DOI 10.1007/s100520000332
Search and identification of scalar and vector leptoquarks at HERA with polarization
P. Taxil1,2 - E. Tugcu1,2,3 - J.-M. Virey1,2,4
1 Centre de Physique Théorique, CNRS-Luminy, Case
907, 13288
Marseille Cedex 9, France
2 Université de Provence, Marseille,
France
3 Galatasaray University, Çiragan Cad. 102, Ortaköy
80840-Istanbul,
Turkey
4 Institut für Physik, Universität Dortmund, 44221
Dortmund, Germany
Received: 9 December 1999 / Published online: 17 March 2000 - © Springer-Verlag 2000
Abstract
We analyze the effects of scalar and vector leptoquarks on
various observables in electron (positron)-proton
deep inelastic scattering.
In view of the future program of the HERA collider, with a high
luminosity and
also with polarization, we present the constraints that can be
reached using this
facility for several leptoquark scenarios.
We address the question of the identification of the nature of
a leptoquark when it is discovered.
We emphasize the relevance of having polarized lepton and proton
beams
in order to completely disentangle the various leptoquark models.
This study is also relevant in the context of the TESLA
HERA
project.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
