Abrams, GS; Adolphsen, CE; Averill, D; Ballam, J; Barish, BC; Barklow, T; Barnett, BA; Bartelt, J; Bethke, S; Blockus, D; Bonvicini, G; Boyarski, A; Brabson, B; Breakstone, A; Bulos, F; Burchat, PR; Burke, DL; Cence, RJ; Chapman, J; Chmeissani, M; Cords, D; Coupal, DP; Dauncey, P; DeStaebler, HC; Dorfan, DE; Dorfan, JM; Drewer, DC; Elia, R; Feldman, GJ; Fernandes, D; Field, RC; Ford, WT; Fordham, C; Frey, R; Fujino, D; Gan, KK; Gero, E; Gidal, G; Glanzman, T; Goldhaber, G; Cadenas, JJ Gomez; Gratta, G; Grindhammer, G; Grosse-Wiesmann, P; Hanson, G; Harr, R; Harral, B; Harris, FA; Hawkes, CM; Hayes, K; Hearty, C; Heusch, CA; Hildreth, MD; Himel, T; Hinshaw, DA; Hong, SJ; Hutchinson, D; Hylen, J; Innes, WR; Jacobsen, RG; Jaros, JA; Jung, CK; Kadyk, JA; Kent, J; King, M; Klein, SR; Koetke, DS; Komamiya, S; Koska, W; Kowalski, LA; Kozanecki, W; Kral, JF; Kuhlen, M; Labarga, L; Lankford, AJ; Larsen, RR; Le Diberder, F; Levi, ME; Litke, AM; Lou, XC; Lüth, V; McKenna, JA; Matthews, JAJ; Mattison, T; Milliken, BD

doi:10.1103/physrevlett.63.2780

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Measurement of Z decays into lepton pairs

1989

Abrams, GS;
Adolphsen, CE;
Averill, D;
Ballam, J;
Barish, BC;
Barklow, T;
Barnett, BA;
Bartelt, J;
Bethke, S;
Blockus, D;
Bonvicini, G;
Boyarski, A;
Brabson, B;
Breakstone, A;
Bulos, F;
Burchat, PR;
Burke, DL;
Cence, RJ;
Chapman, J;
Chmeissani, M;
Cords, D;
Coupal, DP;
Dauncey, P;
DeStaebler, HC;
Dorfan, DE;
Dorfan, JM;
Drewer, DC;
Elia, R;
Feldman, GJ;
Fernandes, D;
Field, RC;
Ford, WT;
Fordham, C;
Frey, R;
Fujino, D;
Gan, KK;
Gero, E;
Gidal, G;
Glanzman, T;
Goldhaber, G;
Cadenas, JJ Gomez;
Gratta, G;
Grindhammer, G;
Grosse-Wiesmann, P;
Hanson, G;
Harr, R;
Harral, B;
Harris, FA;
Hawkes, CM;
Hayes, K;
Hearty, C;
Heusch, CA;
Hildreth, MD;
Himel, T;
Hinshaw, DA;
Hong, SJ;
Hutchinson, D;
Hylen, J;
Innes, WR;
Jacobsen, RG;
Jaros, JA;
Jung, CK;
Kadyk, JA;
Kent, J;
King, M;
Klein, SR;
Koetke, DS;
Komamiya, S;
Koska, W;
Kowalski, LA;
Kozanecki, W;
Kral, JF;
Kuhlen, M;
Labarga, L;
Lankford, AJ;
Larsen, RR;
Le Diberder, F;
Levi, ME;
Litke, AM;
Lou, XC;
Lüth, V;
McKenna, JA;
Matthews, JAJ;
Mattison, T;
Milliken, BD;
Moffeit, KC;
Munger, CT;
Murray, WN;
Nash, J;
Ogren, H;
O’Shaughnessy, KF;
Parker, SI;
Peck, C;
Perl, ML;
Perrier, F;
Petradza, M;
Pitthan, R;
Porter, FC;
Rankin, P;
Riles, K;
Rouse, FR;
Rust, DR;
Sadrozinski, HFW;
Schaad, MW;
Schumm, BA;
Seiden, A;
Smith, JG;
Snyder, A;
Soderstrom, E;
Stoker, DP;
Stroynowski, R;
Swartz, M;
Thun, R;
Trilling, GH;
Van Kooten, R;
Voruganti, P;
Wagner, SR;
Watson, S;
Weber, P;
Weigend, A;
Weinstein, AJ;
Weir, AJ;
Wicklund, E;
Woods, M;
Wu, DY;
Yurko, M;
Zaccardelli, C;
von Zanthier, C
et al.

Published Web Location

https://doi.org/10.1103/physrevlett.63.2780

Creative Commons 'BY' version 4.0 license

Abstract

We present measurements by the Mark II experiment of the ratios of the leptonic partial widths of the Z boson to the hadronic partial width. The results are ee/had=0.037-0.012+0.016, &=0.053-0.0150.020, and /had=0.066-0.017+0.021, in good agreement with the standard-model prediction of 0.048. From the average leptonic width result, ll/had=0.053-0.009+0.010, we derive had=1.56-0.24+0.28 GeV. We find for the vector coupling constants of the tau and muon v2=0.310.31-0.30+0.43 and v2=0.050.30-0.23+0.34. © 1989 The American Physical Society.

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Measurement of Z decays into lepton pairs

Published Web Location