EPJ

2023 Impact factor 4.2
EPJ C - Particles and Fields
Particles and Fields

Eur. Phys. J. C 10, 405-408
DOI 10.1007/s100529900143

Measurement of the xF3 and F2 structure functions in the low Q2 region with the IHEP-JINR neutrino detector

A.V. Sidorov1 - V.B. Anykeyev2 - Y.A. Batusov1 - S.A. Bunyatov1 - A.A. Borisov2 - N.I. Bozhko2 - S.K. Chernichenko2 - G.L. Chukin2 - O.Y. Denisov1 - R.M. Fachrutdinov2 - V.N. Goryachev2 - M.Y. Kazarinov1 - M.M. Kirsanov2 - O.L. Klimov1 - A.I. Kononov2 - A.S. Kozhin2 - A.V. Krasnoperov1 - V.I. Kravtsov2 - V.E. Kuznetsov1 - V.V. Lipajev2 - A.I. Mukhin2 - Y.A. Nefedov1 - B.A. Popov1 - S.N. Prakhov1 - Y.I. Salomatin2 - V.I. Snyatkov1 - Y.M. Sviridov2 - V.V. Tereshchenko1 - V.L. Tumakov2 - V.Y. Valuev1 - A.S. Vovenko2

1 Joint Institute for Nuclear Research, 141980 Dubna Moscow Region, Russia
2 Institute for High Energy Physics, 142284 Protvino Moscow Region, Russia

Received: 3 November 1998 / Revised version: 27 May 1999 / Published online: 12 August 1999

Abstract
The isoscalar structure functions xF3 and F2 are measured as functions of x averaged over all Q2 permissible for the range of 6 to 28GeV of incident neutrino (anti-neutrino) energy at the IHEP-JINR neutrino detector. The QCD analysis of the xF3 structure function yields $\Lambda_{\overline{\mathrm {MS}}}^{(4)} = (411 \pm 200)$MeV under the assumption of the validity of QCD in the region of low Q2. The corresponding value of the strong interaction constant $\alpha_{\mathrm {S}} (M_Z) = 0.123^{+0.010}_{-0.013}$agrees with the recent result of the CCFR collaboration and with the combined LEP/SLC result.

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