Now showing items 21-40 of 755

• #### Magnetization Dynamics from Time-Dependent Noncollinear Spin Density Functional Theory Calculations ﻿

(2015)
A computational scheme, based on a time-dependent extension of noncollinear spin density functional theory, for the simultaneous simulation of charge and magnetization dynamics in molecular systems is presented. We employ ...
• #### Defining and resolving current systems in geospace ﻿

(2015)
Electric currents flowing through near-Earth space (R≤12RE) can support a highly distorted magnetic field topology, changing particle drift paths and therefore having a nonlinear feedback on the currents themselves. A ...
• #### Energy dependence of the spin excitation anisotropy in uniaxial-strained BaFe1.9Ni0.1As2 ﻿

(2015)
We use inelastic neutron scattering to study the temperature and energy dependence of the spin excitation anisotropy in uniaxial-strained electron-doped iron pnictide BaFe1.9Ni0.1As2 near optimal superconductivity (Tc=20K). ...
• #### From tunable core-shell nanoparticles to plasmonic drawbridges: Active control of nanoparticle optical properties ﻿

(2015)
The optical properties of metallic nanoparticles are highly sensitive to interparticle distance, giving rise to dramatic but frequently irreversible color changes. By electrochemical modification of individual nanoparticles ...
• #### Three-Dimensional Crystallization of Vortex Strings in Frustrated Quantum Magnets ﻿

(2015)
We demonstrate that frustrated exchange interactions can produce exotic 3D crystals of vortex strings near the saturation field (H=Hsat) of body- and face-centered cubic Mott insulators. The combination of cubic symmetry ...
• #### Cancer-Related NEET Proteins Transfer 2Fe-2S Clusters to Anamorsin, a Protein Required for Cytosolic Iron-Sulfur Cluster Biogenesis ﻿

(2015)
Iron-sulfur cluster biogenesis is executed by distinct protein assembly systems. Mammals have two systems, the mitochondrial Fe-S cluster assembly system (ISC) and the cytosolic assembly system (CIA), that are connected ...
• #### Search for quark compositeness in dijet angular distributions from pp collisions at √s=7 TeV ﻿

(2015)
A search for quark compositeness using dijet angular distributions from pp collisions at √s=7 TeV is presented. The search has been carried out using a data sample corresponding to an integrated luminosity of 2.2 fb−1, ...
• #### Searches for supersymmetry using the M T2 variable in hadronic events produced in pp collisions at 8 TeV ﻿

(2015)
Searches for supersymmetry (SUSY) are performed using a sample of hadronic events produced in 8 TeV pp collisions at the CERN LHC. The searches are based on the M T2 variable, which is a measure of the transverse momentum ...
• #### Solutions of the Two-Dimensional Hubbard Model: Benchmarks and Results from a Wide Range of Numerical Algorithms ﻿

(2015)
Numerical results for ground-state and excited-state properties (energies, double occupancies, and Matsubara-axis self-energies) of the single-orbital Hubbard model on a two-dimensional square lattice are presented, in ...
• #### Long-range two-dimensional superstructure in the superconducting electron-doped cuprate Pr0.88LaCe0.12CuO4 ﻿

(2015)
Utilizing single-crystal synchrotron x-ray scattering, we observe distorted CuO2 planes in the electron-doped superconductor Pr1−xLaCexCuO4+δ, x = 0.12. Resolution-limited rods of scattering are indicative of a long-range ...
• #### Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8TeV ﻿

(2015)
Properties of the Higgs boson with mass near 125GeV are measured in proton-proton collisions with the CMS experiment at the LHC. Comprehensive sets of production and decay measurements are combined. The decay channels ...
• #### Measurements of differential and double-differential Drell–Yan cross sections in proton–proton collisions at √s=8 TeV ﻿

(2015)
Measurements of the differential and double-differential Drell–Yan cross sections in the dielectron and dimuon channels are presented. They are based on proton–proton collision data at √s=8TeV recorded with the CMS detector ...
• #### Measurement of the inclusive 3-jet production differential cross section in proton–proton collisions at 7 TeV and determination of the strong coupling constant in the TeV range ﻿

(2015)
This paper presents a measurement of the inclusive 3-jet production differential cross section at a proton–proton centre-of-mass energy of 7 TeV using data corresponding to an integrated luminosity of 5fb−1collected with ...
• #### Search for decays of stopped long-lived particles produced in proton–proton collisions at √s=8TeV ﻿

(2015)
A search has been performed for long-lived particles that could have come to rest within the CMS detector, using the time intervals between LHC beam crossings. The existence of such particles could be deduced from observation ...
• #### Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings ﻿

(2015)
The cross section for the production of Zγ in proton-proton collisions at 8 TeV is measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 fb−1. Events with an ...
• #### Search for physics beyond the standard model in events with two leptons, jets, and missing transverse momentum in pp collisions at √s = 8 TeV ﻿

(2015)
A search is presented for physics beyond the standard model in final states with two opposite-sign same-flavor leptons, jets, and missing transverse momentum. The data sample corresponds to an integrated luminosity of 19.4 ...
• #### Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data ﻿

(2015)
The standard model of particle physics describes the fundamental particles and their interactions via the strong, electromagnetic and weak forces. It provides precise predictions for measurable quantities that can be tested ...
• #### Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at √s=8 TeV ﻿

(2015)
Dimuon and dielectron mass spectra, obtained from data resulting from proton-proton collisions at 8 TeV and recorded by the CMS experiment, are used to search for both narrow resonances and broad deviations from standard ...
• #### Study of Z production in PbPb and pp collisions at √sNN=2.76 TeV in the dimuon and dielectron decay channels ﻿

(2015)
The production of Z bosons is studied in the dimuon and dielectron decay channels in PbPb and pp collisions at √sNN =2.76 TeV, using data collected by the CMS experiment at the LHC. The PbPb data sample corresponds to an ...
• #### Search for supersymmetry using razor variables in events with b-tagged jets in pp collisions at √s=8  TeV ﻿

(2015)
An inclusive search for supersymmetry in events with at least one b-tagged jet is performed using proton-proton collision data collected by the CMS experiment in 2012 at a center-of-mass energy of 8 TeV. The data set size ...