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    Single- and multi-photon events with missing energy in e+e− collisions at LEP (English)

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    In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics ; 587 , 1-2 ; 16-32  ; 2004
    • ISSN:
      0370-2693
    • Article (Journal)  /  Electronic Resource

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    AbstractSingle- and multi-photon events with missing energy are selected in 619 pb−1 of data collected by the L3 detector at LEP at centre-of-mass energies between 189 and 209 GeV. The cross sections of the process e + e −→ν ν ̄ γ(γ) are found to be in agreement with the Standard Model expectations, and the number of light neutrino species is determined, including lower energy data, to be Nν=2.98±0.05±0.04. Selection results are given in the form of tables which can be used to test future models involving single- and multi-photon signatures at LEP. These final states are also predicted by models with large extra dimensions and by several supersymmetric models. No evidence for such models is found. Among others, lower limits between 1.5 and 0.65 TeV are set, at 95% confidence level, on the new scale of gravity for the number of extra dimensions between 2 and 6.

    Table of contents – Volume 587, Issue 1-2

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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
    Stochastic inflation on the brane
    Kunze, Kerstin E et al. | 2004
    7
    Rotating boson stars in 2+1 dimensions
    Astefanesei, Dumitru / Radu, Eugen et al. | 2004
    16
    Single- and multi-photon events with missing energy in e+e− collisions at LEP
    Achard, P. / Adriani, O. / Aguilar-Benitez, M. / Alcaraz, J. / Alemanni, G. / Allaby, J. / Aloisio, A. / Alviggi, M.G. / Anderhub, H. / Andreev, V.P. et al. | 2004
    33
    Decay widths and energy shifts of ππ and πK atoms
    Schweizer, J et al. | 2004
    33
    Decay widths and energy shifts of pp and pK atoms
    Schweizer, J. et al. | 2004
    41
    Polarization observables in hard rescattering mechanism of deuteron photodisintegration
    Sargsian, Misak M et al. | 2004
    52
    Nuclear shadowing in neutrino–nucleus deeply inelastic scattering
    Qiu, Jianwei / Vitev, Ivan et al. | 2004
    62
    Prospects for pentaquark production at meson factories
    Browder, Thomas E / Klebanov, Igor R / Marlow, Daniel R et al. | 2004
    69
    Chiral multiplets of excited mesons
    Glozman, L.Ya et al. | 2004
    78
    The hard pomeron in soft data
    Cudell, J.R / Martynov, E / Selyugin, O / Lengyel, A et al. | 2004
    87
    The gluon splitting function at moderately small x
    Ciafaloni, M / Colferai, D / Salam, G.P / Staśto, A.M et al. | 2004
    95
    Chargino contribution to the rare decay b→ss d ̄
    Wu, Xiao-Hong / Zhang, Da-Xin et al. | 2004
    100
    Two particle states in an asymmetric box
    Li, Xin / Liu, Chuan et al. | 2004
    105
    Proton decay in a minimal SUSY SO(10) model for neutrino mixings
    Goh, H.S. / Mohapatra, R.N. / Nasri, S. / Ng, Siew-Phang et al. | 2004
    117
    A comment on the self-tuning of cosmological constant with deficit angle on a sphere
    Lee, Hyun Min et al. | 2004
    121
    Brane–antibrane solution and SUSY effective potential in five-dimensional Mirabelli–Peskin model
    Ichinose, Shoichi / Murayama, Akihiro et al. | 2004
    133
    World-line deviation and spinning particles
    Mohseni, Morteza et al. | 2004
    138
    c-map, very special quaternionic geometry and dual Kähler spaces
    D'Auria, R / Ferrara, S / Trigiante, M et al. | 2004
    138
    c-map, very special quaternionic geometry and dual Kahler spaces
    D'Auria, R. / Ferrara, S. / Trigiante, M. et al. | 2004
    143
    Anti-symmetric rank-two tensor matter field on superspace for NT=2
    Spalenza, Wesley / Ney, Wander G / Helayel-Neto, J.A et al. | 2004
    150
    Veneziano–Yankielowicz superpotential terms in N =1 SUSY gauge theories
    Gripaios, Ben M. / Wheater, John F. et al. | 2004
    157
    Topological susceptibility in full QCD with Ginsparg–Wilson fermions
    Giusti, L. / Rossi, G.C. / Testa, M. et al. | 2004
    iii
    Editors
    | 2004
    v
    Instructions to authors
    | 2004

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