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Searches for New Physics at HERA

Masahiro Kuze·H1 Collaboration·ZEUS Collaboration
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Abstract

Recent results from searches for new physics at HERA are reviewed. Exploiting the uniqueness of lepton-hadron collisions at high energy, searches are performed for electron-quark resonant states (leptoquarks or squarks in R-parity-violating supersymmetry) or excited states of fermions. New phenomena at a very high energy scale, manifested at present energies as effective four-fermion contact interaction, are also investigated, including cases with lepton-flavor violation. Finally, the status of events with a high-energy lepton and missing transverse momentum is presented, resulting in the most stringent constraint on the flavor-changing neutral current t-u-γcoupling which could yield single-top production.

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Masahiro Kuze, H1 Collaboration, ZEUS Collaboration. 2001-06-07. Searches for New Physics at HERA. https://arxiv.org/abs/hep-ex/0106030

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