Project/scholarship details
- Project/scholarship ID
143069
- Reference
CERN/FIS-NUC/0005/2015
- FundRef URI
- Funder
FCT - Fundação para a Ciência e a Tecnologia, I.P.
- Funder's country
Portugal
- Funding program
3599-PPCDT
- Funding amount
400,000.00 €
- Start date
2015-03-01
- End date
2017-02-28
Documents
Erratum: Measurement of the inclusive jet cross-section in proton-proton collis...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationIt was found that the non-perturbative corrections calculated using Pythia with the Perugia 2011 tune did not include the effect of the underlying event. The affected correction factors were recomputed using the Pythia 6.427 generator. These corrections are applied as baseline to the NLO pQCD calculations and thus the central values of the theoretical predictions have changed by a few percent with the new corre...
Search for new phenomena in events with a photon and missing transverse momentu...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationResults of a search for new phenomena in events with an energetic photon and large missing transverse momentum with the ATLAS experiment at the LHC are reported. Data were collected in proton--proton collisions at a center-of-mass energy of 8 TeV and correspond to an integrated luminosity of 20.3 fb−1. The observed data are well described by the expected Standard Model backgrounds. The expected (observed) upper...
ATLAS Run 1 searches for direct pair production of third-generation squarks at ...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThis paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton--proton collisions collected by the ATLAS collaboration during the LHC Run 1. Most of the analyses use 20 fb−1 of collisions at a centre-of-mass energy of s√=8 TeV, although in some case an additional 4.7 fb−1 of collision data at s√=7 TeV are used. New analyses are...
Search for anomalous production of prompt same-sign lepton pairs and pair-produ...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationA low-background inclusive search for new physics in events with same-sign dileptons is presented. The search uses proton--proton collisions corresponding to 20.3 fb−1 of integrated luminosity taken in 2012 at a centre-of-mass energy of 8 TeV with the ATLAS detector at the LHC. Pairs of isolated leptons with the same electric charge and large transverse momenta of the type e±e±,e±μ±, and μ±μ± are selected and t...
Measurements of Higgs boson production and couplings in the four-lepton channel...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThe final ATLAS Run 1 measurements of Higgs boson production and couplings in the decay channel H→ZZ∗→ℓ+ℓ−ℓ′+ℓ′−, where ℓ,ℓ′=e or μ, are presented. These measurements were performed using pp collision data corresponding to integrated luminosities of 4.5 fb−1 and 20.3 fb−1 at center-of-mass energies of 7 TeV and 8 TeV, respectively, recorded with the ATLAS detector at the LHC. The H→ZZ∗→4ℓ signal is observed wit...
Search for Scalar-Charm Pair Production in pp Collisions at s√=8 TeV with the A...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThe results of a dedicated search for pair production of scalar partners of charm quarks are reported. The search is based on an integrated luminosity of 20.3fb−1 of pp collisions at s√=8 TeV recorded with the ATLAS detector at the LHC. The search is performed using events with large missing transverse momentum and at least two jets, where the two leading jets are each tagged as originating from c-quarks. Event...
Measurement of the top-quark mass in the fully hadronic decay channel from ATLA...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThe mass of the top quark is measured in a data set corresponding to 4.6 fb−1 of proton--proton collisions with centre-of-mass energy s√=7 TeV collected by the ATLAS detector at the LHC. Events consistent with hadronic decays of top--antitop quark pairs with at least six jets in the final state are selected. The substantial background from multijet production is modelled with data-driven methods that utilise th...
Search for W′→tb→qqbb Decays in pp Collisions at s√ = 8 TeV with the ATLAS Dete...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationA search for a massive W′ gauge boson is performed with the ATLAS detector at the LHC in pp collisions at a centre-of-mass energy of s√ = 8 TeV, corresponding to 20.3 fb−1 of integrated luminosity. This analysis is done in the W′→tb→qqbb mode for W′ masses above 1.5 TeV, where the W′ decay products are highly boosted. Novel jet substructure techniques are used to identify jets from high-momentum top quarks to e...
Measurement of transverse energy-energy correlations in multi-jet events in pp ...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationHigh transverse momentum jets produced in pp collisions at a centre of mass energy of 7 TeV are used to measure the transverse energy--energy correlation function and its associated azimuthal asymmetry. The data were recorded with the ATLAS detector at the LHC in the year 2011 and correspond to an integrated luminosity of 158 pb−1. The selection criteria demand the average transverse momentum of the two leading...
Z boson production in p plus Pb collisions at root S-NN=5.02 TeV measured with ...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThe ATLAS Collaboration measures the inclusive production of Z bosons via their decays into electron and muon pairs in p+Pb collisions at sNN−−−√=5.02TeV at the Large Hadron Collider. The measurements are made using data corresponding to integrated luminosities of 29.4 and 28.1 nb−1 for Z→ee and Z→μμ, respectively. The results from the two channels are consistent and combined to obtain a cross section times the...
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