Now showing items 1-17 of 17

• #### ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at $\sqrt{s}$=7 TeV ﻿

(Peer reviewed; Journal article, 2013-01)
Mass and angular distributions of dijets produced in LHC proton-proton collisions at a centre-of-mass energy $\sqrt{s}$=7 TeV have been studied with the ATLAS detector using the full 2011 data set with an integrated ...
• #### Flavour tagged time dependent angular analysis of the $B_s^{0} \rightarrow J/\psi \phi$ decay and extraction of $\Delta\Gamma_s$ and the weak phase $\phi_s$ in ATLAS ﻿

(Peer reviewed; Journal article, 2014-09)
A measurement of the $B_s ^{0}\rightarrow J/\psi \phi$ decay parameters, updated to include flavour tagging is reported using $4.9 fb^{-1}$ of integrated luminosity collected by the ATLAS detector from $\sqrt{s}= ... • #### Measurement of isolated-photon pair production in pp collisions at root s=7 TeV with the ATLAS detector ﻿ (Peer reviewed; Journal article, 2013-01-11) The ATLAS experiment at the LHC has measured the production cross section of events with two isolated photons in the final state, in proton-proton collisions at s√=7TeV. The full data set collected in 2011, corresponding ... • #### Measurement of the azimuthal anisotropy for charged particle production in \(\sqrt{s_{NN}}$ = 2.76 TeV lead-lead collisions with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2012-07-24)
Differential measurements of charged particle azimuthal anisotropy are presented for lead-lead collisions at $\sqrt{s_{NN}}$ = 2.76 TeV with the ATLAS detector at the LHC, based on an integrated luminosity of approximately ...
• #### Measurement of the b-hadron production cross section using decays to D*+ μ − X final states in pp collisions at √s = 7 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2012-11-21)
The b-hadron production cross section is measured with the ATLAS detector in pp collisions at √s = 7 TeV, using 3.3 pb−1 of integrated luminosity, collected during the 2010 LHC run. The b-hadrons are selected by partially ...
• #### Measurement of the inclusive jet cross-section in proton-proton collisions at $\sqrt{s}=7$ TeV using 4.5 fb−1 of data with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2015-02-24)
The inclusive jet cross-section is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using a data set corresponding to an integrated luminosity of 4.5 fb−1 collected with the ATLAS detector at the ...
• #### Measurement of the t(Formula Presented.) production cross-section as a function of jet multiplicity and jet transverse momentum in 7 TeV proton-proton collisions with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2015-01-08)
The tt⎯⎯ production cross-section dependence on jet multiplicity and jet transverse momentum is reported for proton-proton collisions at a centre-of-mass energy of 7 TeV in the single-lepton channel. The data were collected ...
• #### Measurements of four-lepton production at the Z resonance in pp collisions at √s = 7 and 8 TeV with ATLAS ﻿

(Peer reviewed; Journal article, 2014-06-13)
Measurements of four-lepton (4ℓ, ℓ=e,μ) production cross sections at the Z resonance in pp collisions at the LHC with the ATLAS detector are presented. For dilepton and four-lepton invariant mass regions mℓ+ℓ−>5  GeV and ...
• #### Measurements of normalized differential cross-sections for $t\bar{t}$ production in $pp$ collisions at $\sqrt{s}$=7 TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-10)
Measurements of normalized differential cross-sections for top-quark pair production are presented as a~function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the $t\bar{t}$ ...
• #### Measurements of top quark pair relative differential cross-sections with ATLAS in pp collisions at root s=7 TeV ﻿

(Peer reviewed; Journal article, 2013-01-15)
Measurements are presented of differential cross-sections for top quark pair production in pp collisions at s√=7 TeV relative to the total inclusive top quark pair production cross-section. A data sample of 2.05 fb−1 ...
• #### Muon reconstruction efficiency and momentum resolution of the ATLAS experiment in proton–proton collisions at √s=7 TeV in 2010 ﻿

(Peer reviewed; Journal article, 2014-09)
This paper presents a study of the performance of the muon reconstruction in the analysis of proton–proton collisions at √s = 7TeV at the LHC, recorded by the ATLAS detector in 2010. This performance is described in terms ...
• #### Search for direct chargino production in anomaly-mediated supersymmetry breaking models based on a disappearing-track signature in pp collisions at $\sqrt{s}$=7 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2013-01)
A search for direct chargino production in anomaly-mediated supersymmetry breaking scenarios is performed in pp collisions at $\sqrt{s}$ = 7 TeV using 4.7 fb$^{-1}$ of data collected with the ATLAS experiment at the ...
• #### Search for Higgs Boson Pair Production in the $\gamma\gamma b\bar{b}$ Final State using $pp$ Collision Data at $\sqrt{s}=8$TeV from the ATLAS Detector ﻿

(Peer reviewed; Journal article, 2015-02)
Searches are performed for resonant and non-resonant Higgs boson pair production in the $hh \rightarrow \gamma\gamma b \overline b$ final state using 20 fb$^{-1}$ of proton--proton collisions at a center-of-mass energy ...
• #### Search for pair-produced massive coloured scalars in four-jet final states with the ATLAS detector in proton-proton collisions at $\sqrt{s}$ = 7 TeV ﻿

(Peer reviewed; Journal article, 2013-01)
A search for pair-produced massive coloured scalar particles decaying to a four-jet final state is performed by the ATLAS experiment at the LHC in proton-proton collisions at $\sqrt{s}$ = 7 TeV. The analysed data sample ...
• #### Search for quantum black hole production in high-invariant-mass lepton + jet final states using pp collisions at √s = 8 TeV and the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-03-05)
This Letter presents a search for quantum black-hole production using 20.3  fb⎻¹ of data collected with the ATLAS detector in pp collisions at the LHC at √s=8  TeV. The quantum black holes are assumed to decay into a final ...
• #### Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at $\sqrt{s}$ = 7 TeV ﻿

(Peer reviewed; Journal article, 2013-01)
A search for resonances produced in 7 TeV proton-proton collisions and decaying into top-quark pairs is described. In this Letter events where the top-quark decay produces two massive jets with large transverse momenta ...
• #### Study of heavy-flavor quarks produced in association with top-quark pairs at √s =7 TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-04-21)
Using a sample of dilepton top-quark pair (tt¯) candidate events, a study is performed of the production of top-quark pairs together with heavy-flavor (HF) quarks, the sum of tt¯+b+X and tt¯+c+X, collectively referred to ...