ, Depommier, P, Doyle, BC, Von Egidy, T, Gorringe, TP, Gumplinger, P, Healey, DC, Jonkmans, G, Larabee, AJ, Macdonald, JA, McDonald, SC, Munro, M, Poutissou, JM, Poutissou, R, Robertson, BC, Saettler, E, Sample, DG, Sigler, C, Taylor, GN, Wright, DH & Zhang, NS 1996, 'Radiative muon capture on hydrogen and the induced pseudoscalar coupling constant', Hyperfine Interactions, vol. 103, no. 1-4, pp. 181-188.

TY - JOUR

T1 - Radiative muon capture on hydrogen and the induced pseudoscalar coupling constant

AU - Hasinoff, M. D.

AU - Ahmad, S.

AU - Armstrong, D. S.

AU - Azuelos, G.

AU - Bergbusch, P.

AU - Bertl, W.

AU - Blecher, M.

AU - Chen, C. Q.

AU - Depommier, P.

AU - Doyle, B. C.

AU - Von Egidy, T.

AU - Gorringe, T. P.

AU - Gumplinger, P.

AU - Healey, D. C.

AU - Jonkmans, G.

AU - Larabee, A. J.

AU - Macdonald, J. A.

AU - McDonald, S. C.

AU - Munro, M.

AU - Poutissou, J. M.

AU - Poutissou, R.

AU - Robertson, B. C.

AU - Saettler, E.

AU - Sample, D. G.

AU - Sigler, C.

AU - Taylor, G. N.

AU - Wright, D. H.

AU - Zhang, N. S.

PY - 1996/12

Y1 - 1996/12

N2 - The first observation of the elementary process μ-p → νμγ is reported. The muons were stopped in a purified liquid hydrogen target and captured mainly on the ortho on the ortho pμp molecule. The photons were converted to e+e- pairs which were analyzed in a medium-resolution high-acceptance magnetic spectrometer. This reaction is particularly sensitive to the pseudoscalar coupling constant, gp, which was found to be: gp(q2 = -0.88mμ2) = (10.0 ± 0.9 ± 0.3) • ga(0). This value of gp, determined from the photon energy spectrum using a perturbation theory calculation based on tree-level Feynman diagrams, is ∼ 1.5 times the theoretical value, (6.70 ± 0.18) • ga (0).

AB - The first observation of the elementary process μ-p → νμγ is reported. The muons were stopped in a purified liquid hydrogen target and captured mainly on the ortho on the ortho pμp molecule. The photons were converted to e+e- pairs which were analyzed in a medium-resolution high-acceptance magnetic spectrometer. This reaction is particularly sensitive to the pseudoscalar coupling constant, gp, which was found to be: gp(q2 = -0.88mμ2) = (10.0 ± 0.9 ± 0.3) • ga(0). This value of gp, determined from the photon energy spectrum using a perturbation theory calculation based on tree-level Feynman diagrams, is ∼ 1.5 times the theoretical value, (6.70 ± 0.18) • ga (0).

UR - http://www.scopus.com/inward/record.url?scp=27144492363&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=27144492363&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:27144492363

SN - 0304-3843

VL - 103

SP - 181

EP - 188

JO - Hyperfine Interactions

JF - Hyperfine Interactions

IS - 1-4

ER -

Radiative muon capture on hydrogen and the induced pseudoscalar coupling constant

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this