Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stochastic mass-reconstruction: a new technique to reconstruct resonance
  masses of heavy particles decaying into tau lepton pairs   The invariant mass of tau lepton pairs turns out to be smaller than the
resonant mass of their mother particle and the invariant mass distribution is
stretched wider than the width of the resonant mass as significant fraction of
tau lepton momenta are carried away by neutrinos escaping undetected at
collider experiments. This paper describes a new approach to reconstruct
resonant masses of heavy particles decaying to tau leptons at such experiments.
A typical example is a Z or Higgs boson decaying to a tau pair. Although the
new technique can be used for each tau lepton separately, I combine two tau
leptons to improve mass resolution by requiring the two tau leptons are lined
up in a transverse plane. The method is simple to implement and complementary
to the collinear approximation technique that works well when tau leptons are
not lined up in a transverse plane. The reconstructed mass can be used as
another variable in analyses that already use a visible tau pair mass and
missing transverse momentum as these variables are not explicitly used in the
stochastic mass-reconstruction to select signal-like events.

11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin