1,720,984 research outputs found
Cement plant emissions and health effects in the general population: a systematic review
No full textHigher-order QED corrections to W-boson mass determination at hadron colliders
No full textFirst calculation of the shift induced by multiple photon emission on the precision measurement of the W boson mass at hadron colliders
Beyond the Square Root: Evidence for Logarithmic Dependence of Market Impact on Size and Participation Rate
Full text linkWe make an extensive empirical study of the market impact of large orders (metaorders) executed in the US equity market between 2007 and 2009. We show that the square root market impact formula, which is widely used in the industry and supported by previous published research, provides a good fit only across about two orders of magnitude in order size. A logarithmic functional form fits the data better, providing a good fit across almost five orders of magnitude. We introduce the concept of an "impact surface" to model the impact as a function of both the duration and the participation rate of the metaorder, finding again a logarithmic dependence. We show that during the execution the price trajectory deviates from the market impact, a clear indication of non-VWAP executions. Surprisingly, we find that sometimes the price starts reverting well before the end of the execution. Finally we show that, although on average the impact relaxes to approximately 2/3 of the peak impact, the precise asymptotic value of the price depends on the participation rate and on the duration of the metaorder. We present evidence that this might be due to a herding phenomenon among metaorders
Multiple photon corrections to the neutral-current Drell-Yan process
No full textCalculation and simulation of higher-order QED corrections to dilepton production through the Drell-Yan mechanism in hadronic collisions. Application to physics studies at the Tevatron and LHC
Multi-photon corrections to W boson mass determination at hadron colliders
No full textEvaluation of the impact of higher-order final-state photonic corrections on the precise determination of the W-boson mass at the Tevatron and LHC colliders
Matching matrix elements and shower evolution for top-quark production in hadronic collisions
No full textWe study the matching of multijet matrix elements and shower evolution in the case of top production in hadronic collisions at the Tevatron and at the LHC. We present the results of the matching algorithm implemented in the ALPGEN Monte Carlo generator, and compare them with results obtained at the parton level, and with the predictions of the MC@NLO approach. We highlight the consistency of the matching algorithm when applied to these final states, and the excellent agreement obtained with MC@NLO for most inclusive quantities. We nevertheless identify also a remarkable difference in the rapidity spectrum of the leading jet accompanying the top quark pair, and comment on the likely origin of this discrepancy
Pricing financial derivatives with neural networks
No full textApplication of neural network algorithms to the problem of option pricing
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