Measurement of the asymmetry of b quark production in e+e- annihilation at Vs= 35 GeV

W. Braunschweig; R. Gerhards; F. J. Kirschfink; H. U. Martyn; H. M. Fischer; H. Hartmann; J. Hartmann; E. Hilger; A. Jocksch; R. Wedemeyer; B. Foster; A. J. Martin; E. Bernardi; J. Chwastowski; A. Eskreys; K. Genser; H. Hultschig; P. Joos; H. Kowalski; A. Ladage; B. Löhr; D. Lüke; P. Mättig; D. Notz; J. M. Pawlak; K. U. Pösnecker; E. Ros; D. Trines; R. Walczak; G. Wolf; H. Kolanoski; J. Krüger; E. Lohrmann; G. Poelz; W. Zeuner; D. Binnie; J. Hassard; J. Shulman; D. Su; I. Tomalin; A. Watson; F. Barreiro; G. Cases; L. Hervas; J. del Peso; M. G. Bowler; P. N. Burrows; R. J. Cashmore; M. E. Veitch; J. C. Hart; D. H. Saxon; S. Brandt; M. Holder; Y. Eisenberg; U. Karshon; A. Montag; D. Revel; E. Ronat; N. Wainer; A. Caldwell; D. Muller; S. Ritz; D. Strom; M. Takashima; Sau Lan Wu; G. Zobernig

doi:10.1007/BF01572023

Measurement of the asymmetry of b quark production in e⁺e^- annihilation at Vs= 35 GeV

W. Braunschweig^*, R. Gerhards, F. J. Kirschfink, H. U. Martyn, H. M. Fischer, H. Hartmann, J. Hartmann, E. Hilger, A. Jocksch, R. Wedemeyer, B. Foster, A. J. Martin, E. Bernardi, J. Chwastowski, A. Eskreys, K. Genser, H. Hultschig, P. Joos, H. Kowalski, A. LadageB. Löhr, D. Lüke, P. Mättig, D. Notz, J. M. Pawlak, K. U. Pösnecker, E. Ros, D. Trines, R. Walczak, G. Wolf, H. Kolanoski, J. Krüger, E. Lohrmann, G. Poelz, W. Zeuner, D. Binnie, J. Hassard, J. Shulman, D. Su, I. Tomalin, A. Watson, F. Barreiro, G. Cases, L. Hervas, J. del Peso, M. G. Bowler, P. N. Burrows, R. J. Cashmore, M. E. Veitch, J. C. Hart, D. H. Saxon, S. Brandt, M. Holder, Y. Eisenberg, U. Karshon, A. Montag, D. Revel, E. Ronat, N. Wainer, A. Caldwell, D. Muller, S. Ritz, D. Strom, M. Takashima, Sau Lan Wu, G. Zobernig

^*Corresponding author for this work

Department of Particle Physics and Astrophysics

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

15 Citations (Scopus)

Abstract

The forward-backward asymmetry in the reaction e⁺e^-→bb has been determined at centre of mass energies near 35 GeV using the TASSO detector. We report results from three different methods. The combined result of the measurements is {Mathematical expression} ignoring {Mathematical expression} mixing. Taking mixing into account leads to a corrected asymmetry of {Mathematical expression}. The axial vector coupling constant of the b quark as calculated from the corrected asymmetry is a_b=-1.2±0.5 to be compared with the value a_b^SM=-1 from the standard model.

Original language	English
Pages (from-to)	433-444
Number of pages	12
Journal	European Physical Journal C
Volume	48
Issue number	3
DOIs	https://doi.org/10.1007/BF01572023
Publication status	Published - Sept 1990

Funding

We gratefully acknowledge the efforts of the PETRA machine group for high luminosity running, and the DESY directorate for their support. Those of us from abroad wish to thank the DESY directorate for the hospitality extended to us while working at DESY. Supported by Bundesministerium fur Forschung und Technologie b, Supported by UK Science and Engineering Research Council c, Supported by CAICYT d, Supported by the Minerva Gesellschaft fur Forschung GmbH e, Supported by US Dept. of Energy, contract DE-AC02- 76ER000881 and by US Nat. Sci. Foundation Grant number INT8313994 for travel f, Partially supported by grant CPBP 01.06 g, Supported by DAAD

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1007/BF01572023

Cite this

Braunschweig, W., Gerhards, R., Kirschfink, F. J., Martyn, H. U., Fischer, H. M., Hartmann, H., Hartmann, J., Hilger, E., Jocksch, A., Wedemeyer, R., Foster, B., Martin, A. J., Bernardi, E., Chwastowski, J., Eskreys, A., Genser, K., Hultschig, H., Joos, P., Kowalski, H., ... Zobernig, G. (1990). Measurement of the asymmetry of b quark production in e⁺e^- annihilation at Vs= 35 GeV. European Physical Journal C, 48(3), 433-444. https://doi.org/10.1007/BF01572023

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title = "Measurement of the asymmetry of b quark production in e+e- annihilation at Vs= 35 GeV",

abstract = "The forward-backward asymmetry in the reaction e+e-→bb has been determined at centre of mass energies near 35 GeV using the TASSO detector. We report results from three different methods. The combined result of the measurements is {Mathematical expression} ignoring {Mathematical expression} mixing. Taking mixing into account leads to a corrected asymmetry of {Mathematical expression}. The axial vector coupling constant of the b quark as calculated from the corrected asymmetry is ab=-1.2±0.5 to be compared with the value abSM=-1 from the standard model.",

author = "W. Braunschweig and R. Gerhards and Kirschfink, {F. J.} and Martyn, {H. U.} and Fischer, {H. M.} and H. Hartmann and J. Hartmann and E. Hilger and A. Jocksch and R. Wedemeyer and B. Foster and Martin, {A. J.} and E. Bernardi and J. Chwastowski and A. Eskreys and K. Genser and H. Hultschig and P. Joos and H. Kowalski and A. Ladage and B. L{\"o}hr and D. L{\"u}ke and P. M{\"a}ttig and D. Notz and Pawlak, {J. M.} and P{\"o}snecker, {K. U.} and E. Ros and D. Trines and R. Walczak and G. Wolf and H. Kolanoski and J. Kr{\"u}ger and E. Lohrmann and G. Poelz and W. Zeuner and D. Binnie and J. Hassard and J. Shulman and D. Su and I. Tomalin and A. Watson and F. Barreiro and G. Cases and L. Hervas and {del Peso}, J. and Bowler, {M. G.} and Burrows, {P. N.} and Cashmore, {R. J.} and Veitch, {M. E.} and Hart, {J. C.} and Saxon, {D. H.} and S. Brandt and M. Holder and Y. Eisenberg and U. Karshon and A. Montag and D. Revel and E. Ronat and N. Wainer and A. Caldwell and D. Muller and S. Ritz and D. Strom and M. Takashima and Wu, {Sau Lan} and G. Zobernig",

year = "1990",

month = sep,

doi = "10.1007/BF01572023",

language = "English",

volume = "48",

pages = "433--444",

journal = "European Physical Journal C",

issn = "0170-9739",

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Braunschweig, W, Gerhards, R, Kirschfink, FJ, Martyn, HU, Fischer, HM, Hartmann, H, Hartmann, J, Hilger, E, Jocksch, A, Wedemeyer, R, Foster, B, Martin, AJ, Bernardi, E, Chwastowski, J, Eskreys, A, Genser, K, Hultschig, H, Joos, P, Kowalski, H, Ladage, A, Löhr, B, Lüke, D, Mättig, P, Notz, D, Pawlak, JM, Pösnecker, KU, Ros, E, Trines, D, Walczak, R, Wolf, G, Kolanoski, H, Krüger, J, Lohrmann, E, Poelz, G, Zeuner, W, Binnie, D, Hassard, J, Shulman, J, Su, D, Tomalin, I, Watson, A, Barreiro, F, Cases, G, Hervas, L, del Peso, J, Bowler, MG, Burrows, PN, Cashmore, RJ, Veitch, ME, Hart, JC, Saxon, DH, Brandt, S, Holder, M, Eisenberg, Y, Karshon, U, Montag, A, Revel, D, Ronat, E, Wainer, N, Caldwell, A, Muller, D, Ritz, S, Strom, D, Takashima, M, Wu, SL & Zobernig, G 1990, 'Measurement of the asymmetry of b quark production in e⁺e^- annihilation at Vs= 35 GeV', European Physical Journal C, vol. 48, no. 3, pp. 433-444. https://doi.org/10.1007/BF01572023

TY - JOUR

T1 - Measurement of the asymmetry of b quark production in e+e- annihilation at Vs= 35 GeV

AU - Braunschweig, W.

AU - Gerhards, R.

AU - Kirschfink, F. J.

AU - Martyn, H. U.

AU - Fischer, H. M.

AU - Hartmann, H.

AU - Hartmann, J.

AU - Hilger, E.

AU - Jocksch, A.

AU - Wedemeyer, R.

AU - Foster, B.

AU - Martin, A. J.

AU - Bernardi, E.

AU - Chwastowski, J.

AU - Eskreys, A.

AU - Genser, K.

AU - Hultschig, H.

AU - Joos, P.

AU - Kowalski, H.

AU - Ladage, A.

AU - Löhr, B.

AU - Lüke, D.

AU - Mättig, P.

AU - Notz, D.

AU - Pawlak, J. M.

AU - Pösnecker, K. U.

AU - Ros, E.

AU - Trines, D.

AU - Walczak, R.

AU - Wolf, G.

AU - Kolanoski, H.

AU - Krüger, J.

AU - Lohrmann, E.

AU - Poelz, G.

AU - Zeuner, W.

AU - Binnie, D.

AU - Hassard, J.

AU - Shulman, J.

AU - Su, D.

AU - Tomalin, I.

AU - Watson, A.

AU - Barreiro, F.

AU - Cases, G.

AU - Hervas, L.

AU - del Peso, J.

AU - Bowler, M. G.

AU - Burrows, P. N.

AU - Cashmore, R. J.

AU - Veitch, M. E.

AU - Hart, J. C.

AU - Saxon, D. H.

AU - Brandt, S.

AU - Holder, M.

AU - Eisenberg, Y.

AU - Karshon, U.

AU - Montag, A.

AU - Revel, D.

AU - Ronat, E.

AU - Wainer, N.

AU - Caldwell, A.

AU - Muller, D.

AU - Ritz, S.

AU - Strom, D.

AU - Takashima, M.

AU - Wu, Sau Lan

AU - Zobernig, G.

PY - 1990/9

Y1 - 1990/9

N2 - The forward-backward asymmetry in the reaction e+e-→bb has been determined at centre of mass energies near 35 GeV using the TASSO detector. We report results from three different methods. The combined result of the measurements is {Mathematical expression} ignoring {Mathematical expression} mixing. Taking mixing into account leads to a corrected asymmetry of {Mathematical expression}. The axial vector coupling constant of the b quark as calculated from the corrected asymmetry is ab=-1.2±0.5 to be compared with the value abSM=-1 from the standard model.

AB - The forward-backward asymmetry in the reaction e+e-→bb has been determined at centre of mass energies near 35 GeV using the TASSO detector. We report results from three different methods. The combined result of the measurements is {Mathematical expression} ignoring {Mathematical expression} mixing. Taking mixing into account leads to a corrected asymmetry of {Mathematical expression}. The axial vector coupling constant of the b quark as calculated from the corrected asymmetry is ab=-1.2±0.5 to be compared with the value abSM=-1 from the standard model.

UR - http://www.scopus.com/inward/record.url?scp=0008141812&partnerID=8YFLogxK

U2 - 10.1007/BF01572023

DO - 10.1007/BF01572023

M3 - Article

AN - SCOPUS:0008141812

SN - 0170-9739

VL - 48

SP - 433

EP - 444

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

ER -