HEPData Search

Showing 5 of 5 results

Measurement of xF3 and F2 structure functions in low Q**2 region with the IHEP-JINR neutrino detector.

The IHEP-JINR Neutrino Detector collaboration Sidorov, A.V. ; Anykeev, V.B. ; Batusov, Y.A. ; et al.

Eur.Phys.J.C 10 (1999) 405-408, 1999.

Inspire Record 500337 DOI 10.17182/hepdata.43397

The isoscalar structure functions $xF_3$ and $F_2$ are measured as functions of $x$ averaged over all $Q^2$ permissible for the range of 6 to 28 GeV of incident neutrino (anti-neutrino) energy at the IHEP-JINR Neutrino Detector. The QCD analysis of $xF_3$ structure function provides $\Lambda_{\bar{MS}}^{(4)} = (411 \pm 200)$ MeV under the assumption of QCD validity in the region of low $Q^2$. The corresponding value of the strong interaction constant $\alpha_S (M_Z) = 0.123^{+0.010}_{-0.013}$ agrees with the recent result of the CCFR collaboration and with the combined LEP/SLC result.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Measurement of x F3, F2 structure functions and Gross-Llewellyn-Smith sum rule with IHEP-JINR neutrino detector.

The IHEP-JINR Neutrino Detector collaboration Barabash, L.S. ; Baranov, S.A. ; Batusov, Yu.A. ; et al.

JINR-E1-96-308, 1996.

Inspire Record 426123 DOI 10.17182/hepdata.41668

The isoscalar structure functions xF_3 and F_2 are measured as functions of x averaged over all Q~2 permissible for the range 6 to 28 GeV of incident (anti)neutrino energy. With the measured values of xF_3, the value of the Gross-Llewellyn Smith sum rule is found to be $\int_{0}~{1}{F_3 dx} = 2.13\pm0.38 (stat)\pm 0.26 (syst)$. The QCD analysis of xF_3 provides $\Lambda_{\overline{MS}} =358 \pm 59 MeV$ . The obtained value of the strong interaction constant $\alpha_S (M_Z)=0.120~{+3}_{-4}$ is larger than most of the deep inelastic scattering results.

1 data table

Table 1

The value of F2 is extracted with R = 0. The difference F2(C=R=.1)-F2(C=R=0.) is also presented.

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.