7,813 research outputs found
Observation of modified hadronization in relativistic Au+Au collisions: a promising signature for deconfined quark-gluon matter
Measurements of identified particles from Au+Au collisions at
GeV are reviewed. Emphasis is placed on nuclear
modification, baryon-to-meson ratios, and elliptic flow at intermediate
transverse momentum ( GeV/c). Possible connections between (1)
these measurements, (2) the running coupling for static quark anti-quark pairs
at finite temperature, and (3) the creation of a deconfined quark-gluon phase
are presented. Modifications to hadronization in Au+Au collisions are proposed
as a likely signature for the creation of deconfined colored matter.Comment: 8 pages, 5 figures, invited talk at the Strange Quark Matter 2004
conference, Cape Town, South Afric
The negative acute phase response of serum transthyretin following Streptococcus suis infection in the pig
Peer reviewedPublisher PD
Higher Flow Harmonics in Heavy Ion Collisions from STAR
We report STAR measurements relating to higher flow harmonics including the
centrality dependence of two- and four-particle cumulants for harmonics 1 to 6.
Two-particle correlation functions vs. \Delta\eta and \Delta\phi are presented
for pT and number correlations. We find the power spectra (Fourier Transforms
of the correlation functions) for central collisions drop quickly for higher
harmonics. The \Delta\eta dependence of v3{2}2 and the pT and centrality
dependence of v2 and v3 are studied. Trends are conistent with expectations
from models including hot-spots in the initial energy density and an expansion
phase. We also present v3 and v2{2}2 - v2{4}2 vs. \surdsNN .Comment: 8 pages. Conference proceedings for Quark Matter 201
Why would you put a flashlight in a dark matter detector?
Silicon photomultipliers (SiPMs) are solid-state, single-photon sensitive,
pixelated sensors whose usage for scintillation detection has rapidly increased
over the past decade. It is known that the avalanche process within the device,
which renders a single photon detectable, can also generate secondary photons
which may be detected by a separate device. This effect, known as external
crosstalk, could potentially degrade the science goals of future xenon dark
matter experiments. In this article, we measure the effect of external
crosstalk in a dual-phase, liquid xenon time projection chamber fully
instrumented with SiPMs. We then consider the implications for a future xenon
dark matter experiment utilizing SiPMs and discuss possible solutions.Comment: 12 pages, 6 figure
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