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    Test of QED in e+e−→γγ at LEP (English)

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    In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics ; 250 , 1-2 ; 199-204  ; 1990
    • ISSN:
      0370-2693
    • Article (Journal)  /  Electronic Resource

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    Abstract We have measured the cross-section of the reaction e+e− → γγ at center of mass energies around the Z0 mass. The results are in good agreement with QED predictions. For the QED cutoff parameters the limit of Λ + > 103 GeV and Λ − 118 GeV are found. For the decays Z0→γ,Z0→π 0 γ, Z0→γγγ we find upper limits of 2.9 × 10−4,2.9×10−4 ,4.1×10−4 and 1.2×10−4, respectively. All limits are at 95% CL.

    Table of contents – Volume 250, Issue 1-2

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    1
    Derivation of the interacting boson model from quantum chromodynamics
    Sijacki, Dj / Ne'eman, Y et al. | 1990
    6
    Neutral pion photoproduction at threshold and explicit chiral symmetry breaking
    Schäfer, T. / Weise, W. et al. | 1990
    11
    A y in n-d elastic scattering: a test for three-nucleon calculations
    Brogli-Gysin, C. / Campbell, J. / Haffter, P. / Hammans, M. / Henneck, R. / Lorenzon, W. / Pickar, M.A. / Robinson, S. / Sick, I. et al. | 1990
    15
    The 3He-scattering potential from a model-unrestricted analysis of 3He+208Pb and its interpretation in the folding model
    Heberle, N. / Clement, H. / Ermer, M. / Grabmayr, P. / Hammans, M. / Henneck, R. / Sick, I. et al. | 1990
    19
    Observation of forward neutrons from the break-up of the 11Li neutron halo
    Anne, R. / Arnell, S.E. / Bimbot, R. / Emling, H. / Guillemaud-Mueller, D. / Hansen, P.G. / Johannsen, L. / Jonson, B. / Lewitowicz, M. / Mattsson, S. et al. | 1990
    24
    False-vacuum decay in generalized extended inflation
    Holman, Richard / Kolb, Edward W. / Vadas, Sharon L. / Wang, Yun et al. | 1990
    29
    Charge separation on colliding superconducting cosmic strings
    Allen, T.J. et al. | 1990
    33
    Topological gravity on surfaces with boundaries
    Hughes, James / Montano, David et al. | 1990
    38
    P and Q operator analysis for the two-matrix model
    Tada, Tsukasa / Yamaguchi, Masahiro et al. | 1990
    44
    Membranes and integrable systems
    Hoppe, Jens et al. | 1990
    49
    Is spacetime duality violated in time dependent string solutions?
    Horowitz, Gary T. / Steif, Alan R. et al. | 1990
    56
    Non-polynomial closed string field theory: loops and conformal maps
    Hua, Long / Kaku, Michio et al. | 1990
    64
    Anomalies in non-polynomial closed string field theory
    Kaku, Michio et al. | 1990
    72
    The Weil-Petersson Kähler form on the super Teichmüller space
    Uehara, Shozo / Yasui, Yukinori et al. | 1990
    79
    The Bäcklund transform for the Liouville field in a curved background
    Preitschopf, Christian R. / Thorn, Charles B. et al. | 1990
    84
    Method of orbits and Virasoro Ward identity
    La, HoSeong et al. | 1990
    91
    Topological phase of N = 2 superconformal field theory and topological Landau-Ginzburg field theory
    Ito, Kei et al. | 1990
    96
    A second supersymmetric S-matrix for the perturbed tricritical Ising model
    Fendley, Paul et al. | 1990
    102
    Covariant form for the conserved currents of the sine-Gordon and Liouville theories
    Freedman, D.Z. / Lerda, A. / Penati, S. et al. | 1990
    107
    Superconductivity in 2 + 1 dimensions without parity or time-reversal violation
    Dorey, N. / Mavromatos, N.E. et al. | 1990
    117
    3D field theory model of a parity invariant anyonic superconductor
    Semenofg, Gordon W. / Weiss, Nathan et al. | 1990
    123
    The gluon propagator in QCD2. gauge independence of its singularity structure
    Cangemi, Daniel / Makowka, Michel et al. | 1990
    128
    Counting form factors using the Isgur-Wise symmetry
    Politzer, H.David et al. | 1990
    130
    QCD corrections to the CP asymmetries in B0 decays to CP eigenstates
    Szczepaniak, Adam / Henley, Ernest M. et al. | 1990
    133
    Causality between conducting plates
    Ben-Menahem, Shahar et al. | 1990
    139
    Vacuum energy and the fixed point QED
    Natale, A.A. et al. | 1990
    143
    Mixings of a pseudoscalar glueball
    Genz, Henning / Nowakowski, Marek / Woitschitzky, Diane et al. | 1990
    151
    Polarization in K+ → π + μ + μ −
    Savage, Martin J. / Wise, Mark B. et al. | 1990
    155
    Two-photon physics with ultrahigh-energy heavy-ion beams
    Papageorgiu, E. et al. | 1990
    161
    Strong intermittency in momentum space
    Białas, A. / Seixas, J. et al. | 1990
    164
    Determination of the tau-neutrino helicity
    Albrecht, H. / Ehrlichmann, H. / Harder, G. / Krüger, A. / Nau, A. / Nilsson, A.W. / Nippe, A. / Oest, T. / Reidenbach, M. / Schäfer, M. et al. | 1990
    172
    Search for excited neutrinos in Z decay
    Decamp, D. / Deschizeaux, B. / Goy, C. / Lees, J.-P. / Minard, M.-N. / Alemany, R. / Crespo, J.M. / Delfino, M. / Fernandez, E. / Gaitan, V. et al. | 1990
    183
    A determination of electroweak parameters from Z0 decays into charged leptons
    Adeva, B. / Adriani, O. / Aguilar-Benitez, M. / Akbari, H. / Alcaraz, J. / Aloisio, A. / Alverson, G. / Alviggi, M.G. / An, Q. / Anderhub, H. et al. | 1990
    193
    A precise extraction of R=σ L/σ T from a global analysis of the SLAC deep inelastic e-p and e-d scattering cross sections
    Whitlow, L.W. / Rock, S. / Bodek, A. / Dasu, S. / Riordan, E.M. et al. | 1990
    199
    Test of QED in e+e−→γγ at LEP
    Adeva, B. / Adriani, O. / Aguilar-Benitez, M. / Akbari, H. / Alcaraz, J. / Aloisio, A. / Alverson, G. / Alviggi, M.G. / An, Q. / Anderhub, H. et al. | 1990
    205
    Search for excited taus from Z0 decays
    Adeva, B. / Adriani, O. / Aguilar-Benitez, M. / Akbari, H. / Alcaraz, A. / Aloisio, A. / Alverson, G. / Alviggi, M.G. / An, Q. / Anderhub, H. et al. | 1990
    212
    Errata
    | 1990
    v
    Editorial Board
    | 1990

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