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Measurement of the proton structure function F2 (x, Q**2) in the low x region at HERA

The H1 collaboration Abt, I. ; Ahmed, T. ; Andreev, V. ; et al.

Nucl.Phys.B 407 (1993) 515-538, 1993.

Inspire Record 357797 DOI 10.17182/hepdata.37121

A measurement of the proton structure function F 2 ( x , Q 2 ) is presented with about 1000 neutral current deep inelastic scattering events for Bjorken x in the range x ⋍ 10 −2 – 10 −4 and Q 2 > 5 GeV 2 . The measurement is based on an integrated luminosity of 22.5 nb −1 recorded by the H1 detector in the first year of HERA operation. The structure function F 2 ( x , Q 2 ) shows a significant rise with decreasing x .

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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A Precise extraction of R = sigma-L / sigma-T from a global analysis of the SLAC deep inelastic e p and e d scattering cross-sections

Whitlow, L.W. ; Rock, Stephen ; Bodek, A. ; et al.

Phys.Lett.B 250 (1990) 193-198, 1990.

Inspire Record 296980 DOI 10.17182/hepdata.29555

We report the extraction of R = σ L / σ T from a global analysis of eight SLAC deep inelastic experiments on e-p and e-d scattering performed between 1970 and 1985. Values of R p , R d , and R d − R p are determined over the entire SLAC kinematic range: 0.1⩽ x ⩽0.9 and 0.6⩽ Q 2 ⩽20.0 (GeV/ c ) 2 . We find that R p = R d . Measured values of R ( x , Q 2 ) are larger than predictions based on perturbative QCD and on QCD with the inclusion of kinematic target mass terms, indicating that dynamical higher twist effects may be important in the SLAC kinematic range.

13 data tables

Table 1

No description provided.

Table 2

Data from experiment E-140.

Table 3

Global extracting of R from all the experiments.