2020 Impact factor 4.590
Particles and Fields
Eur. Phys. J. C 14, 165-178
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

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$\times$HERA project.

Copyright Società Italiana di Fisica, Springer-Verlag 2000