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

The ZEUS collaboration Derrick, M. ; Krakauer, D. ; Magill, S. ; et al.

Phys.Rev.Lett. 75 (1995) 1006-1011, 1995.

Inspire Record 393918 DOI 10.17182/hepdata.45004

Deep inelastic $e~-p$ scattering has been studied in both the charged-current (CC) and neutral-current (NC) reactions at momentum transfers squared, $Q~2$, between 400 GeV$~2$ and the kinematic limit of 87500 GeV$~2$ using the ZEUS detector at the HERA $ep$ collider. The CC and NC total cross sections, the NC to CC cross section ratio, and the differential cross sections, $ d\sigma/dQ~2 $, are presented. For $Q~2 \simeq M_W~2$, where $M_W$ is the mass of the $W$ boson, the CC and NC cross sections have comparable magnitudes, demonstrating the equal strengths of the weak and electromagnetic interactions at high $Q~2$. The $Q~2$ dependence of the CC cross section determines the mass term in the CC propagator to be $M_{W} = 76 \pm 16 \pm 13$GeV.

4 data tables

Table 1

Data requested from authors.

Table 2

Neutral current cross sections.

Table 3

Charged current cross sections.

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Total photoproduction cross-section measurement at HERA energies

The H1 collaboration Ahmed, T. ; Andreev, V. ; Andrieu, B. ; et al.

Phys.Lett.B 299 (1993) 374-384, 1993.

Inspire Record 340891 DOI 10.17182/hepdata.45139

We present first results on the total photoproduction cross section measurement with the H1 detector at HERA. The data were extracted from low Q 2 collisions of 26.7 GeV electrons with 820 GeV protons. The γp total cross section has been measured by two independent methods in the γp center of mass energy range from 90 to 290 GeV. For an average center of mass energy of 195 GeV a value of σ tot ( γp ) = 159 ± 7 (stat.) ± 20 (syst.) μb was obtained.

2 data tables

Table 1

Data from tagged sample.

Table 2

Data from untagged sample.

A Measurement of sigma(tot) (gamma p) at s**(1/2) = 210-GeV

The ZEUS collaboration Derrick, M. ; Krakauer, D. ; Magill, S. ; et al.

Phys.Lett.B 293 (1992) 465-477, 1992.

Inspire Record 339275 DOI 10.17182/hepdata.45171

The total photoproduction cross section is determined from a measurement of electroproduction with the ZEUS detector at HERA. The Q 2 values of the virtual photons are in the range 10 −7 < Q 2 <2×10 −2 GeV 2 . The γp total cross section in the γp centre of mass energy range 186–233 GeV is 154 ± 16 (stat.) ± 32 (syst.) μ b.

1 data table

Table 1

Scattered electron in range 10 to 16 GeV.