Data di Pubblicazione:
1995
Abstract:
The gluon momentum density xg(x, Q(2)) of the proton was extracted at Q(2) = 20 GeV2 for small values of x between 4 x 10(-4) and 10(-2) from the scaling violations of the proton structure function F-2 measured recently by ZEUS in deep inelastic neutral current ep scattering at HERA. The extraction was performed in two ways. Firstly, using a global NLO fit to the ZEUS data on F-2 at low x constrained by measurements from NMC at larger x; and secondly using published approximate methods for the solution of the GLAP QCD evolution equations. Consistent results are obtained. A substantial increase of the gluon density is found at small x in comparison with the NMC result obtained at larger values of x.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
ZEUS; INELASTIC MUON SCATTERING; DEUTERON STRUCTURE FUNCTIONS; NUCLEON STRUCTURE FUNCTIONS; HIGH STATISTICS MEASUREMENT; PARTON DISTRIBUTIONS; LEADING ORDER; HIGH Q2; PERTURBATION-THEORY; SCALING VIOLATIONS; PP COLLISIONS
Elenco autori:
M. DERRICK;D. KRAKAUER;S. MAGILL;B. MUSGRAVE;J. REPOND;J. SCHLERETH;R. STANEK;R. L. TALAGA;J. THRON;F. ARZARELLO;R. AYAD;G. BARI;M. BASILE;L. BELLAGAMBA;D. BOSCHERINI;A. BRUNI;G. BRUNI;P. BRUNI;G. C. ROMEO;G. CASTELLINI;M. CHIARINI;L. CIFARELLI;F. CINDOLO;F. CIRALLI;A. CONTIN;S. DAURIA;F. FRASCONI;I. GIALAS;P. GIUSTI;G. IACOBUCCI;G. LAURENTI;G. LEVI;A. MARGOTTI;T. MASSAM;R. NANIA;C. NEMOZ;F. PALMONARI;A. POLINI;G. SARTORELLI;R. TIMELLINI;Y. Z. GARCIA;A. ZICHICHI;A. BARGENDE;J. CRITTENDEN;K. DESCH;B. DIEKMANN;T. DOEKER;M. ECKERT;L. FELD;A. FREY;M. GEERTS;G. GEITZ;M. GROTHE;H. HARTMANN;D. HAUN;K. HEINLOTH;E. HILGER;H. P. JAKOB;U. F. KATZ;S. M. MARI;A. MASS;S. MENGEL;J. MOLLEN;E. PAUL;C. REMBSER;R. SCHATTEVOY;D. SCHRAMM;J. STAMM;R. WEDEMEYER;S. CAMPBELLROBSON;A. CASSIDY;N. DYCE;B. FOSTER;S. GEORGE;R. GILMORE;G. P. HEATH;H. F. HEATH;T. J. LLEWELLYN;C. J. S.;D. J. P.;J. A. OMARA;R. J. TAPPER;S. S. WILSON;R. YOSHIDA;R. R. RAU;M. AMEODO;L. IANNOTTI;M. SCHIOPPA;G. SUSINNO;A. BERNSTEIN;A. CALDWELL;J. A. PARSONS;S. RITZ;F. SCIULLI;P. B. STRAUB;L. WAI;S. YANG;P. BORZEMSKI;J. CHWASTOWSKI;A. ESKREYS;K. PIOTRZKOWSKI;M. ZACHARA;L. ZAWIEJSKI;L. ADAMCZYK;B. BEDNAREK;K. ESKREYS;K. JELEN;D. KISIELEWSKA;T. KOWALSKI;E. RULIKOWSKAZAREBSKA;L. SUSZYCKI;J. ZAJAC;T. KEDZIERSKI;A. KOTANSKI;M. PRZYBYCIEN;L. A. T.;U. BEHRENS;J. K. BIENLEIN;S. BOTTCHER;C. COLDEWEY;G. DREWS;M. FLASINSKI;D. J. GILKINSON;P. GOTTLICHER;B. GUTJAHR;T. HAAS;W. HAIN;D. HASELL;H. HESSLING;H. HULTSCHIG;Y. IGA;P. JOOS;M. KASEMANN;R. KLANNER;W. KOCH;L. KOPKE;U. KOTZ;H. KOWALSKI;W. KROGER;J. KRUGERS;J. LABS;A. LADAGE;B. LOHR;M. LOWE;D. LUKE;O. MANCZAK;J. S. T.;S. NICKEL;D. NOTZ;K. OHRENBERG;M. ROCO;M. ROHDE;J. ROLDAN;U. SCHNEEKLOTH;W. SCHULZ;F. SELONKE;E. STILIARIS;T. VOSS;D. WESTPHAL;G. WOLF;C. YOUNGMAN;H. J. GRABOSCH;A. LEICH;A. MEYER;C. RETHFELDT;S. SCHLENSTEDT;G. BARBAGLI;P. PELFER;G. ANZIVINO;G. MACCARRONE;S. DEPASQUALE;S. QIAN;L. VOTANO;A. BAMBERGER;A. FREIDHOF;T. POSER;S. SOLDNERREMBOLD;J. SCHROEDER;G. THEISEN;T. TREFZGER;N. H. BROOK;P. J. BUSSEY;A. T. DOYLE;I. FLECK;V. A. JAMIESON;D. H. SAXON;M. L. UTLEY;A. S. WILSON;A. DANNEMANN;U. HOLM;D. HORSTMANN;H. KAMMERLOCHER;B. KREBS;T. NEUMANN;R. SINKUS;K. WICK;E. BADURA;B. D. BUROW;A. FURTJES;L. HAGGE;E. LOHRMANN;J. MAINUSCH;J. MILEWSKI;M. NAKAHATA;N. PAVEL;G. POELZ;W. SCHOTT;J. TERRON;F. ZETSCHE;T. C. BACON;R. BEUSELINCK;I. BUTTERWORTH;E. GALLO;V. L. HARRIS;B. H. HUNG;K. R. LONG;D. B. MILLER;P. P. O.;A. PRINIAS;J. K. SEDGBEER;A. F. WHITFIELD;U. MALLIK;E. MCCLIMENT;M. Z. WANG;S. M. WANG;J. T. WU;Y. ZHANG;P. CLOTH;D. FILGES;S. H. AN;S. M. HONG;S. W. NAM;S. K. PARK;M. H. SUH;S. H. YON;R. IMLAY;S. KARTIK;H. J. KIM;R. R. MCNEIL;W. METCALF;V. K. NADENDLA;F. BARREIRO;G. CASES;R. GRACIANI;J. M. HERNANDEZ;L. HERVAS;L. LABARGA;J. DELPESO;J. PUGA;J. F. DETROCONIZ;F. IKRAIAM;J. K. MAYER;G. R. SMITH;F. CORRIVEAU;D. S. HANNA;J. HARTMANN;L. W. HUNG;J. N. LIM;C. G. MATTHEWS;P. M. PATEL;L. E. SINCLAIR;D. G. STAIRS;M. S. LAURENT;R. ULLMANN;G. ZACEK;V. BASHKIROV;B. A. DOLGOSHEIN;A. STIFUTKIN;D. ACOSTA;B. BYLSMA;L. S. DURKIN;K. HONSCHEID;C. LI;T. Y. LING;K. W. MCLEAN;W. N. MURRAY;I. H. PARK;T. A. ROMANOWSKI;R. SEIDLEIN;D. S. BAILEY;G. A. BLAIR;A. BYRNE;R. J. CASHMERE;A. M. COOPERSARKAR;D. DANIELS;R. C. E.;N. HARNEW;M. LANCASTER;P. E. LUFFMAN;L. LINDEMANN;J. MCFALL;C. NATH;A. QUADT;H. UIJTERWAAL;R. WALCZAK;F. F. WILSON;T. YIP;J. BULMAHN;J. M. BUTTERWORTH;R. G. FEILD;B. Y. OH;J. J. WHITEMORE;G. DAGOSTINI;M. IORI;G. MARINI;M. MATTIOLI;A. NIGRO;E. TASSI;J. C. HART;N. A. MCCUBBIN;K. PRYTZ;T. P. SHAH;T. L. SHORT;E. BARBERIS;N. CARTIGLIA;T. DUBBS;C. HEUSCH;M. VANHOOK;B. HUBBARD;W. LOCKMAN;J. T. RAHN;H. E. W.;A. SEIDEN;J. BILTZINGER;R. J. SEI
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