Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mono-b events from single stop production at the HL-LHC and HE-LHC   Top-squarks (stop) play an important role in SUSY naturalness. The stop pair
production is considered as the most effective way to search for stop at the
LHC. However, the collider signature of stop pair production is usually
characterized by $t\bar{t}$ plus missing transverse energy, which is also
predicted in many other non-supersymmetric models. On the other hand, the
single stop production via the electroweak interaction can provide some
distinctive signatures, and thus will help to confirm the existence of the
stop. In this paper, we investigate the observability of the mono-$b$ events
from the single stop production process $pp \to \tilde t_1 \tilde{\chi}^-_1 \to
b+ E\!\!\!\!/_T$ in a simplified MSSM framework where the higgsinos and stops
are the only sparticles at the HL-LHC and HE-LHC. We find that the stop mass
and the higgsino mass may be probed up to about 1.6 TeV and 550 GeV at
$5\sigma$ level at the HE-LHC with the integrated luminosity ${\cal L} =
15~\text{ab}^{-1}$. We also present the $2\sigma$ exclusion limits of the stop
mass at the HL-LHC and HE-LHC.

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The categories of this paper are: q-alg
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The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: math
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The categories of this paper are: funct-an
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga