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Inclusive $D^{*\pm}$ meson cross sections and $D^{*\pm}$-jet correlations in photoproduction at HERA

A. Aktas V. Andreev T. Anthonis B. Antunovic S. Aplin A. Asmone A. Astvatsatourov A. Babaev S. Backovic A. Baghdasaryan P. Baranov E. Barrelet 1 W. Bartel S. Baudrand 2 S. Baumgartner M. Beckingham O. Behnke O. Behrendt A. Belousov N. Berger J.C. Bizot 2 M.-O. Boenig V. Boudry 3 J. Bracinik G. Brandt V. Brisson 2 D. Bruncko F.W. Büsser A. Bunyatyan G. Buschhorn L. Bystritskaya A.J. Campbell S. Caron F. Cassol-Brunner 4 K. Cerny V. Cerny V. Chekelian J.G. Contreras J.A. Coughlan B.E. Cox G. Cozzika 5 J. Cvach J.B. Dainton W.D. Dau K. Daum Y. de Boer B. Delcourt 2 M. del Degan A. de Roeck E.A. de Wolf C. Diaconu 4 V. Dodonov A. Dubak G. Eckerlin V. Efremenko S. Egli R. Eichler F. Eisele A. Eliseev E. Elsen S. Essenov A. Falkewicz P.J.W. Faulkner L. Favart A. Fedotov R. Felst J. Feltesse 5 J. Ferencei L. Finke M. Fleischer G. Flucke A. Fomenko G. Franke T. Frisson 3 E. Gabathuler E. Garutti J. Gayler C. Gerlich S. Ghazaryan S. Ginzburgskaya A. Glazov I. Glushkov L. Goerlich M. Goettlich N. Gogitidze S. Gorbounov C. Grab T. Greenshaw M. Gregori B.R. Grell G. Grindhammer C. Gwilliam S. Habib D. Haidt M. Hansson G. Heinzelmann R.C.W. Henderson H. Henschel G. Herrera M. Hildebrandt K.H. Hiller D. Hoffmann 4 R. Horisberger A. Hovhannisyan T. Hreus S. Hussain M. Ibbotson M. Ismail M. Jacquet 2 X. Janssen V. Jemanov L. Jönsson D.P. Johnson A.W. Jung H. Jung M. Kapichine J. Katzy I.R. Kenyon C. Kiesling M. Klein C. Kleinwort T. Klimkovich T. Kluge G. Knies A. Knutsson V. Korbel P. Kostka K. Krastev J. Kretzschmar A. Kropivnitskaya K. Krüger M.P.J. Landon W. Lange G. Lastovicka-Medin P. Laycock A. Lebedev G. Leibenguth V. Lendermann S. Levonian L. Lindfeld K. Lipka A. Liptaj B. List J. List E. Lobodzinska N. Loktionova R. Lopez-Fernandez V. Lubimov A.-I. Lucaci-Timoce H. Lueders T. Lux L. Lytkin A. Makankine N. Malden E. Malinovski P. Marage R. Marshall L. Marti M. Martisikova H.-U. Martyn S.J. Maxfield A. Mehta K. Meier A.B. Meyer H. Meyer J. Meyer V. Michels S. Mikocki I. Milcewicz-Mika D. Milstead D. Mladenov A. Mohamed F. Moreau 3 A. Morozov J.V. Morris M.U. Mozer K. Müller P. Murín K. Nankov B. Naroska T. Naumann P.R. Newman C. Niebuhr A. Nikiforov G. Nowak K. Nowak M. Nozicka R. Oganezov B. Olivier J.E. Olsson S. Osman D. Ozerov V. Palichik I. Panagoulias T. Papadopoulou C. Pascaud 2 G.D. Patel H. Peng Emile Perez 5 D. Perez-Astudillo A. Perieanu A. Petrukhin D. Pitzl R. Placakyte B. Portheault 2 B. Povh P. Prideaux A.J. Rahmat N. Raicevic P. Reimer A. Rimmer C. Risler E. Rizvi P. Robmann B. Roland R. Roosen A. Rostovtsev Z. Rurikova S. Rusakov F. Salvaire D.P.C. Sankey M. Sauter E. Sauvan 4 S. Schmidt S. Schmitt C. Schmitz L. Schoeffel 5 A. Schöning H.-C. Schultz-Coulon F. Sefkow R.N. Shaw-West I. Sheviakov L.N. Shtarkov T. Sloan P. Smirnov Y. Soloviev D. South V. Spaskov A. Specka 3 M. Steder B. Stella J. Stiewe A. Stoilov U. Straumann D. Sunar V. Tchoulakov G. Thompson P.D. Thompson T. Toll F. Tomasz D. Traynor T.N. Trinh 4 P. Truöl I. Tsakov G. Tsipolitis I. Tsurin J. Turnau E. Tzamariudaki K. Urban Martin Urban A. Usik D. Utkin A. Valkárová Corentin Vallée 4 P. van Mechelen A. Vargas Trevino Y. Vazdik C. Veelken S. Vinokurova V. Volchinski K. Wacker G. Weber R. Weber D. Wegener C. Werner M. Wessels B. Wessling C. Wissing R. Wolf E. Wünsch S. Xella W. Yan V. Yeganov J. Zácek J. Zálesák Zhiqing Zhang 2 A. Zhelezov A. Zhokin Y.C. Zhu J. Zimmermann T. Zimmermann H. Zohrabyan F. Zomer 2
Abstract : Differential photoproduction cross sections are measured for events containing D*± mesons. The data were taken with the H1 detector at the ep collider HERA and correspond to an integrated luminosity of 51.1 pb-1. The kinematic region covers small photon virtualities Q2 < 0.01 GeV2 and photon-proton centre-of-mass energies of 171 < Wγ p < 256 GeV. The details of the heavy quark production process are further investigated in events with one or two jets in addition to the D*± meson. Differential cross sections for D*+jet production are determined and the correlations between the D*± meson and the jet(s) are studied. The results are compared with perturbative QCD predictions applying collinear- or kt-factorisation.
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Submitted on : Friday, April 13, 2007 - 10:00:16 AM
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A. Aktas, V. Andreev, T. Anthonis, B. Antunovic, S. Aplin, et al.. Inclusive $D^{*\pm}$ meson cross sections and $D^{*\pm}$-jet correlations in photoproduction at HERA. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2007, 50, pp.251-267. ⟨10.1140/epjc/s10052-007-0220-z⟩. ⟨in2p3-00141148⟩

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