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Measurement of J/ψ and ψ(2S) Prompt Double-Differential Cross Sections in pp Collisions at √s=7 TeV
(2015)Physical Review LettersThe double-differential cross sections of promptly produced J/ψ and ψ(2S) mesons are measured in pp collisions at √s=7 TeV, as a function of transverse momentum pT and absolute rapidity |y|. The analysis uses J/ψ and ψ(2S) dimuon samples collected by the CMS experiment, corresponding to integrated luminosities of 4.55 and 4.90 fb−1, respectively. The results are based on a two-dimensional analysis of the dimuon invariant mass and decay ...Journal Article -
Stranded on a low-carbon planet: Implications of climate policy for the phase-out of coal-based power plants
(2015)Technological Forecasting and Social ChangeJournal Article -
Matrix-valued Bessel processes
(2015)Electronic Journal of ProbabilityThis paper introduces a matrix analog of the Bessel processes, taking values in the closed set E of real square matrices with nonnegative determinant. They are related to the well-known Wishart processes in a simple way: the latter are obtained from the former via the map x↦x⊤x. The main focus is on existence and uniqueness via the theory of Dirichlet forms. This leads us to develop new results of potential theoretic nature concerning the ...Journal Article -
Storm type effects on super Clausius-Clapeyron scaling of intense rainstorm properties with air temperature
(2015)Hydrology and Earth System SciencesExtreme precipitation is thought to increase with warming at rates similar to or greater than the water vapour holding capacity of the air at ~ 7% °C−1, the so-called Clausius–Clapeyron (CC) rate. We present an empirical study of the variability in the rates of increase in precipitation intensity with air temperature using 30 years of 10 min and 1 h data from 59 stations in Switzerland. The analysis is conducted on storm events rather ...Journal Article -
High-dimensional asymptotics for percolation of Gaussian free field level sets
(2015)Electronic Journal of ProbabilityWe consider the Gaussian free field on Zd, d≥3, and prove that the critical density for percolation of its level sets behaves like 1/d1+o(1) as d tends to infinity. Our proof gives the principal asymptotic behavior of the corresponding critical level h∗(d). Moreover, it shows that a related parameter h∗∗(d) introduced by Rodriguez and Sznitman in [23] is in fact asymptotically equivalent to h∗(d).Journal Article -
Search for physics beyond the standard model in final states with a lepton and missing transverse energy in proton-proton collisions at √s = 8 TeV
(2015)Physical Review DA search for new physics in proton-proton collisions having final states with an electron or muon and missing transverse energy is presented. The analysis uses data collected in 2012 with the CMS detector, at an LHC center-of-mass energy of 8 TeV, and corresponding to an integrated luminosity of 19.7 fb−1. No significant deviation of the transverse mass distribution of the charged lepton-neutrino system from the standard model prediction ...Journal Article -
Dual color single particle tracking via nanobodies
(2015)Methods and Applications in FluorescenceSingle particle tracking is a powerful tool to investigate the function of biological molecules by following their motion in space. However, the simultaneous tracking of two different species of molecules is still difficult to realize without compromising the length or density of trajectories, the localization accuracy or the simplicity of the assay. Here, we demonstrate a simple dual color single particle tracking assay using small, ...Journal Article -
Bottom-up silicon nanowire-based thermoelectric microgenerators
(2015)Journal of Physics: Conference SeriesIn this work, bottom-up intrinsic crystalline Si nanowire arrays in combination with top-down microfabrication techniques and a vertical device architecture have been proposed to develop an all-silicon nanostructured thermoelectric generator. To fabricate this device, a suitable vertical integration of Si NWs on patterned microstructures, which define the thermoelectric legs of the generator, has been achieved by bonding top and bottom ...Journal Article -
Sources and contributions of wood smoke during winter in London: assessing local and regional influences
(2015)Atmospheric Chemistry and PhysicsDetermining the contribution of wood smoke to air pollution in large cities such as London is becoming increasingly important due to the changing nature of domestic heating in urban areas. During winter, biomass burning emissions have been identified as a major cause of exceedances of European air quality limits. The aim of this work was to quantify the contribution of biomass burning in London to concentrations of PM2.5 and determine ...Journal Article -
Top-down estimates of European CH4 and N2O emissions based on four different inverse models
(2015)Atmospheric Chemistry and PhysicsEuropean CH4 and N2O emissions are estimated for 2006 and 2007 using four inverse modelling systems, based on different global and regional Eulerian and Lagrangian transport models. This ensemble approach is designed to provide more realistic estimates of the overall uncertainties in the derived emissions, which is particularly important for verifying bottom-up emission inventories. We use continuous observations from 10 European ...Journal Article