Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of Lambda polarization in relativistic nuclear collisions at
  sqrt{s}_NN = 7.7-200 GeV   We present a calculation of the global polarization of Lambda hyperons in
relativistic Au-Au collisions at RHIC Beam Energy Scan range sqrt{s}_NN = 7.7 -
200 GeV with a 3+1 dimensional cascade + viscous hydro + cascade model,
UrQMD+vHLLE. Within this model, the mean polarization of Lambda in the
out-of-plane direction is predicted to decrease rapidly with collision energy
from a top value of about 2% at the lowest energy examined. We explore the
connection between the polarization signal and thermal vorticity and estimate
the feed-down contribution to Lambda polarization due to the decay of higher
mass hyperons.

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The categories of this paper are: physics
31
The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
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The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
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The categories of this paper are: nlin