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    Measurement of gA and gv, the neutral current coupling constants to leptons (English)

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    In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics ; 236 , 1 ; 109-115  ; 1989
    • ISSN:
      0370-2693
    • Article (Journal)  /  Electronic Resource

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    AbstractWe have measured both the rates and the forward-backward asymmetry of ℓ+ℓ− from Z0→ℓ+ℓ− (where ℓ=μ, τ) with the L3 detector. We obtained Γℓℓ=88±4±3 MeV and the vector neutral current coupling constant, gv=0.00±0.07 and the axial vector neutral current coupling constant, gA=−0.515±0.015.

    Table of contents – Volume 236, Issue 1

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    The tables of contents are generated automatically and are based on the data records of the individual contributions available in the index of the TIB portal. The display of the Tables of Contents may therefore be incomplete.

    1
    Bound kaon approach to strangeness in the Skyrme model and nonleptonic hyperon decays
    Kondo, Y. / Saito, S. / Otofuji, T. et al. | 1989
    7
    Nucleon alignment in 191Hg. A competing mechanism at moderate spins
    Ye, D. / Janssens, R.V.F. / Carpenter, M.P. / Moore, E.F. / Ahmad, I. / Beard, K.B. / Benet, Ph. / Drigert, M.W. / Garg, U. / Grabowski, Z.W. et al. | 1989
    12
    Quantum gravity in two dimensions and the SL(2, R ) current algebra
    Helayël-neto, JoséA. / Mokhtari, Susan / William Smith, A. et al. | 1989
    17
    BRST anomaly in string theory
    Demichev, A.P. / Iofa, M.Z. et al. | 1989
    21
    Higher-spin theories, W∞ algebras and their super-extensions
    Pope, C.N. / Shen, X. et al. | 1989
    27
    General D=1 local supercoordinate transformations and their supercurrent algebras
    Chaichian, M. / Leites, D.A. / Lukierski, J. et al. | 1989
    33
    Extended supersymmetries in topological Yang-Mills theory
    Galperin, A. / Ogievetsky, O. et al. | 1989
    39
    Covariant quantization of Siegel's superparticle
    Huq, M. et al. | 1989
    44
    Renormalization of topological actions and anyonic superconductivity
    Morozov, A.Yu. / Niemi, Antti J. et al. | 1989
    49
    The statistical properties of rigid strings
    Copeland, E. / Haws, D. / Holbraad, S. / Rivers, R. et al. | 1989
    54
    Rotational and vibrational excitations of weak skyrmions
    Brihaye, Yves / Kleihaus, Burkhard / Kunz, Jutta et al. | 1989
    61
    Fractal properties of the deconfinement domains in the SU(2) lattice gauge theory
    Polikarpov, M.I. et al. | 1989
    63
    On the perturbative QCD calculation of the R ratio for τ decay
    Maxwell, C.J. / Nicholls, J.A. et al. | 1989
    69
    Testing relativistic corrections to the q q potential on the heavy quarkonium spectrum
    Brambilla, N. / Prosperi, G.M. et al. | 1989
    76
    Is there a bound Σ4He?
    Dalitz, R.H. / Davis, D.H. / Deloff, A. et al. | 1989
    81
    Search for neutral boson in orthopositronium decay
    Tsuchiaki, M. / Orito, S. / Yoshida, T. / Minowa, M. et al. | 1989
    86
    Search for supersymmetric particles using acoplanar charged-particle pairs from Z0 decays
    Decamp, D. / Deschizeaux, B. / Lees, J.-P. / Minard, M.-N. / Crespo, J.M. / Delfino, M. / Fernandez, E. / Martinez, M. / Miquel, R. / Mir, Ll.M. et al. | 1989
    95
    A new experimental limit on neutron-antineutron transitions
    Baldo-Ceolin, M. / Benetti, P. / Bitter, T. / Bobisut, F. / Calligarich, E. / Dolfini, R. / Dubbers, D. / Eisert, F. / El-Muzeini, P. / Genoni, M. et al. | 1989
    102
    Study of antideuteron production in e+ e− annihilation at 10 GeV centre-of-mass energy
    Albrecht, H. / Gläser, R. / Harder, G. / Krüger, A. / Nippe, A. / Oest, T. / Reidenbach, M. / Schäfer, M. / Schmidt-Parzefall, W. / Schröder, H. et al. | 1989
    109
    Measurement of gA and gv, the neutral current coupling constants to 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. | 1989
    116
    Measurement of the branching ratio for the π0-meson decay into a photon and a positronium atom
    Afanasyev, L.G. / Chvyrov, A.S. / Karpukhin, V.V. / Komarov, V.I. / Kolomyichenko, A.V. / Kruglov, V.V. / Kuptsov, A.V. / Nemenov, L.L. / Nikitin, M.V. / Pustylnik, Zh.P. et al. | 1989
    v
    Editorial Board
    | 1990

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