12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Study of fermion pair production in $e^+ e^-$ c...
View graph of relations

« Back

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

Research output: Contribution to journalJournal article

Published

Journal publication date01/2000
JournalThe European Physical Journal C (EPJ C) - Particles and Fields
Journal number2
Volume12
Number of pages25
Pages183-207
Original languageEnglish

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.