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Measurement of high Q**2 neutral current e+ p deep inelastic scattering cross-sections at HERA

The ZEUS collaboration Breitweg, J. ; Chekanov, S. ; Derrick, M. ; et al.

Eur.Phys.J.C 11 (1999) 427-445, 1999.

Inspire Record 500267 DOI 10.17182/hepdata.44100

The e^+p neutral-current deep inelastic scattering differential cross-sections $d\sigma/dQ^2$, for Q^2 > 400 GeV^2, $d\sigma/dx$ and $d\sigma/dy$, for Q^2 > 400, 2500 and 10000 GeV^2, 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, $d\sigma/dQ^2$, falls by six orders of magnitude between Q^2 = 400 and 40000 GeV^2. The predictions of the Standard Model are in very good agreement with the data. Complementing the observations of time-like Z^0 contributions to fermion-antifermion annihilation, the data provide direct evidence for the presence of Z^0 exchange in the space-like region explored by deep inelastic scattering.

7 data tables

Table 1

The differential cross section as a function of Q**2.

Table 2

The differential cross section as a function of x, the Bjorken x variable.

Table 3

The differential cross section as a function of x, the Bjorken x variable.