Cross sections, angular distributions and forward-backward asymmetries are presented, of two-fermion events produced in e(+)e(-) collisions at centre-of-mass energies from 189 to 209 GeV at LEP, measured with the ALEPH detector. Results for e(+)e(-), mu(+)mu(-), tau(+)tau(-), q (q) over bar, b (b) over bar and c (c) over bar production are in agreement with the standard model predictions. Constraints are set on scenarios of new physics such as four-fermion contact interactions, leptoquarks, Z' bosons, TeV-scale quantum gravity and R-parity violating squarks and sneutrinos. RI ANTONELLI, ANTONELLA/C-6238-2011; Jones, Roger/H-5578-2011; Passalacqua, Luca/F-5127-2011; O'Shea, Val/G-1279-2010; Focardi, Ettore/E-7376-2012

Fermion pair production in e(+)e(-) collisions at 189-209 GeV and constraints on physics beyond the standard model

TRICOMI, Alessia Rita;
2007-01-01

Abstract

Cross sections, angular distributions and forward-backward asymmetries are presented, of two-fermion events produced in e(+)e(-) collisions at centre-of-mass energies from 189 to 209 GeV at LEP, measured with the ALEPH detector. Results for e(+)e(-), mu(+)mu(-), tau(+)tau(-), q (q) over bar, b (b) over bar and c (c) over bar production are in agreement with the standard model predictions. Constraints are set on scenarios of new physics such as four-fermion contact interactions, leptoquarks, Z' bosons, TeV-scale quantum gravity and R-parity violating squarks and sneutrinos. RI ANTONELLI, ANTONELLA/C-6238-2011; Jones, Roger/H-5578-2011; Passalacqua, Luca/F-5127-2011; O'Shea, Val/G-1279-2010; Focardi, Ettore/E-7376-2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/36987
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