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Measurement of high-Q2 neutral-current e+p deep inelastic scattering cross-sections at HERA
Journal article   Peer reviewed

Measurement of high-Q2 neutral-current e+p deep inelastic scattering cross-sections at HERA

ZEUS Collaboration, J Repond and U Mallik
The European physical journal. C, Particles and fields, Vol.11(3), pp.427-445
12/1999
DOI: 10.1007/s100529900188
url
https://ruj.uj.edu.pl/handle/item/562740View
Open Access

Abstract

The e+p neutral-current deep inelastic scattering differential cross-sections dσ/dQ2, for Q2 > 400 GeV2, dσ/dx and dσ/dy, for Q2 > 400, 2500 and 10000 GeV2, have been measured with the ZEUS detector at HERA. The data sample of 47.7 pb-1 was collected at a center-of-mass energy of 300 GeV. The cross-section, dσ/dQ2, falls by six orders of magnitude between Q2 = 400 and 40000 GeV2. The predictions of the Standard Model are in very good agreement with the data. Complementing the observations of time-like Z° contributions to fermion-antifermion annihilation, the data provide direct evidence for the presence of Z° exchange in the space-like region explored by deep inelastic scattering.

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