Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cracking Down on Fake Photons - A Case of 750 GeV Diphoton Resonance -   Among various models to explain the $750$ GeV diphoton resonance hinted at
the LHC Run 2, a class of models where the resonance decays not into a pair of
photons but into a pair of photon-jets is gathering definite attention. In this
paper, we study how well we can distinguish the di-photon-jet resonance from
the diphoton resonance by examining detector responses to the photon-jets. We
find that the sum of $p_T$ of the first $e^+e^-$ pair from the photon
conversion provides strong discrimination power. We also discuss determination
of the lifetime of the light intermediate particle by measuring the photon
conversion points.

9
The categories of this paper are: nlin
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th