0000000000709547

AUTHOR

A. Freitas

showing 3 related works from this author

Progression From Paroxysmal to Persistent Atrial Fibrillation. Clinical Correlates and Prognosis

2010

Objectives: We investigated clinical correlates of atrial fibrillation (AF) progression and evaluated the prognosis of patients demonstrating AF progression in a large population. Background: Progression of paroxysmal AF to more sustained forms is frequently seen. However, not all patients will progress to persistent AF. Methods: We included 1,219 patients with paroxysmal AF who participated in the Euro Heart Survey on AF and had a known rhythm status at follow-up. Patients who experienced AF progression after 1 year of follow-up were identified. Results: Progression of AF occurred in 178 (15%) patients. Multivariate analysis showed that heart failure, age, previous transient ischemic attac…

MaleTime FactorPrognosiRisk FactorpredictionMiddle AgedRisk AssessmentSeverity of Illness IndexAtrial FibrillationDisease ProgressionepidemiologyFemaleatrial fibrillation; epidemiology; prediction; prognosis; progression; Aged; Atrial Fibrillation; Female; Humans; Male; Middle Aged; Prognosis; Risk Assessment; Risk Factors; Severity of Illness Index; Time Factors; Disease ProgressionprogressionAgedHuman
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Determining Sneutrino Masses and Physical Implications

2005

In some areas of supersymmetry parameter space, sneutrinos are lighter than the charginos and the next-to-lightest neutralino, and they decay into the invisible neutrino plus lightest-neutralino channel with probability one. In such a scenario they can be searched for in decays of charginos that are pair-produced in e+e- collisions, and in associated sneutrino-chargino production in photon-electron collisions. The sneutrino properties can be determined with high accuracy from the edges of the decay energy spectra in the first case and from threshold scans in the second. In the final part of the report we investigate the mass difference of sneutrinos and charged sleptons between the third an…

Nuclear and High Energy PhysicsParticle physicsFOS: Physical sciencesannihilation [electron positron]decay modes [chargino]SO(10) [grand unified theory]Nuclear physicsParticle decayHigh Energy Physics - Phenomenology (hep-ph)Seesaw molecular geometrypair production [chargino]interaction [photon electron]Invariant massddc:530numerical calculationsPhysicsmass difference [slepton]High Energy Physics::PhenomenologySuperpartnerSupersymmetryboundary conditionseesaw modelHigh Energy Physics - PhenomenologyPair productionNeutralino(4lepton 2sneutrino) [final state]width [chargino]branching ratio [chargino]High Energy Physics::Experimentassociated production [sneutrino]Neutrinomass spectrum [sneutrino]
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Standard Model Theory for the FCC-ee Tera-Z stage

2018

The future 100-km circular collider FCC at CERN is planned to operate in one of its modes as an electron-positron FCC-ee machine. We give an overview comparing the theoretical status to the experimental demands of one of four foreseen FCC-ee operating stages, Z-boson resonance energy physics, called the FCC-ee Tera-Z stage for short. The FCC-ee Tera-Z will deliver the highest integrated luminosities as well as very small systematic errors for a study of the Standard Model (SM) with unprecedented precision. In fact, the FCC-ee Tera-Z will allow the study of at least one more perturbative order in quantum field theory compared to the LEP/SLC precision. The real problem is that the present pre…

High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)FOS: Physical sciences
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