Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Expanding the Reach of Heavy Neutrino Searches at the LHC   The observation of neutrino oscillations establishes that neutrinos
($\nu_{\ell}$) have non-zero mass and provides one of the more compelling
arguments for physics beyond the standard model (SM) of particle physics. We
present a feasibility study to search for hypothetical Majorana neutrinos
($N_{\ell}$) with TeV scale masses, predicted by extensions of the SM to
explain the small but non-zero $\nu_{\ell}$ mass, using vector boson fusion
(VBF) processes at the 13 TeV LHC. In the context of the minimal Type-I seesaw
mechanism (mTISM), the VBF $\ell N_{\ell}$ production cross-section surpasses
that of the Drell-Yan process at approximately $m_{N_{\ell}} = 1.4$ TeV. We
consider $\mu N_{\mu}$ and $\tau N_{\tau}$ production through VBF processes
(e.g. $qq'\to \tau N_{\tau}qq'$), with subsequent $N_{\mu}$ and $N_{\tau}$
decays to $\mu jj$ and $\tau jj$, as benchmark cases to show the effectiveness
of the VBF topology for $N_{\ell}$ seaches at the 13 TeV LHC. The requirement
of a dilepton pair combined with four jets, two of which are identified as VBF
jets with large separation in pseudorapidity and a TeV scale dijet mass, is
effective at reducing the SM background. This criteria may provide expected
exclusion bounds, at 95\% confidence level, of $m_{N_{\ell}} < 1.7$ ($2.4$)
TeV, assuming $100$ (1000) fb$^{-1}$ of 13 TeV data from the LHC and mixing
$|V_{\ell N_{\ell}}|^{2} = 1$. The use of the VBF topology to search for
$m_{N_{\ell}}$ increases the discovery reach at the LHC, with expected
significances greater than 5$\sigma$ (3$\sigma$) for $N_{\ell}$ masses up to
1.7 (2.05) TeV using 1000 fb$^{-1}$ of 13 TeV data from the LHC.

31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin