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The ZEUS-experiment at HERA has significantly enhanced the kinematic coverage for low Q(2) and low x inelastic e(+)p --> e(+) X scattering with an upgrade of the ZEUS-detector in 1995 which extends the acceptance for small positron scattering angles. The upgrade included the modification of the beam pipe with low mass exit windows and the installation of a small electromagnetic sampling calorimeter, the Beam Pipe Calorimeter (BPC), to explore the region in Q(2) of 0.11 less than or equal to Q(2) less than or equal to 0.65 GeV2. A shift of two rear uranium calorimeter (RCAL) modules and the small rear tracking detector (SRTD) closer to the beam together with a data sample taken with a shifted event vertex extended the Q(2) coverage of the main detector down to 0.6 GeV2. Both data sets have been used to measure the proton structure function F-2 and the total virtual photonproton gamma*p cross-section. Results are presented for 0.11 less than or equal to Q(2) less than or equal to 6.10 GeV2 and 2.10(-6) less than or equal to x less than or equal to 7.10(-4) along with a comparison to various models.
ZEUS Collaboration M., D., D., K., S., M., D., M., B., M., J. R., O.s., et al. (1997). Measurement of the proton structure function F-2 and the total gamma*p cross-section at low Q(2) and low x(407), 285-289.
Measurement of the proton structure function F-2 and the total gamma*p cross-section at low Q(2) and low x
ZEUS Collaboration M. Derrick;D. Krakauer;S. Magill;D. Mikunas;B. Musgrave;J. R. Okrasin´ ski;J. Repond;R. Stanek;R. L. Ta laga;H. Zhang Argonne National Laboratory;Argonne;IL 60439;USA p. M. C. K. Mattingly Andrews University;Berrien Springs;MI;USA F. Anselmo;P. Antonioli;G. Bari;M. Basile;L. Bellagamba;D. Boscherini;A. Bruni;G. Bruni;P. Bruni;G. Cara Romeo;G. Castellini1;L. Cifarelli2;F. Cindolo;A. Contin;M. Corradi;I. Gialas;P. Giusti;G. Iacobucci;G. Laurenti;G. Levi;A. Margotti;T. Massam;R. Nania;F. Palmonari;A. Pesci;A. Polini;G. Sartorelli;Y. Zamora Garcia3;A. Zichichi University;INFN Bologna;I. 40126 Bologna;Italy f. C. Amelung;A. Bornheim;J. Crittenden;R. Deffner;M. Eckert;L. Feld;A. Frey4;M. Geerts5;M. Grothe;H. Hartmann;K. Heinloth;L. Heinz;E. Hilger;H. P. Jakob;U. F. Katz;S. Mengel6;E. Paul;M. Pfeiffer;C.h. Rembser;D. Schramm7;J. Stamm;R. Wedemeyer Physikalisches Institut der Universita¨t Bonn;D. 53115 Bonn;Germany c. S. Campbell Robson;A. Cassidy;W. N. Cottingham;N. Dyce;B. Foster;S. George;M. E. Hayes;G. P. Heath;H. F. Heath;D. Piccioni;D. G. Roff;R. J. Tapper;R. Yoshida H. H. Wills Physics Laboratory;University of Bristol;Bristol B58 1TL;U. K. o. M. Arneodo8;R. Ayad;M. Capua;A. Garfagnini;L. Iannotti;M. Schioppa;G. Susinno Calabria University;Physics D.e.p.t. and INFN;Cosenza;Italy f. A. Caldwell9;N. Cartiglia;Z. Jing;W. Liu;J. A. Parsons;S. Ritz10;F. Sciulli;P. B. Straub;L. Wai11;S. Yang12;Q. Zhu Columbia University;Nevis Labs;Irvington on Hudson;NY 10533;USA q. P. Borzemski;J. Chwastowski;A. Eskreys;Z. Jakubowski;M. B. Przybycien´;M. Zachara;L. Zawiejski I.n.s.t. of Nuclear Physics;PL 30055 Cracow;Poland j. L. Adamczyk;B. Bednarek;K. Jelen´;D. Kisielewska;T. Kowalski;M. Przybycien´;E. Rulikowska Zare¸bska;L. Suszycki;J. Zaja¸c Faculty of Physics;Nuclear Techniques;Academy of Mining;Metallurgy;PL 30055 Cracow;Poland j. Z. Dulin´ ski;A. Kotan´ ski Jagellonian Univ;D.e.p.t. of Physics;PL 30059 Cracow;Poland k. G. Abbiendi13;L. A. T. Bauerdick;U. Behrens;H. Beier;J. K. Bienlein;G. Cases;O. Deppe;K. Desler;G. Drews;M. Flasin´ ski14;D. J. Gilkinson;C. Glasman;P. Go¨ ttlicher;J. Große Knetter;T. Haas;W. Hain;D. Hasell;H. Heßling;Y. Iga;K. F. Johnson15;P. Joos;M. Kasemann;R. Klanner;W. Koch;U. Ko¨ tz;H. Kowalski;J. Labs;A. Ladage;B. Lo¨ hr;M. Lo¨ we;D. Lu¨ ke;J. Mainusch16;O. Man´ czak;J. Milewski;T. Monteiro17;J. S. T. Ng;D. Notz;K. Ohrenberg;K. Piotrzkowski;M. Roco;M. Rohde;J. Rolda´n;U. Schneekloth;W. Schulz;F. Selonke;B. Surrow;E. Tassi;T. Voß;D. Westphal;G. Wolf;U. Wollmer;C. Youngman;W. Zeuner Deutsches Elektronen Synchrotron DESY;D. 22603 Hamburg;Germany H. J. Grabosch;MARI, Stefano Maria;18;A. Meyer;S. Schlenstedt DESY IfH Zeuthen;D. 15738 Zeuthen;Germany G. Barbagli;E. Gallo;P. Pelfer University;INFN, Florence;Italy f. G. Maccarrone;S. De Pasquale;L. Votano INFN;Laboratori Nazionali di Frascati;I. 00044 Frascati;Italy f. A. Bamberger;S. Eisenhardt;T. Trefzger19;S. Wo¨ lfle Fakulta¨t fu¨ r. Physik der Universita¨t Freiburg i. B.r.;D. 79104 Freiburg i. B.r.;Germany c. J. T. Bromley;N. H. Brook;P. J. Bussey;A. T. Doyle;D. H. Saxon;L. E. Sinclair;E. Strickland;M. L. Utley;R. Waugh;A. S. Wilson D.e.p.t. of Physics;Astronomy;University of Glasgow;Glasgow G12 8QQ;U. K. o. A. Dannemann20;U. Holm;D. Horstmann;R. Sinkus21;K. Wick Hamburg University;I. Institute of E.x.p. Physics;D. 22761 Hamburg;Germany c. B. D. Burow22;L. Hagge16;E. Lohrmann;G. Poelz;W. Schott;F. Zetsche Hamburg University;I.I. Institute of E.x.p. Physics;D. 22761 Hamburg;Germany c. T. C. Bacon;N. Bru¨ mmer;I. Butterworth;V. L. Harris;G. Howell;B. H. Y. Hung;L. Lamberti23;K. R. Long;D. B. Miller;N. Pavel;A. Prinias24;J. K. Sedgbeer;D. Sideris;A. F. Whitfield Imperial College London;High Energy Nuclear Physics Group;London SW7 2BZ;U. K. o. U. Mallik;M. Z. Wang;S. M. Wang;J. T. Wu University of Iowa;Physics;Astronomy Dept;Iowa City;IA 52242;USA p. P. Cloth;D. Filges Forschungszentrum Ju¨ lich;Institut fu¨ r. Kernphysik;D. 52405 Ju¨ lich;Germany S. H. An;G. H. Cho;B. J. Ko;S. B. Lee;S. W. Nam;H. S. Park;S. K. Park Korea University;Seoul 136 701;Korea h. S. Kartik;H. J. Kim;R. R. McNeil;W. Metcalf;V. K. Nadendla Louisiana State University;D.e.p.t. of Physics;Astronomy;Baton Rouge;LA 70803 4001;USA p. F. Barreiro;J. P. Fernandez;R. Graciani;J. M. Herna´ndez;L. Herva´s;L. Labarga;M. Martinez;J. del Peso;J. Puga;J. Terron;J. F. de Troco´ niz U.n.i.v.e.r. Auto´ noma Madrid;Depto de F´ısica Teo´ r´ıca;E. 28049 Madrid;Spain n. F. Corriveau;D. S. Hanna;J. Hartmann;L. W. Hung;J. N. Lim;C. G. Matthews25;W. N. Murray;A. Ochs;P. M. Patel;M. Riveline;D. G. Stairs;M. St Laurent;R. Ullmann;G. Zacek25 McGill University;D.e.p.t. of Physics;Montre´al;PQ H3A 2T8;Canada a;b. T. Tsurugai Meiji Gakuin University;Faculty of General Education;Yokohama 244;Japan V. Bashkirov;B. A. Dolgoshein;A. Stifutkin Moscow Engineering Physics Institute;RU 115 409 Moscow;Russia l. G. L. Bashindzhagyan26;P. F. Ermolov;L. K. Gladilin;Y.u. A. Golubkov;V. D. Kobrin;I. A. Korzhavina;V. A. Kuzmin;O. Y.u. Lukina;A. S. Proskuryakov;A. A. Savin;L. M. Shcheglova;A. N. Solomin;N. P. Zotov Moscow State University;Institute of Nuclear Physics;RU 119 899 Moscow;Russia m. M. Botje;F. Chlebana;J. Engelen;M. de Kamps;P. Kooijman;A. Kruse;A. van Sighem;H. Tiecke;W. Verkerke;J. Vossebeld;M. Vreeswijk;L. Wiggers;E. de Wolf;R. van Woudenberg27 NIKHEF;University of Amsterdam;NL 1009 DB Amsterdam;Netherlands i. D. Acosta;B. Bylsma;L. S. Durkin;J. Gilmore;C. M. Ginsburg;C. L. Kim;C. Li;T. Y. Ling;P. Nylander;I. H. Park;T. A. Romanowski28 Ohio State University;Physics Department;Columbus;OH 43210 1106;USA p. D. S. Bailey;R. J. Cashmore29;A. M. Cooper Sarkar;R. C. E. Devenish;N. Harnew;M. Lancaster30;L. Lindemann;J. D. McFall;C. Nath;V. A. Noyes24;A. Quadt;J. R. Tickner;H. Uijterwaal;R. Walczak;D. S. Waters;F. F. Wilson;T. Yip Department of Physics;University of Oxford;Oxford;U. K. o. A. Bertolin;R. Brugnera;R. Carlin;F. Dal Corso;M. De Giorgi;U. Dosselli;S. Limentani;M. Morandin;M. Posocco;L. Stanco;R. Stroili;C. Voci;F. Zuin Dipartimento di Fisica dell’ Universita;INFN;I. 35131 Padova;Italy f. J. Bulmahn;R. G. Feild31;B. Y. Oh;J. J. Whitmore Pennsylvania State University;D.e.p.t. of Physics;University Park;PA 16802;USA q. G. D’Agostini;G. Marini;A. Nigro Dipartimento di Fisica;U.n.i.v. ’La Sapienza’;INFN;I. 00185 Rome;Italy f. J. C. Hart;N. A. McCubbin;T. P. Shah Rutherford Appleton Laboratory;Chilton;Didcot OX11 0QX;U. K. o. E. Barberis;T. Dubbs;C. Heusch;M. Van Hook;W. Lockman;J. T. Rahn;H. F. W. Sadrozinski;A. Seiden;D. C. Williams University of California;Santa Cruz;CA 93106;USA p. J. Biltzinger;R. J. Seifert;O. Schwarzer;A. H. Walenta Fachbereich Physik der Universita¨t Gesamthochschule Siegen;D. 57012 Siegen;Germany c. H. Abramowicz;G. Briskin;S. Dagan32;T. Doeker32;A. Levy26 Raymond;Beverly Sackler Faculty of Exact Sciences;School of Physics;Tel Aviv University;Tel Aviv 69978;Israel e. J. I. Fleck33;M. Inuzuka;T. Ishii;M. Kuze;S. Mine;M. Nakao;I. Suzuki;K. Tokushuku;K. Umemori;S. Yamada;Y. Yamazaki Institute for Nuclear Study;University of Tokyo;Tokyo 113;Japan g. M. Chiba;R. Hamatsu;T. Hirose;K. Homma;S. Kitamura34;T. Matsushita;K. Yamauchi Tokyo Metropolitan University;D.e.p.t. of Physics;Tokyo 192 03;Japan g. R. Cirio;M. Costa;M. I. Ferrero;S. Maselli;C. Peroni;R. Sacchi;A. Solano;A. Staiano Universita di Torino;Dipartimento di Fisica Sperimentale;INFN;I. 10129 Torino;Italy f. M. Dardo II Faculty of Sciences;Torino University;INFN Alessandria;Italy f. D. C. Bailey;F. Benard;M. Brkic;C. P. Fagerstroem;G. F. Hartner;K. K. Joo;G. M. Levman;J. F. Martin;R. S. Orr;S. Polenz;C. R. Sampson;D. Simmons;R. J. Teuscher University of Toronto;D.e.p.t. of Physics;Toronto;ON M5S 1A7;Canada a. J. M. Butterworth;C. D. Catterall;T. W. Jones;P. B. Kaziewicz;J. B. Lane;R. L. Saunders;J. Shulman;M. R. Sutton University College London;Physics;Astronomy Dept;London WC1E 6BT;U. K. o. B. Lu;L. W. Mo Virginia Polytechnic Inst;State University;Physics Dept;Blacksburg;VA 24061;USA q. W. Bogusz;J. Ciborowski;J. Gajewski;G. Grzelak35;M. Kasprzak;M. Krzyz˙anowski;K. Muchorowski36;R. J. Nowak;J. M. Pawlak;T. Tymieniecka;A. K. Wro´ blewski;J. A. Zakrzewski;A. F. Z˙ arnecki Warsaw University;Institute of Experimental Physics;PL 00681 Warsaw;Poland j. M. Adamus Institute for Nuclear Studies;PL 00681 Warsaw;Poland j. C. Coldewey;Y. Eisenberg32;D. Hochman;U. Karshon32;D. Revel32;D. Zer Zion Weizmann Institute;Nuclear Physics Dept;Rehovot 76100;Israel d. W. F. Badgett;J. Breitweg;D. Chapin;R. Cross;S. Dasu;C. Foudas;R. J. Loveless;S. Mattingly;D. D. Reeder;S. Silverstein;W. H. Smith;A. Vaiciulis;M. Wodarczyk University of Wisconsin;D.e.p.t. of Physics;Madison;WI 53706;USA p. S. Bhadra;M. L. Cardy37;W. R. Frisken;M. Khakzad;W. B. Schmidke York University;D.e.p.t. of Physics;North York;Toronto ON M3J 1P3;Canada a.
1997-01-01
Abstract
The ZEUS-experiment at HERA has significantly enhanced the kinematic coverage for low Q(2) and low x inelastic e(+)p --> e(+) X scattering with an upgrade of the ZEUS-detector in 1995 which extends the acceptance for small positron scattering angles. The upgrade included the modification of the beam pipe with low mass exit windows and the installation of a small electromagnetic sampling calorimeter, the Beam Pipe Calorimeter (BPC), to explore the region in Q(2) of 0.11 less than or equal to Q(2) less than or equal to 0.65 GeV2. A shift of two rear uranium calorimeter (RCAL) modules and the small rear tracking detector (SRTD) closer to the beam together with a data sample taken with a shifted event vertex extended the Q(2) coverage of the main detector down to 0.6 GeV2. Both data sets have been used to measure the proton structure function F-2 and the total virtual photonproton gamma*p cross-section. Results are presented for 0.11 less than or equal to Q(2) less than or equal to 6.10 GeV2 and 2.10(-6) less than or equal to x less than or equal to 7.10(-4) along with a comparison to various models.
ZEUS Collaboration M., D., D., K., S., M., D., M., B., M., J. R., O.s., et al. (1997). Measurement of the proton structure function F-2 and the total gamma*p cross-section at low Q(2) and low x(407), 285-289.
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simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
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