Now showing items 250-269 of 757

• #### J/ψ and ψ (2S) production in pp collisions at √s=7Tev ﻿

(2012)
A measurement of the J/ψ and ψ(2S) production cross sections in pp collisions at √s=7TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb−1. Using a fit to ...
• #### J/ψ polarization in p+p collisions at √s=200 GeV in STAR ﻿

(2014)
We report on a polarization measurement of inclusive J/ψ mesons in the di-electron decay channel at mid-rapidity at 2<pT<6 GeV/c in p+p collisions at √s=200 GeV. Data were taken with the STAR detector at RHIC. The J/ψ ...
• #### J/ψ production at low pT in Au + Au and Cu + Cu collisions at √sNN =200 GeV with the STAR detector ﻿

(2014)
The J/ψ pT spectrum and nuclear modification factor (RAA) are reported for pT<5GeV/c and |y|<1 from 0% to 60% central Au+Au and Cu+Cu collisions at √ sNN =200GeV at STAR. A significant suppression of pT-integrated J/ψ ...
• #### Jet and underlying event properties as a function of charged-particle multiplicity in proton–proton collisions at √s=7 TeV ﻿

(2013)
Characteristics of multi-particle production in proton-proton collisions at √s=7 TeV are studied as a function of the charged-particle multiplicity, N ch. The produced particles are separated into two classes: those belonging ...
• #### Jet momentum dependence of jet quenching in PbPb collisions at √SNN=2.76 TeV ﻿

(2012)
Dijet production in PbPb collisions at a nucleon–nucleon center-of-mass energy of 2.76 TeV is studied with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 150 μb−1 is analyzed. Jets ...
• #### Jet production rates in association with W and Z bosons in pp collisions at √s=7TeV ﻿

(2012)
Measurements of jet production rates in association with W and Z bosons for jet transverse momenta above 30 GeV are reported, using a sample of proton-proton collision events recorded by CMS at s√=7TeV, corresponding to ...
• #### Jet-Hadron Correlations in √sNN=200  GeV p+p and Central Au+Au Collisions ﻿

(2014)
Azimuthal angular correlations of charged hadrons with respect to the axis of a reconstructed (trigger) jet in Au+Au and p+p collisions at √sNN=200  GeV in STAR are presented. The trigger jet population in Au+Au collisions ...

(2006)
• #### Kondo Destruction and Valence Fluctuations in an Anderson Model ﻿

(2012)
Unconventional quantum criticality in heavy-fermion systems has been extensively analyzed in terms of a critical destruction of the Kondo effect. Motivated by a recent demonstration of quantum criticality in a mixed-valent ...
• #### Large-scale current systems and ground magnetic disturbance during deep substorm injections ﻿

(2012)
We present a detailed analysis of the large-scale current systems and their effects on the ground magnetic field disturbance for an idealized substorm event simulated with the equilibrium version of the Rice Convection ...
• #### Laser Pulse Duration Is Critical For the Generation of Plasmonic Nanobubbles ﻿

(2014)
Plasmonic nanobubbles (PNBs) are transient vapor nanobubbles generated in liquid around laser-overheated plasmonic nanoparticles. Unlike plasmonic nanoparticles, PNBs’ properties are still largely unknown due to their ...
• #### Laser-cooling limits and single-ion spectroscopy ﻿

(1987)
The limitations to the achievement of low kinetic energies for laser cooling of single ions confined in electromagnetic traps are discussed. Sideband cooling of an ion in an rf (Paul) trap is reexamined including the effects ...
• #### Laser-free slow atom source ﻿

(1999)
A slow atom source, which does not rely on lasers, has been developed and characterized. The device, acting as an atomic low-pass velocity filter, utilizes permanent magnets to passively select the slow atoms present in a ...
• #### Learning physics of living systems from Dictyostelium ﻿

(2014)
Unlike a new generation of scientists that are being trained directly to work on the physics of living systems, most of us more senior members of the community had to find our way from other research areas. We all have our ...
• #### Lie algebraic similarity transformed Hamiltonians for lattice model systems ﻿

(2015)
We present a class of Lie algebraic similarity transformations generated by exponentials of two-body on-site Hermitian operators whose Hausdorff series can be summed exactly without truncation. The correlators are defined ...
• #### 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 ...
• #### Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies ﻿

(2015)
Measurements of two-particle angular correlations between an identified strange hadron (KS0 or Λ/Λ¯) and a charged particle, emitted in pPb collisions, are presented over a wide range in pseudorapidity and full azimuth. ...
• #### Longitudinal and transverse spin asymmetries for inclusive jet production at mid-rapidity in polarized p+p collisions at √s=200  GeV ﻿

(2012)
We report STAR measurements of the longitudinal double-spin asymmetry ALL, the transverse single-spin asymmetry AN, and the transverse double-spin asymmetries AΣ and ATT for inclusive jet production at mid-rapidity in ...
• #### Longitudinal Spin Excitations and Magnetic Anisotropy in Antiferromagnetically Ordered BaFe2As2 ﻿

(2013)
We report on a spin-polarized inelastic neutron-scattering study of spin waves in the antiferromagnetically ordered state of BaFe2As2. Three distinct excitation components are identified, with spins fluctuating along the ...
• #### Macroscopic Ensembles of Aligned Carbon Nanotubes in Bubble Imprints Studied by Polarized Raman Microscopy ﻿

(2014)
We study the alignment of single-wall carbon nanotubes (SWCNTs) in bubble imprints through polarized Raman microscopy. A hemispherical bubble containing SWCNTs is pressed against a glass substrate, resulting in an imprint ...