Limits on contact interactions and leptoquarks at HERA

(ZEUS Collaboration)

Research output: Contribution to journalArticle (Academic Journal)peer-review

8 Citations (Scopus)
120 Downloads (Pure)


High-precision HERA data corresponding to a luminosity of around 1 fb-1 have been used in the framework of eeqq contact interactions (CI) to set limits on possible high-energy contributions beyond the Standard Model to electron-quark scattering. Measurements of the inclusive deep inelastic cross sections in neutral and charged current ep scattering were considered. The analysis of the ep data has been based on simultaneous fits of parton distribution functions including contributions of CI couplings to ep scattering. Several general CI models and scenarios with heavy leptoquarks were considered. Improvements in the description of the inclusive HERA data were obtained for a few models. Since a statistically significant deviation from the Standard Model cannot be established, limits in the TeV range were set on all models considered.

Original languageEnglish
Article number092004
Number of pages12
JournalPhysical Review D
Issue number9
Publication statusPublished - 1 May 2019


Dive into the research topics of 'Limits on contact interactions and leptoquarks at HERA'. Together they form a unique fingerprint.

Cite this