Now showing items 182-201 of 1359

• #### Detecting π-phase superfluids with p-wave symmetry in a quasi-one-dimensional optical lattice ﻿

(2016)
We propose an experimental protocol to study p-wave superfluidity in a spin-polarized cold Fermi gas tuned by an s-wave Feshbach resonance. A crucial ingredient is to add a quasi-one-dimensional optical lattice and tune ...
• #### DETECTION OF SPECTRAL EVOLUTION IN THE BURSTS EMITTED DURING THE 2008–2009 ACTIVE EPISODE OF SGR J1550−5418 ﻿

(2012)
In early 2008 October, the soft gamma repeater SGR J1550−5418 (1E 1547.0−5408, AX J155052−5418, PSR J1550−5418) became active, emitting a series of bursts which triggered the Fermi Gamma-ray Burst Monitor (GBM) after ...
• #### Determination of the top-quark pole mass and strong coupling constant from the tt production cross section in pp collisions at √s = 7 TeV ﻿

(2014)
The inclusive cross section for top-quark pair production measured by the CMS experiment in proton–proton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order ...
• #### Development of an interpretive simulation tool for the proton radiography technique ﻿

(2015)
Proton radiography is a useful diagnostic of high energy density (HED) plasmas under active theoretical and experimental development. In this paper, we describe a new simulation tool that interacts realistic laser-driven ...
• #### Development of modularity in the neural activity of childrenʼs brains ﻿

(2015)
We study how modularity of the human brain changes as children develop into adults. Theory suggests that modularity can enhance the response function of a networked system subject to changing external stimuli. Thus, greater ...
• #### Di-electron spectrum at mid-rapidity in p + p collisions at √ s = 200 GeV ﻿

(2012)
We report on the mid-rapidity mass spectrum of di-electrons and cross sections of pseudoscalar and vector mesons via e + e − decays, from √ s = 200 GeV p + p collisions, measured by the large-acceptance experiment STAR at ...
• #### Diagnosing the Time Dependence of Active Region Core Heating from the Emission Measure. II. Nanoflare Trains ﻿

(2013)
The time dependence of heating in solar active regions can be studied by analyzing the slope of the emission measure distribution coolward of the peak. In a previous study we showed that low-frequency heating can account for ...
• #### DIAGNOSING THE TIME-DEPENDENCE OF ACTIVE REGION CORE HEATING FROM THE EMISSION MEASURE. I. LOW-FREQUENCY NANOFLARES ﻿

(2012)
Observational measurements of active region emission measures contain clues to the time dependence of the underlying heating mechanism. A strongly nonlinear scaling of the emission measure with temperature indicates a large ...
• #### Dicke superradiance in solids [Invited] ﻿

(2016)
Recent advances in optical studies of condensed matter systems have led to the emergence of a variety of phenomena that have conventionally been studied in the realm of quantum optics. These studies have not only deepened ...
• #### Dielectron azimuthal anisotropy at mid-rapidity in Au + Au collisions at √sNN=200 GeV ﻿

(2014)
We report on the first measurement of the azimuthal anisotropy (v2) of dielectrons (e+e− pairs) at mid-rapidity from √sNN=200 GeV Au + Au collisions with the STAR detector at the Relativistic Heavy Ion Collider (RHIC), ...
• #### Dielectron Mass Spectra from Au+Au Collisions at √sNN=200  GeV ﻿

(2014)
We report the STAR measurements of dielectron (e+e−) production at midrapidity (|yee|<1) in Au+Au collisions at √sNN=200  GeV. The measurements are evaluated in different invariant mass regions with a focus on 0.30–0.76 ...
• #### Differential cross section measurements for the production of a W boson in association with jets in proton–proton collisions at √s=7 eV ﻿

(2015)
Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse ...
• #### Dijet imbalance measurements in $\mathrm{Au}+\mathrm{Au}$ and $pp$ collisions at $\sqrt{{s}_{NN}}=200\text{ }\text{ }\mathrm{GeV}$ at STAR ﻿

(2017)
We report the first dijet transverse momentum asymmetry measurements from Au+Au and pp collisions at RHIC. The two highest-energy back-to-back jets reconstructed from fragments with transverse momenta above 2 GeV/c display ...
• #### Dilepton Production in p+p, Au+Au collisions at sNN=200GeV and U+U collisions at sNN=193GeV ﻿

(2017)
In this contribution we report e+e1 spectra with various invariant mass and pT differentials in Au+Au collisions at sNN=200GeV and U+U collisions at sNN=193GeV. The structure of the t (−t≈pT2) distributions of these mass ...
• #### Dipolar relaxation collisions in magnetically trapped 7Li ﻿

(1999)
We report the measurement of the rate constant for dipolar relaxation from the (F=2, mF=2) hyperfine state of 7Li. The atoms are confined in a permanent magnet trap at a field of 103 G. The measured value of (1.05±0.10)× ...
• #### Direct observation of growth and collapse of a Bose-Einstein condensate with attractive interactions ﻿

(2000)
Quantum theory predicts that Bose-Einstein condensation of a spatially homogeneous gas with attractive interactions is precluded by a conventional phase transition into either a liquid or solid [1]. When confined to a trap, ...
• #### Direct observation of magnon-phonon coupling in yttrium iron garnet ﻿

(2017)
The magnetic insulator yttrium iron garnet (YIG) with a ferrimagnetic transition temperature of ∼ 560 K has been widely used in microwave and spintronic devices. Anomalous features in spin Seeback effect (SSE) voltages ...
• #### Direct observation of spin excitation anisotropy in the paramagnetic orthorhombic state of BaFe2−xNixAs2 ﻿

(2018)
We use transport and inelastic neutron-scattering measurements to investigate single crystals of iron pnictide BaFe2−xNixAs2(x=0,0.03), which exhibit a tetragonal-to-orthorhombic structural transition at Ts and stripe ...
• #### Directed and elliptic flow of charged particles in Cu + Cu collisions at √sNN=22.4 GeV ﻿

(2012)
This paper reports results for directed flow v1 and elliptic flow v2 of charged particles in Cu + Cu collisions at √sNN=22.4 GeV at the Relativistic Heavy Ion Collider. The measurements are for the 0–60% most central ...
• #### Directed Flow of Identified Particles in Au+Au Collisions at √SNN=200  GeV at RHIC ﻿

(2012)
STAR’s measurements of directed flow (v1) around midrapidity for π±, K±, K0S, p, and p¯ in Au+Au collisions at √sNN=200  GeV are presented. A negative v1(y) slope is observed for most of produced particles (π±, K±, K0S, ...