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1. A-380 Concordance of Truvian's Point-of-Care Blood Testing Analyzer to Central Laboratory Testing

Author

Higgins, R L, primary, Adams, M, additional, Arndt, D, additional, Desmond, P, additional, Fernandez, B, additional, Grabarek, G, additional, Haase, N, additional, Kim, J, additional, Krupa, R, additional, Mina, G, additional, Morgan, R, additional, Poland, J, additional, Reed, G, additional, Richardson, R, additional, Schroeder, A, additional, Lee, F, additional, and Marrinucci, D, additional

Published
2023
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5. Registration of ‘NW13493’ hard white winter wheat

Author

Baenziger, P. S., primary, Frels, K. A., additional, Boehm,, J., additional, Belamkar, V., additional, Rose, D. J., additional, Xu, L., additional, Finnie, S. M., additional, Wegulo, S. N., additional, Regassa, T., additional, Easterly, A. C., additional, Creech, C. F., additional, Santra, D. K., additional, Klein, R. N., additional, Jin, Y., additional, Kolmer, J., additional, Chen, M.‐S., additional, Bowden, R. L., additional, Guttieri, M. J., additional, Bai, G., additional, Salah, I. El‐Basyoni, additional, Masterson, S. D., additional, and Poland, J., additional

Published
2022
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6. Registration of LCS ‘Valiant’ hard red winter wheat

Author

Baenziger, P. S., primary, Masterson, S. D., additional, Boehm, J. D., additional, Belamkar, V., additional, Barnett, M. D., additional, Rose, D. J., additional, Xu, L., additional, Wegulo, S. N., additional, Regassa, T., additional, Easterly, A. C., additional, Creech, C. F., additional, Santra, D. K., additional, Kruger, G. R., additional, Hergert, G. W., additional, Klein, R. N., additional, Jin, Y., additional, Kolmer, J., additional, Chen, M.‐S., additional, Hein, G. L., additional, Bowden, R. L., additional, Guttieri, M. J., additional, Bai, G., additional, Salah, I. El‐Basyoni, additional, and Poland, J., additional

Published
2022
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7. Registration of ‘Epoch’ hard red winter wheat

Author

Baenziger, P. S., primary, Frels, K. A., additional, Boehm, J., additional, Belamkar, V., additional, Rose, D. J., additional, Xu, L., additional, Wegulo, S. N., additional, Regassa, T., additional, Easterly, A. C., additional, Creech, C. F., additional, Santra, D. K., additional, Klein, R. N., additional, Jin, Y., additional, Kolmer, J., additional, Chen, M.‐S., additional, Guttieri, M. J., additional, Bai, G., additional, El‐Basyoni Salah, I., additional, Masterson, S. D., additional, and Poland, J., additional

Published
2022
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13. Registration of ‘NW13493’ hard white winter wheat

Author

Baenziger, P. S., Frels, K. A., Boehm, J., Belamkar, V., Rose, D. J., Xu, L., Finnie, S. M., Wegulo, S. N., Regassa, T., Easterly, A. C., Creech, C. F., Santra, D. K., Klein, R. N., Jin, Y., Kolmer, J., Chen, M.‐S., Bowden, R. L., Guttieri, M. J., Bai, G., Salah, I. El‐Basyoni, Masterson, S. D., and Poland, J.

Abstract

Historically, wheat (Triticum aestivumL.) cultivars developed by the cooperative University of Nebraska–USDA‐ARS wheat improvement project were hard red winter wheat. With the expanding hard white wheat market, there is a greater emphasis on developing hard white winter wheat lines adapted to the Great Plains. ‘NW13493’ (tested as NW13493) (Reg. no. CV‐1197, PI 699380) was selected for its white kernels, agronomic performance, relevant disease resistances, and end‐use quality and is adapted to the central Great Plains. NW13493 was licensed to Bay State Milling Company on the basis of its superior agronomic and end‐use quality performance and also the need to ensure hard white wheat growers have a known market for their grain. NW13493 hard white winter wheat was released in February 2021 by the developing institutions and the licensee. NW13493 was a selection in 2013 from the cross ‘SD98W175‐1’/‘NW03666’, which was made in 2007. The pedigree of SD98W175‐1 is ‘KS84273BB‐10’/‘KSSB110‐9’//’KS831374‐141B’/‘YE1110’/3/ ‘KS82W418’/‘Stephens’ and the pedigree of NW03666 is ‘N94S097KS’/‘NE93459’. The F1generation was grown in the greenhouse in 2008, and the F2to F3generations were advanced as bulks at Mead, NE, in 2009–2010. NW13493 was evaluated in replicated trials beginning in 2014. It has excellent winter survival and agronomic performance, acceptable disease reactions to many of the common diseases in its target area, and good end‐use quality for bread making. NW13493 is a new white wheat cultivar adapted to the upper Great Plains.NW13493 has excellent agronomic performance and good disease resistance.The end‐use quality of NW13493 is very good, and it has been licensed to Bay State Milling Company.

Published
2023
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14. Registration of LCS ‘Valiant’ hard red winter wheat

Author

Baenziger, P. S., Masterson, S. D., Boehm, J. D., Belamkar, V., Barnett, M. D., Rose, D. J., Xu, L., Wegulo, S. N., Regassa, T., Easterly, A. C., Creech, C. F., Santra, D. K., Kruger, G. R., Hergert, G. W., Klein, R. N., Jin, Y., Kolmer, J., Chen, M.‐S., Hein, G. L., Bowden, R. L., Guttieri, M. J., Bai, G., Salah, I. El‐Basyoni, and Poland, J.

Abstract

Historically cultivars developed jointly by the University of Nebraska‐Lincoln and USDA‐ARS wheat (Triticum aestivumL.) improvement project tend to be late and better adapted to the northern Great Plains. LCS ‘Valiant’ (Reg. no. CV‐1196, PI 693223; tested as NE10478‐1) was released based on the merits of its earliness, agronomic performance, relevant disease resistances, and end‐use quality characteristics and its adaptation to the central Great Plains. As such, the line was licensed to Limagrain Cereal Seeds for their ability to market outside of Nebraska. LCS Valiant hard red winter wheat was released in March 2020 by the developing institutions and the licensee. NE10478‐1 was a selection in 2011 for uniformity and grain yield from NE10478, which was derived from the cross NI03418/‘Camelot’. The pedigree of NI03418 is W91‐248/NE95544 (=McVey 78015/NE88521)//‘Thunderbird’. The final cross of NE10478 was made in 2004. The F1generation was grown in Yuma, AZ, in 2005, and the F2to F3generations were advanced as bulks at Mead, NE, in 2006–2007 or sent for Hessian fly resistance screening by the USDA. In 2007, single F3‐derived F4rows were planted for selection. There was no further selection in NE10478 other than to remove off‐types thereafter until 2011 when heads were selected to increase uniformity. LCS Valiant was evaluated in replicated trials thereafter. It has excellent winter survival, acceptable reactions to many of the common diseases in its target area, and good end‐use quality for bread making. Valiant is an early hard red winter wheat adapted to the central Great Plains for dryland production. Valiant has excellent winter survival and stem rust resistance and good Hessian fly resistance. The end‐use quality for bread making of Valiant is very good.

Published
2023
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18. Improved accuracy of high-throughput phenotyping from unmanned aerial systems by extracting traits directly from orthorectified images

Author

WANG, X., SILVA, P., BELLO, N.M., SINGH, D., EVERS, B., SINGH, R.P., and POLAND, J.

Subjects
NORMALIZED DIFFERENCE VEGETATION INDEX, CANOPY TEMPERATURE, WHEAT, GROUND COVER, HIGH-THROUGHPUT PHENOTYPING, UNMANNED AERIAL SYSTEMS, TRIGO
Abstract

The development of high-throughput genotyping and phenotyping has provided access to many tools to accelerate plant breeding programs. Unmanned Aerial Systems (UAS)-based remote sensing is being broadly implemented for field-based highthroughput phenotyping due to its low cost and the capacity to rapidly cover large breeding populations. The Structure-from-Motion photogrammetry processes aerialimages taken from multiple perspectives over a field to an orthomosaic photo of a complete field experiment, allowing spectral or morphological trait extraction from the canopy surface for each individual field plot. However, some phenotypic information observable in each raw aerial image seems to be lost to the orthomosaic photo,probably due to photogrammetry processes such as pixel merging and blending. To formally assess this, we introduced a set of image processing methods to extract phenotypes from orthorectified raw aerial images and compared them to the negative control of extracting the same traits from processed orthomosaic images. We predict that standard measures of accuracy in terms of the broad-sense heritability of the remote sensing spectral traits will be higher using the orthorectified photos than with the orthomosaic image. Using three case studies, we therefore compared the broadsense heritability of phenotypes in wheat breeding nurseries including, (1) canopy temperature from thermal imaging, (2) canopy normalized difference vegetation index (NDVI), and (3) early-stage ground cover from multispectral imaging. We evaluated heritability estimates of these phenotypes extracted from multiple orthorectified aerial images via four statistical models and compared the results with heritability estimates of these phenotypes extracted from a single orthomosaic image. Our results indicate that extracting traits directly from multiple orthorectified aerial images yielded increased estimates of heritability for all three phenotypes through proper modeling, compared to estimation using traits extracted from the orthomosaic image. In summary, the image processing methods demonstrated in this study have the potential to improve the quality of the plant trait extracted from high-throughput imaging. This, in turn, can enable breeders to utilize phenomics technologies more effectively for improved selection.

Published
2020

24. Portable Software For Numerically Controlled Machining

Author

Poland, J and Premack, T

Subjects
Mathematics And Information Sciences
Abstract

P-APT, Portable APT, is revised version of APT written to conform to FORTRAN 77 standard. Machine-dependent code replaced or isolated and documented.

Published
1994

29. Jet shapes at HERA

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. 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H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Abstract

The shape of jets produced in quasi-real photon-proton interactions and deep inelastic positron-proton scattering (DIS) at high Q(2) (Q(2) > 100 GeV2) has been measured with the ZEUS detector at HERA. Jets with transverse energies E-T(jet) > 14 GeV and pseudorapidities (eta(jet)) in the range -1 < eta(jet) < 2 are searched for using a cone algorithm in the ep-laboratory frame in the eta - phi plane with a cone radius of one unit. The jet shape broadens as eta(jet) increases and narrows as E-T(jet) increases. Next-to-leading order QCD calculations for inclusive jet photoproduction provide predictions for the jet shapes at the parton level which are found to be consistent with the measurements. The measured jet shapes in neutral current DIS are compared to those in photon-proton collisions and are found to be narrower. The measured jet shapes in DIS are found to be narrower than those in collisions, and are similar to those in e(+)e(-) interactions.

Published
1997

30. High Q(2) events in ep collisions

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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. 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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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. 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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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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. 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H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Abstract

Using the ZEUS detector at HERA, we have studied the reaction e(+) p --> e(+) X for Q(2) > 5000 GeV2 with a 20.1 pb(-1) data sample collected during the years 1994 to 1996. For Q(2) below 15000 GeV2, the data are in good agreement with Standard Model expectations. For Q(2) > 35000 GeV2, two events are observed while 0.145 +/- 0.013 events are expected. For x > 0.55 and y > 0.25, four events are observed where 0.91 +/- 0.08 events are expected. The observed excess above Standard Model expectations is particularly interesting because it occurs in a previously unexplored kinematic region.

Published
1997

31. Leading baryons at low x(L) in DIS and photoproduction at ZEUS

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Abstract

Results obtained by the ZEUS collaboration on leading baryon production in the proton fragmentation region are presented. The reaction gamma p --> NX, with N a proton or a neutron, is examined both at low and high photon virtuality.

Published
1997

32. Forward transverse energy flow and forward jets at low x

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Abstract

Transverse energy flow and forward jet cross sections at low values of x(Bj) are measured with the ZEUS detector at HERA in order to study the underlying parton dynamics (DGLAP versus BFKL). The energy how has been compared to different model simulations, but hadronization effects are too large to draw a firm conclusion. The measured jet cross section for 10(-4) < x(Bj) < 5.10(-3) is for the lower x(Bj)-bins larger than that of NLO QCD DGLAP calculations but lies still below a more qualitative BFKL prediction.

Published
1997

33. Measurement of the proton structure function F-2 and the total gamma*p cross-section at low Q(2) and low x

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

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.

Published
1997

34. QCD fits to ZEUS and fixed target structure function data

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Abstract

Preliminary results are presented on the gluon density at low x obtained from a QCD analysis of ZEUS 1994 F-2 structure function data combined with those from NMC. Also given are estimates of the experimental error on the e(+) p NC Born cross section at large x and Q(2). This estimate is obtained from propagation of the statistical and systematic errors on fixed target structure functions.

Published
1997

35. F-2(D(3)) measurements at ZEUS

Author

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, 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, 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, S. M. Mari18, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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. ZEUS Collaboration M. Derrick, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, S. M., Mari18, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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. ZEUS Collaboration M., Derrick, Mari, Stefano Maria, T., Tymieniecka, A. K., Wro´ blewski, J. A., Zakrzewski, A. F., Z˙ arnecki Warsaw University, Institute of Experimental, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Abstract

Results on the diffractive structure function F-2(D(3)) in deep inelastic neutral current positron-proton scattering (DIS) have been obtained by the ZEUS collaboration using two different methods. Diffractive interactions are selected by either requiring a small, not exponentially suppressed invariant hadronic mass M-X in the main detector or by detecting a fast proton in the ZEUS leading proton spectrometer (LPS). The results of the two methods are compared.

Published
1997

36. Measurement of dijets in DIS and comparison to NLO calculations

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Abstract

We report a measurement of the dijet production cross section in neutral current deep inelastic scattering with the ZEUS detector at the HERA ep collider. Dijet events are identified with the cone algorithm and the results are compared to next-to-leading order perturbative QCD calculations. The systematic uncertainties of both the measurement and the calculation we discussed.

Published
1997

37. Searches at HERA for excited fermions, contact interactions, a heavy neutrino, and: a HERA excess?

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Subjects
Condensed Matter::Quantum Gases, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract

Results are presented on a number of searches for new physics in ep collisions at HERA using the ZEUS and HI detectors. Limits are presented on the production of elicited fermions, contact interactions, as well as a heavy right handed neutrino and W-R boson. Also presented are ZEUS results on the excess of events at high x and Q(2).

Published
1997

38. Event shape analysis of multihadronic final states in deep inelastic rapidity gap events at HERA

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Subjects
High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract

A global event shape analysis of the multihadronic final states observed in deep inelastic scattering (DIS) with a large forward rapidity gap (LRG) is performed in the range Q(2) greater than or equal to 5 GeV2, 160 GeV less than or equal to W less than or equal to 250 GeV and eta(max) less than or equal to 1.8. Particular emphasis is paid to the dependence of these variables, measured in the gamma*-pomeron rest frame, upon M-X, the mass of the hadronic final state. With increasing M-X the multihadronic final states become planar. The broadening effects exhibited by the data can be described by including a gluon density in models where the pomeron has a partonic structure or alternatively by considering a direct coupling of the pomeron to quark and gluon pairs.

Published
1997

39. Diffractive measurements from ZEUS

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Subjects
High Energy Physics::Phenomenology, Physics::Optics, High Energy Physics::Experiment, Computer Science::Cryptography and Security
Abstract

Recent results on diffraction from the ZEUS Collaboration at HERA are presented. Properties of the diffractive photon dissociation in photoproduction and deep inelastic scattering were studied and the intercept of the pomeron, alpha(IP)(0), was inferred.

Published
1997

40. Diffractive production of charm and jets at HERA

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Abstract

Measurements are presented of dijet cross sections in diffractive photoproduction and of D*(+/-) production in diffractive deep inelastic scattering at HERA. A combined QCD analysis of the diffractive dijet cross sections and diffractive structure function results leads to a picture in which the pomeron has a substantial gluon component with a hard momentum spectrum.

Published
1997

41. Fragmentation functions at ZEUS

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Abstract

The scaled momentum spectra of final state charged hadrons produced in Deep Inelastic Scattering in the ranges 10 < Q(2) < 1280 GeV2 and 6 . 10(-4) < x(Bjorken) < 5 . 10(-2) have been measured in the current region of the Breit frame using the ZEUS detector. The evolution with Q(2) of the scaled momentum, x(p) = 2p(Breit)/Q, has been investigated and preliminary results are presented which show evidence for scaling violations and support for the universality of quark fragmentation.

Published
1997

42. D* and J/psi inelastic photoproduction at HERA

Author

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, 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, 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, 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, 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, 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, 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, University Park, PA 16802, USA q. G. D’Agostini, G. Marini, A. Nigro Dipartimento di Fisica, U.n.i.v. ’La Sapienza’, 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, 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, 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, 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, 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, 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, Madison, WI 53706, USA p. S. Bhadra, M. L. Cardy37, W. R. Frisken, M. Khakzad, W. B. Schmidke York University, North York, Toronto ON M3J 1P3, Canada a., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, D., Mikuna, 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, Spring, 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., Giala, 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, Rembser, C. h., 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., Haye, 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, and INFN, Physics D. e. p. t., Cosenza, Italy f. A., Caldwell9, N., Cartiglia, Z., Jing, W., Liu, J. A., Parson, S., Ritz10, F., Sciulli, P. B., Straub, L., Wai11, S., Yang12, Q., Zhu Columbia University, Nevis, Lab, Irvington on, Hudson, Ny, 10533, USA q. P., Borzemski, J., Chwastowski, A., Eskrey, Z., Jakubowski, M. B., Przybycien´, M., Zachara, of Nuclear Physics, L. Zawiejski I. n. s. t., 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 Physic, Nuclear, Technique, Academy of, Mining, Metallurgy, Poland j. Z., Dulin´ ski, A., Kotan´ ski Jagellonian Univ, of Physics, D. e. p. t., PL 30059, Cracow, Poland k. G., Abbiendi13, L. A. T., Bauerdick, U., Behren, H., Beier, J. K., Bienlein, G., Case, O., Deppe, K., Desler, G., Drew, M., Flasin´ ski14, D. J., Gilkinson, C., Glasman, P., Go¨ ttlicher, J., Große Knetter, T., Haa, W., Hain, D., Hasell, H., Heßling, Y., Iga, K. F., Johnson15, P., Joo, M., Kasemann, R., Klanner, W., Koch, U., Ko¨ tz, H., Kowalski, J., Lab, 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, 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, of Physics, A. S. Wilson D. e. p. t., Astronomy, University of, Glasgow, Glasgow G12, 8qq, U. K. o. A., Dannemann20, U., Holm, D., Horstmann, R., Sinkus21, K., Wick Hamburg University, Physics, I. Institute of E. x. p., D., 22761 Hamburg, Germany c. B. D., Burow22, L., Hagge16, E., Lohrmann, G., Poelz, W., Schott, F., Zetsche Hamburg University, Physics, I. I. Institute of E. x. p., Germany c. T. C., Bacon, N., Bru¨ mmer, I., Butterworth, V. L., Harri, G., Howell, B. H. Y., Hung, L., Lamberti23, K. R., Long, D. B., Miller, N., Pavel, A., Prinias24, J. K., Sedgbeer, D., Sideri, 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, Baton, Rouge, LA 70803, 4001, USA p. F., Barreiro, J. P., Fernandez, R., Graciani, J. M., Herna´ndez, L., Herva´, L., Labarga, M., Martinez, J., del Peso, J., Puga, J., Terron, Auto´ noma Madrid, J. F. de Troco´ niz U. n. i. v. e. r., 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., Och, P. M., Patel, M., Riveline, D. G., Stair, M., St Laurent, R., Ullmann, G., Zacek25 McGill University, 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, Golubkov, Y. u. A., V. D., Kobrin, I. A., Korzhavina, V. A., Kuzmin, Lukina, O. Y. u., A. S., Proskuryakov, A. A., Savin, L. M., Shcheglova, A. N., Solomin, N. P., Zotov Moscow State University, Institute of Nuclear, Physic, RU 119 899, Moscow, Russia m. M., Botje, F., Chlebana, J., Engelen, M., de Kamp, P., Kooijman, A., Kruse, A., van Sighem, H., Tiecke, W., Verkerke, J., Vossebeld, M., Vreeswijk, L., Wigger, 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., Water, F. F., Wilson, T., Yip Department of Physic, 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, University, Park, Pa, 16802, USA q. G., D’Agostini, G., Marini, A., Nigro Dipartimento di Fisica, ’La Sapienza’, U. n. i. v., 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., Barberi, T., Dubb, 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, Science, School of, Physic, 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, 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, I., 10129 Torino, Italy f. M., Dardo II Faculty of Science, 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., Simmon, R. J., Teuscher University of Toronto, Toronto, ON M5S, 1a7, Canada a. J. M., Butterworth, C. D., Catterall, T. W., Jone, P. B., Kaziewicz, J. B., Lane, R. L., Saunder, J., Shulman, M. R., Sutton University College London, 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, Physic, PL 00681, Warsaw, Poland j. M., Adamus Institute for Nuclear Studie, 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., Cro, S., Dasu, C., Fouda, R. J., Lovele, S., Mattingly, D. D., Reeder, S., Silverstein, W. H., Smith, A., Vaiciuli, M., Wodarczyk University of Wisconsin, Madison, Wi, 53706, USA p. S., Bhadra, M. L., Cardy37, W. R., Frisken, M., Khakzad, W. B., Schmidke York University, North, York, Toronto ON M3J, 1p3, and Canada, A.

Subjects
Physics::Instrumentation and Detectors, Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract

Cross sections of D* and J/Psi inelastic photoproduction were measured by the ZEUS detector at HERA collider. Comparisons of the data with calculations in NLO pQCD and SHA QCD approaches were made.

Published
1997

43. Ancient hybridizations among the ancestral genomes of bread wheat

Author

Marcussen, T., Sandve, S., Heier, L., Spannagl, M., Pfeifer, M., Jakobsen, K., Wulff, B., Steuernagel, B., Mayer, K., Olsen, O.-A., Rogers, J., Dole el, J., Pozniak, C., Eversole, K., Feuillet, C., Gill, B., Friebe, B., Lukaszewski, A., Sourdille, Pierre, Endo, T., Kubalakova, M., ihalikova, J., Dubska, Z., Vrana, J., perkova, R., imkova, H., Febrer, M., Clissold, L., McLay, K., Singh, K., Chhuneja, P., Singh, N., Khurana, J., Akhunov, E., Choulet, F., Alberti, A., Barbe, Valérie, Wincker, P., Kanamori, H., Kobayashi, F., Itoh, T., Matsumoto, T., Sakai, H., Tanaka, T., Wu, J., Ogihara, Y., Handa, H., Maclachlan, P., Sharpe, A., Klassen, D., Edwards, D., Batley, J., Lien, S., Caccamo, M., Ayling, S., Ramirez-Gonzalez, R., Clavijo, B., Wright, J., Martis, M., Mascher, M., Chapman, J., Poland, J., Scholz, U., Barry, K., Waugh, R., Rokhsar, D., Muehlbauer, G., Stein, N., Gundlach, H., Zytnicki, M., Jamilloux, V., Quesneville, H., Wicker, T., Faccioli, P., Colaiacovo, M., Stanca, A., Budak, H., Cattivelli, L., Glover, N., Pingault, L., Paux, E., Sharma, S., Appels, R., Bellgard, M., Chapman, B., Nussbaumer, T., Bader, K., Rimbert, H., Wang, S., Knox, R., Kilian, A., Alaux, M., Alfama, F., Couderc, L., Guilhot, N., Viseux, C., Loaec, M., Keller, B., Praud, S., Norwegian University of Life Sciences (NMBU), Helmholtz-Zentrum München (HZM), Helmholtz Centre Munich, Plant Genome and Systems Biology, Helmholtz Zentrum München, German Research Center for Environmental Health - Helmholtz Center München (GmbH), John Innes Centre [Norwich], Eversole Associates, Bayer Corporation, Génétique Diversité et Ecophysiologie des Céréales (GDEC), Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Institute of Experimental Botany of the Czech Academy of Sciences (IEB / CAS), Czech Academy of Sciences [Prague] (CAS), Laboratoire d'hydrodynamique (LadHyX), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Istituto per la Microelettronica e Microsistemi [Catania] (IMM), Consiglio Nazionale delle Ricerche (CNR), Institut de Génomique d'Evry (IG), Institut de Biologie François JACOB (JACOB), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Structure et évolution des génomes (SEG), CNS-Université d'Évry-Val-d'Essonne (UEVE)-Centre National de la Recherche Scientifique (CNRS), Seismological Laboratory, California Institute of Technology (CALTECH), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Department of Physics, University of Tokyo, The University of Tokyo (UTokyo), National Institute for Environmental Studies (NIES), Université de Lille, Sciences et Technologies, The University of Western Australia (UWA), Leibniz Institute of Plant Genetics and Crop Plant Research, Unité de Recherche Génomique Info (URGI), Institut National de la Recherche Agronomique (INRA), Laboratoire Evolution, Génomes et Spéciation (LEGS), Centre National de la Recherche Scientifique (CNRS), Consiglio per la Ricerca e Sperimentazione in Agricoltura, Climate Research Division [Toronto], Environment and Climate Change Canada, School of Biosciences, University of Birmingham [Birmingham], Centre for Comparative Genomics, Murdoch University, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Plant Genome and Systems Biology, Helmholtz Diabetes Center at Helmholtz Zentrum, BIOGEMMA, Centre de Recherche de Chappes, Diversity Arrays Technology Pty Ltd (DArT P/L), Institute of plant biology, Universität Zürich [Zürich] = University of Zurich (UZH), Research Council of Norway 199387Biotechnology and Biological Sciences Research Council (BBSRC) BB/J003166/1,BBS/E/T/000PR6193National Science Foundation (NSF) - Directorate for Computer & Information Science & Engineering (CISE) 1126709, Helmholtz Zentrum München = German Research Center for Environmental Health, Biotechnology and Biological Sciences Research Council (BBSRC), Laboratoire Chrono-environnement (UMR 6249) (LCE), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Université Paris-Saclay-Institut de Biologie François JACOB (JACOB), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), University of Oslo (UiO), The Sainsbury Laboratory (TSL), and Norwegian Research Council 199387

Subjects
0106 biological sciences, TRITICUM, GENES, [SDV]Life Sciences [q-bio], Biology, Genes, Plant, 01 natural sciences, Genome, Evolution, Molecular, Polyploidy, [SDV.GEN.GPL]Life Sciences [q-bio]/Genetics/Plants genetics, 03 medical and health sciences, Polyploid, Phylogenetics, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Gene, DRAFT GENOME, Phylogeny, AEGILOPS-TAUSCHII, 030304 developmental biology, 2. Zero hunger, Genetics, 0303 health sciences, [SDV.GEN]Life Sciences [q-bio]/Genetics, Multidisciplinary, Phylogenetic tree, A-GENOME, myr, food and beverages, Bread, EVOLUTION, ALIGNMENT, DOMESTICATION, Hybridization, Genetic, Hybrid speciation, Ploidy, Genome, Plant, 010606 plant biology & botany, PACKAGE
Abstract

International audience; The allohexaploid bread wheat genome consists of three closely related subgenomes (A, B, and D), but a clear understanding of their phylogenetic history has been lacking. We used genome assemblies of bread wheat and five diploid relatives to analyze genome-wide samples of gene trees, as well as to estimate evolutionary relatedness and divergence times. We show that the A and B genomes diverged from a common ancestor similar to 7 million years ago and that these genomes gave rise to the D genome through homoploid hybrid speciation 1 to 2 million years later. Our findings imply that the present-day bread wheat genome is a product of multiple rounds of hybrid speciation (homoploid and polyploid) and lay the foundation for a new framework for understanding the wheat genome as a multilevel phylogenetic mosaic.

Published
2014

44. Registration of ‘NE05548’ (Husker Genetics Brand Panhandle) Hard Red Winter Wheat

Author

Baenziger, P. S., primary, Graybosch, R. A., additional, Regassa, T., additional, Klein, R. N., additional, Kruger, G. R., additional, Santra, D. K., additional, Xu, L., additional, Rose, D. J., additional, Wegulo, S. N., additional, Jin, Y., additional, Kolmer, J., additional, Hein, G. L., additional, Chen, M.-S., additional, Bai, G., additional, Bowden, R. L., additional, and Poland, J., additional

Published
2016
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48. A physical, genetic and functional sequence assembly of the barley genome

Author

Mayer, Kf, Waugh, R, Langridge, P, Close, Tj, Wise, Rp, Graner, A, Matsumoto, T, Sato, K, Schulman, A, Muehlbauer, Gj, Stein, N, Ariyadasa, R, Schulte, D, Poursarebani, N, Zhou, R, Steuernagel, B, Mascher, M, Scholz, U, Shi, B, Madishetty, K, Svensson, Jt, Bhat, P, Moscou, M, Resnik, J, Hedley, P, Liu, H, Morris, J, Frenkel, Z, Korol, A, Bergès, H, Taudien, S, Felder, M, Groth, M, Platzer, M, Himmelbach, A, Lonardi, S, Duma, D, Alpert, M, Cordero, Francesca, Beccuti, Marco, Ciardo, G, Ma, Y, Wanamaker, S, Cattonaro, F, Vendramin, V, Scalabrin, S, Radovic, S, Wing, R, Morgante, M, Nussbaumer, T, Gundlach, H, Martis, M, Poland, J, Spannagl, M, Pfeifer, M, Moisy, C, Tanskanen, J, Zuccolo, A, Russell, J, Druka, A, Marshall, D, Bayer, M, Swarbreck, D, Sampath, D, Ayling, S, Febrer, M, Caccamo, M, Tanaka, T, Wannamaker, S, Schmutzer, T, Brown, Jw, Fincher, Gb, Stein, N., MIPS/IBIS, Helmholtz-Zentrum München (HZM), The James Hutton Institute, University of Adelaide, Iowa State University (ISU), Leibniz Institute of Plant Genetics and Crop Plant Research, Natl Inst Agrobiol Sci, Partenaires INRAE, Okayama University, University of Helsinki, University of Minnesota [Twin Cities] (UMN), University of Minnesota System, Inst Evolut, University of Haifa [Haifa], German Ministry of Education and Research (BMBF) [0314000], Leibniz Association, European project of the 7th framework programme 'TriticeaeGenome', Austrian Wissenschaftsfond (FWF) [SFB F3705], ERA-NET PG project 'BARCODE', Scottish Government/BBSRC [BB/100663X/1], National Science Foundation [DBI 0321756, DBI-1062301], USDA-CSREES-NRI [2006-55606-16722], Agriculture and Food Research Initiative Plant Genome, Genetics and Breeding Program of USDA-CSREES-NIFA [2009-65300-05645], BRAIN and NBRP-Japan, and Japanese MAFF [TRG1008]

Subjects
0106 biological sciences, [SDV]Life Sciences [q-bio], Sequence assembly, 01 natural sciences, Genome, Gene Expression Regulation, Plant, 2. Zero hunger, Genetics, 0303 health sciences, MESSENGER-RNA DECAY, Multidisciplinary, food and beverages, Genomics, ARABIDOPSIS, Physical Chromosome Mapping, Molecular Sequence Annotation, Codon, Nonsense, MAP, HORDEUM-VULGARE L, Genome, Plant, EXPRESSION, Crops, Agricultural, Sequence analysis, Computational biology, Biology, MILDEW RESISTANCE LOCUS, Genes, Plant, Polymorphism, Single Nucleotide, Plant sciences, Evolution, Molecular, 03 medical and health sciences, REVEALS, RICE, Gene, 030304 developmental biology, Repetitive Sequences, Nucleic Acid, Comparative genomics, Hordeum, Sequence Analysis, DNA, 15. Life on land, EVOLUTION, Alternative Splicing, NONCODING RNAS, Hordeum vulgare, Transcriptome, 010606 plant biology & botany
Abstract

International audience; Barley (Hordeum vulgare L.) is among the world's earliest domesticated and most important crop plants. It is diploid with a large haploid genome of 5.1 gigabases (Gb). Here we present an integrated and ordered physical, genetic and functional sequence resource that describes the barley gene-space in a structured whole-genome context. We developed a physical map of 4.98 Gb, with more than 3.90 Gb anchored to a high-resolution genetic map. Projecting a deep whole-genome shotgun assembly, complementary DNA and deep RNA sequence data onto this framework supports 79,379 transcript clusters, including 26,159 'high-confidence' genes with homology support from other plant genomes. Abundant alternative splicing, premature termination codons and novel transcriptionally active regions suggest that post-transcriptional processing forms an important regulatory layer. Survey sequences from diverse accessions reveal a landscape of extensive single-nucleotide variation. Our data provide a platform for both genome-assisted research and enabling contemporary crop improvement.

Published
2012

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