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T: Fachverband Teilchenphysik

T 19: Top-Quarks: Produktion II

T 19.1: Vortrag

Montag, 19. März 2018, 16:00–16:15, Z6 - SR 2.011

Measurements of cross-sections of t t production with additional heavy-flavour jets in the eµ channel in proton-proton collisions at √s = 13 TeV with the ATLAS detector — •Akanksha Vishwakarma — DESY

Measurements of normalized cross-sections of top quark pair production in association with additional b-jets in proton-proton collisions at a centre-of-mass energy of 13 TeV collected by the ATLAS experiment are presented. The analysis is performed in dilepton channel by requiring an opposite-charge eµ pair using 36.1 fb⁻¹ of pp collision data. Normalised differential cross-sections of top-quark pair production are presented as functions of additional b-jet multiplicity, transverse momentum p_T , the scalar sum of transverse momenta of leptons and jets H_T, and scalar sum of p_T of all jets H_had^T. All measurements are corrected for detector effects and presented as particle-level distributions compared to predictions with different theoretical approaches for QCD radiation.