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


Search for the electroweak production of supersymmetric particles in √s = 8 TeV...

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

The ATLAS experiment has performed extensive searches for the electroweak production of charginos, neutralinos, and staus. This article summarizes and extends the search for electroweak supersymmetry with new analyses targeting scenarios not covered by previously published searches. New searches use vector-boson fusion production, initial-state radiation jets, and low-momentum lepton final states, as well as mu...


Centrality, rapidity, and transverse momentum dependence of isolated prompt pho...

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

Prompt photon production in sNN−−−−√=2.76-TeV Pb+Pb collisions has been measured by the ATLAS experiment at the Large Hadron Collider using data collected in 2011 with an integrated luminosity of 0.14 nb−1. Inclusive photon yields, scaled by the mean nuclear thickness function, are presented as a function of collision centrality and transverse momentum in two pseudorapidity intervals, |η|<1.37 and 1.52≤|η|<2.37...


Measurement of D*±, D± and D<inf>s</inf>± meson production cross sections in pp...

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

The production of D⁎±D⁎±, D±D± and View the MathML sourceDs± charmed mesons has been measured with the ATLAS detector in pp collisions at View the MathML sources=7 TeV at the LHC, using data corresponding to an integrated luminosity of 280 nb−1280 nb−1. The charmed mesons have been reconstructed in the range of transverse momentum 3.5<pT(D)<100 GeV3.5<pT(D)<100 GeV and pseudorapidity |η(D)|<2.1|η(D)|<2.1. The d...


Measurement of the dependence of transverse energy production at large pseudora...

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

The relationship between jet production in the central region and the underlying-event activity in a pseudorapidity-separated region is studied in 4.0 pb−1 of View the MathML sources=2.76 TeVpp collision data recorded with the ATLAS detector at the LHC. The underlying event is characterised through measurements of the average value of the sum of the transverse energy at large pseudorapidity downstream of one of...


Search for flavour-changing neutral current top-quark decays to q Z in pp colli...

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

A search for the flavour-changing neutral-current decay t→qZ is presented. Data collected by the ATLAS detector during 2012 from proton–proton collisions at the Large Hadron Collider at a centre-of-mass energy of √s=8 TeV, corresponding to an integrated luminosity of 20.3 fb−1, are analysed. Top-quark pair-production events with one top quark decaying through the t→qZ (q=u,c) channel and the other through the d...


Measurements of four-lepton production in pp collisions at √s = 8 TeV with the ...

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

The four-lepton (4ℓ , ℓ=e,μℓ=e,μ) production cross section is measured in the mass range from 80 to 1000 GeV using 20.3 fb−1 of data in pp collisions at View the MathML sources=8 TeV collected with the ATLAS detector at the LHC. The 4ℓ events are produced in the decays of resonant Z and Higgs bosons and the non-resonant ZZ continuum originating from View the MathML sourceqq¯, gg, and qg initial states. A total ...


Measurement of event-shape observables in Z -> l(+)l(-) events in pp collisions...

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

Event-shape observables measured using charged particles in inclusive Z-boson events are presented, using the electron and muon decay modes of the Z bosons. The measurements are based on an integrated luminosity of 1.1 fb−1 of proton–proton collisions recorded by the ATLAS detector at the LHC at a centre-of-mass energy √s=7 TeV. Charged-particle distributions, excluding the lepton–antilepton pair from the Z-bos...


Search for high-mass new phenomena in the dilepton final state using proton–pro...

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

A search is conducted for both resonant and non-resonant high-mass new phenomena in dielectron and dimuon final states. The search uses View the MathML source3.2fb−1 of proton–proton collision data, collected at View the MathML sources=13TeV by the ATLAS experiment at the LHC in 2015. The dilepton invariant mass is used as the discriminating variable. No significant deviation from the Standard Model prediction ...


Luminosity determination in pp collisions at √s = 8 TeV using the ATLAS detecto...

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

The luminosity determination for the ATLAS detector at the LHC during pp collisions at √s= 8 TeV in 2012 is presented. The evaluation of the luminosity scale is performed using several luminometers, and comparisons between these luminosity detectors are made to assess the accuracy, consistency and long-term stability of the results. A luminosity uncertainty of δL/L=±1.9% is obtained for the 22.7fb−1 of pp colli...


Search for new phenomena with photon plus jet events in proton-proton collision...

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

A search is performed for the production of high-mass resonances decaying into a photon and a jet in 3.2 fb−1 of proton-proton collisions at a centre-of-mass energy of s√=13 TeV collected by the ATLAS detector at the Large Hadron Collider. Selected events have an isolated photon and a jet, each with transverse momentum above 150 GeV. No significant deviation of the γ+jet invariant mass distribution from the bac...

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