Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for a W' boson decaying to a $\tau$ lepton and a neutrino in
  proton-proton collisions at $\sqrt{s} =$ 13 TeV   A search for a new high-mass resonance decaying to a tau lepton and a
neutrino is reported. The analysis uses proton-proton collision data collected
by the CMS experiment at the LHC at $\sqrt{s} =$ 13 TeV, corresponding to an
integrated luminosity of 35.9 fb$^{-1}$. The search utilizes hadronically
decaying tau leptons. No excess in the event yield is observed at high
transverse masses of the $\tau$ and missing transverse momentum. An
interpretation of results within the sequential standard model excludes W'
boson masses below 4.0 TeV at 95% confidence level. Existing limits are also
improved on models in which the W' boson decays preferentially to fermions of
the third generation. Heavy W' bosons with masses less than 1.7-3.9 TeV,
depending on the coupling in the non-universal G(221) model, are excluded at
95% confidence level. These are the most stringent limits on this model to
date.

15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat