Photoproduction of K 0 and at HERA and aComparison with Deep Inelastic

C. Adlo,M. Anderson,V. Andreev,B. Andrieu,V. Arkadov,C. Arndt,I. Ayyaz,A. Babaev,Y. Ban,P. Baranov,E. Barrelet,R. Barschke,W. Bartel,U. Bassler,H. P. Beck,M. Beck,H.-J. Behrend,A. Belousov,Ch. Berger,G. Bernardi,G. Bertrand-Coremans,R. Beyer,P. Biddulph,P. Bispham,J. C. Bizot,K. Borras,F. Botterweck,V. Boudry,S. Bourov,A. Braemer,W. Braunschweig,V. Brisson,P. Bruel,D. Bruncko,C. Brune,R. Buchholz,A. Buniatian,S. Burke,M. J. Burton,G. Buschhorn,D. Calvet,A. J. Campbell,T. Carli,M. Charlet,D. Clarke,B. Clerbaux,S. Cocks,J. G. Contreras,C. Cormack,J. A. Coughlan,A. Courau,M.-C. Cousinou,B. E. Cox,G. Cozzika,D. G. Cussans,J. Cvach,S. Dagoret,J. B. Dainton,W. D. Dau,K. Daum,M. David,C. L. Davis,A. De Roeck,E. A. De Wolf,B. Delcourt,M. Dirkmann,P. Dixon,W. Dlugosz,C. Dollfus,K. T. Donovan,J. D. Dowell,H. B. Dreis,A. Droutskoi,J. Ebert,T. R. Ebert,G. Eckerlin,V. Efremenko,S. Egli,R. Eichler,F. Eisele,E. Eisenhandler,E. Elsen,M. Erdmann,A. B. Fahr,L. Favart,A. Fedotov,R. Felst,J. Feltesse,J. Ferencei,F. Ferrarotto,K. Flamm,M. Fleischer,M. Flieser,A. Fomenko,J. M. Foster,G. Franke,E. Gabathuler,K. Gabathuler,F. Gaede,J. Garvey,J. Gayler,M. Gebauer,R. Gerhards,A. Glazov,L. Goerlich,N. Gogitidze,M. Goldberg,D. Goldner,K. Golec-Biernat,B. Gonzalez-Pineiro,I. Gorelov,C. Grab,T. Greenshaw,G. Grindhammer,A. Gruber,C. Gruber,T. Hadig,D. Haidt,L. Hajduk,T. Haller,M. Hampel,W. J. Haynes,B. Heinemann,G. Heinzelmann,R. C. W. Henderson,H. Henschel,I. Herynek,M. F. Hess,K. Hewitt,K. H. Hiller,C. D. Hilton,J. Hladk,D. Ho mann,T. Holtom,R. Horisberger,V. L. Hudgson,M. H utte,M. Ibbotson,H. Itterbeck,A. Jacholkowska,C. Jacobsson,M. Jacquet,J. Janoth,D. M. Jansen,K. Johannsen,D. P. Johnson,H. Jung,P. I. P. Kalmus,M. Kander,D. Kant,U. Kathage,J. Katzy,H. H. Kaufmann,O. Kaufmann,M. Kausch,S. Kazarian,I. R. Kenyon,S. Kermiche,C. Keuker,C. Kiesling,M. Klein,C. Kleinwort,G. Knies,H. Kolanoski,S. D. Kolya,V. Korbel,P. Kostka,S. K. Kotelnikov,M. W. Krasny,H. Krehbiel,M. Kuhlen,J. Kurzh ofer,B. Laforge,M. P. J. Landon,W. Lange,U. Langenegger,A. Lebedev,F. Lehner,V. Lemaitre,S. Levonian,M. Lindstroem,F. Linsel,J. Lipinski,B. List,G. Lobo,J. W. Lomas,G. C. Lopez,V. Lubimov,L. Lytkin,N. Magnussen,E. Malinovski,P. Marage,J. Marks,R. Marshall,J. Martens,G. Martin,R. Martin,H.-U. Martyn,J. Martyniak,T. Mavroidis,S. J. Max eld,S. J. McMahon,A. Mehta,K. Meier,P. Merkel,F. Metlica,A. Meyer,H. Meyer,J. Meyer,P.-O. Meyer,A. Migliori,S. Mikocki,D. Milstead,J. Moeck,F. Moreau,J. V. Morris,E. Mroczko,T. Walter,V. Nagovizin,R. Nahnhauer,B. Naroska,Th. Naumann,P. R. Newman,D. Newton,H. K. Nguyen,T. C. Nicholls,F. Niebergall,C. Niebuhr,Ch. Niedzballa,H. Niggli,G. Nowak,T. Nunnemann,H. Oberlack

semanticscholar（2007）

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Abstract

Inclusive K 0 and photoproduction has been investigated at HERA with the H1 detector at an average photon-proton center of mass energy of 200 GeV in the transverse momentum range 0:5 < p t < 5 GeV. The production rates as a function of p t and center of mass rapidity are compared to those obtained in deep inelastic scattering at hQ 2 i = 23 GeV 2. A similar comparison is made of the rapidity spectra of charged particles. The rate of strangeness photoproduc-tion is compared with p p measurements. The observations are also compared with next-to-leading order QCD calculations and the predictions of a Monte Carlo model.

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