Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lepton Flavor Violation Induced by a Neutral Scalar at Future Lepton
  Colliders   Many new physics scenarios beyond the Standard Model often necessitate the
existence of a (light) neutral scalar $H$, which might couple to the charged
leptons in a flavor violating way, while evading all existing constraints. We
show that such scalars could be effectively produced at future lepton
colliders, either on-shell or off-shell depending on their mass, and induce
lepton flavor violating (LFV) signals, i.e. $e^+ e^- \to \ell_\alpha^\pm
\ell_\beta^\mp (+H)$ with $\alpha\neq \beta$. We find that a large parameter
space of the scalar mass and the LFV couplings can be probed, well beyond the
current low-energy constraints in the lepton sector. In particular, a
scalar-loop induced explanation of the longstanding muon $g-2$ anomaly can be
directly tested in the on-shell mode.

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The categories of this paper are: math
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
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The categories of this paper are: stat
31
The categories of this paper are: ao-sci
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: cs
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The categories of this paper are: q-bio
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The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga