ATLAS Notes

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2015-03-25
23:26
 A study of the sensitivity to the Pythia8 parton shower parameters of $t\bar{t}$ production measurements in $pp$ collisions at $\sqrt{s} = 7$ TeV with the ATLAS experiment at the LHC Various measurements of $t\bar{t}$ observables, performed by the ATLAS experiment in $pp$ collisions at $\sqrt{s} = 7$ TeV, are used to constrain the initial- and final-state radiation parameters of the Pythia8 Monte Carlo. [...] ATL-PHYS-PUB-2015-007. - 2015. Original Communication (restricted to ATLAS) - Full text

2015-03-24
16:47
 A search for $B-L$ $R$-Parity violating scalar top decays in $\sqrt{s} = 8$ TeV $pp$ collisions with the ATLAS experiment A search is presented for direct scalar top pair production where the scalar tops decay via an $R$-parity-violating coupling to a final state with two leptons and two identified $b$-jets. [...] ATLAS-CONF-2015-015. - 2015. - 19 p. Original Communication (restricted to ATLAS) - Full text

2015-03-24
15:08
 Study of the $B_c^+ \to J/\psi D_s^+$ and $B_c^+ \to J/\psi D_s^{*+}$ decays with the ATLAS detector The decays $B_c^+ \to J/\psi D_s^+$ and $B_c^+ \to J/\psi D_s^{*+}$ are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 fb$^{-1}$ and 20.6 fb$^{-1}$ of $pp$ collisions collected at centre-of-mass energies $\sqrt{s} = 7$ and $8$ TeV, respectively. [...] ATLAS-CONF-2015-014. - 2015. - 17 p. Original Communication (restricted to ATLAS) - Full text

2015-03-24
14:24
 Noise dependency with pile-up in the ATLAS Tile Calorimeter / Araque Espinosa, Juan Pedro (Laboratorio de Instrumentacao e Fisica Experimental de Particulas (LIP)) ; Castro, Nuno Filipe (Laboratorio de Instrumentacao e Fisica Experimental de Particulas (LIP)) The Tile Calorimeter, TileCal, is the central hadronic calorimeter of the ATLAS experiment, positioned between the electromagnetic calorimeter and the muon chambers. [...] ATL-TILECAL-PROC-2015-001. - 2015. - 4 p. Original Communication (restricted to ATLAS) - Full text

2015-03-22
08:59
 The Optimization of ATLAS Track Reconstruction in Dense Environments This note presents recent changes in the ATLAS track reconstruction chain derived from detailed studies of track reconstruction in dense environments. [...] ATL-PHYS-PUB-2015-006. - 2015. Original Communication (restricted to ATLAS) - Full text

2015-03-22
08:52
 Expected sensitivity studies for gluino and squark searches using the early LHC 13 TeV Run-2 dataset with the ATLAS experiment The current searches in the LHC Run-1 dataset have yielded sensitivity to TeV scale gluinos, as well as to third generation squarks in the hundreds of GeV mass range. [...] ATL-PHYS-PUB-2015-005. - 2015. - 18 p. Original Communication (restricted to ATLAS) - Full text - Full text

2015-03-21
01:04
 Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at sqrt (s) = 8 TeV using the ATLAS experiment Many extensions of the Standard Model predict the existence of charged and heavy long-lived particles, such as R-hadrons or charginos. [...] ATLAS-CONF-2015-013. - 2015. Original Communication (restricted to ATLAS) - Full text

2015-03-20
17:46
 Search for production of vector-like quark pairs and of four top quarks in the lepton plus jets final state in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector A search is presented for pair production of vector-like quarks, both up-type ($T$) and down-type ($B$), as well as for four-top-quark production. [...] ATLAS-CONF-2015-012. - 2015. Original Communication (restricted to ATLAS) - Full text

2015-03-20
17:43
 Combination of searches for strongly-produced supersymmetric particles with the ATLAS detector in proton-proton collision data at $\sqrt{s}$=8 TeV This note presents the combination of three ATLAS searches for squarks and gluinos in 20 $fb^{−1}$ of proton-proton collisions at $\sqrt{s}$=8 TeV. [...] ATLAS-CONF-2015-011. - 2015. - 8 p. Original Communication (restricted to ATLAS) - Full text

2015-03-20
17:41
 Statistical combination of all-hadronic and one-lepton analyses targeting scalar top pair production using proton-proton collisions at √ s = 8 TeV with the ATLAS detector A statistical combination of two analyses targeting direct stop pair production and requiring respectively no leptons and one lepton in the final state is presented. [...] ATLAS-CONF-2015-010. - 2015. - 11 p. Original Communication (restricted to ATLAS) - Full text

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ATLAS PUB Notes (2,590)