Speaker
Dr
Robert Ciesielski
(DESY)
Description
A search for physics beyond the Standard Model is performed with
high-Q^2 deep inelastic scattering events recorded with
the ZEUS and H1 detectors at HERA. Complete data on scattering of polarized
electrons and positrons from HERA II running are combined with
electron and positron data from HERA I.
ZEUS limits are derived on the effective mass scale
in eeqq contact interactions, on the mass to the Yukawa coupling ratio
for heavy-leptoquark models, on the effective Planck-mass scale in models
with large extra dimensions and on the quark charge radius.
H1 searches for scalar and vector leptoquarks coupling to first, second
and third generation fermions, and sets constraints on leptoquark models,
improving and superceding earlier H1 limits.
Primary author
Paul de Jong
(Nikhef)
