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 dark matter produced in association with a Higgs boson decaying to t...

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

This article reports on a search for dark matter pair production in association with a Higgs boson decaying to a pair of bottom quarks, using data from 20.3  fb−1 of pp collisions at a center-of-mass energy of 8 TeV collected by the ATLAS detector at the LHC. The decay of the Higgs boson is reconstructed as a high-momentum bb¯ system with either a pair of small-radius jets, or a single large-radius jet with sub...


Search for Higgs and Z Boson Decays to φγ with the ATLAS Detector

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

A search for the decays of the Higgs and Z bosons to a ϕ meson and a photon is performed with a pp collision data sample corresponding to an integrated luminosity of 2.7  fb−1 collected at s√=13  TeV with the ATLAS detector at the LHC. No significant excess of events is observed above the background, and 95% confidence level upper limits on the branching fractions of the Higgs and Z boson decays to ϕγ of 1.4×10...


Search for dark matter produced in association with a hadronically decaying vec...

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

A search is presented for dark matter produced in association with a hadronically decaying W or Z boson using 3.2 fb−1 of pp collisions at View the MathML sources=13 TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with a hadronic jet compatible with a W or Z boson and with large missing transverse momentum are analysed. The data are consistent with the Standard Model predictions and are ...


Search for metastable heavy charged particles with large ionization energy loss...

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

This paper presents a search for massive charged long-lived particles produced in pp collisions at s√=13  TeV at the LHC using the ATLAS experiment. The data set used corresponds to an integrated luminosity of 3.2  fb−1. Many extensions of the Standard Model predict the existence of massive charged long-lived particles, such as R-hadrons. These massive particles are expected to be produced with a velocity signi...


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...


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...


The Laser calibration of the ATLAS Tile Calorimeter during the LHC run 1

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

This article describes the Laser calibration system of the ATLAS hadronic Tile Calorimeter that has been used during the run 1 of the LHC . First, the stability of the system associated readout electronics is studied. It is found to be stable with variations smaller than 0.6 %. Then, the method developed to compute the calibration constants, to correct for the variations of the gain of the calorimeter photomult...


Search for new resonances in events with one lepton and missing transverse mome...

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

A search for W′W′ bosons in events with one lepton (electron or muon) and missing transverse momentum is presented. The search uses 3.2 fb−1 of pp collision data collected at View the MathML sources=13 TeV by the ATLAS experiment at the LHC in 2015. The transverse mass distribution is examined and no significant excess of events above the level expected from Standard Model processes is observed. Upper limits on...


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...


Combination of searches for WW, WZ, and ZZ resonances in pp collisions at s=8 T...

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

The ATLAS experiment at the CERN Large Hadron Collider has performed searches for new, heavy bosons decaying to WW, WZ and ZZ final states in multiple decay channels using 20.3 fb−120.3 fb−1 of pp collision data at View the MathML sources=8 TeV. In the current study, the results of these searches are combined to provide a more stringent test of models predicting heavy resonances with couplings to vector bosons....

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