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Study of fermion pair production in $e^+ e^-$ collisions at 130-GeV to 183-GeV

ALEPH Collaboration, The and Barate, R. and Betteridge, Andrew and Bowdery, Christopher and Colrain, Paul and Finch, Alexander and Foster, Frank and Hughes, Gareth and Jones, Roger and Williams, Mark (2000) Study of fermion pair production in $e^+ e^-$ collisions at 130-GeV to 183-GeV. The European Physical Journal C (EPJ C) - Particles and Fields, 12 (2). pp. 183-207. ISSN 1434-6052

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Abstract

The cross sections and forward-backward asymmetries of hadronic and leptonic events produced in e+e− collisions at centre-of-mass energies from 130 to 183 GeV are presented. Results for e+e− , μ+μ− , τ+τ− , qq¯ , bb¯ and cc¯ production show no significant deviation from the Standard Model predictions. This enables constraints to be set upon physics beyond the Standard Model such as four-fermion contact interactions, leptoquarks, Z′ bosons and R-parity violating squarks and sneutrinos. Limits on the energy scale Λ of e+e−ff¯ contact interactions are typically in the range from 2 to 10 TeV. Limits on R-parity violating sneutrinos reach masses of a few hundred GeV/ c2 for large values of their Yukawa couplings.

Item Type: Article
Journal or Publication Title: The European Physical Journal C (EPJ C) - Particles and Fields
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63963
Deposited By: ep_importer_pure
Deposited On: 08 May 2013 13:58
Refereed?: Yes
Published?: Published
Last Modified: 10 Oct 2017 18:02
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/63963

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