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


Measurements of photo-nuclear jet production in Pb + Pb collisions with ATLAS

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

Ultra-peripheral heavy ion collisions provide a unique opportunity to study the parton distributions in the colliding nuclei via the measurement of photo-nuclear jet production. An analysis of jet production in ultra-peripheral Pb+Pb collisions at performed using data collected with the ATLAS detector in 2015 is described. The data set corresponds to a total Pb+Pb integrated luminosity of . The ultra-peripheral...


Heavy Ion Results from ATLAS

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

These proceedings provide an overview of the new results obtained with the ATLAS detector at the LHC, which were presented in the Quark Matter 2017 conference. These results were covered by twelve parallel talks, one flash talk and eleven posters. These proceedings group these results into five areas: initial state, jet quenching, quarkonium production, longitudinal flow dynamics, and collectivity in small syst...


Search for new phenomena in high-mass diphoton final states using 37 fb−1 of pr...

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

© 2017 The Author(s) Searches for new phenomena in high-mass diphoton final states with the ATLAS experiment at the LHC are presented. The analysis is based on pp collision data corresponding to an integrated luminosity of 36.7 fb −1 at a centre-of-mass energy s=13 TeV recorded in 2015 and 2016. Searches are performed for resonances with spin 0, as predicted by theories with an extended Higgs sector, and for re...


Search for dark matter in association with a Higgs boson decaying to b-quarks i...

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

A search for dark matter pair production in association with a Higgs boson decaying to a pair of bottom quarks is presented, using 3.2 fb−1 of pp collisions at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the LHC. The decay of the Higgs boson is reconstructed as a high-momentum View the MathML sourcebb¯ system with either a pair of small-radius jets, or a single large-radius jet with sub...


Measurement of the W+W− production cross section in pp collisions at a centre-o...

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

The production of opposite-charge W-boson pairs in proton–proton collisions at TeV is measured using data corresponding to 3.16 fb−1 of integrated luminosity collected by the ATLAS detector at the CERN Large Hadron Collider in 2015. Candidate W-boson pairs are selected by identifying their leptonic decays into an electron, a muon and neutrinos. Events with reconstructed jets are not included in the candidate ev...


Measurements of integrated and differential cross sections for isolated photon ...

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

A measurement of the production cross section for two isolated photons in proton-proton collisions at a center-of-mass energy of √s=8  TeV is presented. The results are based on an integrated luminosity of 20.2  fb−1 recorded by the ATLAS detector at the Large Hadron Collider. The measurement considers photons with pseudorapidities satisfying |ηγ|<1.37 or 1.56<|ηγ|<2.37 and transverse energies of respectively E...


Measurement of the cross-section for producing a W boson in association with a ...

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

The inclusive cross-section for the associated production of a W boson and top quark is measured using data from proton-proton collisions at s√=13 TeV. The dataset corresponds to an integrated luminosity of 3.2 fb−1, and was collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are selected requiring two opposite sign isolated leptons and at least one jet; they are separated into ...


Search for resonances in the mass distribution of jet pairs with one or two jet...

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

A search for new resonances decaying into jets containing b-hadrons in pp collisions with the ATLAS detector at the LHC is presented in the dijet mass range from 0.57 to 7 TeV. The data set corresponds to an integrated luminosity of up to 36.1  fb−1 collected in 2015 and 2016 at √s=13  TeV. No evidence of a significant excess of events above the smooth background shape is found. Upper cross-section limits and l...


Measurement of the cross section for isolated-photon plus jet production in pp ...

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

The dynamics of isolated-photon production in association with a jet in proton–proton collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset with an integrated luminosity of 3.2 fb−1. Photons are required to have transverse energies above 125 GeV. Jets are identified using the anti- algorithm with radius parameter and required to have transverse momenta ab...

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