EPS-HEP 2017

Measurement of the bbar dijet cross section in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

Not scheduled

1m

Salone Adriatico (Palazzo del Casinò)

Board: QH-6

Poster Presentation QCD and Hadronic Physics Poster session

Speaker

Monica Verducci (Universita e INFN, Roma Tre (IT))

Description

The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in
proton--proton collisions with a centre-of-mass energy of 7 TeV, using the ATLAS
detector at the LHC. The data used correspond to an integrated luminosity of 4.2/fb.
The cross section is measured for events with two identified b-jets with a transverse
momentum pT > 20 GeV. At least one of the jets in the event is required to have pT > 270 GeV. The cross section is measured differentially as a function of dijet invariant mass, dijet transverse momentum, boost of the dijet system and the rapidity difference, azimuthal angle and angular distance between the b-jets.
The results are compared to different predictions of leading order and next-to-leading order perturbative
quantum chromodynamics matrix elements supplemented with models for parton-showers and hadronization.