A measurement of the weak axial couplings of the b- and c-quark

E. Elsen; J. Allison; K. Ambrus; R. J. Barlow; W. Bartel; S. Bethke; C. K. Bowdery; S. L. Cartwright; J. Chrin; D. Clarke; A. Dieckmann; I. P. Duerdoth; G. Eckerlin; R. Felst; A. J. Finch; F. Foster; T. Greenshaw; J. Hagemann; D. Haidt; J. Heintze; G. Heinzelmann; K. H. Hellenbrand; P. Hill; G. Hughes; H. Kado; T. Kawamoto; C. Kleinwort; G. Knies; T. Kobayashi; S. Komamiya; H. Krehbiel; J. v. Krogh; M. Kuhlen; F. K. Loebinger; A. A. Macbeth; N. Magnussen; R. Marshall; R. Meinke; R. P. Middleton; H. Minowa; P. G. Murphy; B. Naroska; J. M. Nye; J. Olsson; F. Ould-Saada; R. Ramcke; H. Rieseberg; D. Schmidt; H. von der Schmitt; L. Smolik; U. Schneekloth; J. A.J. Skard; J. Spitzer; P. Steffen; K. Stephens; A. Wagner; I. W. Walker; G. Weber; M. Zimmer; G. T. Zorn

doi:10.1007/BF01621022

A measurement of the weak axial couplings of the b- and c-quark

E. Elsen^*, J. Allison, K. Ambrus, R. J. Barlow, W. Bartel, S. Bethke, C. K. Bowdery, S. L. Cartwright, J. Chrin, D. Clarke, A. Dieckmann, I. P. Duerdoth, G. Eckerlin, R. Felst, A. J. Finch, F. Foster, T. Greenshaw, J. Hagemann, D. Haidt, J. HeintzeG. Heinzelmann, K. H. Hellenbrand, P. Hill, G. Hughes, H. Kado, T. Kawamoto, C. Kleinwort, G. Knies, T. Kobayashi, S. Komamiya, H. Krehbiel, J. v. Krogh, M. Kuhlen, F. K. Loebinger, A. A. Macbeth, N. Magnussen, R. Marshall, R. Meinke, R. P. Middleton, H. Minowa, P. G. Murphy, B. Naroska, J. M. Nye, J. Olsson, F. Ould-Saada, R. Ramcke, H. Rieseberg, D. Schmidt, H. von der Schmitt, L. Smolik, U. Schneekloth, J. A.J. Skard, J. Spitzer, P. Steffen, K. Stephens, A. Wagner, I. W. Walker, G. Weber, M. Zimmer, G. T. Zorn

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研究成果: Article › 査読

28 被引用数 (Scopus)

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The forward-backward charge asymmetries of the b and c quarks are measured with the JADE detector at PETRA at {Mathematical expression} GeV and 44 GeV using both electrons and muons to tag the heavy quarks. At {Mathematical expression} GeV, a simultaneous fit for the two asymmetries yields the result A_b=-9.3±5.2% (state.) nd A_c=-9.6±4.0% (stat.). The systematic errors are comparable with the statistical uncertainties. Combining the measurements at both energies and alternately constraining the weak coupling of the c and b quark to their Standard Model values (a_c=1, a_b=-1) increases the precision of the measurement of coupling constant of the other quark. Using this procedure a_b=-0.72±0.34 and a_c=0.79±0.40, where the numbers are corrected for {Mathematical expression} and the errors include both statistical and systematic contributions. The mixing parameter for continuum {Mathematical expression} is determined to be χ-0.24±0.12 if both heavy quark coupling constants are constrained to their values in the Standard Model.

本文言語	English
ページ（範囲）	349-359
ページ数	11
ジャーナル	Zeitschrift für Physik C Particles and Fields
巻	46
号	3
DOI	https://doi.org/10.1007/BF01621022
出版ステータス	Published - 1990 9月
外部発表	はい

ASJC Scopus subject areas

物理学および天文学（その他）

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10.1007/BF01621022

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Elsen, E., Allison, J., Ambrus, K., Barlow, R. J., Bartel, W., Bethke, S., Bowdery, C. K., Cartwright, S. L., Chrin, J., Clarke, D., Dieckmann, A., Duerdoth, I. P., Eckerlin, G., Felst, R., Finch, A. J., Foster, F., Greenshaw, T., Hagemann, J., Haidt, D., ... Zorn, G. T. (1990). A measurement of the weak axial couplings of the b- and c-quark. Zeitschrift für Physik C Particles and Fields, 46(3), 349-359. https://doi.org/10.1007/BF01621022

Elsen, E, Allison, J, Ambrus, K, Barlow, RJ, Bartel, W, Bethke, S, Bowdery, CK, Cartwright, SL, Chrin, J, Clarke, D, Dieckmann, A, Duerdoth, IP, Eckerlin, G, Felst, R, Finch, AJ, Foster, F, Greenshaw, T, Hagemann, J, Haidt, D, Heintze, J, Heinzelmann, G, Hellenbrand, KH, Hill, P, Hughes, G, Kado, H, Kawamoto, T, Kleinwort, C, Knies, G, Kobayashi, T, Komamiya, S, Krehbiel, H, v. Krogh, J, Kuhlen, M, Loebinger, FK, Macbeth, AA, Magnussen, N, Marshall, R, Meinke, R, Middleton, RP, Minowa, H, Murphy, PG, Naroska, B, Nye, JM, Olsson, J, Ould-Saada, F, Ramcke, R, Rieseberg, H, Schmidt, D, von der Schmitt, H, Smolik, L, Schneekloth, U, Skard, JAJ, Spitzer, J, Steffen, P, Stephens, K, Wagner, A, Walker, IW, Weber, G, Zimmer, M & Zorn, GT 1990, 'A measurement of the weak axial couplings of the b- and c-quark', Zeitschrift für Physik C Particles and Fields, vol. 46, no. 3, pp. 349-359. https://doi.org/10.1007/BF01621022

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title = "A measurement of the weak axial couplings of the b- and c-quark",

abstract = "The forward-backward charge asymmetries of the b and c quarks are measured with the JADE detector at PETRA at {Mathematical expression} GeV and 44 GeV using both electrons and muons to tag the heavy quarks. At {Mathematical expression} GeV, a simultaneous fit for the two asymmetries yields the result Ab=-9.3±5.2% (state.) nd Ac=-9.6±4.0% (stat.). The systematic errors are comparable with the statistical uncertainties. Combining the measurements at both energies and alternately constraining the weak coupling of the c and b quark to their Standard Model values (ac=1, ab=-1) increases the precision of the measurement of coupling constant of the other quark. Using this procedure ab=-0.72±0.34 and ac=0.79±0.40, where the numbers are corrected for {Mathematical expression} and the errors include both statistical and systematic contributions. The mixing parameter for continuum {Mathematical expression} is determined to be χ-0.24±0.12 if both heavy quark coupling constants are constrained to their values in the Standard Model.",

author = "E. Elsen and J. Allison and K. Ambrus and Barlow, {R. J.} and W. Bartel and S. Bethke and Bowdery, {C. K.} and Cartwright, {S. L.} and J. Chrin and D. Clarke and A. Dieckmann and Duerdoth, {I. P.} and G. Eckerlin and R. Felst and Finch, {A. J.} and F. Foster and T. Greenshaw and J. Hagemann and D. Haidt and J. Heintze and G. Heinzelmann and Hellenbrand, {K. H.} and P. Hill and G. Hughes and H. Kado and T. Kawamoto and C. Kleinwort and G. Knies and T. Kobayashi and S. Komamiya and H. Krehbiel and {v. Krogh}, J. and M. Kuhlen and Loebinger, {F. K.} and Macbeth, {A. A.} and N. Magnussen and R. Marshall and R. Meinke and Middleton, {R. P.} and H. Minowa and Murphy, {P. G.} and B. Naroska and Nye, {J. M.} and J. Olsson and F. Ould-Saada and R. Ramcke and H. Rieseberg and D. Schmidt and {von der Schmitt}, H. and L. Smolik and U. Schneekloth and Skard, {J. A.J.} and J. Spitzer and P. Steffen and K. Stephens and A. Wagner and Walker, {I. W.} and G. Weber and M. Zimmer and Zorn, {G. T.}",

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doi = "10.1007/BF01621022",

language = "English",

volume = "46",

pages = "349--359",

journal = "Zeitschrift f{\"u}r Physik C Particles and Fields",

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T1 - A measurement of the weak axial couplings of the b- and c-quark

AU - Elsen, E.

AU - Allison, J.

AU - Ambrus, K.

AU - Barlow, R. J.

AU - Bartel, W.

AU - Bethke, S.

AU - Bowdery, C. K.

AU - Cartwright, S. L.

AU - Chrin, J.

AU - Clarke, D.

AU - Dieckmann, A.

AU - Duerdoth, I. P.

AU - Eckerlin, G.

AU - Felst, R.

AU - Finch, A. J.

AU - Foster, F.

AU - Greenshaw, T.

AU - Hagemann, J.

AU - Haidt, D.

AU - Heintze, J.

AU - Heinzelmann, G.

AU - Hellenbrand, K. H.

AU - Hill, P.

AU - Hughes, G.

AU - Kado, H.

AU - Kawamoto, T.

AU - Kleinwort, C.

AU - Knies, G.

AU - Kobayashi, T.

AU - Komamiya, S.

AU - Krehbiel, H.

AU - v. Krogh, J.

AU - Kuhlen, M.

AU - Loebinger, F. K.

AU - Macbeth, A. A.

AU - Magnussen, N.

AU - Marshall, R.

AU - Meinke, R.

AU - Middleton, R. P.

AU - Minowa, H.

AU - Murphy, P. G.

AU - Naroska, B.

AU - Nye, J. M.

AU - Olsson, J.

AU - Ould-Saada, F.

AU - Ramcke, R.

AU - Rieseberg, H.

AU - Schmidt, D.

AU - von der Schmitt, H.

AU - Smolik, L.

AU - Schneekloth, U.

AU - Skard, J. A.J.

AU - Spitzer, J.

AU - Steffen, P.

AU - Stephens, K.

AU - Wagner, A.

AU - Walker, I. W.

AU - Weber, G.

AU - Zimmer, M.

AU - Zorn, G. T.

PY - 1990/9

Y1 - 1990/9

N2 - The forward-backward charge asymmetries of the b and c quarks are measured with the JADE detector at PETRA at {Mathematical expression} GeV and 44 GeV using both electrons and muons to tag the heavy quarks. At {Mathematical expression} GeV, a simultaneous fit for the two asymmetries yields the result Ab=-9.3±5.2% (state.) nd Ac=-9.6±4.0% (stat.). The systematic errors are comparable with the statistical uncertainties. Combining the measurements at both energies and alternately constraining the weak coupling of the c and b quark to their Standard Model values (ac=1, ab=-1) increases the precision of the measurement of coupling constant of the other quark. Using this procedure ab=-0.72±0.34 and ac=0.79±0.40, where the numbers are corrected for {Mathematical expression} and the errors include both statistical and systematic contributions. The mixing parameter for continuum {Mathematical expression} is determined to be χ-0.24±0.12 if both heavy quark coupling constants are constrained to their values in the Standard Model.

AB - The forward-backward charge asymmetries of the b and c quarks are measured with the JADE detector at PETRA at {Mathematical expression} GeV and 44 GeV using both electrons and muons to tag the heavy quarks. At {Mathematical expression} GeV, a simultaneous fit for the two asymmetries yields the result Ab=-9.3±5.2% (state.) nd Ac=-9.6±4.0% (stat.). The systematic errors are comparable with the statistical uncertainties. Combining the measurements at both energies and alternately constraining the weak coupling of the c and b quark to their Standard Model values (ac=1, ab=-1) increases the precision of the measurement of coupling constant of the other quark. Using this procedure ab=-0.72±0.34 and ac=0.79±0.40, where the numbers are corrected for {Mathematical expression} and the errors include both statistical and systematic contributions. The mixing parameter for continuum {Mathematical expression} is determined to be χ-0.24±0.12 if both heavy quark coupling constants are constrained to their values in the Standard Model.

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DO - 10.1007/BF01621022

M3 - Article

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JO - Zeitschrift für Physik C Particles and Fields

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A measurement of the weak axial couplings of the b- and c-quark

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