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Titolo:
Precise determination of the Z resonance parameters at LEP: "Zedometry"
Autore:
Abbiendi, G; Ainsley, C; Akesson, PF; Alexander, G; Allison, J; Anagnostou, G; Anderson, KJ; Arcelli, S; Asai, S; Ashby, SF; Axen, D; Azuelos, G; Bailey, I; Ball, AH; Barberio, E; Barlow, RJ; Behnke, T; Bell, KW; Bella, G; Bellerive, A; Benelli, G; Bentvelsen, S; Beeston, C; Bethke, S; Biebel, O; Bloodworth, IJ; Boeriu, O; Bock, P; Bohme, J; Bonacorsi, D; Boutemeur, M; Braibant, S; Bright-Thomas, P; 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; Conboy, JE; Cooke, OC; Couchman, J; Coxe, RL; Csilling, A; Cuffiani, M; Dado, S; Dallavalle, GM; Dallison, S; Darling, C; 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, F; Fabbri, F; Fanti, M; Feld, L; Ferrari, P; Fiedler, F; Fleck, I; Ford, M; Foucher, M; Frey, A; Furtjes, A; Futyan, DI; Gagnon, P; Gascon, J; Gascon-Shotkin, SM; Gary, JW; Gaycken, G; Geich-Gimbel, C; Giacomelli, G; Giacomelli, P; Giacomelli, R; Glenzinski, D; Goldberg, J; Grandi, C; Graham, K; Gross, E; Grunhaus, J; Gruwe, M; Gunther, PO; Hajdu, C; Hanson, GG; Harder, K; Harel, A; Harin-Dirac, M; Hart, PA; Hauschild, M; Hawkes, CM; Hawkings, R; Hemingway, RJ; Hensel, C; Herten, G; Heuer, RD; Hildreth, MD; Hill, JC; Hillier, SJ; Hocker, A; Hoffman, K; Homer, RJ; Honma, AK; Horvath, D; Hossain, KR; Howard, R; Huntemeyer, P; Igo-Kemenes, P; Ishii, K; Jacob, FR; 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; Kirk, J; Klein, K; Klier, A; Kluth, S; Kobayashi, T; Kobel, M; Kokott, TP; Komamiya, S; Kowalewski, RV; Kress, T; Krieger, P; von Krogh, J; Krop, D; Kuhl, T; Kupper, M; Kyberd, P; Lafferty, GD; Lahmann, R; Lai, WP; Landsman, H; Lanske, D; Lauber, J; Lawson, I; Layter, JG; Lec, AM; 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; Mannelli, M; Marcellini, S; Marchant, TE; Martin, AJ; Martin, JP; Martinez, G; Mashimo, T; Mattig, P; McDonald, WJ; McKenna, J; McMahon, TJ; McPherson, RA; Meijers, F; Mendez-Lorenzo, P; Menges, W; Menke, S; Merritt, FS; Mes, H; Michelini, A; Mihara, S; Mikenberg, G; Miller, DJ; Mohr, W; Montanari, A; Mori, T; Muller, U; Nagai, K; Nakamura, I; Neal, HA; Nisius, R; ONeale, SW; Oakham, FG; Odorici, F; Oh, A; Okpara, A; Oldershaw, NJ; Oreglia, MJ; Orito, S; Palmonari, F; Pasztor, G; Pater, JR; Patrick, GN; Pfeifenschneider, P; Pilcher, JE; Pinfold, J; Plane, DE; Poli, B; Polok, J; Pooth, O; Przybycien, M; Quadt, A; Quast, G; Rabbertz, K; Raith, B; 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; Schmitt, B; Schroder, M; Schumacher, M; Schwick, C; Scott, WG; Seuster, R; Shears, TG; Shen, BC; Shepherd-Themistocleous, CH; Sherwood, P; Siroli, GP; Skuja, A; Smith, AM; Smith, TJ; Snow, GA; Sobie, R; Soldner-Rembold, S; Spagnolo, S; Springer, RW; Sproston, M; Stahl, A; Stephens, K; Stoll, K; Strom, D; Strohmer, R; Stumpf, L; Surrow, B; Talbot, SD; Tarem, S; Taylor, RJ; Teuscher, R; Tecchio, M; Thomas, J; Thomson, MA; Towers, S; Toya, D; Trefzger, T; Trigger, I; Troscanyi, Z; Tsukamoto, T; Tsur, E; Turner-Watson, MF; Ueda, I; Vachon, B; Vannerem, P; Verzocchi, M; Vokurka, EH; Voss, H; Vossebeld, J; Wagner, A; Wagner, DL; Waller, D; Ward, CP; Ward, DR; Watkins, PM; Watson, AT; Watson, NK; Wells, PS; Wengler, T; Wermes, N; Wetterling, D; White, JS; Wilson, GW; Wilson, JA; Wyatt, TR; Yamashita, S; Zacek, V; Zer-Zion, D;
Indirizzi:
Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England Univ Birmingham Birmingham W Midlands England B15 2TT W Midlands, England Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy Univ Bologna Bologna Italy I-40126 artimento Fis, I-40126 Bologna, Italy Ist Nazl Fis Nucl, I-40126 Bologna, Italy Ist Nazl Fis Nucl Bologna Italy I-40126 Fis Nucl, I-40126 Bologna, Italy Univ Bonn, Inst Phys, D-53115 Bonn, Germany Univ Bonn Bonn Germany D-53115 iv Bonn, Inst Phys, D-53115 Bonn, Germany Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA Univ Calif Riverside Riverside CA USA 92521 Phys, Riverside, CA 92521 USA Cavendish Lab, Cambridge CB3 0HE, England Cavendish Lab Cambridge England CB3 0HE Lab, Cambridge CB3 0HE, England Carleton Univ, Dept Phys, Ottawa Carleton Inst Phys, Ottawa, ON K1S 5B6, Canada Carleton Univ Ottawa ON Canada K1S 5B6 t Phys, Ottawa, ON K1S 5B6, Canada Carleton Univ, Ctr Res Particle Phys, Ottawa, ON K1S 5B6, Canada Carleton Univ Ottawa ON Canada K1S 5B6 e Phys, Ottawa, ON K1S 5B6, Canada CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23 Org Nucl Res, CH-1211 Geneva 23, Switzerland Univ Chicago, Eurico Fermi Inst, Chicago, IL 60637 USA Univ Chicago Chicago IL USA 60637 urico Fermi Inst, Chicago, IL 60637 USA Univ Chicago, Dept Phys, Chicago, IL 60637 USA Univ Chicago Chicago IL USA 60637 icago, Dept Phys, Chicago, IL 60637 USA Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany Univ Freiburg Freiburg Germany D-79104 k Phys, D-79104 Freiburg, Germany Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany Univ Heidelberg Heidelberg Germany D-69120 , D-69120 Heidelberg, Germany Indiana Univ, Dept Phys, Bloomington, IN 47405 USA Indiana Univ Bloomington IN USA 47405 ept Phys, Bloomington, IN 47405 USA Univ London Queen Mary & Westfield Coll, London E1 4NS, England Univ London Queen Mary & Westfield Coll London England E1 4NS S, England Tech Hsch Aachen, Inst Phys 3, D-52056 Aachen, Germany Tech Hsch Aachen Aachen Germany D-52056 Phys 3, D-52056 Aachen, Germany Univ Coll London, London WC1E 6BT, England Univ Coll London London England WC1E 6BT ondon, London WC1E 6BT, England Univ Manchester, Schuster Lab, Dept Phys, Manchester M13 9PL, Lancs, England Univ Manchester Manchester Lancs England M13 9PL M13 9PL, Lancs, England Univ Maryland, Dept Phys, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 Dept Phys, College Pk, MD 20742 USA Univ Montreal, Nucl Phys Lab, Montreal, PQ H3C 3J7, Canada Univ Montreal Montreal PQ Canada H3C 3J7 ab, Montreal, PQ H3C 3J7, Canada Univ Oregon, Dept Phys, Eugene, OR 97403 USA Univ Oregon Eugene OR USA 97403 v Oregon, Dept Phys, Eugene, OR 97403 USA Rutherford Appleton Lab, CLRC, Didcot OX11 0QX, Oxon, England Rutherford Appleton Lab Didcot Oxon England OX11 0QX 1 0QX, Oxon, England Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel Technion Israel Inst Technol Haifa Israel IL-32000 L-32000 Haifa, Israel Tel Aviv Univ, Dept Phys & Astron, IL-69978 Tel Aviv, Israel Tel Aviv Univ Tel Aviv Israel IL-69978 Astron, IL-69978 Tel Aviv, Israel Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo 1130033, Japan Univ Tokyo Tokyo Japan 1130033 ntary Particle Phys, Tokyo 1130033, Japan Univ Tokyo, Dept Phys, Tokyo 1130033, Japan Univ Tokyo Tokyo Japan 1130033 iv Tokyo, Dept Phys, Tokyo 1130033, Japan Kobe Univ, Kobe, Hyogo 6578501, Japan Kobe Univ Kobe Hyogo Japan 6578501Kobe Univ, Kobe, Hyogo 6578501, Japan Weizmann Inst Sci, Particle Phys Dept, IL-76100 Rehovot, Israel Weizmann Inst Sci Rehovot Israel IL-76100 Dept, IL-76100 Rehovot, Israel Univ Hamburg, DESY, Inst Expt Phys 2, D-22607 Hamburg, Germany Univ Hamburg Hamburg Germany D-22607 pt Phys 2, D-22607 Hamburg, Germany Univ Victoria, Dept Phys, Victoria, BC V8W 3P6, Canada Univ Victoria Victoria BC Canada V8W 3P6 ys, Victoria, BC V8W 3P6, Canada Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada Univ British Columbia Vancouver BC Canada V6T 1Z1 ver, BC V6T 1Z1, Canada Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada Univ Alberta Edmonton AB Canada T6G 2J1 hys, Edmonton, AB T6G 2J1, Canada Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary Res Inst Particle & Nucl Phys Budapest Hungary H-1525 Budapest, Hungary Inst Nucl Res, H-4001 Debrecen, Hungary Inst Nucl Res Debrecen Hungary H-4001 Nucl Res, H-4001 Debrecen, Hungary Univ Munich, Sekt Phys, D-85748 Garching, Germany Univ Munich Garching Germany D-85748 ekt Phys, D-85748 Garching, Germany Max Planck Inst Phys, D-80805 Munich, Germany Max Planck Inst Phys Munich Germany D-80805 hys, D-80805 Munich, Germany Yale Univ, Dept Phys, New Haven, CT 06520 USA Yale Univ New Haven CT USA 06520 Univ, Dept Phys, New Haven, CT 06520 USA Duke Univ, Dept Phys, Durham, NC 27708 USA Duke Univ Durham NC USA 27708Duke Univ, Dept Phys, Durham, NC 27708 USA TRIUMF, Vancouver, BC V6T 2A3, Canada TRIUMF Vancouver BC Canada V6T 2A3TRIUMF, Vancouver, BC V6T 2A3, Canada Inst Nucl Res, H-4001 Debrecen, Hungary Inst Nucl Res Debrecen Hungary H-4001 Nucl Res, H-4001 Debrecen, Hungary Stanislaw Staszic Univ Min & Met, PL-30059 Krakow, Poland Stanislaw Staszic Univ Min & Met Krakow Poland PL-30059 9 Krakow, Poland Lajos Kossuth Univ, Dept Expt Phys, Debrecen, Hungary Lajos Kossuth Univ Debrecen Hungary , Dept Expt Phys, Debrecen, Hungary MPI Munchen, Munich, Germany MPI Munchen Munich GermanyMPI Munchen, Munich, Germany Res Inst Particle & Nucl Phys, Budapest, Hungary Res Inst Particle & Nucl Phys Budapest Hungary Phys, Budapest, Hungary Univ Calif Riverside, High Energy Phys Grp, Riverside, CA 92521 USA Univ Calif Riverside Riverside CA USA 92521 Grp, Riverside, CA 92521 USA CERN, Div EP, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23CERN, Div EP, CH-1211 Geneva 23, Switzerland Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel Tel Aviv UnivTel Aviv Israel IL-69978 Astron, IL-69978 Tel Aviv, Israel
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL C
fascicolo: 4, volume: 19, anno: 2001,
pagine: 587 - 651
SICI:
1434-6044(200103)19:4<587:PDOTZR>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
FORWARD-BACKWARD ASYMMETRIES; ANGLE BHABHA SCATTERING; 2-PHOTON PRODUCTION PROCESSES; SILICON-TUNGSTEN CALORIMETER; LIGHT-PAIR CORRECTIONS; CARLO PROGRAM BHLUMI; OPAL JET CHAMBER; Z LINE-SHAPE; MONTE-CARLO; Z-BOSON;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
119
Recensione:
Indirizzi per estratti:
Indirizzo: Abbiendi, G Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England Univ Birmingham Birmingham W Midlands England B15 2TT England
Citazione:
G. Abbiendi et al., "Precise determination of the Z resonance parameters at LEP: "Zedometry"", EUR PHY J C, 19(4), 2001, pp. 587-651

Abstract

This final analysis of hadronic and leptonic cross-sections and of leptonic forward-backward asymmetries in e(+)e(-) collisions With the OPAL detector makes use of tile full LEP 1 data sample comprising 161pb(-1) of integrated luminosity and 4.5 x 10(6) selected Z decays. An interpretation of the data in terms of contributions from pure Z exchange and from gamma /Z interference allows the parameters of tile Z resonance to be determined in a model-independent way. Our results are in good agreement with lepton universality anti consistent with the vector and axial-vector couplings predicted in the Standard Model. A fit to the complete dataset yields the fundamental Z resonance parameters: m(z) = (91.1852 +/- 0.0030) GeV. Gamma (Z) = 12.4948 /- 0.0041) GeV. sigma (0)(h) = (41.501 +/- 0.055) nb. R-l = 20.823 +/- 0.044, and A(FB)(0,l) = 0.0145 +/- 0.0017. Transforming these parameters givesa measurement of the ratio between the decay width into invisible particles and the width to a single species of charged lepton. Gamma (inv)/Gamma (ll) = 5.942 +/- 0.027. Attributing the entire invisible width to neutrino, decays and assuming tile Standard Model couplings for neutrinos. this translates into a measurement of the effective number of light neutrino species. N-nu = 2.984 +/- 0.013. Interpreting the data within the context of the Standard Model allows the mass of the top quark, m(t) = (162(-16)(+29)) GeV, to be determined through its influence oil radiative corrections. Alternatively, utilising the direct external measurement of m(t) as an additional constraint leads to a measurement of the strong coupling constant and the massof the Higgs boson: alpha (s)(m(Z)) = 0.127 +/- 0.005 and m(H) = (390(-280)(+750)) GeV.

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Documento generato il 22/01/20 alle ore 21:42:28