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
Search for single top-quark production via flavour-changing neutral currents at...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationA search for single top-quark production via flavour-changing neutral current processes from gluon plus up- or charm-quark initial states in proton–proton collisions at the LHC is presented. Data collected with the ATLAS detector in 2012 at a centre-of-mass energy of 8 TeV and corresponding to an integrated luminosity of 20.3 fb−1 are used. Candidate events for a top quark decaying into a lepton, a neutrino and...
Reconstruction of hadronic decay products of tau leptons with the ATLAS experiment
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThis paper presents a new method of reconstructing the individual charged and neutral hadrons in tau decays with the ATLAS detector. The reconstructed hadrons are used to classify the decay mode and to calculate the visible four-momentum of reconstructed tau candidates, significantly improving the resolution with respect to the calibration in the existing tau reconstruction. The performance of the reconstructio...
Measurement of the inclusive isolated prompt photon cross section in pp collisi...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationA measurement of the cross section for the inclusive production of isolated prompt photons in proton-proton collisions at a centre-of-mass energy of √s=8 TeV is presented. The measurement covers the pseudorapidity ranges |ηγ | < 1.37 and 1.56 ≤ |ηγ | < 2.37 in the transverse energy range 25 < ETγ < 1500 GeV. The results are based on an integrated luminosity of 20.2 fb−1, recorded by the ATLAS detector at the LH...
Searches for heavy diboson resonances in pp collisions at root S=13 TeV with th...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationSearches for new heavy resonances decaying to WW, WZ, and ZZ bosons are presented, using a data sample corresponding to 3.2 fb−1 of pp collisions at s√=13 TeV collected with the ATLAS detector at the CERN Large Hadron Collider. Analyses selecting ννqq, ℓνqq, ℓℓqq and qqqq final states are combined, searching for an arrow-width resonance with mass between 500 and 3000 GeV. The discriminating variable is either a...
Search for charged Higgs bosons in the H-+/- -> tb decay channel in pp collisio...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationCharged Higgs bosons heavier than the top quark and decaying via H± → tb are searched for in proton-proton collisions measured with the ATLAS experiment at s√=8 TeV corresponding to an integrated luminosity of 20.3fb−1. The production of a charged Higgs boson in association with a top quark, gb → tH±, is explored in the mass range 200 to 600 GeV using multi-jet final states with one electron or muon. In order t...
Study of the B-c(+) -> J/psi D-s(+) and Bc(+) -> J/psi D-s*(+) decays with the ...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThe decays B+c→J/ψD+s and B+c→J/ψD∗+s are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 and 20.6 fb−1 of pp collisions collected at centre-of-mass energies √s=7 TeV and 8 TeV, respectively. Signal candidates are identified through J/ψ→μ+μ− and D(∗)+s→ϕπ+(γ/π0) decays. With a two-dimensional likelihood fit involving the B+c reconstructed invariant mass...
Charged-particle distributions in s=13 TeV pp interactions measured with the AT...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationCharged-particle distributions are measured in proton–proton collisions at a centre-of-mass energy of 13 TeV, using a data sample of nearly 9 million events, corresponding to an integrated luminosity of 170 μb−1170 μb−1, recorded by the ATLAS detector during a special Large Hadron Collider fill. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity and the dependence of the...
Observation of Long-Range Elliptic Azimuthal Anisotropies in s =13 and 2.76 TeV...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationATLAS has measured two-particle correlations as a function of the relative azimuthal angle, Δϕ, and pseudorapidity, Δη, in s√=13 and 2.76 TeV pp collisions at the LHC using charged particles measured in the pseudorapidity interval |η|<2.5. The correlation functions evaluated in different intervals of measured charged-particle multiplicity show a multiplicity-dependent enhancement at Δϕ∼0 that extends over a wid...
Measurement of the top quark mass in the tt¯→dilepton channel from s=8 TeV ATLA...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThe top quark mass is measured in the View the MathML sourcett¯→dilepton channel (lepton=e,μlepton=e,μ) using ATLAS data recorded in the year 2012 at the LHC. The data were taken at a proton–proton centre-of-mass energy of View the MathML sources=8 TeV and correspond to an integrated luminosity of about 20.2 fb−120.2 fb−1. Exploiting the template method, and using the distribution of invariant masses of lepton–...
Searches for scalar leptoquarks in pp collisions at root s=8TeV with the ATLAS ...
Onofre, A.; Castro, Nuno Filipe; ATLAS CollaborationSearches for pair-produced scalar leptoquarks are performed using 20 fb−1 of proton–proton collision data provided by the LHC and recorded by the ATLAS detector at √s=8 TeV. Events with two electrons (muons) and two or more jets in the final state are used to search for first (second)-generation leptoquarks. The results from two previously published ATLAS analyses are interpreted in terms of third-generation le...
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