| Thème(s) : |
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Physique/Physique des Hautes Energies - Expérience
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| Titre : |
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Measurement of Beauty Photoproduction near Threshold using Di-electron Events with the H1 Detector at HERA |
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| Auteur : |
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F.D. Aaron, E. Barrelet1, J.C. Bizot2, V. Boudry3, V. Brisson2, B. Delcourt2, C. Diaconu4, J. Feltesse5, M. Gouzevitch6, M. Jacquet2, F. Moreau3, C. Pascaud2, E. Perez5, E. Sauvan4, L. Schoeffel5, A. Specka3, T.H. Tran2, C. Vallée4, Z. Zhang2, F. Zomer2, D. Hoffmann4 |
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| Laboratoire : |
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| Résumé : |
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The cross section for ep -> e b\bar{b} X in photoproduction is measured with the H1 detector at the ep-collider HERA. The decay channel b\bar{b} -> ee X' is selected by identifying the semi-electronic decays of the b-quarks. The total production cross section is measured in the kinematic range given by the photon virtuality Q^2 <= 1 GeV^2, the inelasticity 0.05 <= y <= 0.65 and the pseudorapidity of the b-quarks |eta(b)|,|eta(\bar{b})| <= 2. The differential production cross section is measured as a function of the average transverse momentum of the beauty quarks down to the threshold. The results are compared to next-to-leading-order QCD predictions. |
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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) |
| Publisher |
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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2148 |
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| Commentaire : |
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34 pages, 6 tables, 12 figures ; see paper for full list of authors |
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