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 direct top squark pair production in events with a Higgs or Z boson,...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationA search for direct top squark pair production resulting in events with either a same-flavour opposite-sign dilepton pair with invariant mass compatible with a Z boson or a pair of jets compatible with a Standard Model (SM) Higgs boson (h) is presented. Requirements on the missing transverse momentum, together with additional selections on leptons, jets, jets identified as originating from b-quarks are imposed ...
Search for heavy resonances decaying to a W or Z boson and a Higgs boson in the...
Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS CollaborationA search for heavy resonances decaying to a W or Z boson and a Higgs boson in the final state is described. The search uses of proton–proton collision data at collected by the ATLAS detector at the CERN Large Hadron Collider in 2015 and 2016. The data are in agreement with the Standard Model expectations, with the largest excess found at a resonance mass of 3.0 TeV with a local (global) significance of 3.3 (2.1...
Probing the CP nature of the Higgs coupling in tt¯h events at the LHC
Amor dos Santos, S.; Fiolhais, Miguel C. N.; Frederix, R.; Gonçalo, R.; Gouveia, E.; Martins, R.; Onofre, A.; Pease, C. M.; Peixoto, H.; Reigoto, A.The determination of the CP nature of the Higgs coupling to top quarks is addressed in this paper, using t¯th events produced in √s=13 TeV proton-proton collisions at the LHC. Dileptonic final states are employed, with two oppositely charged leptons and four jets, corresponding to the decays t→bW+→bℓ+νℓ, ¯t→¯bW−→¯bℓ−¯νℓ, and h→b¯b. Pure scalar (h=H), pure pseudoscalar (h=A), and CP-violating Higgs boson signal...
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 CollaborationA 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 cross section for isolated-photon plus jet production in pp ...
Onofre, A.; Castro, Nuno Filipe; ATLAS CollaborationThe 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...
Search for resonances in the mass distribution of jet pairs with one or two jet...
Onofre, A.; Castro, Nuno Filipe; ATLAS CollaborationA 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 producing a W boson in association with a ...
Onofre, A.; Castro, Nuno Filipe; ATLAS CollaborationThe 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 ...
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