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Measurement of the Diffractive Deep-Inelastic Scattering Cross Section with a Leading Proton at HERA

F.D. Aaron C. Alexa V. Andreev S. Backovic A. Baghdasaryan S. Baghdasaryan E. Barrelet 1 W. Bartel K. Begzsuren A. Belousov J.C. Bizot 2 V. Boudry 3 I. Bozovic-Jelisavcic J. Bracinik G. Brandt M. Brinkmann V. Brisson 2 D. Britzger D. Bruncko A. Bunyatyan G. Buschhorn L. Bystritskaya A.J. Campbell K.B. Cantun Avila F. Ceccopieri K. Cerny V. Cerny V. Chekelian A. Cholewa J.G. Contreras J.A. Coughlan J. Cvach J.B. Dainton K. Daum B. Delcourt 2 J. Delvax E.A. de Wolf C. Diaconu 4 M. Dobre V. Dodonov A. Dossanov A. Dubak G. Eckerlin S. Egli A. Eliseev E. Elsen L. Favart A. Fedotov R. Felst J. Feltesse 5 J. Ferencei D.-J. Fischer M. Fleischer A. Fomenko E. Gabathuler J. Gayler S. Ghazaryan A. Glazov L. Goerlich N. Gogitidze M. Gouzevitch C. Grab A. Grebenyuk T. Greenshaw B.R. Grell G. Grindhammer S. Habib D. Haidt C. Helebrant R.C.W. Henderson E. Hennekemper H. Henschel M. Herbst G. Herrera M. Hildebrandt K.H. Hiller D. Hoffmann 4 R. Horisberger T. Hreus F. Huber M. Jacquet 2 X. Janssen L. Jönsson A.W. Jung H. Jung M. Kapichine J. Katzy I.R. Kenyon C. Kiesling M. Klein C. Kleinwort T. Kluge A. Knutsson R. Kogler P. Kostka M. Kraemer J. Kretzschmar K. Krüuger K. Kutak M.P.J. Landon W. Lange G. Lastovicka-Medin P. Laycock A. Lebedev V. Lendermann S. Levonian K. Lipka B. List J. List N. Loktionova R. Lopez-Fernandez V. Lubimov A. Makankine E. Malinovski P. Marage H.-U. Martyn S.J. Maxfield A. Mehta A.B. Meyer H. Meyer J. Meyer S. Mikocki I. Milcewicz-Mika F. Moreau 3 A. Morozov J.V. Morris M.U. Mozer M. Mudrinic K. Müuller Th. Naumann P.R. Newman C. Niebuhr D. Nikitin G. Nowak K. Nowak J.E. Olsson S. Osman D. Ozerov P. Pahl V. Palichik I. Panagouliasl M. Pandurovic Th. Papadopouloul C. Pascaud 2 G.D. Patel E. Perez 5 A. Petrukhin I. Picuric S. Piec H. Pirumov D. Pitzl R. Placakyte B. Pokorny R. Polifka B. Povh V. Radescu N. Raicevic T. Ravdandorj P. Reimer E. Rizvi P. Robmann R. Roosen A. Rostovtsev M. Rotaru J.E. Ruiz Tabasco S. Rusakov D. Salek D.P.C. Sankey M. Sauter E. Sauvan 4 S. Schmitt L. Schoeffel 5 A. Schöoning H.-C. Schultz-Coulon F. Sefkow L.N. Shtarkov S. Shushkevich T. Sloan I. Smiljanic Y. Soloviev P. Sopicki D. South V. Spaskov A. Specka 3 Z. Staykova M. Steder B. Stella G. Stoicea U. Straumann D. Sunar T. Sykora G. Thompson P.D. Thompson T. Toll T.H. Tran 2 D. Traynor P. Truol I. Tsakov B. Tseepeldorj J. Turnau K. Urban A. Valkarova C. Vallee 4 P. van Mechelen Y. Vazdik M. von den Driesch D. Wegener E. Wunsch J. Zacek J. Zalesak Zhiqing Zhang 2 A. Zhokin H. Zohrabyan F. Zomer 2
Abstract : The cross section for the diffractive deep-inelastic scattering process ep -> e X p is measured, with the leading final state proton detected in the H1 Forward Proton Spectrometer. The data sample covers the range x_pom<0.1 in fractional proton longitudinal momentum loss, 0.1 < |t| < 0.7 GeV^2 in squared four-momentum transfer at the proton vertex and 4 < Q^2 < 700 GeV^2 in photon virtuality. The cross section is measured four-fold differentially in t, x_pom, Q^2 and beta=x/x_pom, where x is the Bjorken scaling variable. The t and x_pom dependences are interpreted in terms of an effective pomeron trajectory and a sub-leading exchange. The data are compared to perturbative QCD predictions at next-to-leading order based on diffractive parton distribution functions previously extracted from complementary measurements of inclusive diffractive deep-inelastic scattering. The ratio of the diffractive to the inclusive ep cross section is studied as a function of Q^2, beta and x_pom.
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Preprints, Working Papers, ...
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http://hal.in2p3.fr/in2p3-00546059
Contributor : Sabine Starita <>
Submitted on : Monday, December 13, 2010 - 3:35:54 PM
Last modification on : Wednesday, September 16, 2020 - 4:22:21 PM

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  • HAL Id : in2p3-00546059, version 1
  • ARXIV : 1010.1476

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F.D. Aaron, C. Alexa, V. Andreev, S. Backovic, A. Baghdasaryan, et al.. Measurement of the Diffractive Deep-Inelastic Scattering Cross Section with a Leading Proton at HERA. 2010. ⟨in2p3-00546059⟩

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