par Aaron, Francise;Favart, Laurent ;Ceccopieri, Federico ;Hreus, Tomas ; [et al.]
Référence European Physical Journal C. Particles and Fields, C72, page (2148), 1206.4346
Publication Publié, 2012
Référence European Physical Journal C. Particles and Fields, C72, page (2148), 1206.4346
Publication Publié, 2012
Article révisé par les pairs
Résumé : | The cross section for ep → ebb̄X in photoproduction is measured with the H1 detector at the ep-collider HERA. The decay channel bb̄ → eeX' 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 {pipe}η(b){pipe},{pipe}η(b){pipe}≤2. The differential production cross section is measured as a function of the average transverse momentum of the beauty quarks 〈P T(b)〉 down to the threshold. The results are compared to next-to-leading-order QCD predictions. © 2012 The Author(s). |