Search for R-parity breaking sneutrino exchange at LEP

Gurtu, A. ; et., al (1997) Search for R-parity breaking sneutrino exchange at LEP Physics Letters B, 414 (3-4). pp. 373-381. ISSN 0370-2693

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We report on a search for R-parity breaking effects due to supersymmetric tau-sneutrino exchange in the reactions e+e- → e+e- and e+e- → µ+µ- at centre-of-mass energies from 91 GeV to 172 GeV, using the L3 detector at LEP. No evidence for deviations from the Standard Model expectations of the measured cross sections and forward-backward asymmetries for these reactions is found. Upper limits for the couplings λ131 and λ232 for sneutrino masses up to mv̲ T ≤ 190 GeV are determined from an analysis of the expected effects due to tau sneutrino exchange.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:84066
Deposited On:24 Feb 2012 05:34
Last Modified:24 Feb 2012 05:34

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