| Thème(s) : |
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Physique/Physique des Hautes Energies - Expérience
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| Titre : |
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Measurement of Inclusive and Dijet D* Meson Cross Sections in Photoproduction at HERA |
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| Auteur : |
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F.D. Aaron, E. Barrelet1, J.C. Bizot2, V. Brisson2, B. Delcourt2, M. Jacquet2, C. Pascaud2, T.H. Tran2, Z. Zhang2, F. Zomer2, V. Boudry3, F. Moreau3, A. Specka3, M. Gouzevitch4, C. Diaconu5, D. Hoffmann5, E. Sauvan6, C. Vallée5 |
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| Laboratoire : |
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| Résumé : |
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The inclusive photoproduction of D\ast mesons and of D\ast-tagged dijets is investigated with the H1 detector at the ep collider HERA. The kinematic region covers small photon virtualities Q2 < 2 GeV2 and photon-proton centre-of-mass energies of 100 < Wgp < 285 GeV. Inclusive D\ast meson differential cross sections are measured for central rapidities |eta(D\ast)| < 1.5 and transverse momenta pT (D\ast) > 1.8 GeV. The heavy quark production process is further investigated in events with at least two jets with transverse momentum pT (jet) > 3.5 GeV each, one containing the D\ast meson. Differential cross sections for D\ast-tagged dijet production and for correlations between the jets are measured in the range |eta(D\ast)| < 1.5 and pT (D\ast) > 2.1 GeV. The results are compared with predictions from Monte Carlo simulations and next-to-leading order perturbative QCD calculations. |
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| Collaboration/Projet : |
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H1 |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication ou d'écriture : |
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2012 |
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| Nom du périodique : |
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| European Physical Journal C: Particles and Fields (Eur. Phys. J. C) |
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EDP Sciences: EPJ |
| ISSN |
1434-6044 (eISSN : 1434-6052) |
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| Volume : |
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72 |
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| Page/Article : |
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1995 |
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| Identifiant local : |
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DESY-11-248 |
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| Commentaire : |
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36 pages, 10 figures, 8 tables, submitted to EPJC - See paper for full list of authors |
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