62,979 research outputs found
Recent results from the cosmic ray program of the NA61/SHINE experiment
NA61/SHINE is a fixed target experiment designed to study hadron-proton,
hadron-nucleus and nucleus-nucleus interactions at the CERN
Super-Proton-Synchrotron. In this paper we summarize the results from
pion-carbon collisions recorded at beam momenta of 158 and 350 GeV/c. Hadron
production measurements in this type of interactions is of fundamental
importance for the understanding of the muon production in extensive air
showers. In particular, production of (anti)baryons and are mechanisms
responsible for increasing the number of muons which reaches the ground. The
underestimation of the (anti)baryons or production rates in current
hadronic interaction models could be one of the sources of the excess of muons
observed by cosmic ray experiments. The results on the production spectra of
, K, p, , , ,
K, , and K are presented, as well as
their comparison to predictions of hadronic interaction models currently used
in air shower simulations.Comment: 8 pages, 9 figures. To appear in the proceedings of the 20th
International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI
2018), Nagoya, Japa
Process and Progress: Reviewing the Criminal Justice Act
Prado describes the results of a comprehensive study of the federal defender program and concludes that as the federal criminal justice system evolves, the Criminal Justice Act program must adapt to ever-changing conditions
The European used-car market at a glance: Hedonic resale price valuation in automotive leasing industry
In the leasing industry, the risk of loss on sales at the end of the contract term, as well as pricing are critically impacted by the forecasted resale price of the asset (residual value). We apply the Hedonic methodology to European auto lease portfolios, in order to estimate the resale price distribution. The Hedonic approach estimates the price of a good through the valuation of its attributes. Following a discussion on Hedonic prices, we propose an operational model for the automobile resale market. The model is applied to four European countries (France, Germany, Spain and Great Britain), and distributions are calculated on two vehicle versions (Audi A4 & Ford Focus) allowing a comparison of market depreciation patterns and residual value risks.Hedonic model, residual value, automotive market
Hedging residual value risk using derivatives
Abstract: In the leasing industry the lessor faces a risk, at the end of the contract, in not recovering sufficient capital value from resale of the asset. We propose a model to hedge residual value risk using the Gaussian copula methodology. After discussing residual value risk and credit risk modelization, a new derivative product is introduced and analyzed; the Collateralized Residual Values (CRV). The model is applied to an European auto lease portfolio of operating lease contracts pertaining to a major company. Our results indicate that the financial product is easy to customize, and to implement through the contract characteristics and the level of correlation.Residual value risk, credit risk, credit derivatives, factor modeling, copula
Tests of hadronic interactions with measurements by Pierre Auger Observatory
The hybrid design of the Pierre Auger Observatory allows for the measurement
of a number of properties of extensive air showers initiated by ultra-high
energy cosmic rays. By comparing these measurements to predictions from air
shower simulations, it is possible to both infer the cosmic ray's mass
composition and test hadronic interactions beyond the energies reached by
accelerators. In this paper, we will present a compilation of results of air
shower measurements by Pierre Auger Observatory which are sensitive to the
properties of hadronic interactions and can be used to constrain the hadronic
interaction models. The inconsistencies found between the interpretation of
different observables with regard to primary composition and between their
measurements and simulations show that none of the currently used hadronic
interaction models can provide a proper description of air showers and, in
particular, of the muon production.Comment: 6 pages, 5 figures. To appear in the proceedings of the 20th
International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI
2018), Nagoya, Japa
Measurements of Hadron Production in Pion-Carbon Interactions with NA61/SHINE at the CERN SPS
NA61/SHINE is a fixed target experiment designed to study hadron-proton,
hadron-nucleus and nucleus-nucleus interactions at the CERN
Super-Proton-Synchrotron. In this proceeding we present results on spectra of
identified hadrons produced in pion-carbon production interactions, which are
of fundamental importance to improve the extensive air shower modeling, and
hence the interpretation of ultra-high-energy-cosmic-rays measurements. In
particular, our measurements of (anti)baryons and production in
pion-carbon interactions can contribute to improve the predictions of muon
production by air shower simulations using hadronic interaction models. In this
contribution we discuss the data analysis and the results from pion-carbon
collisions recorded at beam momenta of 158 and 350 GeV/c. The preliminary
spectra of and () are shown, as well as a comparison to
predictions of hadronic interaction models used in air shower simulations.
Additionally, we present final results on the production of ,
and resonances.Comment: Proceedings of 35th International Cosmic Rays Conference, Busan,
South Kore
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