Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New Results on the Theoretical Precision of the LEP/SLC Luminosity   We consider the error budget for the calculation of the LEP/SLC luminosity in
the Monte Carlo event generator BHLUMI4.04 from the standpoint of new
calculations of the exact result for the O(alpha) correction to the process e+
e- -> e+ e- + gamma in the low angle luminosity regime at SLC/LEP energies, for
the double bremsstrahlung effect e+ e- -> e+ e- + gamma gamma in this regime,
and for the size of the two-loop virtual correction to e+ e- -> e+ e- in this
regime in context of Yennie-Frautschi-Suura exponentiation. We find that the
error on the O(alpha**2) photonic correction can be reduced from the currently
published value 0.1% to the value 0.027%. This leads to an over-all precision
tag for the currently available program BHLUMI4.04 of 0.061%. This reduction of
the precision of the calculation is important for the final LEP1 EW precision Z
physics tests of the Standard Model.

16
The categories of this paper are: stat
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th