Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An improved direct measurement of leptonic coupling asymmetries with
  polarized Z bosons   We present final measurements of the Z boson-lepton coupling asymmetry
parameters Ae, Amu, and Atau with the complete sample of polarized Z bosons
collected by the SLD detector at the SLAC Linear Collider. From the left-right
production and decay polar angle asymmetries in leptonic Z decays we measure Ae
= 0.1544 +- 0.0060, Amu = 0.142 +- 0.015, and Atau = 0.136 +- 0.015. Combined
with our left-right asymmetry measured from hadronic decays, we find Ae =
0.1516 +- 0.0021. Assuming lepton universality, we obtain a combined effective
weak mixing angle of sin**2 theta^{eff}_W = 0.23098 +- 0.00026.

15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess