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Titolo:
Measurement of the proton structure function F-2 at very low Q(2) at HERA
Autore:
Breitweg, J; Chekanov, S; Derrick, M; Krakauer, D; Magill, S; Musgrave, B; Pellegrino, A; Repond, J; Stanek, R; Yoshida, R; Mattingly, MCK; Abbiendi, G; Anselmo, F; Antonioli, P; Bari, G; Basile, M; Bellagamba, L; Boscherini, D; Bruni, A; Bruni, G; Romeo, GC; Castellini, G; Cifarelli, L; Cindolo, F; Contin, A; Coppola, N; Corradi, M; De Pasquale, S; Giusti, P; Iacobucci, G; Laurenti, G; Levi, G; Margotti, A; Massam, T; Nania, R; Palmonari, F; Pesci, A; Polini, A; Sartorelli, G; Garcia, YZ; Zichichi, A; Amelung, C; Bornheim, A; Brock, I; Coboken, K; Crittenden, J; Deffner, R; Hartmann, H; Heinloth, K; Hilger, E; Irrgang, P; Jakob, HP; Kappes, A; Katz, UF; Kerger, R; Paul, E; Schnurbusch, H; Stifutkin, A; Tandler, J; Voss, KC; Weber, A; Wieber, H; Bailey, DS; Barret, O; Brook, NH; Foster, B; Heath, GP; Heath, HF; McFall, JD; Piccioni, D; Rodrigues, E; Scott, J; Tapper, RJ; Capua, M; Mastroberardino, A; Schioppa, M; Susinno, G; Jeoung, HY; Kim, JY; Lee, JH; Lim, IT; Ma, KJ; Pac, MY; Caldwell, A; Liu, W; Liu, X; Mellado, B; Paganis, S; Sampson, S; Schmidke, WB; Sciulli, F; Chwastowski, J; Eskreys, A; Figiel, J; Klimek, K; Olkiewicz, K; Piotrzkowski, K; Przybycien, MB; Stopa, P; Zawiejski, L; Bednarek, B; Jelen, K; Kisielewska, D; Kowal, AM; Kowalski, T; Przybycien, M; Rulikowska-Zarebska, E; Suszycki, L; Szuba, D; Kotanski, A; Bauerdick, LAT; Behrens, U; Bienlein, JK; Burgard, C; Dannheim, D; Desler, K; Drews, G; Fox-Murphy, A; Fricke, U; Goebel, F; Gottlicher, P; Graciani, R; Haas, T; Hain, W; Hartner, GF; Hasell, D; Hebbel, K; Johnson, KF; Kasemann, M; Koch, W; Kotz, U; Kowalski, H; Lindemann, L; Lohr, B; Martinez, M; Milite, M; Monteiro, T; Moritz, M; Notz, D; Pelucchi, F; Petrucci, MC; Rohde, M; Saull, PRB; Savin, AA; Schneekloth, U; Selonke, F; Sievers, M; Stonjek, S; Tassi, E; Wolf, G; Wollmer, U; Youngman, C; Zeuner, W; Coldewey, C; Viani, ALD; Meyer, A; Schlenstedt, S; Straub, PB; Barbagli, G; Gallo, E; Pelfer, P; Maccarrone, G; Votano, L; Bamberger, A; Benen, A; Eisenhardt, S; Markun, P; Raach, H; Wolfle, S; Bussey, PJ; Bell, M; Doyle, AT; Lee, SW; Lupi, A; Macdonald, N; McCance, GJ; Saxon, DH; Sinclair, LE; Skillicorn, IO; Waugh, R; Bohnet, I; Gendner, N; Holm, U; Meyer-Larsen, A; Salehi, H; Wick, K; Garfagnini, A; Gialas, I; Gladilin, LK; Kcira, D; Klanner, R; Lohrmann, E; Poelz, G; Zetsche, F; Goncalo, R; Long, KR; Miller, DB; Tapper, AD; Walker, R; Mallik, U; Cloth, P; Filges, D; Ishii, T; Kuze, M; Nagano, K; Tokushuku, K; Yamada, S; Yamazaki, Y; Ahn, SH; Lee, SB; Park, SK; Lim, H; Park, IH; Son, D; Barreiro, F; Garcia, G; Glasman, C; Gonzalez, O; Labarga, L; del Peso, J; Redondo, I; Terron, J; Barbi, M; Corriveau, F; Hanna, DS; Ochs, A; Padhi, S; Riveline, M; Stairs, DG; Wing, M; Tsurugai, T; Antonov, A; Bashkirov, V; Danilov, M; Dolgoshein, BA; Gladkov, D; Sosnovtsev, V; Suchkov, S; Dementiev, RK; Ermolov, PF; Golubkov, YA; Katkov, II; Khein, LA; Korotkova, NA; Korzhavina, IA; Kuzmin, VA; Lukina, OY; Proskuryakov, AS; Shcheglova, LM; Solomin, AN; Vlasov, NN; Zotkin, SA; Bokel, C; Botje, M; Brummer, N; Engelen, J; Grijpink, S; Koffeman, E; Kooijman, P; Schagen, S; van Sighem, A; Tiecke, H; Tuning, N; Velthuis, JJ; Vossebeld, J; Wiggers, L; de Wolf, E; Acosta, D; Bylsma, B; Durkin, LS; Gilmore, J; Ginsburg, CM; Kim, CL; Ling, TY; Boogert, S; Cooper-Sarkar, AM; Devenish, RCE; Grosse-Knetter, J; Matsushita, T; Quadt, A; Ruske, O; Sutton, MR; Walczak, R; Bertolin, A; Brugnera, R; Carlin, R; Dal Corso, F; Dosselli, U; Dusini, S; Limentani, S; Morandin, M; Posocco, M; Stanco, L; Stroili, R; Turcato, M; Voci, C; Adamczyk, L; Iannotti, L; Oh, BY; Okrasinski, JR; Toothacker, WS; Whitmore, JJ; Iga, Y; DAgostini, G; Marini, G; Nigro, A; Cormack, C; Hart, JC; McCubbin, NA; Shah, TP; Epperson, D; Heusch, C; Sadrozinski, HFW; Seiden, A; Wichmann, R; Williams, DC; Pavel, N; Abramowicz, H; Dagan, S; Kananov, S; Kreisel, A; Levy, A; Abe, T; Fusayasu, T; Umemori, K; Yamashita, T; Hamatsu, R; Hirose, T; Inuzuka, M; Kitamura, S; Nishimura, T; Arneodo, M; Cartiglia, N; Cirio, R; Costa, M; Ferrero, MI; Maselli, S; Monaco, V; Peroni, C; Ruspa, M; Sacchi, R; Solano, A; Staiano, A; Dardo, M; Bailey, DC; Fagerstroem, CP; Galea, R; Koop, T; Levman, GM; Martin, JF; Orr, RS; Polenz, S; Sabetfakhri, A; Simmons, D; Butterworth, JM; Catterall, CD; Hayes, ME; Heaphy, EA; Jones, TW; Lane, JB; West, BJ; Ciborowski, J; Ciesielski, R; Grzelak, G; Nowak, RJ; Pawlak, JM; Pawlak, R; Smalska, B; Tymieniecka, T; Wroblewski, AK; Zakrzewski, JA; Zarnecki, AF; Adamus, M; Gadaj, T; Deppe, O; Eisenberg, Y; Hochman, D; Karshon, U; Badgett, WF; Chapin, D; Cross, R; Foudas, C; Mattingly, S; Reeder, DD; Smith, WH; Vaiciulis, A; Wildschek, T; Wodarczyk, M; Deshpande, A; Dhawan, S; Hughes, VW; Bhadra, S; Catterall, C; Cole, JE; Frisken, WR; Hall-Wilton, R; Khakzad, M; Menary, S;
Indirizzi:
Argonne Natl Lab, Argonne, IL 60439 USA Argonne Natl Lab Argonne IL USA 60439 nne Natl Lab, Argonne, IL 60439 USA Univ Bologna, Bologna, Italy Univ Bologna Bologna ItalyUniv Bologna, Bologna, Italy Ist Nazl Fis Nucl, I-40126 Bologna, Italy Ist Nazl Fis Nucl Bologna Italy I-40126 Fis Nucl, I-40126 Bologna, Italy Univ Bonn, Inst Physiol, D-5300 Bonn, Germany Univ Bonn Bonn Germany D-5300 v Bonn, Inst Physiol, D-5300 Bonn, Germany Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England Univ Bristol Bristol Avon England BS8 1TL Bristol BS8 1TL, Avon, England Univ Calabria, Dept Phys, I-87036 Cosenza, Italy Univ Calabria Cosenza Italy I-87036 a, Dept Phys, I-87036 Cosenza, Italy Ist Nazl Fis Nucl, I-87036 Cosenza, Italy Ist Nazl Fis Nucl Cosenza Italy I-87036 Fis Nucl, I-87036 Cosenza, Italy Chonnam Natl Univ, Kwangju, South Korea Chonnam Natl Univ Kwangju South Korea m Natl Univ, Kwangju, South Korea Columbia Univ, Nevis Labs, Irvington On Hudson, NY USA Columbia Univ Irvington On Hudson NY USA bs, Irvington On Hudson, NY USA Inst Nucl Phys, Krakow, Poland Inst Nucl Phys Krakow PolandInst Nucl Phys, Krakow, Poland Acad Min & Met, Fac Phys & Nucl Tech, Krakow, Poland Acad Min & Met Krakow Poland Met, Fac Phys & Nucl Tech, Krakow, Poland Jagiellonian Univ, Krakow, Poland Jagiellonian Univ Krakow PolandJagiellonian Univ, Krakow, Poland DESY, D-2000 Hamburg, Germany DESY Hamburg Germany D-2000DESY, D-2000 Hamburg, Germany DESY, Zeuthen, Germany DESY Zeuthen GermanyDESY, Zeuthen, Germany Univ Florence, Florence, Italy Univ Florence Florence ItalyUniv Florence, Florence, Italy Ist Nazl Fis Nucl, I-50125 Florence, Italy Ist Nazl Fis Nucl Florence Italy I-50125 s Nucl, I-50125 Florence, Italy Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy Ist Nazl FisNucl Frascati Italy I-00044 ascati, I-00044 Frascati, Italy Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany Univ Freiburg FreiburgGermany D-7800 Fak Phys, D-7800 Freiburg, Germany Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland Univ Glasgow Glasgow Lanark Scotland & Astron, Glasgow, Lanark, Scotland Univ Hamburg, Inst Exp Phys 1, Hamburg, Germany Univ Hamburg Hamburg Germany Hamburg, Inst Exp Phys 1, Hamburg, Germany Univ Hamburg, Inst Expt Phys 2, D-2000 Hamburg, Germany Univ Hamburg Hamburg Germany D-2000 Expt Phys 2, D-2000 Hamburg, Germany Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England Univ London Imperial Coll Sci Technol & Med London Englanddon, England Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA Univ Iowa Iowa City IA USA 52242 t Phys & Astron, Iowa City, IA 52242 USA KFA Julich GmbH, Forschungszentrum, Inst Kernphys, D-5170 Julich, Germany KFA Julich GmbH Julich Germany D-5170 t Kernphys, D-5170 Julich, Germany KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki, Japan KEK Tsukuba Ibaraki Japan rticle & Nucl Studies, Tsukuba, Ibaraki, Japan Korea Univ, Seoul 136701, South Korea Korea Univ Seoul South Korea 136701 orea Univ, Seoul 136701, South Korea Kyungpook Natl Univ, Taegu 702701, South Korea Kyungpook Natl Univ TaeguSouth Korea 702701 , Taegu 702701, South Korea Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain Univ Autonoma Madrid Madrid Spain Madrid, Dept Fis Teor, Madrid, Spain McGill Univ, Dept Phys, Montreal, PQ H3A 2T5, Canada McGill Univ MontrealPQ Canada H3A 2T5 Phys, Montreal, PQ H3A 2T5, Canada Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan Meiji Gakuin Univ Yokohama Kanagawa Japan duc, Yokohama, Kanagawa, Japan Moscow Phys Engn Inst, Moscow, Russia Moscow Phys Engn Inst Moscow Russia scow Phys Engn Inst, Moscow, Russia Moscow State Univ, Inst Nucl Phys, Moscow, Russia Moscow State Univ Moscow Russia te Univ, Inst Nucl Phys, Moscow, Russia NIKHEF H, NL-1009 DB Amsterdam, Netherlands NIKHEF H Amsterdam Netherlands NL-1009 DB 1009 DB Amsterdam, Netherlands Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands Univ Amsterdam Amsterdam Netherlands NL-1009 DB B Amsterdam, Netherlands Ohio State Univ, Dept Phys, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 , Dept Phys, Columbus, OH 43210 USA Univ Padua, Dipartimento Fis, Padua, Italy Univ Padua Padua ItalyUniv Padua, Dipartimento Fis, Padua, Italy Ist Nazl Fis Nucl, Padua, Italy Ist Nazl Fis Nucl Padua ItalyIst Nazl Fis Nucl, Padua, Italy Penn State Univ, Dept Phys, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 s, University Pk, PA 16802 USA Polytech Univ, Sagamihara, Kanagawa, Japan Polytech Univ Sagamihara Kanagawa Japan niv, Sagamihara, Kanagawa, Japan Univ Rome La Sapienza, Dipartimento Fis, I-00185 Rome, Italy Univ Rome La Sapienza Rome Italy I-00185 imento Fis, I-00185 Rome, Italy Ist Nazl Fis Nucl, I-00185 Rome, Italy Ist Nazl Fis Nucl Rome Italy I-00185 Nazl Fis Nucl, I-00185 Rome, Italy Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England Rutherford Appleton Lab Didcot Oxon England OX11 0QX 1 0QX, Oxon, England Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA Univ Calif Santa Cruz Santa Cruz CA USA 95064 z, Santa Cruz, CA 95064 USA Univ Gesamthsch Siegen, Fachbereich Phys, D-5900 Siegen, Germany Univ Gesamthsch Siegen Siegen Germany D-5900 hys, D-5900 Siegen, Germany Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv,Israel Tel Aviv Univ Tel Aviv Israel IL-69978 act Sci, IL-69978 Tel Aviv,Israel Univ Tokyo, Dept Phys, Tokyo 113, Japan Univ Tokyo Tokyo Japan 113Univ Tokyo, Dept Phys, Tokyo 113, Japan Tokyo Metropolitan Univ, Dept Phys, Tokyo, Japan Tokyo Metropolitan Univ Tokyo Japan litan Univ, Dept Phys, Tokyo, Japan Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy Univ Turin TurinItaly rin, Dipartimento Fis Sperimentale, Turin, Italy Ist Nazl Fis Nucl, I-10125 Turin, Italy Ist Nazl Fis Nucl Turin Italy I-10125 azl Fis Nucl, I-10125 Turin, Italy Univ Turin, Fac Sci 2, Alessandria, Italy Univ Turin Alessandria ItalyUniv Turin, Fac Sci 2, Alessandria, Italy Ist Nazl Fis Nucl, Alessandria, Italy Ist Nazl Fis Nucl Alessandria Italy t Nazl Fis Nucl, Alessandria, Italy Univ Toronto, Dept Phys, Toronto, ON, Canada Univ Toronto Toronto ON Canada v Toronto, Dept Phys, Toronto, ON, Canada Univ Coll London, Dept Phys & Astron, London, England Univ Coll London London England on, Dept Phys & Astron, London, England Warsaw Univ, Inst Phys Expt, Warsaw, Poland Warsaw Univ Warsaw PolandWarsaw Univ, Inst Phys Expt, Warsaw, Poland Inst Nucl Studies, PL-00681 Warsaw, Poland Inst Nucl Studies Warsaw Poland PL-00681 tudies, PL-00681 Warsaw, Poland Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel Weizmann Inst Sci Rehovot Israel IL-76100 Phys, IL-76100 Rehovot, Israel Univ Wisconsin, Dept Phys, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 sin, Dept Phys, Madison, WI 53706 USA Yale Univ, Dept Phys, New Haven, CT 06520 USA Yale Univ New Haven CT USA 06520 Univ, Dept Phys, New Haven, CT 06520 USA York Univ, Dept Phys, Toronto, ON M3J 2R7, Canada York Univ Toronto ON Canada M3J 2R7 ept Phys, Toronto, ON M3J 2R7, Canada Univ Hamburg, Hamburg, Germany Univ Hamburg Hamburg GermanyUniv Hamburg, Hamburg, Germany
Titolo Testata:
PHYSICS LETTERS B
fascicolo: 1-2, volume: 487, anno: 2000,
pagine: 53 - 73
SICI:
0370-2693(20000810)487:1-2<53:MOTPSF>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEEP-INELASTIC SCATTERING; LUND MONTE-CARLO; LOW-X; JET FRAGMENTATION; E+E-PHYSICS; GENERATOR; ENERGY; MODEL; QCD; EP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Breitweg, J Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA Argonne Natl Lab 9700 S Cass Ave Argonne IL USA 60439 0439 USA
Citazione:
J. Breitweg et al., "Measurement of the proton structure function F-2 at very low Q(2) at HERA", PHYS LETT B, 487(1-2), 2000, pp. 53-73

Abstract

A measurement of the proton structure function F-2(x, Q(2)) is presented in the kinematic range 0.045 GeV2 < Q(2) < 0.65 GeV2 and 6 . 10(-7) < x < 1 . 10(-3). The results were obtained using a data sample corresponding to anintegrated luminosity of 3.9 pb(-1) in e(+)p reactions recorded with the ZEUS detector at HERA. Information from a silicon-strip tracking detector, installed in front of the small electromagnetic calorimeter used to measure the energy of the final-state positron at small scattering angles, togetherwith an enhanced simulation of the hadronic final state, has permitted theextension of the kinematic range beyond that of previous measurements. Theuncertainties in F-2 are typically less than 4%. At the low Q(2) values ofthe present measurement, the rise of F-2 at low x is slower than observed in HERA data at higher Q(2) and can be described by Regge theory with a constant logarithmic slope partial derivative lnF(2)/partial derivative ln(1/x). The dependence of F-2 on Q(2) is stronger than at higher Q(2) values, approaching, at the lowest Q(2) values of this measurement, a region where F-2 becomes nearly proportional to Q(2). (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 26/11/20 alle ore 20:28:06