Measurement of Beauty Photoproduction near Threshold using Di-electron Events with the H1 Detector at HERA

Abstract : 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.
docType_s : Journal articles
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http://hal.in2p3.fr/in2p3-00711464
Contributor : Florès Sylvie <>
Submitted on : Monday, June 25, 2012 - 8:00:17 AM
Last modification on : Monday, June 25, 2012 - 8:00:17 AM

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F.D. Aaron, E. Barrelet, J.C. Bizot, V. Boudry, V. Brisson, et al.. Measurement of Beauty Photoproduction near Threshold using Di-electron Events with the H1 Detector at HERA. European Physical Journal C: Particles and Fields, EDP Sciences: EPJ, 2012, 72, pp.2148. <10.1140/epjc/s10052-012-2148-1>. <in2p3-00711464>

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