Data di Pubblicazione:
1992
Abstract:
Results are presented on the ratio of neutron and proton structure functions, F2n/F2p, deduced from deep inelastic scattering of muons from hydrogen and deuterium. The data, which were obtained at the CERN muon beam at 90 and 280 GeV incident energy, cover the kinematic range x = 0.002-0.80 and Q2 = 0.1-190 GeV2. The measured structure function ratios have small statistical and systematic errors, particularly at small and intermediate x. The observed Q2 dependence in the range x = 0.1-0.4 is stronger than predicted by perturbative QCD. From the present data together with results from other experiments it is suggested that the twist-four coefficient for the proton is smaller than that for the neutron for x larger than 0.2.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
NUCLEON STRUCTURE FUNCTIONS; HIGH STATISTICS MEASUREMENT; PROTON STRUCTURE FUNCTIONS; LEADING ORDER; HIGH Q2; ELECTROMAGNETIC CORRECTIONS; ELECTRON-SCATTERING; SPECTROMETER SYSTEM; LEPTON SCATTERING; PARTON DENSITIES
Elenco autori:
P. AMAUDRUZ;M. ARNEODO;A. ARVIDSON;B. BADELEK;G. BAUM;J. BEAUFAYS;I. G. BIRD;M. BOTJE;C. BROGGINI;W. BRUCKNER;A. BRULL;W. J. BURGER;J. CIBOROWSKI;R. VANDANTZIG;H. DOBBELING;J. DOMINGO;J. DRINKARD;H. ENGELIEN;M. I. FERRERO;L. FLURI;P. GRAFSTROM;D. VONHARRACH;M. VANDERHEIJDEN;C. HEUSCH;Q. INGRAM;K. JANSON;M. DEJONG;E. M. KABUSS;R. KAISER;T. J. KETEL;F. KLEIN;B. KORZEN;U. KRUNER;S. KULLANDER;U. LANDGRAF;F. LETTENSTROM;T. LINDQVIST;G. K. MALLOT;C. MARIOTTI;G. VANMIDDELKOOP;A. MILSZTAJN;Y. MIZUNO;J. NASSALSKI;D. NOWOTNY;N. PAVEL;C. PERONI;H. PESCHEL;B. POVH;R. RIEGER;K. RITH;K. ROHRICH;E. RONDIO;L. ROPELEWSKI;A. SANDACZ;C. SCHOLZ;R. SCHUMACHER;U. SENNHAUSER;F. SEVER;T. A. SHIBATA;M. SIEBLER;A. SIMON;A. STAIANO;G. TAYLOR;M. TREICHEL;M. VIRCHAUX;J. L. VUILLEUMIER;T. WALCHER;R. WINDMOLDERS;F. ZETSCHE
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