[PDF] Top 20 Measurement of the inclusive isolated prompt photons cross section in pp collisions at $\sqrt{s}=7$  TeV with the ATLAS detector using 4.6  fb$^{−1}$

... to the parton-level isolation cut used in NLO QCD ...limit the non-perturbative fragmenta- tion contribution, which is poorly understood in theory, while retaining the signal produced ... See full document

... from pp collisions at √ s = 2.76 TeV with the CMS experiment corresponding to an in- tegrated luminosity of ...close the wide gap in jet ... See full document

... 4.9 fb −1 of data from pp collisions at a centre-of- mass energy of √ s = 7 TeV, the invariant mass distribu- tion of e + e − ... See full document

... corrected using an in-situ calibration based on the Z boson mass peak [ 25 ], and the determination of the pseudorapidities is optimized using the technique ... See full document

... rates using several ATLAS devices, where the absolute calibration is derived using van der Meer scans [ 62 ...]. The uncertainty on the luminosity is 3.4% [ 63 ]. The ... See full document

... . 4, using topological clusters as input. The calorimeter cell energies are measured at the EM scale, cor- responding to the energy deposited by electromagnetically inter- acting ... See full document

... distributions of the W+jets back- ground, which comprises contributions from W+heavy flavour jets (Wb ¯b+jets, Wc¯c+jets and Wc+jets) and W+light jets, are taken from samples of simulated events, ... See full document

... are inclusive with respect to additional ...tion with two leptonically decaying Z bosons and a third hadronically decaying weak boson and contributions from double parton scattering are included ... See full document

... variations of the analysis and dominate the precision of the ...from the difference between the constraints for the two arms, ...i.e. the difference between ... See full document

... use the CT10 [ 40 ] PDFs and a b-quark mass of ...generated with Powheg are passed through the Pythia ...showered with Herwig 6.520 [ 41 ]. Herwig 6 uses an angular ordering ... See full document

... resolution of the reconstructed J/ψ meson depend on p T (both varying by about 3% with p T in the studied region), but in the di-J/ψ sample there are not enough events to ... See full document

... generated using ALPGEN ...interactions of the proton remnants, referred to as ‘un- derlying event’ in the following, using the AUET2-CTEQ61L tune [ 20 ...]. In ... See full document

... GeV in the barrel and 4 GeV in the ...deposits in a cone of radius R = 0.15 are excluded from the sum, as well as tracks in a cone of radius R = ... See full document

... on the next-to-leading-order (NLO) matrix elements [ 11 , 12 ] with ...for the parton-level hard scattering in t ¯t production, and is interfaced to the H ERWIG ...simulation of ... See full document

... The ATLAS experiment [ 35 ] uses a general-purpose detector 1 consisting of an inner tracker, a calorimeter and a muon ...outline of the components that are most relevant ... See full document

... A measurement is presented of the cross section for the production of a W boson with one or two b-jets in proton-proton collisions at a ... See full document

... clusters in the electromagnetic calorimeter with transverse energies ex- ceeding ...measured in projective towers of 3×5 cells in η × φ in the second layer ... See full document

... measurements of the W ± Z production cross section in pp collisions at a centre-of- mass energy of √ s = 13 ...TeV. The data ... See full document

... 2.0. The ID is immersed in a 2 T magnetic field provided by the ...solenoid. The latter is surrounded by a hermetic calorimeter that covers |η| < ...reconstruction of particle ... See full document

... describes the measurement with the Compact Muon Solenoid (CMS) detector of the pp → Z/γ ∗ + b-jet cross section with Z/γ ∗ → `` (where `` = ee ... See full document