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Title
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Measurement of the e(+)e(-)->gamma gamma(gamma) cross section at the LEP energies
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Author
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Institution/Organisation
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DELPHI Colloboration
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Abstract
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| The total and the differential cross-sections for the reaction e(+)e(-) --> gamma gamma(gamma) have been measured with the DELPHI detector at LEP at centre-of-mass energies from 130 to 183 GeV for an integrated luminosity of 78.19 pb(-1). The results agree with the QED predictions. The lower limits (obtained including previously published results at the Z(0) energies) on the QED cutoff parameters are Lambda(+) > 253 GeV and Lambda(-) > 225 GeV and the lower bound on the mass of an excited electron with an effective coupling constant lambda(gamma) = 1 is 231 GeV/c(2). All the Limits are at the 95% confidence level. (C) 1998 Published by Elsevier Science B.V. All rights reserved. |
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Language
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English
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Source (journal)
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Physics letters : B. - Amsterdam, 1967, currens
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Publication
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Amsterdam
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North-Holland
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1998
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ISSN
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0370-2693
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DOI
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10.1016/S0370-2693(98)00715-1
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Volume/pages
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433
:3-4
(1998)
, p. 429-440
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ISI
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000075484500029
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Full text (Publisher's DOI)
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