Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Consideration of Photon Radiation in Kinematic Fits for Future e+ e-
  Colliders   Kinematic fitting is an important tool to improve the resolution in
high-energy physics experiments. At future e+e- colliders, photon radiation
parallel to the beam carrying away large amounts of energy and momentum will
become a challenge for kinematic fitting. A photon with longitudinal momentum
pz({\eta}) is introduced, which is parametrized such that {\eta} follows a
normal distribution. In the fit, {\eta} is treated as having a measured value
of zero, which corresponds to pz = 0. As a result, fits with constraints on
energy and momentum conservation converge well even in the presence of a highly
energetic photon, while the resolution of fits without such a photon is
retained. A fully simulated and reconstructed e+e- -> qqqq event sample at
sqrt(s) = 500 GeV is used to investigate the performance of this method under
realistic conditions, as expected at the International Linear Collider.

24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat