Conference Presentation

PUBDB-2020-04513

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Contact Interactions @ HERA

Wichmann, K. (Corresponding author)DESY* ; Wing, M.Extern*

2020

Abstract: 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.

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Contributing Institute(s):

1. ZEUS Kollaboration (ZEUS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. HERA: ZEUS

Appears in the scientific report 2020

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