Project/scholarship details


  • 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


A search for t(t)over-bar resonances using lepton-plus-jets events in proton-pr...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

A search for new particles that decay into top quark pairs is reported. The search is performed with the ATLAS experiment at the LHC using an integrated luminosity of 20.3 fb−1 of proton-proton collision data collected at a centre-of-mass energy of s√=8 TeV. The lepton-plus-jets final state is used, where the top pair decays to W+bW−b¯¯, with one W boson decaying leptonically and the other hadronically. The inv...


Searches for heavy long-lived charged particles with the ATLAS detector in prot...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

Searches for heavy long-lived charged particles are performed using a data sample of 19.8 fb−1 from proton--proton collisions at a centre-of-mass energy of s√ = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. No excess is observed above the estimated background and limits are placed on the mass of long-lived particles in various supersymmetric models. Long-lived tau sleptons in models with g...


Measurement of the WW+WZ cross section and limits on anomalous triple gauge cou...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

The production of a W boson decaying to eν or μν in association with a W or Z boson decaying to two jets is studied using 4.6 fb−1 of proton--proton collision data at s√=7 TeV recorded with the ATLAS detector at the LHC. The combined WW+WZ cross section is measured with a significance of 3.4σ and is found to be 68±7 (stat.)±19 (syst.) pb, in agreement with the Standard Model expectation of 61.1±2.2 pb. The dist...


Search for the bb¯ decay of the Standard Model Higgs boson in associated (W/Z)H...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

A search for the bb¯ decay of the Standard Model Higgs boson is performed with the ATLAS experiment using the full dataset recorded at the LHC in Run 1. The integrated luminosities used from pp collisions at s√=7 and 8 TeV are 4.7 and 20.3 fb−1, respectively. The processes considered are associated (W/Z)H production, where W→eν/μν, Z→ee/μμ and Z→νν. The observed (expected) deviation from the background-only hyp...


Measurement of the forward-backward asymmetry of electron and muon pair-product...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp→Z/γ∗→l+l−, with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at s√ = 7 TeV, corresponding to an integrated luminosity of 4.8 fb−1. The measured asymmetry values are found t...


Search for heavy long-lived multi-charged particles in pp collisions at √s = 8 ...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2012 at s√=8 TeV from pp collisions corresponding to an integrated luminosity of 20.3 fb−1 are examined. Particles producing anomalously high ionisation, consistent with long-lived massive particles with electric charges from |q|=2e to |q|=6e are searched for. No signal candidate events are ...


Measurement of three-jet production cross-sections in pp collisions at 7 TeV ce...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

Double-differential three-jet production cross-sections are measured in proton--proton collisions at a centre-of-mass energy of s√=7TeV using the ATLAS detector at the Large Hadron Collider. The measurements are presented as a function of the three-jet mass (mjjj), in bins of the sum of the absolute rapidity separations between the three leading jets (|Y∗|). Invariant masses extending up to 5 TeV are reached fo...


Search for squarks and gluinos in events with isolated leptons, jets and missin...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

The results of a search for supersymmetry in final states containing at least one isolated lepton (electron or muon), jets and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider (LHC) are reported. The search is based on proton-proton collision data at a centre-of-mass energy s√=8 TeV collected in 2012, corresponding to an integrated luminosity of 20 fb−1. No significant exce...


Summary of the searches for squarks and gluinos using root s=8 TeV pp collision...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

A summary is presented of ATLAS searches for gluinos and first- and second-generation squarks in final states containing jets and missing transverse momentum, with or without leptons or b-jets, in the s√=8 TeV data set collected at the Large Hadron Collider in 2012. This paper reports the results of new interpretations and statistical combinations of previously published analyses, as well as a new analysis. Sin...


Search for production of WW/WZ resonances decaying to a lepton, neutrino and je...

Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration

A search is presented for a narrow diboson resonances decaying to WW or WZ in the final state where one W boson decays leptonically (to an electron or a muon plus a neutrino) and the other W/Z boson decays hadronically. The analysis is performed using an integrated luminosity of 20.3 fb−1 of pp collisions at s√ = 8 TeV collected by the ATLAS detector at the LHC. No evidence for resonant diboson production is ob...

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