Search for spinless bosons in e+e− annihilation

doi:10.1016/0370-2693(85)90593-3

Physics Letters B

Volume 154, Issues 2–3, 25 April 1985, Pages 236-242

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Abstract

We have measured the cross sections for e⁺e⁻ → e⁺e⁻, e⁺e⁻ → μ⁺μ⁻, e⁺e⁻ → γγ and e⁺e⁻ → hadrons in an energy scan at center of mass energies between 39.79 and 46.72 GeV in 30 MeV steps. New spinless bosons, whose existence has been postulated as a possible means to explain the anomalously large radiative width of the Z⁰ found at the CERN SPS p $p$ collider, are ruled out in the scan region. The data are used to set limits on the couplings to lepton, photon and quark pairs of bosons with masses above 46.72 GeV.

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¹: Supported by the Bundesministerium für Forschung und Technologie.

²: Present address: Fraunhofer Institut, Duisburg, Germany.

³: Supported by the UK Science and Engineering Research Council.

⁴: On leave from Institute of Nuclear Physics, Cracow, Poland.

⁵: Present address: Warsaw University, Warsaw, Poland.

⁶: Present address: Argonne National Laboratory, Argonne, IL, USA.

⁷: On leave from Warsaw University, Warsaw, Poland.

⁸: Present address: SLAC, Stanford, CA, USA.

⁹: On leave from Weizmann Institute, Rehovot, Israel.

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Physics Letters B

Abstract

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Cited by (13)

Search for heavy neutral spinless particles using e<sup>+</sup>e<sup>-</sup> → e<sup>+</sup>e<sup>-</sup> and e<sup>+</sup>e<sup>-</sup> → γγ reactions in the CM energy range between 54 and 64 GeV

Measurement of the total hadronic cross sections in e<sup>+</sup>e<sup>-</sup> annihilation and determination of the standard model parameters

Top search strategies for HERA

Decays of the b quark

An ultra-heavy top quark?

Large transverse momentum W production at Hadron colliders