ATLAS Preprints

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2014-04-17
12:24

Muon reconstruction efﬁciency and momentum resolution of the ATLAS experiment in proton–proton collisions at $\sqrt{s}=7$ TeV in 2010 / ATLAS Collaboration
This paper presents a study of the performance of the muon reconstruction in the analysis of proton--proton collisions at $\sqrt{s}=7$ TeV at the LHC, recorded by the ATLAS detector in 2010. [...]
CERN-PH-EP-2013-154 ; arXiv:1404.4562. - 2014. - 22 p.
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2014-04-09
13:28

Search for supersymmetry at $\sqrt{s}=8$ TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector / ATLAS Collaboration
A search for strongly produced supersymmetric particles is conducted using signatures involving multiple energetic jets and either two isolated leptons ($e$ or $\mu$) with the same electric charge, or at least three isolated leptons. [...]
CERN-PH-EP-2014-044 ; arXiv:1404.2500. - 2014. - 35 p.
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2014-04-08
18:16

Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton--proton collision data / ATLAS Collaboration
The electron reconstruction and identification efficiencies of the ATLAS detector at the LHC have been evaluated using proton--proton collision data collected in 2011 at $\sqrt{s} = 7$ TeV and corresponding to an integrated luminosity of 4.7 fb$^{-1}$ [...]
CERN-PH-EP-2014-040 ; arXiv:1404.2240. - 2014. - 38 p.
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2014-04-04
11:44

Measurement of the low-mass Drell--Yan differential cross section at √s = 7 TeV using the ATLAS detector / ATLAS Collaboration
The differential cross section for the process $Z/\gamma^*\rightarrow \ell\ell$ ($\ell=e,\mu$) as a function of dilepton invariant mass is measured in $pp$ collisions at $\sqrt{s}=7$ TeV at the LHC using the ATLAS detector. [...]
CERN-PH-EP-2014-020 ; arXiv:1404.1212. - 2014. - 32 p.
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2014-04-03
20:10

Measurement of the parity-violating asymmetry parameter $\alpha_b$ and the helicity amplitudes for the decay $\Lambda_b^0\to J/\psi\Lambda^0$ with the ATLAS detector / ATLAS Collaboration
A measurement of the parity-violating decay asymmetry parameter, $\alpha_b$, and the helicity amplitudes for the decay $\Lambda_b^0\to J/\psi(\mu^+\mu^-) \Lambda^0 (p\pi^-)$ is reported. [...]
CERN-PH-EP-2014-034 ; arXiv:1404.1071. - 2014. - 12 p.
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2014-04-01
00:12

Search for dark matter in events with a $Z$ boson and missing transverse momentum in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector / ATLAS Collaboration
A search is presented for production of dark matter particles recoiling against a leptonically decaying $Z$ boson in 20.3 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector at the Large Hadron Collider. [...]
arXiv:1404.0051 ; CERN-PH-EP-2013-231. - 2014. - 8 p.
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2014-03-25
10:14

Search for top quark decays $t \rightarrow qH$ with $H \to \gamma\gamma$ using the ATLAS detector / ATLAS Collaboration
A search is performed for flavour-changing neutral currents in the decay of a top quark to an up-type ($c, u$) quark and a Higgs boson, where the Higgs boson decays to two photons. [...]
arXiv:1403.6293 ; CERN-PH-EP-2014-036. - 2014. - 45 p.
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2014-03-21
22:45

Particle production and long-range correlations in p+Pb collisions with the ATLAS detector / Milov, Alexander (Weizmann Inst.)
The ATLAS experiment at the LHC has measured the centrality dependence of charged particle pseudorapidity distribution, charged particle spectra, and the two-particle correlations in $p$+Pb collisions at a nucleon-nucleon centre-of-mass energy of $\sqrt{s_{NN}}=5.02$ TeV. [...]
arXiv:1403.5738 ; ATL-PHYS-PROC-2014-017. - 2014. - 6 p.
Original Communication (restricted to ATLAS) - Full text - Preprint

2014-03-21
21:57

Measurement of the 4$\ell$ Cross Section at the $Z$ Resonance and Determination of the Branching Fraction of $Z\rightarrow 4\ell$ in $pp$ Collisions at $\sqrt{s}$ = 7 and 8 TeV with ATLAS / ATLAS Collaboration
Measurements of four-lepton (4$\ell$, $\ell=e,\mu$) production cross sections at the $Z$ resonance in $pp$ collisions at the LHC with the ATLAS detector are presented. [...]
arXiv:1403.5657 ; CERN-PH-EP-2014-047. - 2014. - 20 p.
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2014-03-20
21:21

Search for direct production of charginos, neutralinos and sleptons in final states with two leptons and missing transverse momentum in $pp$ collisions at $\sqrt{s}$=8 TeV with the ATLAS detector / ATLAS Collaboration
Searches for the electroweak production of charginos, neutralinos and sleptons in final states characterized by the presence of two leptons (electrons and muons) and missing transverse momentum are performed using 20.3 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}$=8 TeV recorded with the ATLAS experiment at the Large Hadron Collider. [...]
arXiv:1403.5294 ; CERN-PH-EP-2014-037. - 2014. - 53 p.
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