O impacto da nova lei de falências no mercado de crédito brasileiro

Este artigo avalia as mudanças no mercado de créditobrasileiro em decorrência da Nova Lei de Falências, identificando seus impactos sobre inadimplência, spread bancário, volume de crédito e número de falências. Para isso, utilizaram-se séries disponíveis pelo Banco Central durante o período de 2000 a 2012, avaliando o impacto da lei por meio de regressões lineares e de um método de quebras endógenas. Além de uma diminuição significativa do número de falências, identificou-se um aumento nas concessões de crédito para pessoa jurídica, embora o volume total não tenha sido afetado. Os resultados também indicam que a Nova Lei de Falências não foi eficaz no sentido de diminuir as taxas de inadimplência das pessoas jurídicas e o spread bancário.Este artigo avalia as mudanças no mercado de crédito brasileiro em decorrência da Nova Lei de Falências, identificando seus impactos sobre inadimplência, spread bancário, volume de crédito e número de falências. Para isso, utilizaram-se séries disponíveis pelo Banco Central durante o período de 2000 a 2012, avaliando o impacto da lei por meio de regressões lineares e de um método de quebras endógenas. Além de uma diminuição significativa do número de falências, identificou-se um aumento nas concessões de crédito para pessoa jurídica, embora o volume total não tenha sido afetado. Os resultados também indicam que a Nova Lei de Falências não foi eficaz no sentido de diminuir as taxas de inadimplência das pessoas jurídicas e o spread bancário

Measurement of the W+W- Production Cross Section in ppbar Collisions at sqrt(s)=1.96 TeV using Dilepton Events

We present a measurement of the W+W- production cross section using 184/pb of ppbar collisions at a center-of-mass energy of 1.96 TeV collected with the Collider Detector at Fermilab. Using the dilepton decay channel W+W- -> l+l-vvbar, where the charged leptons can be either electrons or muons, we find 17 candidate events compared to an expected background of 5.0+2.2-0.8 events. The resulting W+W- production cross section measurement of sigma(ppbar -> W+W-) = 14.6 +5.8 -5.1 (stat) +1.8 -3.0 (syst) +-0.9 (lum) pb agrees well with the Standard Model expectation.Comment: 8 pages, 2 figures, 2 tables. To be submitted to Physical Review Letter

Measurement of the W+W- production cross section in p(p)over-bar collisions at root s=1.96 TeV using dilepton events

We present a measurement of the W+W- production cross section using 184 pb(-1) of p (p) over bar collisions at a center-of-mass energy of 1.96 TeV collected with the Collider Detector at Fermilab. Using the dilepton decay channel W+W-→ l(+)ν l(-)(ν) over bar, where the charged leptons can be either electrons or muons, we find 17 candidate events compared to an expected background of 5.0(-0.8)(+2.2) events. The resulting W+W- production cross-section measurement of σ(p (p) over bar → W+W-)=14.6(-5.1)(+5.8)(stat)(-3.0)(+1.8)(syst)± 0.9(lum) pb agrees well with the standard model expectation

Search for anomalous kinematics in tt dilepton events at CDF II

We report on a search for anomalous kinematics of tt¯ dilepton events in pp¯ collisions at √s=1.96  TeV using 193  pb−1 of data collected with the CDF II detector. We developed a new a priori technique designed to isolate the subset in a data sample revealing the largest deviation from standard model (SM) expectations and to quantify the significance of this departure. In the four-variable space considered, no particular subset shows a significant discrepancy, and we find that the probability of obtaining a data sample less consistent with the SM than what is observed is 1.0%-4.5%

Search for anomalous kinematics in t(t)over-bar Dilepton events at CDF II

We report on a search for anomalous kinematics of ttbar dilepton events in ppbar collisions at sqrt{s}=1.96 TeV using 193 {pb}^{-1} of data collected with the CDF II detector. We developed a new a priori technique designed to isolate the subset in a data sample revealing the largest deviation from standard model (SM) expectations and to quantify the significance of this departure. In the four-variable space considered, no particular subset shows a significant discrepancy and we find that the probability of obtaining a data sample less consistent with the SM than what is observed is 1.0-4.5%.Comment: 14 pages, 2 figure

Measurement of the W+W− production cross section in pp¯ collisions at √s=1.96 TeV using dilepton events

We present a measurement of the W+W- production cross section using 184/pb of ppbar collisions at a center-of-mass energy of 1.96 TeV collected with the Collider Detector at Fermilab. Using the dilepton decay channel W+W- -> l+l-vvbar, where the charged leptons can be either electrons or muons, we find 17 candidate events compared to an expected background of 5.0+2.2-0.8 events. The resulting W+W- production cross section measurement of sigma(ppbar -> W+W-) = 14.6 +5.8 -5.1 (stat) +1.8 -3.0 (syst) +-0.9 (lum) pb agrees well with the Standard Model expectation

Measurement of the cross section for prompt diphoton production in pp¯ collisions at √s=1.96 TeV

We report a measurement of the rate of prompt diphoton production in pp¯ collisions at √s=1.96  TeV using a data sample of 207  pb−1 collected with the upgraded Collider Detector at Fermilab. The background from nonprompt sources is determined using a statistical method based on differences in the electromagnetic showers. The cross section is measured as a function of the diphoton mass, the transverse momentum of the diphoton system, and the azimuthal angle between the two photons and is found to be consistent with perturbative QCD predictions

Expression of Interest for a Phase-II LHCb Upgrade: Opportunities in flavour physics, and beyond, in the HL-LHC era

https://cds.cern.ch/record/224431