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 the standard model Higgs boson produced in association with a vector...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationA search for the standard model Higgs boson produced in association with a vector boson with the decay H→ττ is presented. The data correspond to 20.3 fb−1 of integrated luminosity from proton-proton collisions at s√=8 TeV recorded by the ATLAS experiment at the LHC during 2012. The data agree with the background expectation, and 95% confidence-level upper limits are placed on the cross section of this process...
Search for the Standard Model Higgs boson produced by vector-boson fusion and d...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationA search with the ATLAS detector is presented for the Standard Model Higgs boson produced by vector-boson fusion and decaying to a pair of bottom quarks, using 20.2 fb−1 of LHC proton-proton collision data at s√=8 TeV. The signal is searched for as a resonance in the invariant mass distribution of a pair of jets containing b-hadrons in vector-boson-fusion candidate events. The yield is measured to be −0.8 ± 2.3...
Measurements of Zγ and Zγγ production in pp collisions at s =8 TeV with the ATL...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThe production of Z bosons with one or two isolated high-energy photons is studied using pp collisions at s√=8 TeV. The analyses use a data sample with an integrated luminosity of 20.3 fb−1 collected by the ATLAS detector during the 2012 LHC data taking. The Zγ and Zγγ production cross sections are measured with leptonic (e+e−, μ+μ−, νν¯) decays of the Z boson, in extended fiducial regions defined in terms of...
Measurement of top quark pair differential cross sections in the dilepton chann...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationMeasurements of normalized differential cross sections of top quark pair (t¯t) production are presented as a function of the mass, the transverse momentum and the rapidity of the t¯t system in proton-proton collisions at center-of-mass energies of √s=7 and 8 TeV. The data set corresponds to an integrated luminosity of 4.6 fb−1 at 7 TeV and 20.2 fb−1 at 8 TeV, recorded with the ATLAS detector at the Large Hadr...
Identification of high transverse momentum top quarks in pp collisions at root ...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThis paper presents studies of the performance of several jet-substructure techniques, which are used to identify hadronically decaying top quarks with high transverse momentum contained in large-radius jets. The efficiency of identifying top quarks is measured using a sample of top-quark pairs and the rate of wrongly identifying jets from other quarks or gluons as top quarks is measured using multijet events c...
The performance of the jet trigger for the ATLAS detector during 2011 data taking
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationThe performance of the jet trigger for the ATLAS detector at the LHC during the 2011 data taking period is described. During 2011 the LHC provided proton–proton collisions with a centre-of-mass energy of 7 TeV and heavy ion collisions with a 2.76 TeV per nucleon–nucleon collision energy. The ATLAS trigger is a three level system designed to reduce the rate of events from the 40 MHz nominal maximum bunch crossin...
Dijet production in √s=7 TeV pp collisions with large rapidity gaps at the ATLA...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationA 6.8 nb−1 sample of pp collision data collected under low-luminosity conditions at View the MathML sources=7TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two jets with View the MathML sourcepT>20GeV are selected and analysed in terms of variables which discriminate between diffractive and non-diffractive processes. Cross section...
Measurements of the Higgs boson production and decay rates and constraints on i...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationCombined ATLAS and CMS measurements of the Higgs boson production and decay rates, as well as constraints on its couplings to vector bosons and fermions, are presented. The combination is based on the analysis of five production processes, namely gluon fusion, vector boson fusion, and associated production with a W or a Z boson or a pair of top quarks, and of the six decay modes H → ZZ, W W , γγ, ττ, bb, and μμ...
Measurement of exclusive γγ →w+W- production and search for exclusive Higgs bos...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationSearches for exclusively produced W boson pairs in the process pp(γγ)→pW+W−p and an exclusively produced Higgs boson in the process pp(gg)→pHp have been performed using e±μ∓ final states. These measurements use 20.2 fb−1 of pp collisions collected by the ATLAS experiment at a center-of-mass energy s√=8 TeV at the LHC. Exclusive production of W+W− consistent with the Standard Model prediction is found with 3.0...
Search for resonances in diphoton events at root s=13TeV with the ATLAS detector
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationSearches for new resonances decaying into two photons in the ATLAS experiment at the CERN Large Hadron Collider are described. The analysis is based on proton-proton collision data corresponding to an integrated luminosity of 3.2 fb−1 at √s=13 TeV recorded in 2015. Two searches are performed, one targeted at a spin-2 particle of mass larger than 500 GeV, using Randall-Sundrum graviton states as a benchmark mode...
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