Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Heavy Majorana Neutrinos from $W\gamma$ Fusion at Hadron Colliders   Vector boson fusion processes become increasingly more important at higher
collider energies and for probing larger mass scales due to collinear
logarithmic enhancements of the cross section. In this context, we revisit the
production of a hypothetic heavy Majorana neutrino $(N)$ at hadron colliders.
Particular attention is paid to the fusion process $W\gamma \rightarrow
N\ell^{\pm}$. We systematically categorize the contributions from an initial
state photon in the elastic, inelastic, and deeply inelastic channels.
Comparing with the leading channel via the Drell-Yan production $q
\bar{q}'\rightarrow W^{*}\rightarrow N\ell^{\pm}$ at NNLO in QCD, we find that
the $W\gamma$ fusion process becomes relatively more important at higher
scales, surpassing the DY mechanism at $m_{N} \sim 1 \text{TeV} \ (770
\text{GeV})$ at the 14 TeV LHC (100 TeV VLHC). We investigate the inclusive
heavy Majorana neutrino signal, including QCD corrections, and quantify the
Standard Model backgrounds at future hadron colliders. We conclude that, with
the currently allowed mixing $| V_{\mu N}| ^2<6\times 10^{-3}$, a $5\sigma$
discovery can be made via the same-sign dimuon channel for $m_N = 530 (1070)$
GeV at the 14 TeV LHC (100 TeV VLHC) after 1 ab$^{-1}$. Reversely, for $m_N =
500$ GeV and the same integrated luminosity, a mixing $| V_{\mu N}|^2$ of the
order $1.1\times10^{-3} (2.5\times10^{-4})$ may be probed.

5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
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The categories of this paper are: q-fin
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys