64 research outputs found

    Measurement of hadron and lepton-pair production at 161 GeV<root s<172 GeV at LEP

    Get PDF
    Contains fulltext : 26256.pdf (publisher's version ) (Open Access

    A Measurement of Tau Polarization in Z0 Decays

    Get PDF
    Contains fulltext : 26841___.PDF (publisher's version ) (Open Access

    A Measurement of Pi-Polarization at Lep

    Get PDF
    Contains fulltext : 26223.pdf (publisher's version ) (Open Access

    High Mass Photon Pairs in L+L-Gamma-Gamma Events at Lep

    Get PDF
    Contains fulltext : 29797.PDF (publisher's version ) (Open Access

    A Test of Quantum Electrodynamics in the Reaction E+E- -]Gamma-Gamma(Gamma)

    Get PDF
    Contains fulltext : 26858___.PDF (publisher's version ) (Open Access

    Inclusive J-Production in Z(0) Decays

    Get PDF
    Contains fulltext : 26831___.PDF (publisher's version ) (Open Access

    Search for the Neutral Higgs Boson at Lep

    Get PDF
    Contains fulltext : 26853___.PDF (publisher's version ) (Open Access

    Measurement of Eta(C) Production in Untagged 2-Photon Collisions at Lep

    Get PDF
    Contains fulltext : 26838___.PDF (publisher's version ) (Open Access

    K-S(0) and Lambda production in quark and gluon jets at LEP RID C-5719-2008

    No full text

    Inclusive J, Psi' and Chi(c) production in hadronic Z decays

    No full text
    We report on measurements of the inclusive production of J, psi' and chi(c) mesons in hadronic Z decays, based on 3.2 million hadronic events collected using the L3 detector at LEP. The J and psi' mesons are reconstructed through their decays into lepton pairs, while the chi(c) mesons are reconstructed via the decay mode chi(c) --> J + gamma. The measured branching fractions are: Br(Z --> J + X) = (3.40 +/- 0.23 (stat.) +/- 0.27 (sys.)) x 10(-3), Br(Z --> psi' + X) = (1.6 +/- 0.5 (stat.) +/- 0.3 (sys.)) x 10(-3) Br(Z --> chi(cl) + X) = (2.7 +/- 0.6 (stat.) +/- 0.5 (sys.)) x 10(-3). In the absence of a clear chi(c2) signal, the upper limit at 90% C.L. is set: Br(Z --> chi(c2) + X) < 3.2 x 10(-3). (C) 1997 Elsevier Science B.V
    • …
    corecore