Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Longitudinal double spin asymmetry in jet production at STAR   We present recent measurements of the longitudinal double-spin asymmetry A_LL
for the inclusive production of jets at midrapidity in polarized proton-proton
collisions at sqrt(s)=200GeV. The data amount to an integrated luminosity of
3pb-1 and were collected with the STAR detector at the Relativistic Heavy Ion
Collider during the year 2005 with average beam polarizations of about 50%. The
ALL measurements cover jet transverse momenta 5 < pT < 30 GeV/c expanding the
pT coverage over previously published data. The results will be compared with
perturbative QCD evaluations and shown to provide sensitive constraints on the
gluon spin contribution to the nucleon spin.

9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org