Measurement of Charm and Beauty Dijet Cross Sections in Photoproduction at HERA using the H1 Vertex Detector - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles European Physical Journal C: Particles and Fields Year : 2006

Measurement of Charm and Beauty Dijet Cross Sections in Photoproduction at HERA using the H1 Vertex Detector

A. Aktas , V. Andreev , T. Anthonis , S. Aplin , A. Asmone , A. Astvatsatourov , A. Babaev , S. Backovic , J. Bahr , A. Baghdasaryan , P. Baranov , E. Barrelet (1) , W. Bartel , S. Baudrand (2) , S. Baumgartner , J. Becker , M. Beckingham , O. Behnke , O. Behrendt , A. Belousov , Ch. Berger , N. Berger , J.C. Bizot (2) , M.-O. Boenig , V. Boudry (3) , J. Bracinik , G. Brandt , V. Brisson (2) , D.P. Brown , D. Bruncko , F.W. Busser , 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 , J. Cvach , J.B. Dainton , W.D. Dau , K. Daum , Y. de Boer , B. Delcourt (2) , A. de Roeck , K. Desch , E.A. de Wolf , C. Diaconu (4) , V. Dodonov , A. Dubak , G. Eckerlin , V. Efremenko , S. Egli , R. Eichler , F. Eisele , M. Ellerbrock , W. Erdmann , S. Essenov , A. Falkewicz , P.J.W. Faulkner , L. Favart , A. Fedotov , R. Felst , J. Ferencei , L. Finke , M. Fleischer , P. Fleischmann , Y.H. Fleming , G. Flucke , A. Fomenko , I. Foresti , 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. Goyon , C. Grab , T. Greenshaw , M. Gregori , B.R. Grell , G. Grindhammer , C. Gwilliam , D. Haidt , L. Hajduk , M. Hansson , G. Heinzelmann , R.C.W. Henderson , H. Henschel , O. Henshaw , 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) , L. Janauschek , X. Janssen , V. Jemanov , L. Jonsson , D.P. Johnson , A.W. Jung , H. Jung , M. Kapichine , J. Katzy , N. Keller , 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. Kruger , J. Kuckens , M.P.J. Landon , W. Lange , T. Lastovicka , G. Lastovicka-Medin , P. Laycock , A. A. Lebedev , G. Leibenguth , V. Lendermann , S. Levonian , L. Lindfeld , K. Lipka , A. Liptaj , B. List , E. Lobodzinska , N. Loktionova , R. Lopez-Fernandez , V. Lubimov , A.-I. Lucaci-Timoce , H. Lueders , D. Luke , T. Lux , L. Lytkin , A. Makankine , N. Malden , E. Malinovski , S. Mangano , P. Marage , R. Marshall , M. Martisikova , H.-U. Martyn , S.J. Maxfield , D. Meer , A. Mehta , K. Meier , A.B. Meyer , H. Meyer , J. Meyer , S. Mikocki , I. Milcewicz-Mika , D. Milstead , D. Mladenov , A. Mohamed , F. Moreau (3) , A. Morozov , J.V. Morris , M.U. Mozer , K. Muller , P. Murin , K. Nankov , B. Naroska , T. Naumann , P.R. Newman , C. Niebuhr , A. Nikiforov , D. Nikitin , G. 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 , M. Peez , Emile Perez , D. Perez-Astudillo , A. Perieanu , A. Petrukhin , D. Pitzl , R. Placakyte , B. Portheault (2) , B. Povh , P. Prideaux , 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 , E. Sauvan (4) , S. Schätzel , F.-P. Schilling , S. Schmidt , S. Schmitt , C. Schmitz , L. Schoeffel , A. Schoning , H.-C. Schultz-Coulon , K. Sedlak , F. Sefkow , R.N. Shaw-West , I. Sheviakov , L.N. Shtarkov , T. Sloan , P. Smirnov , Y. Soloviev , D. South , V. Spaskov , A. Specka (3) , B. Stella , J. Stiewe , I. Strauch , U. Straumann , V. Tchoulakov , G. Thompson , P.D. Thompson , F. Tomasz , D. Traynor , P. Truol , I. Tsakov , G. Tsipolitis , I. Tsurin , J. Turnau , E. Tzamariudaki , Martin Urban , A. Usik , D. Utkin , S. Valkar , A. Valkarova , C. Vallee (4) , P. van Mechelen , A. Vargas Trevino , Y. Vazdik , C. Veelken , A. Vest , S. Vinokurova , V. Volchinski , B. Vujicic , K. Wacker , J. Wagner , G. Weber , R. Weber , D. Wegener , C. Werner , N. Werner , M. Wessels , B. Wessling , C. Wigmore , C. Wissing , R. Wolf , E. Wunsch , S. Xella , W. Yan , V. Yeganov , J. Zacek , J. Zalesak , Zhiqing Zhang (2) , A. Zhelezov , A. Zhokin , Y.C. Zhu , J. Zimmermann , T. Zimmermann , H. Zohrabyan , F. Zomer (2)
A. Aktas
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V. Andreev
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T. Anthonis
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S. Aplin
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A. Asmone
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A. Astvatsatourov
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A. Babaev
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S. Backovic
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J. Bahr
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A. Baghdasaryan
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P. Baranov
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W. Bartel
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S. Baumgartner
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J. Becker
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M. Beckingham
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O. Behnke
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O. Behrendt
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A. Belousov
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Ch. Berger
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N. Berger
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M.-O. Boenig
  • Function : Author
V. Boudry
J. Bracinik
  • Function : Author
G. Brandt
  • Function : Author
D.P. Brown
  • Function : Author
D. Bruncko
  • Function : Author
F.W. Busser
  • Function : Author
A. Bunyatyan
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G. Buschhorn
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L. Bystritskaya
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A.J. Campbell
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S. Caron
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K. Cerny
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V. Cerny
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V. Chekelian
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J.G. Contreras
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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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Y. de Boer
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A. de Roeck
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K. Desch
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E.A. de Wolf
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V. Dodonov
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A. Dubak
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G. Eckerlin
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V. Efremenko
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S. Egli
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R. Eichler
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F. Eisele
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M. Ellerbrock
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W. Erdmann
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S. Essenov
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A. Falkewicz
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P.J.W. Faulkner
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L. Favart
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A. Fedotov
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R. Felst
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J. Ferencei
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L. Finke
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M. Fleischer
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P. Fleischmann
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Y.H. Fleming
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G. Flucke
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A. Fomenko
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I. Foresti
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G. Franke
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T. Frisson
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E. Gabathuler
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E. Garutti
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J. Gayler
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C. Gerlich
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S. Ghazaryan
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S. Ginzburgskaya
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A. Glazov
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I. Glushkov
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L. Goerlich
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M. Goettlich
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N. Gogitidze
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S. Gorbounov
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C. Goyon
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C. Grab
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T. Greenshaw
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M. Gregori
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B.R. Grell
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G. Grindhammer
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C. Gwilliam
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D. Haidt
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L. Hajduk
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M. Hansson
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G. Heinzelmann
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R.C.W. Henderson
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H. Henschel
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O. Henshaw
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G. Herrera
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M. Hildebrandt
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K.H. Hiller
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R. Horisberger
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A. Hovhannisyan
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T. Hreus
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S. Hussain
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M. Ibbotson
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M. Ismail
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L. Janauschek
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X. Janssen
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V. Jemanov
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L. Jonsson
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D.P. Johnson
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A.W. Jung
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H. Jung
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M. Kapichine
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J. Katzy
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N. Keller
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I.R. Kenyon
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C. Kiesling
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M. Klein
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C. Kleinwort
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T. Klimkovich
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T. Kluge
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G. Knies
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A. Knutsson
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V. Korbel
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P. Kostka
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K. Krastev
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J. Kretzschmar
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A. Kropivnitskaya
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K. Kruger
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J. Kuckens
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M.P.J. Landon
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W. Lange
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T. Lastovicka
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G. Lastovicka-Medin
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P. Laycock
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A. A. Lebedev
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G. Leibenguth
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V. Lendermann
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S. Levonian
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L. Lindfeld
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K. Lipka
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A. Liptaj
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B. List
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E. Lobodzinska
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N. Loktionova
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R. Lopez-Fernandez
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V. Lubimov
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A.-I. Lucaci-Timoce
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H. Lueders
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D. Luke
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T. Lux
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L. Lytkin
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A. Makankine
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N. Malden
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E. Malinovski
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S. Mangano
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P. Marage
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R. Marshall
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M. Martisikova
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H.-U. Martyn
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S.J. Maxfield
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D. Meer
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A. Mehta
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K. Meier
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A.B. Meyer
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H. Meyer
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J. Meyer
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S. Mikocki
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I. Milcewicz-Mika
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D. Milstead
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D. Mladenov
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A. Mohamed
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A. Morozov
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J.V. Morris
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M.U. Mozer
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K. Muller
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P. Murin
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K. Nankov
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B. Naroska
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T. Naumann
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P.R. Newman
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C. Niebuhr
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A. Nikiforov
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D. Nikitin
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G. Nowak
M. Nozicka
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R. Oganezov
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B. Olivier
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J.E. Olsson
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S. Osman
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D. Ozerov
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V. Palichik
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I. Panagoulias
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T. Papadopoulou
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G.D. Patel
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M. Peez
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Emile Perez
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D. Perez-Astudillo
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A. Perieanu
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A. Petrukhin
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D. Pitzl
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R. Placakyte
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B. Povh
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P. Prideaux
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N. Raicevic
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P. Reimer
A. Rimmer
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C. Risler
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E. Rizvi
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P. Robmann
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R. Roosen
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A. Rostovtsev
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S. Rusakov
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F. Salvaire
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D.P.C. Sankey
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S. Schätzel
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F.-P. Schilling
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S. Schmidt
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S. Schmitt
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C. Schmitz
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L. Schoeffel
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A. Schoning
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H.-C. Schultz-Coulon
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K. Sedlak
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F. Sefkow
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R.N. Shaw-West
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Martin Urban
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D. Utkin
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S. Valkar
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A. Valkarova
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C. Veelken
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N. Werner
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M. Wessels
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B. Wessling
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C. Wissing
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R. Wolf
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E. Wunsch
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S. Xella
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W. Yan
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V. Yeganov
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J. Zacek
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J. Zalesak
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Zhiqing Zhang
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A. Zhelezov
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A. Zhokin
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Y.C. Zhu
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J. Zimmermann
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T. Zimmermann
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H. Zohrabyan
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Abstract

A measurement of charm and beauty dijet photoproduction cross sections at the ep collider HERA is presented. Events are selected with two or more jets of transverse momentum $p_t^{jet}_{1(2)}>11(8)$ GeV in the central range of pseudo-rapidity $-0.9<\eta^{jet}_{1(2)}<1.3$. The fractions of events containing charm and beauty quarks are determined using a method based on the impact parameter, in the transverse plane, of tracks to the primary vertex, as measured by the H1 central vertex detector. Differential dijet cross sections for charm and beauty, and their relative contributions to the flavour inclusive dijet photoproduction cross section, are measured as a function of the transverse momentum of the leading jet, the average pseudo-rapidity of the two jets and the observable $x_{\gamma}^{obs}$. Taking into account the theoretical uncertainties, the charm cross sections are consistent with a QCD calculation in next-to-leading order, while the predicted cross sections for beauty production are somewhat lower than the measurement.

Dates and versions

in2p3-00079453 , version 1 (08-01-2007)

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Cite

A. Aktas, V. Andreev, T. Anthonis, S. Aplin, A. Asmone, et al.. Measurement of Charm and Beauty Dijet Cross Sections in Photoproduction at HERA using the H1 Vertex Detector. European Physical Journal C: Particles and Fields, 2006, 47, pp.597-610. ⟨10.1140/epjc/s2006-02616-5⟩. ⟨in2p3-00079453⟩
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