Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single Hadronic-Spin Asymmetries in Weak Interaction Processes   We show that measurements of single-spin asymmetries (SSAs) in charged
current weak interaction processes such as deep inelastic neutrino scattering
on a polarized target and inclusive $W$ production in polarized hadron-hadron
collisions discriminate between the two fundamental QCD mechanisms (the Sivers
and Collins effects) which have been proposed to explain such time-reversal-odd
asymmetries. It has recently been shown that QCD final-state interactions due
to gluon exchange between the struck quark and the proton spectators in
semi-inclusive deep inelastic lepton scattering will produce non-zero
Sivers-type single-spin asymmetries which survive in the Bjorken limit. We show
that this QCD final-state interaction produces identical SSAs in charged and
neutral current reactions. Furthermore, the contribution of each quark to the
SSA from this mechanism is proportional to the contribution of that quark to
the polarized baryon's anomalous magnetic moment. In contrast, the Collins
effect contribution to SSAs depends on the transversity distribution of quarks
in the polarized target. Since the charged current only couples to quarks of
one chirality, it cannot sense the transversity distribution of the target, and
thus it gives no Collins-type contribution to single-spin correlations.

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The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
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The categories of this paper are: math
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The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
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The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
1
The categories of this paper are: cs