Energy flow and rapidity gaps between jets in photoproduction at HERA

Adloff, C.; Andreev, V.; Andrieu, B.; Anthonis, T.; Arkadov, V.; Astvatsatourov, A.; Babaev, A.; Bahr, J.; Baranov, P.; Barrelet, E.; Bartel, W.; Bate, P.; Becker, J.; Beglarian, A.; Behnke, O.; Beier, C.; Belousov, A.; Benisch, T.; Berger, C.; Berndt, T.; Bizot, J. C.; Boehme, J.; Boudry, V.; Braunschweig, W.; Brisson, V.; Broker, H. B.; Brown, D. P.; Bruckner, W.; Bruncko, D.; Burger, J.; Busser, F. W.; Bunyatyan, A.; Burrage, A.; Buschhorn, G.; Bystritskaya, L.; Campbell, A. J.; Cao, J.; Caron, S.; Cassol-Brunner, F.; Clarke, D.; Collard, C.; Contreras, J. G.; Coppens, Y. R.; Coughlan, J. A.; Cousinou, M. C.; Cox, B. E.; Cozzika, G.; Cvach, J.; Dainton, J. B.; Dau, W. D.; Daum, K.; Davidsson, M.; Delcourt, B.; Delerue, N.; Demirchyan, R.; De Roeck, A.; De Wolf, E. A.; Diaconu, C.; Dingfelder, J.; Dixon, P.; Dodonov, V.; Dowell, J. D.; Droutskoi, A.; Dubak, A.; Duprel, C.; Eckerlin, G.; Eckstein, D.; Efremenko, V.; Egli, S.; Eichler, R.; Eisele, F.; Eisenhandler, E.; Ellerbrock, M.; Elsen, E.; Erdmann, M.; Erdmann, W.; Faulkner, P. J. W.; Favart, L.; Fedotov, A.; Felst, R.; Ferencei, J.; Ferron, S.; Fleischer, M.; Fleming, Y. H.; Flugge, G.; Fomenko, A.; Foresti, I.; Formanek, J.; Franke, G.; Gabathuler, E.; Gabathuler, K.; Garvey, J.; Gassner, J.; Gayler, J.; Gerhards, R.; Gerlich, C.; Ghazaryan, S.; Goerlich, L.; Gogitidze, N.; Grab, C.; Grassler, H.; Greenshaw, T.; Grindhammer, G.; Hadig, T.; Haidt, D.; Hajduk, L.; Haller, J.; Haynes, W. J.; Heinemann, B.; Heinzelmann, G.; Henderson, R. C. W.; Hengstmann, S.; Henschel, H.; Heremans, R.; Herrera, G.; Herynek, I.; Hildebrandt, M.; Hilgers, M.; Hiller, K. H.; Hladky, J.; Hoting, P.; Hoffmann, D.; Horisberger, R.; Hurling, S.; Ibbotson, M.; Issever, C.; Jacquet, M.; Jaffre, M.; Janauschek, L.; Janssen, X.; Jemanov, V.; Jonsson, L.; Johnson, C.; Johnson, D. P.; Jones, M. A. S.; Jung, H.; Kant, D.; Kapichine, M.; Jeamanov, V.; Jonsson, L.; Johnson, C.; Johnson, D. P.; Jones, M. A. S.; Jung, H.; Kant, D.; Kapichine, M.; Karlsson, M.; Karschnick, O.; Keil, F.; Keller, N.; Kennedy, J.; Kenyon, I. R.; Kermiche, S.; Kiesling, C.; Kjellberg, P.; Klein, M.; Kleinwort, C.; Kluge, T.; Knies, G.; Koblitz, B.; Kolya, S. D.; Korbel, V.; Kostka, P.; Kotelnikov, S. K.; Koutouev, R.; Koutov, A.; Krehbiel, H.; Kroseberg, J.; Kruger, K.; Kupper, A.; Kuhr, T.; Kurca, T.; Lamb, D.; Landon, M. P. J.; Lange, W.; Lastovicka, T.; Laycock, P.; Lebailly, E.; Lebedev, A.; Leissner, B.; Lemrani, R.; Lendermann, V.; Levonian, S.; Lindstroem, M.; List, B.; Lobodzinska, E.; Lobodzinski, B.; Loginov, A.; Loktionova, N.; Lubimov, V.; Luders, S.; Luke, D.; Lytkin, L.; Mahlke-Kruger, H.; Malden, N.; Malinovski, E.; Malinovski, I.; Maracek, R.; Marage, P.; Marks, J.; Marshall, R.; Martyn, H. U.; Martyniak, J.; Maxfield, S. J.; Meer, D.; Mehta, A.; Meier, K.; Meyer, A. B.; Meyer, H.; Meyer, J.; Meyer, P. O.; Mikocki, S.; Milstead, D.; Mkrtchyan, T.; Mohr, R.; Mohrdieck, S.; Mondragon, M. N.; Moreau, F.; Morozov, A.; Morris, J. V.; Muller, K.; Murin, P.; Nagovizin, V.; Naroska, B.; Naumann, J.; Naumann, T.; Nellen, G.; Newman, P. R.; Nicholls, T. C.; Niebergall, F.; Niebuhr, C.; Nix, O.; Nowak, G.; Olsson, J. E.; Ozerov, D.; Panassik, V.; Pascaud, C.; Patel, G. D.; Peez, M.; Perez, E.; Phillips, J. P.; Pitzl, D.; Poschl, R.; Potachnikova, I.; Povh, B.; Radel, G.; Rauschenberger, J.; Reimer, P.; Reisert, B.; Reyna, D.; Risler, C.; Rizvi, E.; Robmann, P.; Roosen, R.; Rostovtsev, A.; Rusakov, S.; Rybicki, K.; Sankey, D. P. C.; Schatzel, S.; Scheins, J.; Schilling, F. P.; Schleper, P.; Schmidt, D.; Schmidt, D.; Schmidt, S.; Schmitt, S.; Schneider, M.; Schoeffel, L.; Schoning, A.; Schorner, T.; Schroder, V.; Schultz-Coulon, H. C.; Schwanenberger, C.; Sedlak, K.; Sefkow, F.; Shekelyan, V.; Sheviakov, I.; Shtarkov, L. N.; Sirois, Y.; Sloan, T.; Smirnov, P.; Soloviev, Y.; South, D.; Spaskov, V.; Specka, A.; Spitzer, H.; Stamen, R.; Stella, B.; Stiewe, J.; Straumann, U.; Swart, M.; Tasevsky, M.; Tchetchelnitski, S.; Thompson, G.; Thompson, P. D.; Tobien, N.; Traynor, D.; Truol, P.; Tsipolitis, G.; Tsurin, I.; Turnau, J.; Turney, J. E.; Tzamariudaki, E.; Udluft, S.; Urban, M.; Usik, A.; Valkar, S.; Valkarova, A.; Vallee, C.; Van Mechelen, P.; Vassiliev, S.; Vazdik, Y.; Vichnevski, A.; Wacker, K.; Wagner, J.; Wallny, R.; Waugh, B.; Weber, G.; Weber, M.; Wegener, D.; Werner, C.; Werner, M.; Werner, N.; Wessels, M.; White, G.; Wiesand, S.; Wilksen, T.; Winde, M.; Winter, G. G.; Wissing, C.; Wobisch, M.; Woehrling, E. E.; Wunsch, E.; Wyatt, A. C.; Zacek, J.; Zalesak, J.; Zhang, Z.; Zhokin, A.; Zomer, F.; zur Nedden, M.

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Energy flow and rapidity gaps between jets in photoproduction at HERA

Adloff, C., Andreev, V., Andrieu, B., Anthonis, T., Arkadov, V., Astvatsatourov, A., et al. (2002). Energy flow and rapidity gaps between jets in photoproduction at HERA. European Physical Journal C, 24(4), 517-527.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-82E0-5 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-82E1-3

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Adloff, C.¹, Author
Andreev, V.¹, Author
Andrieu, B.¹, Author
Anthonis, T.¹, Author
Arkadov, V.¹, Author
Astvatsatourov, A.¹, Author
Babaev, A.¹, Author
Bahr, J.¹, Author
Baranov, P.¹, Author
Barrelet, E.¹, Author
Bartel, W.¹, Author
Bate, P.¹, Author
Becker, J.¹, Author
Beglarian, A.¹, Author
Behnke, O.¹, Author
Beier, C.¹, Author
Belousov, A.¹, Author
Benisch, T.¹, Author
Berger, C.¹, Author
Berndt, T.¹, Author
Bizot, J. C.¹, AuthorBoehme, J.¹, AuthorBoudry, V.¹, AuthorBraunschweig, W.¹, AuthorBrisson, V.¹, AuthorBroker, H. B.¹, AuthorBrown, D. P.¹, AuthorBruckner, W.¹, AuthorBruncko, D.¹, AuthorBurger, J.¹, AuthorBusser, F. W.¹, AuthorBunyatyan, A.², Author Burrage, A.¹, AuthorBuschhorn, G.¹, AuthorBystritskaya, L.¹, AuthorCampbell, A. J.¹, AuthorCao, J.¹, AuthorCaron, S.¹, AuthorCassol-Brunner, F.¹, AuthorClarke, D.¹, AuthorCollard, C.¹, AuthorContreras, J. G.¹, AuthorCoppens, Y. R.¹, AuthorCoughlan, J. A.¹, AuthorCousinou, M. C.¹, AuthorCox, B. E.¹, AuthorCozzika, G.¹, AuthorCvach, J.¹, AuthorDainton, J. B.¹, AuthorDau, W. D.¹, AuthorDaum, K.¹, AuthorDavidsson, M.¹, AuthorDelcourt, B.¹, AuthorDelerue, N.¹, AuthorDemirchyan, R.¹, AuthorDe Roeck, A.¹, AuthorDe Wolf, E. A.¹, AuthorDiaconu, C.¹, AuthorDingfelder, J.¹, AuthorDixon, P.¹, AuthorDodonov, V.², Author Dowell, J. D.¹, AuthorDroutskoi, A.¹, AuthorDubak, A.¹, AuthorDuprel, C.¹, AuthorEckerlin, G.¹, AuthorEckstein, D.¹, AuthorEfremenko, V.¹, AuthorEgli, S.¹, AuthorEichler, R.¹, AuthorEisele, F.¹, AuthorEisenhandler, E.¹, AuthorEllerbrock, M.¹, AuthorElsen, E.¹, AuthorErdmann, M.¹, AuthorErdmann, W.¹, AuthorFaulkner, P. J. W.¹, AuthorFavart, L.¹, AuthorFedotov, A.¹, AuthorFelst, R.¹, AuthorFerencei, J.¹, AuthorFerron, S.¹, AuthorFleischer, M.¹, AuthorFleming, Y. H.¹, AuthorFlugge, G.¹, AuthorFomenko, A.¹, AuthorForesti, I.¹, AuthorFormanek, J.¹, AuthorFranke, G.¹, AuthorGabathuler, E.¹, AuthorGabathuler, K.¹, AuthorGarvey, J.¹, AuthorGassner, J.¹, AuthorGayler, J.¹, AuthorGerhards, R.¹, AuthorGerlich, C.¹, AuthorGhazaryan, S.¹, AuthorGoerlich, L.¹, AuthorGogitidze, N.¹, AuthorGrab, C.¹, AuthorGrassler, H.¹, AuthorGreenshaw, T.¹, AuthorGrindhammer, G.¹, AuthorHadig, T.¹, AuthorHaidt, D.¹, AuthorHajduk, L.¹, AuthorHaller, J.¹, AuthorHaynes, W. J.¹, AuthorHeinemann, B.¹, AuthorHeinzelmann, G.¹, AuthorHenderson, R. C. W.¹, AuthorHengstmann, S.¹, AuthorHenschel, H.¹, AuthorHeremans, R.¹, AuthorHerrera, G.¹, AuthorHerynek, I.¹, AuthorHildebrandt, M.¹, AuthorHilgers, M.¹, AuthorHiller, K. H.¹, AuthorHladky, J.¹, AuthorHoting, P.¹, AuthorHoffmann, D.¹, AuthorHorisberger, R.¹, AuthorHurling, S.¹, AuthorIbbotson, M.¹, AuthorIssever, C.¹, AuthorJacquet, M.¹, AuthorJaffre, M.¹, AuthorJanauschek, L.¹, AuthorJanssen, X.¹, AuthorJemanov, V.¹, AuthorJonsson, L.¹, AuthorJohnson, C.¹, AuthorJohnson, D. P.¹, AuthorJones, M. A. S.¹, AuthorJung, H.¹, AuthorKant, D.¹, AuthorKapichine, M.¹, AuthorJeamanov, V.¹, AuthorJonsson, L.¹, AuthorJohnson, C.¹, AuthorJohnson, D. P.¹, AuthorJones, M. A. S.¹, AuthorJung, H.¹, AuthorKant, D.¹, AuthorKapichine, M.¹, AuthorKarlsson, M.¹, AuthorKarschnick, O.¹, AuthorKeil, F.¹, AuthorKeller, N.¹, AuthorKennedy, J.¹, AuthorKenyon, I. R.¹, AuthorKermiche, S.¹, AuthorKiesling, C.¹, AuthorKjellberg, P.¹, AuthorKlein, M.¹, AuthorKleinwort, C.¹, AuthorKluge, T.¹, AuthorKnies, G.¹, AuthorKoblitz, B.¹, AuthorKolya, S. D.¹, AuthorKorbel, V.¹, AuthorKostka, P.¹, AuthorKotelnikov, S. K.¹, AuthorKoutouev, R.¹, AuthorKoutov, A.¹, AuthorKrehbiel, H.¹, AuthorKroseberg, J.¹, AuthorKruger, K.¹, AuthorKupper, A.¹, AuthorKuhr, T.¹, AuthorKurca, T.¹, AuthorLamb, D.¹, AuthorLandon, M. P. J.¹, AuthorLange, W.¹, AuthorLastovicka, T.¹, AuthorLaycock, P.¹, AuthorLebailly, E.¹, AuthorLebedev, A.¹, AuthorLeissner, B.¹, AuthorLemrani, R.¹, AuthorLendermann, V.¹, AuthorLevonian, S.¹, AuthorLindstroem, M.¹, AuthorList, B.¹, AuthorLobodzinska, E.¹, AuthorLobodzinski, B.¹, AuthorLoginov, A.¹, AuthorLoktionova, N.¹, AuthorLubimov, V.¹, AuthorLuders, S.¹, AuthorLuke, D.¹, AuthorLytkin, L.², Author Mahlke-Kruger, H.¹, AuthorMalden, N.¹, AuthorMalinovski, E.¹, AuthorMalinovski, I.¹, AuthorMaracek, R.¹, AuthorMarage, P.¹, AuthorMarks, J.¹, AuthorMarshall, R.¹, AuthorMartyn, H. U.¹, AuthorMartyniak, J.¹, AuthorMaxfield, S. J.¹, AuthorMeer, D.¹, AuthorMehta, A.¹, AuthorMeier, K.¹, AuthorMeyer, A. B.¹, AuthorMeyer, H.¹, AuthorMeyer, J.¹, AuthorMeyer, P. O.¹, AuthorMikocki, S.¹, AuthorMilstead, D.¹, AuthorMkrtchyan, T.¹, AuthorMohr, R.¹, AuthorMohrdieck, S.¹, AuthorMondragon, M. N.¹, AuthorMoreau, F.¹, AuthorMorozov, A.¹, AuthorMorris, J. V.¹, AuthorMuller, K.¹, AuthorMurin, P.¹, AuthorNagovizin, V.¹, AuthorNaroska, B.¹, AuthorNaumann, J.¹, AuthorNaumann, T.¹, AuthorNellen, G.¹, AuthorNewman, P. R.¹, AuthorNicholls, T. C.¹, AuthorNiebergall, F.¹, AuthorNiebuhr, C.¹, AuthorNix, O.¹, AuthorNowak, G.¹, AuthorOlsson, J. E.¹, AuthorOzerov, D.¹, AuthorPanassik, V.¹, AuthorPascaud, C.¹, AuthorPatel, G. D.¹, AuthorPeez, M.¹, AuthorPerez, E.¹, AuthorPhillips, J. P.¹, AuthorPitzl, D.¹, AuthorPoschl, R.¹, AuthorPotachnikova, I.², Author Povh, B.², Author Radel, G.¹, AuthorRauschenberger, J.¹, AuthorReimer, P.¹, AuthorReisert, B.¹, AuthorReyna, D.¹, AuthorRisler, C.¹, AuthorRizvi, E.¹, AuthorRobmann, P.¹, AuthorRoosen, R.¹, AuthorRostovtsev, A.¹, AuthorRusakov, S.¹, AuthorRybicki, K.¹, AuthorSankey, D. P. C.¹, AuthorSchatzel, S.¹, AuthorScheins, J.¹, AuthorSchilling, F. P.¹, AuthorSchleper, P.¹, AuthorSchmidt, D.¹, AuthorSchmidt, D.¹, AuthorSchmidt, S.¹, AuthorSchmitt, S.¹, AuthorSchneider, M.¹, AuthorSchoeffel, L.¹, AuthorSchoning, A.¹, AuthorSchorner, T.¹, AuthorSchroder, V.¹, AuthorSchultz-Coulon, H. C.¹, AuthorSchwanenberger, C.¹, AuthorSedlak, K.¹, AuthorSefkow, F.¹, AuthorShekelyan, V.¹, AuthorSheviakov, I.¹, AuthorShtarkov, L. N.¹, AuthorSirois, Y.¹, AuthorSloan, T.¹, AuthorSmirnov, P.¹, AuthorSoloviev, Y.¹, AuthorSouth, D.¹, AuthorSpaskov, V.¹, AuthorSpecka, A.¹, AuthorSpitzer, H.¹, AuthorStamen, R.¹, AuthorStella, B.¹, AuthorStiewe, J.¹, AuthorStraumann, U.¹, AuthorSwart, M.¹, AuthorTasevsky, M.¹, AuthorTchetchelnitski, S.¹, AuthorThompson, G.¹, AuthorThompson, P. D.¹, AuthorTobien, N.¹, AuthorTraynor, D.¹, AuthorTruol, P.¹, AuthorTsipolitis, G.¹, AuthorTsurin, I.¹, AuthorTurnau, J.¹, AuthorTurney, J. E.¹, AuthorTzamariudaki, E.¹, AuthorUdluft, S.¹, AuthorUrban, M.¹, AuthorUsik, A.¹, AuthorValkar, S.¹, AuthorValkarova, A.¹, AuthorVallee, C.¹, AuthorVan Mechelen, P.¹, AuthorVassiliev, S.¹, AuthorVazdik, Y.¹, AuthorVichnevski, A.¹, AuthorWacker, K.¹, AuthorWagner, J.¹, AuthorWallny, R.¹, AuthorWaugh, B.¹, AuthorWeber, G.¹, AuthorWeber, M.³, Author Wegener, D.¹, AuthorWerner, C.¹, AuthorWerner, M.¹, AuthorWerner, N.¹, AuthorWessels, M.¹, AuthorWhite, G.¹, AuthorWiesand, S.¹, AuthorWilksen, T.¹, AuthorWinde, M.¹, AuthorWinter, G. G.¹, AuthorWissing, C.¹, AuthorWobisch, M.¹, AuthorWoehrling, E. E.¹, AuthorWunsch, E.¹, AuthorWyatt, A. C.¹, AuthorZacek, J.¹, AuthorZalesak, J.¹, AuthorZhang, Z.¹, AuthorZhokin, A.¹, AuthorZomer, F.¹, Authorzur Nedden, M.¹, Author more..

Affiliations:
1Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, Wuppertal, Germany; Rhein Westfal TH Aachen, Inst Phys 1, D-5100 Aachen, Germany; Rhein Westfal TH Aachen, Inst Phys 3, D-5100 Aachen, Germany; Univ Birmingham, Sch Phys & Space Res, Birmingham B15 2TT, W Midlands, England; ULB VUB, Interuniv Inst High Energies, Brussels, Belgium; Univ Antwerp, B-2020 Antwerp, Belgium; Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England; Inst Nucl Phys, Krakow, Poland; Univ Dortmund, Inst Phys, D-4600 Dortmund, Germany; CE Saclay, CEA, DSM, DAPNIA, Gif Sur Yvette, France; DESY, D-2000 Hamburg, Germany; Univ Hamburg, Inst Phys Expt, Hamburg, Germany; Univ Heidelberg, Inst Phys, Heidelberg, Germany; Univ Heidelberg, Kirchhoff Inst Phys, Heidelberg, Germany; Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany; Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia; Univ Lancaster, Sch Phys & Chem, Lancaster, England; Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England; Univ London Queen Mary & Westfield Coll, London E1 4NS, England; Lund Univ, Dept Phys, Lund, Sweden; Univ Manchester, Dept Phys, Manchester M13 9PL, Lancs, England; Univ Mediterranee, CPPM, CNRS, IN2P3, Marseille, France; Inst Theoret & Expt Phys, Moscow 117259, Russia; PN Lebedev Phys Inst, Moscow 117924, Russia; Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany; Univ Paris 11, LAL, IN2P3, CNRS, Orsay, France; Ecole Polytech, CNRS, LPNHE, IN2P3, F-91128 Palaiseau, France; Univ Paris 06, LPNHE, IN2P3, CNRS, Paris, France; Univ Paris 07, LPNHE, IN2P3, CNRS, Paris, France; Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic; Charles Univ, Fac Math & Phys, Prague, Czech Republic; Univ Roma Tre, Dipartimento Fis, Rome, Italy; INFN Roma 3, Rome, Italy; Paul Scherrer Inst, Villigen, Switzerland; Yerevan Phys Inst, Yerevan 375036, Armenia; DESY, Zeuthen, Germany; Swiss Fed Inst Technol, Inst Teilchenphys, Zurich, Switzerland; Univ Zurich, Inst Phys, Zurich, Switzerland; Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece; Berg Univ Gesamthsch Wuppertal, Rechenzentrum, Wuppertal, Germany; Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany; CINVESTAV, Dept Fis Ap, Merida, Yucatan, Venezuela; Univ PJ Safarik, Kosice, Slovakia; CERN, CH-1211 Geneva 23, Switzerland; CINVESTAV, Dept Fis, Mexico City 14000, DF, Mexico, ou_persistent22
2Prof. Bogdan Povh, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907545
3Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549

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Abstract: Dijet events in photon-proton collisions in which there is a large pseudorapidity separation, Deltaeta > 2.5 between the two highest E-T jets are studied with the H1 detector at HERA. The inclusive dijet cross sections are measured as functions of the longitudinal momentum fractions of the proton and photon which participate in the production of the jets, x(p)(jets) and x(gamma)(jets) respectively, Deltaeta, the pseudorapidity P separation between the two highest E-T jets, and E-T(gap), the total summed transverse energy between the jets. Rapidity gap events are defined as events in which E-T(gap) is less than E- T(cut), for E-T(cut) varied between jets 0.5 and 2.0 GeV. The fraction of dijet events with a rapidity gap is measured differentially in Deltaeta, x(p)(jets) and x(gamma)(jets). An excess of events with rapidity gaps at low values of E-T(cut) is observed above the expectation from standard photoproduction processes. This excess can be explained by the exchange of a strongly interacting colour singlet object between the jets.

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Language(s): eng - English

Dates: Date issued: 2002-08

Publication Status: Issued

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Rev. Type: Peer

Identifiers: eDoc: 31352
ISI: 000177679700001

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Title: European Physical Journal C

Alternative Title : Eur. Phys. J. C

Source Genre: Journal

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Pages: - Volume / Issue: 24 (4) Sequence Number: - Start / End Page: 517 - 527 Identifier: ISSN: 1434-6044