A determination of electroweak parameters from Z0 decays into charged leptons
Creators
- Adeva, B.
- Adriani, O.
- Aguilar-Benitez, M.
- Akbari, H.
- Alcaraz, J.
- Aloisio, A.
- Alverson, G.
- Alviggi, M.G.
- An, Q.
- Anderhub, H.
- Anderson, A.L.
- Andreev, V.P.
- Angelov, T.
- Antonov, L.
- Antreasyan, D.
- Arce, P.
- Arefiev, A.
- Azemoon, T.
- Aziz, T.
- Baba, P.V.K.S.
- Bagnaia, P.
- Bakken, J.A.
- Baksay, L.
- Ball, R.C.
- Banerjee, S.
- Bao, J.
- Barone, L.
- Bay, A.
- Becker, U.
- Behrens, J.
- Beingessner, S.
- Bencze, G.L.
- Berdugo, J.
- Berges, P.
- Bertucci, B.
- Betev, B.L.
- Biland, A.
- Bizzarri, R.
- Blaising, J.J.
- Bloemeke, P.
- Blumenfeld, B.
- Bobbink, G.J.
- Bocciolini, M.
- Boehlen, W.
- Boehm, A.
- Boehringer, T.
- Borgia, B.
- Borilkov, D.
- Bourquin, M.
- Boutigny, D.
- Branson, J.G.
- Brock, I.C.
- Bryant, F.
- Buisson, C.
- Bujak, A.
- Burger, J.D.
- Burq, J.P.
- Busenitz, J.
- Cai, X.D.
- Camps, C.
- Capell, M.
- Carbonara, F.
- Carmianti, F.
- Cartacci, A.M.
- Cerrada, M.
- Cesaroni, F.
- Chang, Y.H.
- Chaturvedi, U.K.
- Chemarin, M.
- Chen, A.
- Chen, C.
- Chen, G.M.
- Chen, H.F.
- Chen, H.S.
- Chen, M.
- Chen, M.C.
- Chen, M.L.
- Chiefari, G.
- Chien, C.Y.
- Civinini, C.
- Clare, I.
- Clare, R.
- Coignet, G.
- Colino, N.
- Commichau, V.
- Conforto, G.
- Contin, A.
- Crijns, F.
- Cui, X.Y.
- Dai, T.S.
- D'Alessandro, R.
- De Asmudis, R.
- Degre, A.
- Deiters, K.
- Denes, E.
- Denes, P.
- De Notaristefani, F.
- Dhina, M.
- DiBitonto, D.
- Diemoz, M.
- Diez-Hedo, F.
- Dimitrov, H.R.
- Dionisi, C.
- Dittus, F.
- Dolin, R.
- Drago, E.
- Driever, T.
- Duchesneau, D.
- Duinker, P.
- Duran, I.
- El Mamouni, H.
- Engler, A.
- Eppling, F.J.
- Erne, F.C.
- Extermann, P.
- Fabretti, R.
- Faber, G.
- Falciano, S.
- Fan, Q.
- Fan, S.J.
- Fabre, M.
- Fay, J.
- Fehlmann, J.
- Fenker, H.
- Ferguson, T.
- Fernandez, G.
- Ferroni, F.
- Fesefeldt, H.
- Field, J.
- Finocchiaro, G.
- Fisher, P.H.
- Forconi, G.
- Foreman, T.
- Freudenreich, K.
- Friebel, W.
- Fukushima, M.
- Gailloud, M.
- Galaktionov, Yu.
- Gallo, E.
- Ganguli, S.N.
- Garcia-Abia, P.
- Gau, S.S.
- Gentile, S.
- Glaubman, M.
- Goldfarb, S.
- Gong, Z.F.
- Gonzalez, E.
- Gordeev, A.
- Goettlicher, P.
- Goujon, D.
- Gratta, G.
- Grinnell, C.
- Gruenewald, M.
- Guanziroli, M.
- Gurtu, A.
- Gustafson, H.R.
- Gutay, L.J.
- Haan, H.
- Hancke, S.
- Hangarter, K.
- Harris, M.
- Hasan, A.
- He, C.F.
- Hebbeker, T.
- Herbert, M.
- Herten, G.
- Herten, U.
- Herve, A.
- Hilgers, K.
- Hofer, H.
- Hoorani, H.
- Hsu, L.S.
- Hu, G.
- Hu, G.Q.
- Ille, B.
- Ilyas, M.M.
- Innocente, V.
- Isiksal, E.
- Jagel, E.
- Jin, B.N.
- Jones, L.W.
- Khan, R.A.
- Kamyshkov, Yu.
- Karyotakis, Y.
- Kaur, M.
- Khokhar, S.
- Khoze, V.
- Kirkby, D.
- Kittel, W.
- Klimentov, A.
- Koenig, A.C.
- Kornadt, O.
- Koutsenko, V.
- Kraemer, R.W.
- Kramer, T.
- Kratsev, V.R.
- Krenz, W.
- Krizmanic, J.
- Kuhn, A.
- Kumar, K.S.
- Kumar, V.
- Kunin, A.
- Laak, A. van
- Lalieu, V.
- Landi, G.
- Lanius, K.
- Lange, W.
- Lanske, D.
- Lanzano, S.
- Lebrun, P.
- L3 Collaboration
Description
We have measured the partial widths for the three reactions e+e-→Z0→e+e-, μ+μ-, τ+τ-. The results are Γee=84.3±1.3 MeV, √ΓeeΓμμ=83.3±1.3 MeV, and √ΓeeΓττ=83.9±1.4 MeV, where the errors are statistical. The systematic errors are estimated to be 1.0 MeV, 0.9 MeV, and 1.4 MeV, respectively. We perform a simultaneous fit to the cross sections for the e+e-→e+e-, μ+μ-, and τ+τ- data, the differential cross section as a function of polar angle for the electron data, and the forward-backward asymmetry for the muon data. We obtain the leptonic partial with Γll=84.0±0.9(stat). MeV. The systematic error is estimated to be 0.8 MeV. Also, we obtain the axial-vector and vector weak coupling constants of charged leptons, gA=-0.500±0.003 and gV=-0.064-0.013+0.017. (orig.)
Additional details
Publishing Information
- Journal Title
- Physics Letters, (Section) B
- Journal Volume
- 250
- Journal Issue
- 1/2
- Series
- Phys. Lett., B.
- Journal Page Range
- 183-192
- ISSN
- 0370-2693
- CODEN
- PYLBA
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 22021251
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANGULAR CORRELATION; ANGULAR DISTRIBUTION; ANNIHILATION; ASYMMETRY; AXIAL-VECTOR CURRENTS; BHABHA SCATTERING; COUPLING CONSTANTS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; ENERGY DEPENDENCE; ENERGY SPECTRA; EXCITATION FUNCTIONS; EXPERIMENTAL DATA; GAMMA SPECTRA; GEV RANGE 10-100; INELASTIC SCATTERING; INTEGRAL CROSS SECTIONS; LEPTONIC DECAY; MUON PAIRS; MUONS MINUS; MUONS PLUS; NEUTRAL-CURRENT INTERACTIONS; PAIR PRODUCTION; PARTICLE WIDTHS; PHOTONS; POSITRONS; TAU PARTICLES; VECTOR CURRENTS; WEAK NEUTRAL CURRENTS; WEINBERG ANGLE; Z NEUTRAL BOSONS
- Descriptors DEC
- ALGEBRAIC CURRENTS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BASIC INTERACTIONS; BOSONS; CORRELATIONS; CROSS SECTIONS; CURRENTS; DATA; DECAY; DISTRIBUTION; ELASTIC SCATTERING; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HEAVY LEPTONS; INFORMATION; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MATTER; MUONS; NEUTRAL CURRENTS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; SCATTERING; SPECTRA; WEAK INTERACTIONS; WEAK PARTICLE DECAY
Optional Information
- Collaborations
- L3 Collaboration.