Photoproduction with a leading proton at HERA. - Université Pierre et Marie Curie Access content directly
Journal Articles Nuclear Physics B Year : 2001

Photoproduction with a leading proton at HERA.

C. Adloff , V. Andreev , B. Andrieu (1) , T. Anthonis , V. Arkadov , A. Astvatsatourov , I. Ayyaz , A. Babaev , J. Bahr , P. Baranov , E. Barrelet (2) , W. Bartel , P. Bate , A. Beglarian , O. Behnke , C. Beier , A. Belousov , T. Benisch , Christoph. Berger , T. Berndt , J.C. Bizot (3) , V. Boudry (1) , W. Braunschweig , V. Brisson (3) , H.B. Broker , D.P. Brown , W. Bruckner , Pascal Bruel (1) , D. Bruncko , J. Burger , F.W. Busser , A. Bunyatyan , Hans Burkhardt , A. Burrage , G. Buschhorn , A.J. Campbell , J. Cao (3) , T. Carli , S. Caron , E. Chabert (4) , D. Clarke , B. Clerbaux , C. Collard , J.G. Contreras , Y.R. Coppens , J.A. Coughlan , M.C. Cousinou (4) , B.E. Cox , G. Cozzika , J. Cvach , J.B. Dainton , W.D. Dau , K. Daum , M. Davidsson , B. Delcourt (3) , N. Delerue (4) , R. Demirchyan , A. de Roeck , E.A. de Wolf , C. Diaconu (4) , P. Dixon , V. Dodonov , J.D. Dowell , A. Droutskoi , C. Duprel , G. Eckerlin , D. Eckstein , V. Efremenko , S. Egli , R. Eichler , F. Eisele , E. Eisenhandler , M. Ellerbrock , E. Elsen , M. Erdmann , W. Erdmann , P.J.W. Faulkner , L. Favart , A. Fedotov , R. Felst , J. Ferencei , S. Ferron (1) , M. Fleischer , Y.H. Fleming , G. Flugge , A. Fomenko , I. Foresti , J. Formanek , J.M. Foster , G. Franke , E. Gabathuler , K. Gabathuler , J. Garvey , J. Gassner , J. Gayler , R. Gerhards , S. Ghazaryan , L. Goerlich , N. Gogitidze , M. Goldberg , C. Goodwin , C. Grab , H. Grassler , T. Greenshaw , G. Grindhammer , T. Hadig , D. Haidt , L. Hajduk , W.J. Haynes , B. Heinemann , G. Heinzelmann , R.C.W. Henderson , S. Hengstmann , H. Henschel , R. Heremans , G. Herrera , I. Herynek , M. Hildebrandt , M. Hilgers , K.H. Hiller , J. Hladky , P. Hoting , D. Hoffmann (4) , R. Horisberger , S. Hurling , M. Ibbotson , M. Jacquet (3) , M. Jaffre (3) , L. Janauschek , D.M. Jansen , X. Janssen , V. Jemanov , L. Jonsson , D.P. Johnson , M.A.S. Jones , H. Jung , H.K. Kastli , D. Kant , M. Kapichine , M. Karlsson , O. Karschnick , F. Keil , N. Keller , J. Kennedy , I.R. Kenyon , S. Kermiche (4) , C. Kiesling , P. Kjellberg , M. Klein , C. Kleinwort , G. Knies , B. Koblitz , S.D. Kolya , V. Korbel , P. Kostka , S.K. Kotelnikov , R. Koutouev , A. Koutov , M.W. Krasny , H. Krehbiel , J. Kroseberg , K. Kruger , A. Kupper , T. Kuhr , T. Kurca , R. Lahmann , D. Lamb , M.P.J. Landon , W. Lange , T. Lastovicka , P. Laycock , E. Lebailly (3) , A. A. Lebedev , B. Leiner , R. Lemrani , V. Lendermann , S. Levonian (1) , M. Lindstroem , B. List , E. Lobodzinska , B. Lobodzinski , A. Loginov , N. Loktionova , V. Lubimov , S. Luders , D. Luke , L. Lytkin , N. Magnussen , H. Mahlke-Kruger , N. Malden , E. Malinovski , I. Malinovski , R. Maracek , P. Marage , J. Marks , R. Marshall , H.U. Martyn , J. Martyniak , S.J. Maxeld , A. Mehta , K. Meier , P. Merkel , A.B. Meyer , H. Meyer , J. Meyer (1) , P.O. Meyer , S. Mikocki , D. Milstead , T. Mkrtchyan , R. Mohr , S. Mohrdieck , M.N. Mondragon , F. Moreau , A. Morozov , J.V. Morris , K. Muller , P. Murin , V. Nagovizin , B. Naroska , J. Naumann , T. Naumann , G. Nellen , P.R. Newman , T.C. Nicholls , F. Niebergall , C. Niebuhr , O. Nix , G. Nowak , T. Nunnemann , J.E. Olsson , D. Ozerov , V. Panassik , C. Pascaud (3) , G.D. Patel , Emile Perez , J.P. Phillips , D. Pitzl , R. Poschl (3) , I. Potachnikova , B. Povh , K. Rabbertz , G. Radel , J. Rauschenberger , P. Reimer , B. Reisert , D. Reyna , S. Riess , C. Risler , E. Rizvi , P. Robmann , R. Roosen , A. Rostovtsev , C. Royon , S. Rusakov , K. Rybicki , D.P.C. Sankey , J. Scheins , F.P. Schilling , P. Schleper , D. Schmidt , S. Schmitt , L. Schoeffel , A. Schoning , T. Schorner , V. Schroder , H.C. Schultz-Coulon , C. Schwanenberger , K. Sedlak , F. Sefkow , V. Shekelyan , I. Sheviakov , L.N. Shtarkov , P. Sievers , Y. Sirois (1) , T. Sloan , P. Smirnov , V. Solochenko , Y. Soloviev , V. Spaskov , A. Specka (1) , H. Spitzer , R. Stamen , J. Steinhart , B. Stella , A. Stellberger , J. Stiewe , U. Straumann , W. Struczinski , M. Swart , M. Tasevsky , V. Tchernyshov , S. Tchetchelnitski , Graham. Thompson , P.D. Thompson , N. Tobien , D. Traynor , P. Truol , G. Tsipolitis , I. Tsurin , J. Turnau , J.E. Turney , E. Tzamariudaki , S. Udluft , A. Usik , S. Valkar , A. Valkarova , C. Vallee (4) , P. van Mechelen , S. Vassiliev , Y. Vazdik , A. Vichnevski , K. Wacker , R. Wallny , T. Walter , B. Waugh , G. Weber , M. Weber , D. Wegener , M. Werner , G. White , S. Wiesand , T. Wilksen , M. Winde , G.G. Winter , C. Wissing , M. Wobisch , H. Wollatz , E. Wunsch , A.C. Wyatt , J. Zacek , J. Zalesak , Zhiqing Zhang (3) , A. Zhokin , F. Zomer (3) , J. Zsembery , M. Zur Nedden
C. Adloff
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V. Andreev
  • Function : Author
T. Anthonis
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V. Arkadov
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A. Astvatsatourov
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I. Ayyaz
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A. Babaev
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J. Bahr
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P. Baranov
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W. Bartel
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P. Bate
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A. Beglarian
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O. Behnke
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C. Beier
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A. Belousov
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T. Benisch
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Christoph. Berger
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T. Berndt
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V. Boudry
W. Braunschweig
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H.B. Broker
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D.P. Brown
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W. Bruckner
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D. Bruncko
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J. Burger
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F.W. Busser
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A. Bunyatyan
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Hans Burkhardt
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A. Burrage
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G. Buschhorn
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A.J. Campbell
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T. Carli
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S. Caron
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D. Clarke
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B. Clerbaux
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C. Collard
J.G. Contreras
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Y.R. Coppens
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J.A. Coughlan
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B.E. Cox
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G. Cozzika
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J. Cvach
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J.B. Dainton
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W.D. Dau
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K. Daum
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M. Davidsson
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N. Delerue
R. Demirchyan
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K.H. Hiller
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G.G. Winter
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C. Wissing
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E. Wunsch
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A.C. Wyatt
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J. Zacek
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J. Zalesak
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Zhiqing Zhang
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A. Zhokin
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J. Zsembery
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M. Zur Nedden
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Abstract

The total cross section for the photoproduction process with a leading proton in the final state has been measured at p centre-of-mass energies W of 91, 181 and 231GeV. The measured cross sections apply to the kinematic range with the transverse momentum of the scattered proton restricted to pT 0.2GeV and 0.68z0.88, where z=Ep´/Ep is the scattered proton energy normalised to the beam energy. The cross section dpXp´(W,z)/dz is observed to be independent of W and z within the measurement errors and amounts to (8.05±0.06(stat)±0.89(syst)) µb on average. The data are well described by a Triple Regge model in which the process is mediated by a mixture of exchanges with an effective Regge trajectory of intercept i(0)=0.33±0.04(stat)±0.04(syst). The total cross section for the interaction of the photon with this mixture (iX) can be described by an effective trajectory of intercept k(0)=0.99±0.01(stat)±0.05(syst). Predictions based on previous triple Regge analyses of pppX data assuming vertex factorisation are broadly consistent with the p data. The measured cross sections are compared with deep inelastic scattering leading proton data in the same region of z and pT for photon virtuality Q2>2.5GeV2. The ratio of the cross section for leading proton production to the total cross section is found to rise with Q2.
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Dates and versions

in2p3-00011169 , version 1 (01-02-2002)

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  • HAL Id : in2p3-00011169 , version 1

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C. Adloff, V. Andreev, B. Andrieu, T. Anthonis, V. Arkadov, et al.. Photoproduction with a leading proton at HERA.. Nuclear Physics B, 2001, 619, pp.3-21. ⟨in2p3-00011169⟩
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