Abstract
Photoproduction events which have two or more jets have been studied in the Wγp range 135 GeV < Wγp < 280 GeV with the ZEUS detector at HERA. A class of events is observed with little hadronic activity between the jets. The jets are separated by pseudorapidity intervals (Δη) of up to four units and have transverse energies greater than 6 GeV. A gap is defined as the absence between the jets of particles with transverse energy greater than 300 MeV. The fraction of events containing a gap is measured as a function of Δη. It decreases exponentially as expected for processes in which colour is exchanged between the jets, up to a value of Δη ∼ 3, then reaches a constant value of about 0.1. The excess above the exponential fall-off can be interpreted as evidence for hard diffractive scattering via a strongly interacting colour singlet object.
| Lingua originale | Inglese |
|---|---|
| pagine (da-a) | 55-68 |
| Numero di pagine | 14 |
| Rivista | PHYSICS LETTERS. SECTION B |
| Volume | 369 |
| Numero di pubblicazione | 1 |
| DOI | |
| Stato di pubblicazione | Pubblicato - 1996 |
Accesso al documento
Altri file e collegamenti
Fingerprint
Entra nei temi di ricerca di 'Rapidity gaps between jets in photoproduction at HERA'. Insieme formano una fingerprint unica.Cita questo
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver
}
In: PHYSICS LETTERS. SECTION B, Vol. 369, N. 1, 1996, pag. 55-68.
Risultato della ricerca: Contributo su rivista › Articolo in rivista
TY - JOUR
T1 - Rapidity gaps between jets in photoproduction at HERA
AU - Derrick, M
AU - Krakauer, D
AU - Magill, S
AU - Mikunas, D
AU - Musgrave, B
AU - Repond, J
AU - Stanek, R
AU - RL, Talaga
AU - Zhang, H
AU - Bari, G
AU - Basile, M
AU - Bellagamba, L
AU - Boscherini, D
AU - Bruni, A
AU - Bruni, G
AU - Bruni, P
AU - GC, Romeo
AU - Castellini, G
AU - Chiarini, M
AU - Cifarelli, L
AU - Cindolo, F
AU - Contin, A
AU - Corradi, M
AU - Gialas, I
AU - Giusti, P
AU - Iacobucci, G
AU - Laurenti, G
AU - Levi, G
AU - Margotti, A
AU - Massam, T
AU - Nania, R
AU - Nemoz, C
AU - Palmonari, F
AU - Polini, A
AU - Sartorelli, G
AU - Timellini, R
AU - YZ, Garcia
AU - Zichichi, A
AU - Bornheim, A
AU - Crittenden, J
AU - Desch, K
AU - Diekmann, B
AU - Doeker, T
AU - Eckert, M
AU - Feld, L
AU - Frey, A
AU - Geerts, M
AU - Grothe, M
AU - Hartmann, H
AU - Heinloth, K
AU - Heinz, L
AU - Hilger, E
AU - HP, Jakob
AU - UF, Katz
AU - Mengel, S
AU - Mollen, J
AU - Paul, E
AU - Pfeiffer, M
AU - Rembser, C
AU - Schramm, D
AU - Stamm, J
AU - Wedemeyer, R
AU - CampbellRobson, S
AU - Cassidy, A
AU - WN, Cottingham
AU - Dyce, N
AU - Foster, B
AU - George, S
AU - ME, Hayes
AU - GP, Heath
AU - HF, Heath
AU - CJS, Morgado
AU - JA, OMara
AU - Piccioni, D
AU - DG, Roff
AU - RJ, Tapper
AU - Yoshida, R
AU - RR, Rau
AU - ARNEODO, Michele
AU - Ayad, R
AU - Capua, M
AU - Garfagnini, A
AU - Iannotti, L
AU - Schioppa, M
AU - Susinno, G
AU - Bernstein, A
AU - Caldwell, A
AU - Cartiglia, N
AU - JA, Parsons
AU - Ritz, S
AU - Sciulli, F
AU - PB, Straub
AU - Wai, L
AU - Yang, S
AU - Zhu, Q
AU - Borzemski, P
AU - Chwastowski, J
AU - Eskreys, A
AU - Piotrzkowski, K
AU - Zachara, M
AU - Zawiejski, L
AU - Adamczyk, L
AU - Bednarek, B
AU - Jelen, K
AU - Kisielewska, D
AU - Kowalski, T
AU - Przybycien, M
AU - RulikowskaZarebska, E
AU - Suszycki, L
AU - Zajac, J
AU - Kotanski, A
AU - LAT, Bauerdick
AU - Behrens, U
AU - Beier, H
AU - JK, Bienlein
AU - Coldewey, C
AU - Deppe, O
AU - Desler, K
AU - Drews, G
AU - Flasinski, M
AU - DJ, Gilkinson
AU - Glasman, C
AU - Gottlicher, P
AU - GrosseKnetter, J
AU - Gutjahr, B
AU - Haas, T
AU - Hain, W
AU - Hasell, D
AU - Hessling, H
AU - Iga, Y
AU - KF, Johnson
AU - Joos, P
AU - Kasemann, M
AU - Klanner, R
AU - Koch, W
AU - Kopke, L
AU - Kotz, U
AU - Kowalski, H
AU - Labs, J
AU - Ladage, A
AU - Lohr, B
AU - Lowe, M
AU - Luke, D
AU - Mainusch, J
AU - Manczak, O
AU - Monteiro, T
AU - JST, Ng
AU - Nickel, S
AU - Notz, D
AU - Ohrenberg, K
AU - Roco, M
AU - Rohde, M
AU - Roldan, J
AU - Schneekloth, U
AU - Schulz, W
AU - Selonke, F
AU - Stiliaris, E
AU - Surrow, B
AU - Voss, T
AU - Westphal, D
AU - Wolf, G
AU - Youngman, C
AU - Zeuner, W
AU - JF, Zhou
AU - HJ, Grabosch
AU - Kharchilava, A
AU - Leich, A
AU - SM, Mari
AU - MCK, Mattingly
AU - Meyer, A
AU - Schlenstedt, S
AU - Wulff, N
AU - Barbagli, G
AU - Gallo, E
AU - Pelfer, P
AU - Anzivino, G
AU - Maccarrone, G
AU - DePasquale, S
AU - Votano, L
AU - Bamberger, A
AU - Eisenhardt, S
AU - Freidhof, A
AU - SoldnerRembold, S
AU - Schroeder, J
AU - Trefzger, T
AU - NH, Brook
AU - PJ, Bussey
AU - AT, Doyle
AU - DH, Saxon
AU - ML, Utley
AU - AS, Wilson
AU - Dannemann, A
AU - Holm, U
AU - Horstmann, D
AU - Neumann, T
AU - Sinkus, R
AU - Wick, K
AU - Badura, E
AU - BD, Burow
AU - Hagge, L
AU - Lohrmann, E
AU - Milewski, J
AU - Nakahata, M
AU - Pavel, N
AU - Poelz, G
AU - Schott, W
AU - Zetsche, F
AU - TC, Bacon
AU - Bruemmer, N
AU - Butterworth, I
AU - VL, Harris
AU - BYH, Hung
AU - KR, Long
AU - DB, Miller
AU - PPO, Morawitz
AU - Prinias, A
AU - JK, Sedgbeer
AU - AF, Whitfield
AU - Mallik, U
AU - McCliment, E
AU - MZ, Wang
AU - SM, Wang
AU - JT, Wu
AU - Cloth, P
AU - Filges, D
AU - SH, An
AU - SM, Hong
AU - SW, Nam
AU - SK, Park
AU - MH, Suh
AU - SH, Yon
AU - Imlay, R
AU - Kartik, S
AU - HJ, Kim
AU - RR, McNeil
AU - Metcalf, W
AU - VK, Nadendla
AU - Barreiro, F
AU - Cases, G
AU - JP, Fernandez
AU - Graciani, R
AU - JM, Hernandez
AU - Hervas, L
AU - Labarga, L
AU - Martinez, M
AU - delPeso, J
AU - Puga, J
AU - Terron, J
AU - JF, deTroconiz
AU - GR, Smith
AU - Corriveau, F
AU - DS, Hanna
AU - Hartmann, J
AU - LW, Hung
AU - JN, Lim
AU - CG, Matthews
AU - PM, Patel
AU - LE, Sinclair
AU - DG, Stairs
AU - StLaurent, M
AU - Ullmann, R
AU - Zacek, G
AU - Bashkirov, V
AU - BA, Dolgoshein
AU - Stifutkin, A
AU - GL, Bashindzhagyan
AU - PF, Ermolov
AU - LK, Gladilin
AU - YA, Golubkov
AU - VD, Kobrin
AU - IA, Krozhavina
AU - VA, Kuzmin
AU - OY, Lukina
AU - AS, Proskuryakov
AU - AA, Savin
AU - LM, Shcheglova
AU - AN, Solomin
AU - NP, Zotov
AU - Botje, M
AU - Chlebana, F
AU - Dake, A
AU - Engelen, J
AU - deKamps, M
AU - Kooijman, P
AU - Kruse, A
AU - Tiecke, H
AU - Verkerke, W
AU - Vreeswijk, M
AU - Wiggers, L
AU - deWolf, E
AU - vanWoudenberg, R
AU - Acosta, D
AU - Bylsma, B
AU - LS, Durkin
AU - Gilmore, J
AU - Honscheid, K
AU - Li, C
AU - TY, Ling
AU - KW, McLean
AU - Nylander, P
AU - IH, Park
AU - TA, Romanowski
AU - Seidlein, R
AU - DS, Bailey
AU - Byrne, A
AU - RJ, Cashmore
AU - AM, CooperSarkar
AU - RCE, Devenish
AU - Harnew, N
AU - Lancaster, M
AU - Lindemann, L
AU - JD, McFall
AU - Nath, C
AU - VA, Noyes
AU - Quadt, A
AU - JR, Tickner
AU - Uijterwaal, H
AU - Walczak, R
AU - DS, Waters
AU - FF, Wilson
AU - Yip, T
AU - Abbiendi, G
AU - Bertolin, A
AU - Brugnera, R
AU - Carlin, R
AU - DalCorso, F
AU - DeGiorgi, M
AU - Dosselli, U
AU - Limentani, S
AU - Morandin, M
AU - Posocco, M
AU - Stanco, L
AU - Stroili, R
AU - Voci, C
AU - Bulmahn, J
AU - JM, Butterworth
AU - RG, Feild
AU - BY, Oh
AU - JR, Okrasinski
AU - JJ, Whitmore
AU - DAgostini, G
AU - Marini, G
AU - Nigro, A
AU - Tassi, E
AU - JC, Hart
AU - NA, McCubbin
AU - Prytz, K
AU - TP, Shah
AU - TL, Short
AU - Barberis, E
AU - Dubbs, T
AU - Heusch, C
AU - VanHook, M
AU - Lockman, W
AU - JT, Rahn
AU - HFW, Sadrozinski
AU - Seiden, A
AU - DC, Williams
AU - Biltzinger, J
AU - RJ, Seifert
AU - Schwarzer, O
AU - AH, Walenta
AU - Zech, G
AU - Abramowicz, H
AU - Briskin, G
AU - Dagan, S
AU - HandelPikielny, C
AU - Levy, A
AU - JI, Fleck
AU - Hasegawa, T
AU - Hazumi, M
AU - Ishii, T
AU - Kuze, M
AU - Mine, S
AU - Nagasawa, Y
AU - Nakao, M
AU - Suzuki, I
AU - Tokushuku, K
AU - Yamada, S
AU - Yamazaki, Y
AU - Chiba, M
AU - Hamatsu, R
AU - Hirose, T
AU - Homma, K
AU - Kitamura, S
AU - Nakamitsu, Y
AU - Yamauchi, K
AU - Cirio, R
AU - Costa, M
AU - MI, Ferrero
AU - Lamberti, L
AU - Maselli, S
AU - Peroni, C
AU - Sacchi, R
AU - Solano, A
AU - Staiano, A
AU - Dardo, M
AU - DC, Bailey
AU - Bandyopadhyay, D
AU - Benard, F
AU - Brkic, M
AU - DM, Gingrich
AU - GF, Hartner
AU - KK, Joo
AU - GM, Levman
AU - JF, Martin
AU - RS, Orr
AU - Polenz, S
AU - CR, Sampson
AU - RJ, Teuscher
AU - CD, Catterall
AU - JW, Jones
AU - PB, Kaziewicz
AU - JB, Lane
AU - RL, Saunders
AU - Shulman, J
AU - Blankenship, K
AU - Lu, B
AU - LW, Mo
AU - Bogusz, W
AU - Charchula, K
AU - Ciborowski, J
AU - Gajewski, J
AU - Grzelak, G
AU - Kasprzak, M
AU - Krzyzanowski, M
AU - Muchorowski, K
AU - RJ, Nowak
AU - JM, Pawlak
AU - Tymieniecka, T
AU - AK, Wroblewski
AU - JA, Zakrzewski
AU - AF, Zarnecki
AU - Adamus, M
AU - Eisenberg, Y
AU - Karshon, U
AU - Revel, D
AU - ZerZion, D
AU - Ali, I
AU - WF, Badgett
AU - Behrens, B
AU - Dasu, S
AU - Fordham, C
AU - Foudas, C
AU - Goussiou, A
AU - RJ, Loveless
AU - DD, Reeder
AU - Silverstein, S
AU - WH, Smith
AU - Vaiciulis, A
AU - Wodarczyk, M
AU - Tsurugai, T
AU - Bhadra, S
AU - ML, Cardy
AU - CP, Fagerstroem
AU - WR, Frisken
AU - KM, Furutani
AU - Khakzad, M
AU - WN, Murray
AU - WB, Schmidke
N1 - Funding Information: ’ Also at IROE Florence, Italy. * Now at Univ. of Salerno and INFN Napoli, Italy. 3 Supported by EU HCM contract ERB-CHRX-CT93-0376. 4 Supported by Worldlab, Lausanne, Switzerland. 5 Now a self-employed consultant. 6 Now at ELEKLUFT, Bonn. ’ Now also at University of Torino. * Alexander von Humboldt Fellow. g Alfred P. Sloan Foundation Fellow. lo Now at Inst. of Computer Science, Jagellonian Univ., Cracow. l1 Now at Comma-Soft, Bonn. ‘* Visitor from Florida State University. I3 Now at Univ. of Mainz. I4 Now at DESY Computer Center. I5 Supported by European Community Program PRAXIS XXI. l6 Now at Dr. Seidel Informationssysteme,F rankfurt/M. ” Now at Inst. of Accelerating Systems & Applications (IASA), Athens. l8 Now at Mercer Management Consulting, Munich. lg Now at Univ. de Strasbourg. ” Now at Andrews University, Barrien Springs, USA. *’ Now with OPAL Collaboration, Faculty of Physics at Univ. of Freiburg. ** Now at SAS-Institut GmbH, Heidelberg. u Now at GSI Darmstadt. 24A lso supported by NSERC. Z Now at Institutef or Cosmic Ray Research,U niversity of Tokyo. 26P artially supportedb y CAM. ” Partially supportedb y DESY. 28N ow at Philips Natlab, Eindhoven, NL. 2gN ow at Carleton University, Ottawa, Canada. 3oN ow at Departmento f Energy, Washington. 31N ow at HEP Div., Argonne National Lab., Argonne, IL, USA. 32N ow at Oxford Magnet Technology, Eynsham, Oxon. 33I n part supportedb y Argonne National Laboratory. 34S upported by a MINERVA Fellowship. 35N ow at Centre for SubatomicR esearch,U niv.of Alberta, Canada and TRIUMF, Vancouver, Canada. 36S upported by the Polish State Committee for Scientific Research, grant No. 2P03B09308. 37S upported by the Polish State Committee for Scientific Research, grant No. 2P03B09208. 38N ow at University of Colorado, USA. 3gN ow at High Energy Group of State University of New York, Funding Information: Stony Brook, NY. 4oS upported by the Natural Sciences and Engineering Research Council of Canada (NSERC) 41S upported by the FCAR of Quebec, Canada. 42S upported by the German Federal Ministry for Education and Science, Research and Technology (BMBF), under contract numbers 056BN191, 056FR19R 056HH191, 056HH291,056SI791. 43S upportedb y the MINERVA Gesellschaft fur Forschung GmbH, and by the Israel Academy of Science. 44S upported by the German Israeli Foundation, and by the Israel Academy of Science. 45S upported by the Italian National Institute for Nuclear Physics (INFN). 46S upported by the Japanese Ministry of Education, Science and Culture (the Monbusho) and its grants for Scientific Research. 47S upported by the Korean Ministry of Education and Korea Science and Engineering Foundation. 48S upportedb y the NetherlandsF oundation for Research on Matter (FOM). 4g Supported by the Polish State Committee for Scientific Research, grants No. 115/E_343/SPUB/PO3/109/95, 2PO3B 244 08~02,~ 03, pO4 and ~05, and the Foundation for Polish-German Collaboration (proj. No. 506/92). 5oS upportedb y the Polish StateC ommitteef or Scientific Research (grant No. 2 PO3B 083 OS). 5* Partially supportedb y the German Federal Ministry for Education and Science, Research and Technology (BMBF) 52S upported by the German Federal Ministry for Education and Science, Research and Technology (BMBF), and the Fund of Fun-damentalR esearch of Russian Ministry of Science and Education and by INTAS-Grant No. 93-63. 53S upported by the Spanish Ministry of Education and Science through funds provided by CICYT. 54S upported by the Particle Physics and Astronomy Research Council. 55S upported by the US Departmentof Energy. 56S upported by the US National Science Foundation.
PY - 1996
Y1 - 1996
N2 - Photoproduction events which have two or more jets have been studied in the Wγp range 135 GeV < Wγp < 280 GeV with the ZEUS detector at HERA. A class of events is observed with little hadronic activity between the jets. The jets are separated by pseudorapidity intervals (Δη) of up to four units and have transverse energies greater than 6 GeV. A gap is defined as the absence between the jets of particles with transverse energy greater than 300 MeV. The fraction of events containing a gap is measured as a function of Δη. It decreases exponentially as expected for processes in which colour is exchanged between the jets, up to a value of Δη ∼ 3, then reaches a constant value of about 0.1. The excess above the exponential fall-off can be interpreted as evidence for hard diffractive scattering via a strongly interacting colour singlet object.
AB - Photoproduction events which have two or more jets have been studied in the Wγp range 135 GeV < Wγp < 280 GeV with the ZEUS detector at HERA. A class of events is observed with little hadronic activity between the jets. The jets are separated by pseudorapidity intervals (Δη) of up to four units and have transverse energies greater than 6 GeV. A gap is defined as the absence between the jets of particles with transverse energy greater than 300 MeV. The fraction of events containing a gap is measured as a function of Δη. It decreases exponentially as expected for processes in which colour is exchanged between the jets, up to a value of Δη ∼ 3, then reaches a constant value of about 0.1. The excess above the exponential fall-off can be interpreted as evidence for hard diffractive scattering via a strongly interacting colour singlet object.
UR - https://iris.uniupo.it/handle/11579/2748
U2 - 10.1016/0370-2693(95)01588-4
DO - 10.1016/0370-2693(95)01588-4
M3 - Article
SN - 0370-2693
VL - 369
SP - 55
EP - 68
JO - PHYSICS LETTERS. SECTION B
JF - PHYSICS LETTERS. SECTION B
IS - 1
ER -