T. Guillemin

Muon reconstruction performance of the ATLAS detector in proton-proton collision data at √s=13 TeV

This article documents the performance of the ATLAS muon identification and reconstruction using the LHC dataset recorded at √ s = 13 TeV in 2015. Using a large sample of J/ψ → μμ and Z → μμ decays from 3.2 fb−1 of pp collision data, measurements of the reconstruction efficiency, as well as of the momentum scale and resolution, are presented and compared to Monte Carlo simulations. The reconstruction efficiency is measured to be close to 99 % over most of the covered phase space (|η| < 2.5 and 5 < pT < 100 GeV). The isolation efficiency varies between 93 and 100 % depending on the selection applied and on the momentum of the muon. Both efficiencies are well reproduced in simulation. In the central region of the detector, the momentum resolution is measured to be 1.7 % (2.3 %) for muons from J/ψ → μμ (Z → μμ) decays, and the momentum scale is known with an uncertainty of 0.05 %. In the region |η| > 2.2, the pT resolution for muons from Z → μμ decays is 2.9 % while the precision of the momentum scale for low-pT muons from J/ψ → μμ decays is about 0.2 %.

Measurement of the inclusive jet cross section in p pbar collisions at sqrt(s)=1.96 TeV

We report on a measurement of the inclusive jet cross section in pp collisions at a center-of-mass energy √s = 1.96 TeV using data collected by the DO experiment at the Fermilab Tevatron Collider corresponding to an integrated luminosity of 0.70 fb -1 . The data cover jet transverse momenta from 50 to 600 GeV and jet rapidities in the range -2.4 to 2.4. Detailed studies of correlations between systematic uncertainties in transverse momentum and rapidity are presented, and the cross section measurements are found to be in good agreement with next-to-leading order QCD calculations.

Measurement of the

A bstractA measurement of the ZZ production cross section in the ℓ−ℓ+ℓ′ −ℓ′ + and ℓ−ℓ+νν¯

production cross section in

{\ell}^{-}{\ell}^{+}\nu \overline{\nu}

collisions at

channels (ℓ = e, μ) in proton-proton collisions at s=8

= 8 TeV using the

\sqrt{s}=8