Measurement of D*(+/-) production and the charm contribution to F-2 in deep inelastic scattering at HERA
Articolo
Data di Pubblicazione:
2000
Abstract:
The production of D*(+/-)(2010) mesons in deep inelastic scattering has been measured in the ZEUS detector at HERA using an integrated luminosity of 37 pb(-1). The decay channels D*(+) --> D(0)pi(+) (+ c.c.), with D-0 --> K(-)pi(+) or D-0 --> K(-)pi(-)pi(+)pi(+), have been used to identify the D mesons. The e(+)p cross section for inclusive D*(+/-) production with 1 < Q(2) < 600 GeV2 and 0.02 < y < 0.7 is 8.31+/-0.31(stat.)(+0.30)(-0.50) (syst.) nb in the kinematic region 1.5 < pT(D*(+/-)) < 15GeV and \eta(D*(+/-))\ < 1.5. Differential cross sections are consistent with a next-to-leading-order perturbative-QCD calculation when using charm-fragmentation models which take into account the interaction of the charm quark with the proton remnant. The observed cross section is extrapolated to the full kinematic region in pr(D*(+/-)) and eta(D*(+/-)) in order to determine the charm contribution, F-2(c (c) over bar)(x,Q(2)), to the proton structllre function. The ratio F-2(c (c) over bar)/F-2 rises from similar or equal to 10% at Q(2) similar or equal to 1.8 GeV2 to similar or equal to 30% at Q(2) similar or equal to 130 GeV2 for x values in the rarlge 10(-4) to 10(-3).
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
ZEUS; CENTRAL TRACKING DETECTOR; HEAVY-QUARK CORRELATIONS; ZEUS BARREL CALORIMETER; PARTON DISTRIBUTIONS; EP SCATTERING; ELECTROPRODUCTION; CONSTRUCTION; DESIGN; LEPTOPRODUCTION; FRAGMENTATION
Elenco autori:
J. Breitweg;S. Chekanov;M. Derrick;D. Krakauer;S. Magill;B. Musgrave;A. Pellegrino;J. Repond;R. Stanek;R. Yoshida;M. C. K.;G. Abbiendi;F. Anselmo;P. Antonioli;G. Bari;M. Basile;L. Bellagamba;D. Boscherini;A. Bruni;G. Bruni;G. C. Romeo;G. Castellini;L. Cifarelli;F. Cindolo;A. Contin;N. Coppola;H. Corradi;S. D. Pasquale;P. Giusti;G. Iacobucci;G. Laurenti;G. Levi;A. Margotti;T. Massam;R. Nania;F. Palmonari;A. Pesci;A. Polini;G. Sartorelli;Y. Z. Garcia;A. Zichichi;C. Amelung;A. Bornheim;I. Brock;K. Coboken;J. Crittenden;R. Deffner;M. Eckert;H. Hartmann;K. Heinloth;E. Hilger;H. P. Jakob;A. Kappes;U. F. Katz;R. Kerger;E. Paul;J. Rautenberg;H. Schnurbusch;A. Stifutkin;J. Tandler;A. Weber;H. Wieber;D. S. Bailey;O. Barret;W. N. Cottingham;B. Foster;G. P. Heath;H. F. Heath;J. D. McFall;D. Piccioni;J. Scott;R. J. Tapper;M. Capua;A. Mastroberardino;M. Schioppa;G. Susinno;H. Y. Jeoung;J. Y. Kim;J. H. Lee;I. T. Lim;K. J. Ma;H. Y. Pac;A. Caldwell;W. Liu;X. Liu;B. Mellado;J. A. Parsons;S. Ritz;R. Sacchi;S. Sampson;F. Sciulli;J. Chwastowski;A. Eskreys;J. Figiel;K. Klimek;K. Olkiewicz;M. B. Przybycien;P. Stopa;L. Zawiejski;L. Adamczyk;B. Bednarek;K. Jelen;D. Kisielewska;A. M. Kowal;T. Kowalski;M. Przybycien;E. Rulikowska-Zarebska;L. Suszycki;J. Zajac;Z. Dulinski;A. Kotanski;L. A. T.;U. Behrens;J. K. Bienlein;C. Burgard;K. Desler;G. Drews;A. Fox-Murphy;U. Fricke;F. Goebel;P. Gottlicher;R. Graciani;T. Haas;W. Hain;G. F. Hartner;D. Hasell;K. Hebbel;K. F. Johnson;M. Kasemann;W. Koch;U. Kotz;H. Kowalski;L. Lindemann;B. Lohr;M. Martinez;J. Milewski;M. Milite;T. Monteiro;M. Moritz;D. Notz;F. Pelucchi;M. C. Petrucci;K. Piotrzkowski;M. Rohde;P. R. B.;A. A. Savin;U. Schneekloth;O. Schwarzer;F. Selonke;M. Sievers;S. Stonjek;E. Tassi;G. Wolf;U. Wollmer;C. Youngman;W. Zeuner;B. D. Burow;C. Coldewey;H. J. Grabosch;A. L. D.;A. Meyer;K. Monig;S. Schlenstedt;P. B. Straub;G. Barbagli;E. Gallo;P. Pelfer;G. Maccarrone;L. Votano;A. Bamberger;S. Eisenhardt;P. Markun;H. Raach;S. Wolfle;N. H. Brook;P. J. Bussey;A. T. Doyle;S. W. Lee;N. Macdonald;G. J. McCance;D. H. Saxon;L. E. Sinclair;I. O. Skillicorn;E. Strickland;R. Waugh;I. Bohnet;N. Gendner;U. Holm;A. Meyer-Larsen;H. Salehi;K. Wick;A. Garfagnini;I. Gialas;L. K. Gladilin;K. Kcira;R. Klanner;E. Lohrmann;G. Poelz;F. Zetsche;T. C. Bacon;J. E. Cole;G. Howell;L. Lamberti;K. R. Long;D. B. Miller;A. Prinias;J. K. Sedgbeer;D. Sideris;A. D. Tapper;R. Walker;U. Mallik;S. M. Wang;P. Cloth;D. Filges;T. Ishii;M. Kuze;I. Suzuki;K. Tokushuku;S. Yamada;K. Yamauchi;Y. Yamazaki;S. H. Ahn;S. H. An;S. J. Hong;S. B. Lee;S. W. Nam;S. K. Park;H. Lim;I. H. Park;D. Son;F. Barreiro;J. P. Fernandez;G. Garcia;C. Glasman;J. M. Hernandez;L. Labarga;J. d. Peso;J. Puga;I. Redondo;J. Terron;F. Corriveau;D. S. Hanna;J. Hartmann;W. N. Murray;A. Ochs;S. Padhi;M. Riveline;D. G. Stairs;M. St-Laurent;M. Wing;T. Tsurugai;V. Bashkirov;B. A. Dolgoshein;G. L. Bashindzhagyan;P. F. Ermolov;Y. A. Golubkov;L. A. Khein;N. A. Korotkova;I. A. Korzhavina;V. A. Kuzmin;O. Y. Lukina;A. S. Proskuryakov;L. M. Shcheglova;A. N. Solomin;S. A. Zotkin;C. Bokel;M. Botje;N. Brummer;J. Engelen;E. Koffeman;P. Kooijman;A. v. Sighem;H. Tiecke;N. Tuning;J. J. Velthuis;W. Verkerke;J. Vossebeld;L. Wiggers;E. d. Wolf;D. Acosta;B. Bylsma;L. S. Durkin;J. Gilmore;C. M. Ginsburg;C. L. Kim;T. Y. Ling;P. Nylander;H. E. Blaikley;S. Boogert;R. J. Cashmore;A. M. Cooper-Sarkar;R. C. E.;J. K. Edmonds;J. Grosse-Knetter;N. Harnew;T. Matsushita;V. A. Noyes;A. Quadt;O. Ruske;M. R. Sutton;R. Walczak;D. S. Waters;A. Bertolin;R. Brugnera;R. Carlin;F. D. Corso;S. Dondana;U. Dosselli;S. Dusini;S. Limentani;M. Morandin;M. Posocco;L. Stanco;R. Stroili;C. Voci;L. Iannotti;B. Y. Oh;J. R. Okrasin
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