A simultaneous measurement of the QCD colour factors and the strong coupling

G. Abbiendi; C. Ainsley; P. F. Åkesson; G. Alexander; J. Allison; G. Anagnostou; K. J. Anderson; S. Arcelli; S. Asai; D. Axen; G. Azuelos; I. Bailey; H. Ball; E. Barberio; R. J. Barlow; R. J. Batley; T. Behnke; K. W. Bell; G. Bella; A. Bellerive; G. Benelli; S. Bethke; O. Biebel; I. J. Bloodworth; O. Boeriu; P. Bock; J. Böhme; D. Bonacorsi; M. Boutemeur; S. Braibant; L. Brigliadori; R. M. Brown; H. J. Burckhart; J. Cammin; P. Capiluppi; R. K. Carnegie; B. Caron; A. A. Carter; J. R. Carter; C. Y. Chang; D. G. Charlton; P. E.L. Clarke; E. Clay; I. Cohen; J. Couchman; A. Csilling; M. Cuffiani; S. Dado; G. M. Dallavalle; S. Dallison; A. De Roeck; E. A. De Wolf; P. Dervan; K. Desch; B. Dienes; M. S. Dixit; M. Donkers; J. Dubbert; E. Duchovni; G. Duckeck; I. P. Duerdoth; P. G. Estabrooks; E. Etzion; F. Fabbri; M. Fanti; L. Feld; P. Ferrari; F. Fiedler; I. Fleck; M. Ford; A. Frey; A. Fürtjes; D. I. Futyan; P. Gagnon; J. W. Gary; G. Gaycken; C. Geich-Gimbel; G. Giacomelli; P. Giacomelli; D. Glenzinski; J. Goldberg; C. Grandi; K. Graham; E. Gross; J. Grunhaus; M. Gruwé; P. O. Günther; A. Gupta; C. Hajdu; G. G. Hanson; K. Harder; A. Harel; M. Harin-Dirac; M. Hauschild; C. M. Hawkes; R. Hawkings; R. J. Hemingway; C. Hensel; G. Herten; R. D. Heuer; J. C. Hill; K. Hoffman; R. J. Homer; A. K. Honma; D. Horváth; K. R. Hossain; R. Howard; P. Hüntemeyer; P. Igo-Kemenes; K. Ishii; A. Jawahery; H. Jeremie; C. R. Jones; P. Jovanovic; T. R. Junk; N. Kanaya; J. Kanzaki; G. Karapetian; D. Karlen; V. Kartvelishvili; K. Kawagoe; T. Kawamoto; R. K. Keeler; R. G. Kellogg; B. W. Kennedy; D. H. Kim; K. Klein; A. Klier; S. Kluth; T. Kobayashi; M. Kobel; T. P. Kokott; S. Komamiya; R. V. Kowalewski; T. Krämer; T. Kress; P. Krieger; J. von Krogh; D. Krop; T. Kuhl; M. Kupper; P. Kyberd; G. D. Lafferty; H. Landsman; D. Lanske; I. Lawson; J. G. Layter; A. Leins; D. Lellouch; J. Letts; L. Levinson; R. Liebisch; J. Lillich; C. Littlewood; A. W. Lloyd; S. L. Lloyd; F. K. Loebinger; G. D. Long; M. J. Losty; J. Lu; J. Ludwig; A. Macchiolo; A. Macpherson; W. Mader; S. Marcellini; T. E. Marchant; A. J. Martin; J. P. Martin; G. Martinez; T. Mashimo; P. Mättig; W. J. McDonald; J. McKenna; T. J. McMahon; R. A. McPherson; F. Meijers; P. Mendez-Lorenzo; W. Menges; F. S. Merritt; H. Mes; A. Michelini; S. Mihara; G. Mikenberg; D. J. Miller; W. Mohr; A. Montanari; T. Mori; K. Nagai; I. Nakamura; H. A. Neal; R. Nisius; S. W. O'Neale; F. G. Oakham; F. Odorici; A. Oh; A. Okpara; M. J. Oreglia; S. Orito; C. Pahl; G. Pásztor; J. R. Pater; G. N. Patrick; J. E. Pilcher; J. Pinfold; D. E. Plane; B. Poli; J. Polok; O. Pooth; A. Quadt; K. Rabbertz; C. Rembser; P. Renkel; H. Rick; N. Rodning; J. M. Roney; S. Rosati; K. Roscoe; A. M. Rossi; Y. Rozen; K. Runge; O. Runolfsson; D. R. Rust; K. Sachs; T. Saeki; O. Sahr; E. K.G. Sarkisyan; C. Sbarra; A. D. Schaile; O. Schaile; P. Scharff-Hansen; M. Schrüder; M. Schumacher; C. Schwick; W. G. Scott; R. Seuster; T. G. Shears; B. C. Shen; C. H. Shepherd-Themistocleous; P. Sherwood; G. P. Siroli; A. Skuja; A. M. Smith; G. A. Snow; R. Sobie; S. Söldner-Rembold; S. Spagnolo; F. Spano; M. Sproston; A. Stahl; K. Stephens; D. Strom; R. Ströhmer; L. Stumpf; B. Surrow; S. D. Talbot; S. Tarem; M. Tasevsky; R. J. Taylor; R. Teuscher; J. Thomas; M. A. Thomson; E. Torrence; S. Towers; D. Toya; T. Trefzger; I. Trigger; Z. Trócsányi; E. Tsur; M. F. Turner-Watson; I. Ueda; B. Vachon; C. F. Vollmer; P. Vannerem; M. Verzocchi; H. Voss; J. Vossebeld; D. Waller; C. P. Ward; D. R. Ward; P. M. Watkins; A. T. Watson; N. K. Watson; P. S. Wells; T. Wengler; N. Wermes; G. W. Wilson; J. A. Wilson; T. R. Wyatt; S. Yamashita; V. Zacek; D. Zer-Zion

doi:10.1007/s100520100699

A simultaneous measurement of the QCD colour factors and the strong coupling

G. Abbiendi^*, C. Ainsley, P. F. Åkesson, G. Alexander, J. Allison, G. Anagnostou, K. J. Anderson, S. Arcelli, S. Asai, D. Axen, G. Azuelos, I. Bailey, H. Ball, E. Barberio, R. J. Barlow, R. J. Batley, T. Behnke, K. W. Bell, G. Bella, A. BelleriveG. Benelli, S. Bethke, O. Biebel, I. J. Bloodworth, O. Boeriu, P. Bock, J. Böhme, D. Bonacorsi, M. Boutemeur, S. Braibant, L. Brigliadori, R. M. Brown, H. J. Burckhart, J. Cammin, P. Capiluppi, R. K. Carnegie, B. Caron, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, P. E.L. Clarke, E. Clay, I. Cohen, J. Couchman, A. Csilling, M. Cuffiani, S. Dado, G. M. Dallavalle, S. Dallison, A. De Roeck, E. A. De Wolf, P. Dervan, K. Desch, B. Dienes, M. S. Dixit, M. Donkers, J. Dubbert, E. Duchovni, G. Duckeck, I. P. Duerdoth, P. G. Estabrooks, E. Etzion, F. Fabbri, M. Fanti, L. Feld, P. Ferrari, F. Fiedler, I. Fleck, M. Ford, A. Frey, A. Fürtjes, D. I. Futyan, P. Gagnon, J. W. Gary, G. Gaycken, C. Geich-Gimbel, G. Giacomelli, P. Giacomelli, D. Glenzinski, J. Goldberg, C. Grandi, K. Graham, E. Gross, J. Grunhaus, M. Gruwé, P. O. Günther, A. Gupta, C. Hajdu, G. G. Hanson, K. Harder, A. Harel, M. Harin-Dirac, M. Hauschild, C. M. Hawkes, R. Hawkings, R. J. Hemingway, C. Hensel, G. Herten, R. D. Heuer, J. C. Hill, K. Hoffman, R. J. Homer, A. K. Honma, D. Horváth, K. R. Hossain, R. Howard, P. Hüntemeyer, P. Igo-Kemenes, K. Ishii, A. Jawahery, H. Jeremie, C. R. Jones, P. Jovanovic, T. R. Junk, N. Kanaya, J. Kanzaki, G. Karapetian, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, D. H. Kim, K. Klein, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, T. P. Kokott, S. Komamiya, R. V. Kowalewski, T. Krämer, T. Kress, P. Krieger, J. von Krogh, D. Krop, T. Kuhl, M. Kupper, P. Kyberd, G. D. Lafferty, H. Landsman, D. Lanske, I. Lawson, J. G. Layter, A. Leins, D. Lellouch, J. Letts, L. Levinson, R. Liebisch, J. Lillich, C. Littlewood, A. W. Lloyd, S. L. Lloyd, F. K. Loebinger, G. D. Long, M. J. Losty, J. Lu, J. Ludwig, A. Macchiolo, A. Macpherson, W. Mader, S. Marcellini, T. E. Marchant, A. J. Martin, J. P. Martin, G. Martinez, T. Mashimo, P. Mättig, W. J. McDonald, J. McKenna, T. J. McMahon, R. A. McPherson, F. Meijers, P. Mendez-Lorenzo, W. Menges, F. S. Merritt, H. Mes, A. Michelini, S. Mihara, G. Mikenberg, D. J. Miller, W. Mohr, A. Montanari, T. Mori, K. Nagai, I. Nakamura, H. A. Neal, R. Nisius, S. W. O'Neale, F. G. Oakham, F. Odorici, A. Oh, A. Okpara, M. J. Oreglia, S. Orito, C. Pahl, G. Pásztor, J. R. Pater, G. N. Patrick, J. E. Pilcher, J. Pinfold, D. E. Plane, B. Poli, J. Polok, O. Pooth, A. Quadt, K. Rabbertz, C. Rembser, P. Renkel, H. Rick, N. Rodning, J. M. Roney, S. Rosati, K. Roscoe, A. M. Rossi, Y. Rozen, K. Runge, O. Runolfsson, D. R. Rust, K. Sachs, T. Saeki, O. Sahr, E. K.G. Sarkisyan, C. Sbarra, A. D. Schaile, O. Schaile, P. Scharff-Hansen, M. Schrüder, M. Schumacher, C. Schwick, W. G. Scott, R. Seuster, T. G. Shears, B. C. Shen, C. H. Shepherd-Themistocleous, P. Sherwood, G. P. Siroli, A. Skuja, A. M. Smith, G. A. Snow, R. Sobie, S. Söldner-Rembold, S. Spagnolo, F. Spano, M. Sproston, A. Stahl, K. Stephens, D. Strom, R. Ströhmer, L. Stumpf, B. Surrow, S. D. Talbot, S. Tarem, M. Tasevsky, R. J. Taylor, R. Teuscher, J. Thomas, M. A. Thomson, E. Torrence, S. Towers, D. Toya, T. Trefzger, I. Trigger, Z. Trócsányi, E. Tsur, M. F. Turner-Watson, I. Ueda, B. Vachon, C. F. Vollmer, P. Vannerem, M. Verzocchi, H. Voss, J. Vossebeld, D. Waller, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. S. Wells, T. Wengler, N. Wermes, G. W. Wilson, J. A. Wilson, T. R. Wyatt, S. Yamashita, V. Zacek, D. Zer-Zion

^*この研究の対応する著者

研究成果: Article › 査読

44 被引用数 (Scopus)

抄録

Using data from e⁺e^- annihilation into hadrons, taken with the OPAL detector at LEP at the Z pole between 1991 and 1995, we performed a simultaneous measurement of the colour factors of the underlying gauge group of the strong interaction, C_F and C_A, and the strong coupling, α^s. The measurement was carried out by fitting next-to-leading order perturbative predictions to measured angular correlations of 4-jet events together with multi-jet related variables. Our results, C_A = 3.02 ± 0.25(stat.) ± 0.49(syst.), C_F = 1.34 ± 0.13(stat.) ± 0.22(syst.), α_s(M_Z) = 0.120 ± 0.011(stat.) ± 0.020(syst.), provide a test of perturbative QCD in which the only assumptions are non-abelian gauge symmetry and standard hadronization models. The measurements are in agreement with SU(3) expectations for C_F and C_A and the world average of α_s(M_z).

本文言語	English
ページ（範囲）	601-615
ページ数	15
ジャーナル	European Physical Journal C
巻	20
号	4
DOI	https://doi.org/10.1007/s100520100699
出版ステータス	Published - 2001 5月
外部発表	はい

ASJC Scopus subject areas

工学（その他）
物理学および天文学（その他）

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10.1007/s100520100699

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引用スタイル

Abbiendi, G., Ainsley, C., Åkesson, P. F., Alexander, G., Allison, J., Anagnostou, G., Anderson, K. J., Arcelli, S., Asai, S., Axen, D., Azuelos, G., Bailey, I., Ball, H., Barberio, E., Barlow, R. J., Batley, R. J., Behnke, T., Bell, K. W., Bella, G., ... Zer-Zion, D. (2001). A simultaneous measurement of the QCD colour factors and the strong coupling. European Physical Journal C, 20(4), 601-615. https://doi.org/10.1007/s100520100699

Abbiendi, G, Ainsley, C, Åkesson, PF, Alexander, G, Allison, J, Anagnostou, G, Anderson, KJ, Arcelli, S, Asai, S, Axen, D, Azuelos, G, Bailey, I, Ball, H, Barberio, E, Barlow, RJ, Batley, RJ, Behnke, T, Bell, KW, Bella, G, Bellerive, A, Benelli, G, Bethke, S, Biebel, O, Bloodworth, IJ, Boeriu, O, Bock, P, Böhme, J, Bonacorsi, D, Boutemeur, M, Braibant, S, Brigliadori, L, Brown, RM, Burckhart, HJ, Cammin, J, Capiluppi, P, Carnegie, RK, Caron, B, Carter, AA, Carter, JR, Chang, CY, Charlton, DG, Clarke, PEL, Clay, E, Cohen, I, Couchman, J, Csilling, A, Cuffiani, M, Dado, S, Dallavalle, GM, Dallison, S, De Roeck, A, De Wolf, EA, Dervan, P, Desch, K, Dienes, B, Dixit, MS, Donkers, M, Dubbert, J, Duchovni, E, Duckeck, G, Duerdoth, IP, Estabrooks, PG, Etzion, E, Fabbri, F, Fanti, M, Feld, L, Ferrari, P, Fiedler, F, Fleck, I, Ford, M, Frey, A, Fürtjes, A, Futyan, DI, Gagnon, P, Gary, JW, Gaycken, G, Geich-Gimbel, C, Giacomelli, G, Giacomelli, P, Glenzinski, D, Goldberg, J, Grandi, C, Graham, K, Gross, E, Grunhaus, J, Gruwé, M, Günther, PO, Gupta, A, Hajdu, C, Hanson, GG, Harder, K, Harel, A, Harin-Dirac, M, Hauschild, M, Hawkes, CM, Hawkings, R, Hemingway, RJ, Hensel, C, Herten, G, Heuer, RD, Hill, JC, Hoffman, K, Homer, RJ, Honma, AK, Horváth, D, Hossain, KR, Howard, R, Hüntemeyer, P, Igo-Kemenes, P, Ishii, K, Jawahery, A, Jeremie, H, Jones, CR, Jovanovic, P, Junk, TR, Kanaya, N, Kanzaki, J, Karapetian, G, Karlen, D, Kartvelishvili, V, Kawagoe, K, Kawamoto, T, Keeler, RK, Kellogg, RG, Kennedy, BW, Kim, DH, Klein, K, Klier, A, Kluth, S, Kobayashi, T, Kobel, M, Kokott, TP, Komamiya, S, Kowalewski, RV, Krämer, T, Kress, T, Krieger, P, von Krogh, J, Krop, D, Kuhl, T, Kupper, M, Kyberd, P, Lafferty, GD, Landsman, H, Lanske, D, Lawson, I, Layter, JG, Leins, A, Lellouch, D, Letts, J, Levinson, L, Liebisch, R, Lillich, J, Littlewood, C, Lloyd, AW, Lloyd, SL, Loebinger, FK, Long, GD, Losty, MJ, Lu, J, Ludwig, J, Macchiolo, A, Macpherson, A, Mader, W, Marcellini, S, Marchant, TE, Martin, AJ, Martin, JP, Martinez, G, Mashimo, T, Mättig, P, McDonald, WJ, McKenna, J, McMahon, TJ, McPherson, RA, Meijers, F, Mendez-Lorenzo, P, Menges, W, Merritt, FS, Mes, H, Michelini, A, Mihara, S, Mikenberg, G, Miller, DJ, Mohr, W, Montanari, A, Mori, T, Nagai, K, Nakamura, I, Neal, HA, Nisius, R, O'Neale, SW, Oakham, FG, Odorici, F, Oh, A, Okpara, A, Oreglia, MJ, Orito, S, Pahl, C, Pásztor, G, Pater, JR, Patrick, GN, Pilcher, JE, Pinfold, J, Plane, DE, Poli, B, Polok, J, Pooth, O, Quadt, A, Rabbertz, K, Rembser, C, Renkel, P, Rick, H, Rodning, N, Roney, JM, Rosati, S, Roscoe, K, Rossi, AM, Rozen, Y, Runge, K, Runolfsson, O, Rust, DR, Sachs, K, Saeki, T, Sahr, O, Sarkisyan, EKG, Sbarra, C, Schaile, AD, Schaile, O, Scharff-Hansen, P, Schrüder, M, Schumacher, M, Schwick, C, Scott, WG, Seuster, R, Shears, TG, Shen, BC, Shepherd-Themistocleous, CH, Sherwood, P, Siroli, GP, Skuja, A, Smith, AM, Snow, GA, Sobie, R, Söldner-Rembold, S, Spagnolo, S, Spano, F, Sproston, M, Stahl, A, Stephens, K, Strom, D, Ströhmer, R, Stumpf, L, Surrow, B, Talbot, SD, Tarem, S, Tasevsky, M, Taylor, RJ, Teuscher, R, Thomas, J, Thomson, MA, Torrence, E, Towers, S, Toya, D, Trefzger, T, Trigger, I, Trócsányi, Z, Tsur, E, Turner-Watson, MF, Ueda, I, Vachon, B, Vollmer, CF, Vannerem, P, Verzocchi, M, Voss, H, Vossebeld, J, Waller, D, Ward, CP, Ward, DR, Watkins, PM, Watson, AT, Watson, NK, Wells, PS, Wengler, T, Wermes, N, Wilson, GW, Wilson, JA, Wyatt, TR, Yamashita, S, Zacek, V & Zer-Zion, D 2001, 'A simultaneous measurement of the QCD colour factors and the strong coupling', European Physical Journal C, vol. 20, no. 4, pp. 601-615. https://doi.org/10.1007/s100520100699

@article{95cac04f28604bc5bab521f45dbda6d0,

title = "A simultaneous measurement of the QCD colour factors and the strong coupling",

abstract = "Using data from e+e- annihilation into hadrons, taken with the OPAL detector at LEP at the Z pole between 1991 and 1995, we performed a simultaneous measurement of the colour factors of the underlying gauge group of the strong interaction, CF and CA, and the strong coupling, αs. The measurement was carried out by fitting next-to-leading order perturbative predictions to measured angular correlations of 4-jet events together with multi-jet related variables. Our results, CA = 3.02 ± 0.25(stat.) ± 0.49(syst.), CF = 1.34 ± 0.13(stat.) ± 0.22(syst.), αs(MZ) = 0.120 ± 0.011(stat.) ± 0.020(syst.), provide a test of perturbative QCD in which the only assumptions are non-abelian gauge symmetry and standard hadronization models. The measurements are in agreement with SU(3) expectations for CF and CA and the world average of αs(Mz).",

author = "G. Abbiendi and C. Ainsley and {\AA}kesson, {P. F.} and G. Alexander and J. Allison and G. Anagnostou and Anderson, {K. J.} and S. Arcelli and S. Asai and D. Axen and G. Azuelos and I. Bailey and H. Ball and E. Barberio and Barlow, {R. J.} and Batley, {R. J.} and T. Behnke and Bell, {K. W.} and G. Bella and A. Bellerive and G. Benelli and S. Bethke and O. Biebel and Bloodworth, {I. J.} and O. Boeriu and P. Bock and J. B{\"o}hme and D. Bonacorsi and M. Boutemeur and S. Braibant and L. Brigliadori and Brown, {R. M.} and Burckhart, {H. J.} and J. Cammin and P. Capiluppi and Carnegie, {R. K.} and B. Caron and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and Charlton, {D. G.} and Clarke, {P. E.L.} and E. Clay and I. Cohen and J. Couchman and A. Csilling and M. Cuffiani and S. Dado and Dallavalle, {G. M.} and S. Dallison and {De Roeck}, A. and {De Wolf}, {E. A.} and P. Dervan and K. Desch and B. Dienes and Dixit, {M. S.} and M. Donkers and J. Dubbert and E. Duchovni and G. Duckeck and Duerdoth, {I. P.} and Estabrooks, {P. G.} and E. Etzion and F. Fabbri and M. Fanti and L. Feld and P. Ferrari and F. Fiedler and I. Fleck and M. Ford and A. Frey and A. F{\"u}rtjes and Futyan, {D. I.} and P. Gagnon and Gary, {J. W.} and G. Gaycken and C. Geich-Gimbel and G. Giacomelli and P. Giacomelli and D. Glenzinski and J. Goldberg and C. Grandi and K. Graham and E. Gross and J. Grunhaus and M. Gruw{\'e} and G{\"u}nther, {P. O.} and A. Gupta and C. Hajdu and Hanson, {G. G.} and K. Harder and A. Harel and M. Harin-Dirac and M. Hauschild and Hawkes, {C. M.} and R. Hawkings and Hemingway, {R. J.} and C. Hensel and G. Herten and Heuer, {R. D.} and Hill, {J. C.} and K. Hoffman and Homer, {R. J.} and Honma, {A. K.} and D. Horv{\'a}th and Hossain, {K. R.} and R. Howard and P. H{\"u}ntemeyer and P. Igo-Kemenes and K. Ishii and A. Jawahery and H. Jeremie and Jones, {C. R.} and P. Jovanovic and Junk, {T. R.} and N. Kanaya and J. Kanzaki and G. Karapetian and D. Karlen and V. Kartvelishvili and K. Kawagoe and T. Kawamoto and Keeler, {R. K.} and Kellogg, {R. G.} and Kennedy, {B. W.} and Kim, {D. H.} and K. Klein and A. Klier and S. Kluth and T. Kobayashi and M. Kobel and Kokott, {T. P.} and S. Komamiya and Kowalewski, {R. V.} and T. Kr{\"a}mer and T. Kress and P. Krieger and {von Krogh}, J. and D. Krop and T. Kuhl and M. Kupper and P. Kyberd and Lafferty, {G. D.} and H. Landsman and D. Lanske and I. Lawson and Layter, {J. G.} and A. Leins and D. Lellouch and J. Letts and L. Levinson and R. Liebisch and J. Lillich and C. Littlewood and Lloyd, {A. W.} and Lloyd, {S. L.} and Loebinger, {F. K.} and Long, {G. D.} and Losty, {M. J.} and J. Lu and J. Ludwig and A. Macchiolo and A. Macpherson and W. Mader and S. Marcellini and Marchant, {T. E.} and Martin, {A. J.} and Martin, {J. P.} and G. Martinez and T. Mashimo and P. M{\"a}ttig and McDonald, {W. J.} and J. McKenna and McMahon, {T. J.} and McPherson, {R. A.} and F. Meijers and P. Mendez-Lorenzo and W. Menges and Merritt, {F. S.} and H. Mes and A. Michelini and S. Mihara and G. Mikenberg and Miller, {D. J.} and W. Mohr and A. Montanari and T. Mori and K. Nagai and I. Nakamura and Neal, {H. A.} and R. Nisius and O'Neale, {S. W.} and Oakham, {F. G.} and F. Odorici and A. Oh and A. Okpara and Oreglia, {M. J.} and S. Orito and C. Pahl and G. P{\'a}sztor and Pater, {J. R.} and Patrick, {G. N.} and Pilcher, {J. E.} and J. Pinfold and Plane, {D. E.} and B. Poli and J. Polok and O. Pooth and A. Quadt and K. Rabbertz and C. Rembser and P. Renkel and H. Rick and N. Rodning and Roney, {J. M.} and S. Rosati and K. Roscoe and Rossi, {A. M.} and Y. Rozen and K. Runge and O. Runolfsson and Rust, {D. R.} and K. Sachs and T. Saeki and O. Sahr and Sarkisyan, {E. K.G.} and C. Sbarra and Schaile, {A. D.} and O. Schaile and P. Scharff-Hansen and M. Schr{\"u}der and M. Schumacher and C. Schwick and Scott, {W. G.} and R. Seuster and Shears, {T. G.} and Shen, {B. C.} and Shepherd-Themistocleous, {C. H.} and P. Sherwood and Siroli, {G. P.} and A. Skuja and Smith, {A. M.} and Snow, {G. A.} and R. Sobie and S. S{\"o}ldner-Rembold and S. Spagnolo and F. Spano and M. Sproston and A. Stahl and K. Stephens and D. Strom and R. Str{\"o}hmer and L. Stumpf and B. Surrow and Talbot, {S. D.} and S. Tarem and M. Tasevsky and Taylor, {R. J.} and R. Teuscher and J. Thomas and Thomson, {M. A.} and E. Torrence and S. Towers and D. Toya and T. Trefzger and I. Trigger and Z. Tr{\'o}cs{\'a}nyi and E. Tsur and Turner-Watson, {M. F.} and I. Ueda and B. Vachon and Vollmer, {C. F.} and P. Vannerem and M. Verzocchi and H. Voss and J. Vossebeld and D. Waller and Ward, {C. P.} and Ward, {D. R.} and Watkins, {P. M.} and Watson, {A. T.} and Watson, {N. K.} and Wells, {P. S.} and T. Wengler and N. Wermes and Wilson, {G. W.} and Wilson, {J. A.} and Wyatt, {T. R.} and S. Yamashita and V. Zacek and D. Zer-Zion",

year = "2001",

month = may,

doi = "10.1007/s100520100699",

language = "English",

volume = "20",

pages = "601--615",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "4",

}

TY - JOUR

T1 - A simultaneous measurement of the QCD colour factors and the strong coupling

AU - Abbiendi, G.

AU - Ainsley, C.

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PY - 2001/5

Y1 - 2001/5

N2 - Using data from e+e- annihilation into hadrons, taken with the OPAL detector at LEP at the Z pole between 1991 and 1995, we performed a simultaneous measurement of the colour factors of the underlying gauge group of the strong interaction, CF and CA, and the strong coupling, αs. The measurement was carried out by fitting next-to-leading order perturbative predictions to measured angular correlations of 4-jet events together with multi-jet related variables. Our results, CA = 3.02 ± 0.25(stat.) ± 0.49(syst.), CF = 1.34 ± 0.13(stat.) ± 0.22(syst.), αs(MZ) = 0.120 ± 0.011(stat.) ± 0.020(syst.), provide a test of perturbative QCD in which the only assumptions are non-abelian gauge symmetry and standard hadronization models. The measurements are in agreement with SU(3) expectations for CF and CA and the world average of αs(Mz).

AB - Using data from e+e- annihilation into hadrons, taken with the OPAL detector at LEP at the Z pole between 1991 and 1995, we performed a simultaneous measurement of the colour factors of the underlying gauge group of the strong interaction, CF and CA, and the strong coupling, αs. The measurement was carried out by fitting next-to-leading order perturbative predictions to measured angular correlations of 4-jet events together with multi-jet related variables. Our results, CA = 3.02 ± 0.25(stat.) ± 0.49(syst.), CF = 1.34 ± 0.13(stat.) ± 0.22(syst.), αs(MZ) = 0.120 ± 0.011(stat.) ± 0.020(syst.), provide a test of perturbative QCD in which the only assumptions are non-abelian gauge symmetry and standard hadronization models. The measurements are in agreement with SU(3) expectations for CF and CA and the world average of αs(Mz).

UR - http://www.scopus.com/inward/record.url?scp=0002213381&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0002213381&partnerID=8YFLogxK

U2 - 10.1007/s100520100699

DO - 10.1007/s100520100699

M3 - Article

AN - SCOPUS:0002213381

SN - 1434-6044

VL - 20

SP - 601

EP - 615

JO - European Physical Journal C

JF - European Physical Journal C

IS - 4

ER -

A simultaneous measurement of the QCD colour factors and the strong coupling

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