Papers by Diego Giovanny Parra Torres
A search is reported for the pair production of a new quark, b ′ , with at least one b ′ decaying... more A search is reported for the pair production of a new quark, b ′ , with at least one b ′ decaying to a Z boson and a bottom quark. The data, corresponding to 2.0 fb −1 of integrated luminosity, were collected from pp collisions at √ s = 7 TeV with the ATLAS detector at the CERN Large Hadron Collider. Using events with a b-tagged jet and a Z boson reconstructed from opposite-charge electrons, the mass distribution of large transverse momentum b ′ candidates is tested for an enhancement. No evidence for a b ′ signal is detected in the observed mass distribution, resulting in the exclusion at 95% confidence level of b ′ quarks with masses m b ′ < 400 GeV that decay entirely via b ′ → Z + b. In the case of a vector-like singlet b ′ mixing solely with the third Standard Model generation, masses m b ′ < 358 GeV are excluded. (c)
A search for tt resonances in lepton+jets events with highly boosted top quarks collected in pp c... more A search for tt resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √ s = 7 TeV with the ATLAS detector
A pesar por el escaso interés por parte de los psicólogos sociales, por el análisis histórico de ... more A pesar por el escaso interés por parte de los psicólogos sociales, por el análisis histórico de la disciplina, este ha contribuido a mejorar la manera notable nuestra comprensión de cuestiones teórico-metodológicas primordiales y con ellas a su propia fundamentación.
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Papers by Diego Giovanny Parra Torres