A study of single and multi-photon production in e+e− collisions at centre-of-mass energies of 130 and 136 GeV

Buskulic, D. and Finch, Alexander (1996) A study of single and multi-photon production in e+e− collisions at centre-of-mass energies of 130 and 136 GeV. Physics Letters B, 384 (1-4). pp. 333-342. ISSN 0370-2693

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Abstract

The production of final states involving one or more energetic photons from e+e− collisions at high energies is studied using data collected by the ALEPH detector at LEP. The data consist of two samples of 2.9 pb−1 each, recorded at centre-of-mass energies of 130 GeV and 136 GeV. The data are in agreement with the predictions of the Standard Model. From an analysis of two-photon final states new limits are placed on the parameters of models involving e+e−γγ contact interactions and excited electrons. The 95% confidence level lower limits on the QED cut-off parameters Λ+ and Λ− are found to be 169 and 132 GeV respectively.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
64050
Deposited By:
Deposited On:
09 May 2013 14:32
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Jan 2020 07:36