Viser treff 21-38 av 38

• #### 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 jet vetoes and azimuthal decorrelations in dijet events produced in $pp$ collisions at $\sqrt{s}$ = 7 TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-11)
Additional jet activity in dijet events is measured using $pp$ collisions at ATLAS at a centre-of-mass energy of 7 TeV, for jets reconstructed using the anti-kt algorithm with radius parameter R=0.6. This is done using ...
• #### 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 spin correlation in top-antitop quark events from proton-proton collisions at $\sqrt{s}=7$ TeV using the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-12-24)
Measurements of spin correlation in top quark pair production are presented using data collected with the ATLAS detector at the LHC with proton--proton collisions at a center-of-mass energy of 7 TeV, corresponding to an ...
• #### Observation of an excited B[± over c] meson state with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-11-21)
A search for excited states of the B[± over c] meson is performed using 4.9  fb[superscript −1] of 7 TeV and 19.2  fb[superscript −1] of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is ...
• #### Search for contact interactions and large extra dimensions in the dilepton channel using proton–proton collisions at √s=8 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-12-11)
A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton–proton collision dataset ...
• #### Search for high-mass dilepton resonances in $pp$ collisions at $\sqrt {s}$ = 8 TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-09)
The ATLAS detector at the Large Hadron Collider is used to search for high-mass resonances decaying to dielectron or dimuon final states. Results are presented from an analysis of proton--proton $pp$ collisions at a ...
• #### Search for long-lived neutral particles decaying into lepton jets in proton-proton collisions at √s= 8TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-11)
Several models of physics beyond the Standard Model predict neutral particles that decay into final states consisting of collimated jets of light leptons and hadrons (so-called “lepton jets”). These particles can also be ...
• #### Search for neutral Higgs bosons of the minimal supersymmetric standard model in pp collisions at √s= TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-11-12)
A search for the neutral Higgs bosons predicted by the Minimal Supersymmetric Standard Model (MSSM) is reported. The analysis is performed on data from proton-proton collisions at a centre-of-mass energy of 8TeV collected ...
• #### Search for new resonances in $W\gamma$ and $Z\gamma$ Final States in $pp$ Collisions at $\sqrt{s}=8\,\mathrm{TeV}$ with the ATLAS Detector ﻿

(Peer reviewed; Journal article, 2014-11-10)
• #### Search for scalar diphoton resonances in the mass range 65-600 GeV with the ATLAS detector in pp collision data at √s = 8  TeV ﻿

(Peer reviewed; Journal article, 2014-10-20)
A search for scalar particles decaying via narrow resonances into two photons in the mass range 65–600 GeV is performed using 20.3  fb⎻¹ of s√=8  TeV pp collision data collected with the ATLAS detector at the Large Hadron ...
• #### Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using √s=8 TeV proton-proton collision data ﻿

(Peer reviewed; Journal article, 2014-09)
A search for squarks and gluinos in final states containing high-pT jets, missing transverse momentum and no electrons or muons is presented. The data were recorded in 2012 by the ATLAS experiment in √s = 8TeV proton-proton ...
• #### Search for supersymmetry in events with large missing transverse momentum, jets, and at least one tau lepton in 20 fb−1 of √s = 8 TeV proton-proton collision data with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-09-18)
A search for supersymmetry (SUSY) in events with large missing transverse momentum, jets, at least one hadronically decaying tau lepton and zero or one additional light leptons (electron/muon), has been performed using ...
• #### Search for the lepton flavor violating decay Z →eμ in pp collisions at √s=8TeV with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-10-23)
The ATLAS detector at the Large Hadron Collider is used to search for the lepton flavor violating process Z→eμ in pp collisions using 20.3  fb⎻¹ of data collected at √s=8  TeV. An enhancement in the eμ invariant mass ...
• #### Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in √s = 8 TeV pp collisions with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2014-11)
The results of a search for top squark (stop) pair production in final states with one isolated lepton, jets, and missing transverse momentum are reported. The analysis is performed with proton-proton collision data at s√ ...