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D$^{\star\pm}$ meson production in deep-inelastic diffractive interactions at HERA

C. Adloff V. Andreev B. Andrieu 1 T. Anthonis V. Arkadov A. Astvatsatourov A. Babaev J. Bahr P. Baranov E. Barrelet 2 W. Bartel P. Bate J. Becker A. Beglarian O. Behnke C. Beier A. Belousov T. Benisch C. Berger T. Berndt J.C. Bizot 3 J. Boehme V. Boudry 1 W. Braunschweig V. Brisson 3 H.B. Broker D.P. Brown W. Bruckner D. Bruncko J. Burger F.W. Busser A. Bunyatyan A. Burrage G. Buschhorn L. Bystritskaya A.J. Campbell J. Cao 3 S. Caron F. Cassol-Brunner 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 J. Dingfelder P. Dixon V. Dodonov J.D. Dowell A. Droutskoi A. Dubak 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 G. Franke E. Gabathuler K. Gabathuler J. Garvey J. Gassner J. Gayler R. Gerhards C. Gerlich S. Ghazaryan L. Goerlich N. Gogitidze M. Goldberg C. Grab H. Grassler T. Greenshaw G. Grindhammer T. Hadig D. Haidt L. Hajduk J. Haller 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 X. Janssen V. Jemanov L. Jonsson C. Johnson D.P. Johnson M.A.S. Jones H. Jung 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 T. Kluge G. Knies B. Koblitz S.D. Kolya V. Korbel P. Kostka S.K. Kotelnikov R. Koutouev A. Koutov 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. Lebedev B. Leiner R. Lemrani V. Lendermann S. Levonian M. Lindstroem B. List E. Lobodzinska B. Lobodzinski A. Loginov N. Loktionova V. Lubimov S. Luders D. Luke L. Lytkin 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 D. Meer A. Mehta K. Meier A.B. Meyer H. Meyer J. Meyer P.O. Meyer S. Mikocki D. Milstead T. Mkrtchyan R. Mohr S. Mohrdieck M.N. Mondragon F. Moreau 1 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 J.E. Olsson D. Ozerov V. Panassik C. Pascaud 3 G.D. Patel M. Peez 4 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 C. Risler E. Rizvi P. Robmann R. Roosen A. Rostovtsev S. Rusakov K. Rybicki D.P.C. Sankey J. Scheins F.P. Schilling P. Schleper D. Schmidt S. Schmidt S. Schmitt M. Schneider 4 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 Y. Sirois 1 T. Sloan P. Smirnov Y. Soloviev D. South V. Spaskov A. Specka 1 H. Spitzer R. Stamen B. Stella J. Stiewe U. Straumann 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 Martin Urban A. Usik S. Valkar A. Valkarova C. Vallee 4 P. van Mechelen S. Vassiliev Y. Vazdik A. Vichnevski K. Wacker R. Wallny B. Waugh G. Weber M. Weber D. Wegener C. Werner M. Werner N. Werner G. White S. Wiesand T. Wilksen M. Winde G.G. Winter C. Wissing M. Wobisch E.E. Woehrling E. Wunsch A.C. Wyatt J. Zacek J. Zalesak Zhiqing Zhang 3 A. Zhokin F. Zomer 3 J. Zsembery M. Zur Nedden
Abstract : A measurement is presented of the cross section for D* meson production in diffractive deep-inelastic scattering for the first time at HERA. The cross section is given for the process ep -> eXY, where the system X contains at least one D* meson and is separated by a large rapidity gap from a low mass proton remnant system Y. The cross section is presented in the diffractive deep-inelastic region defined by 2 Q^2 100 GeV^2, 0.05 y 0.7, x_pom 0.04, M_Y 1.6 GeV and |t| 1 GeV^2. The D* mesons are restricted to the range ptD* 2 GeV and |\eta_D* | 1.5. The cross section is found to be 246+-54+-56 pb and forms about 6% of the corresponding inclusive D* cross section. The cross section is presented as a function of various kinematic variables, including z_pom^obs which is an estimate of the fraction of the momentum of the diffractive exchange carried by the parton entering the hard-subprocess. The data show a large component of the cross section at low z_pom^obs where the contribution of the Boson-Gluon-Fusion process is expected to dominate. The data are compared with several QCD--based calculations.
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C. Adloff, V. Andreev, B. Andrieu, T. Anthonis, V. Arkadov, et al.. D$^{\star\pm}$ meson production in deep-inelastic diffractive interactions at HERA. Physics Letters B, Elsevier, 2001, 520, pp.191-203. ⟨in2p3-00011174⟩

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