32,366 research outputs found
Jet quenching measurements with ATLAS at LHC
A broad program of measurements is planned for heavy ion collisions in ATLAS.
With up to a factor of 30 increase in collision energy compared to existing
data, significant new insights are anticipated to be obtained with the first
data measured. Global features of the LHC collisions will be accessible with
the early data and will set the stage for the precision measurements to follow.
ATLAS is particularly well suited for exploration of "jet quenching," the
extinction of energetic jets in the hot dense medium. Observations of heavy
quark jet suppression will be possible with unprecedented energy reach and
statistical precision, potentially yielding new insights into the basic
mechanisms involved.Comment: 5 pages, 3 figure
Impact simulator Patent
Lunar and planetary gravity simulator to test vehicular response to landin
J/{\Psi} and {\Psi}(2S) Production in p-Pb Collisions at 5.02 TeV with ATLAS
The production rates of heavy quarkonia in ion-ion collisions provide
sensitive probes in the studies of the hot and dense matter formed in these
collisions at high energies. However, a reference for understanding the
behavior in the hot medium is necessary; p-A collisions open the possibility to
study heavy quarkonia states in a smaller system of much lower average
temperature. This is an important step in forming a baseline for understanding
A-A collisions, as well as an investigation into the nature of modifications of
the parton distributions in the nucleus. Using data collected at the LHC in
2013, we show results on the prompt J/{\Psi} and {\Psi}(2S) nuclear
modification factors and the double ratio, {\Psi}(2S) divided by J/{\Psi} in
p-Pb divided by the same in p-p, in p-Pb collisions at 5.02 TeV. The charmonia
states were reconstructed via the dimuon decay channel and the yield is
analyzed differentially in bins of transverse momentum, rapidity, and event
activity.Comment: Proceedings contribution for the HARD PROBES 2015 Conference at
McGill University in Montreal, June 29 - July 3, 2015. Four pages. To be
published in Nuclear Physics B Proceedings Supplemen
Comment on What Collective Bargaining Promises and What it Does
[Excerpt] There can be no disagreement with Professor Jensen\u27s position that a belief in freedom is at the heart of our commitment to collective bargaining. These comments are a footnote to what he says about institutional accommodation and freedom in associations. My point is that acceptable institutional accommodation is achieved only when the institutions themselves do, in fact, offer choices to individuals and thus give freedom its essential meaning
Standard arc welders provide high amperage direct current source
Standard arc welders or power supplies are hooked up in parallel or series connections to obtain an adequate supply of current or voltage for various purposes. This method provides maximum flexibility in a wide range of voltages and currents
A universal formulation for conic trajectories. Basic variables and relationships
Truncated trigonometric functions for conic trajectory formulation in space flight application
Tungsten-rhenium alloy thermocouples effective for high-temperature measurement
Tungsten-rhenium alloy thermocouples, specifically, insulated, sheathed W/W plus 26Re and W plus 5 Re/W plus 26 Re thermocouples, are effective for temperature measurement in excess of 2920 degrees C. These thermocouples have a high thermoelectric output and excellent relationship to temperatures up to 2760 degrees C
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