Semi-visible emerging jets

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Publication Details

Journal
Journal of High Energy Physics
Published
2026-07-23
DOI
https://doi.org/10.1007/jhep07(2026)219
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
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article

Semi-visible emerging jets

José Zurita, Suchita Kulkarni, Juliana Carrasco, Wei Liu et al.
Journal of High Energy Physics
Particle physics theoretical and experimental studies
article

Semi-visible emerging jets

José Zurita, Suchita Kulkarni, Juliana Carrasco, Wei Liu, Joshua Lockyer
article en

Abstract

A bstract We propose a new class of dark-shower signatures in Standard Model extensions featuring Hidden Valleys or dark sectors coupled through an s-channel mediator. In this framework, unstable dark pions appear as long-lived particles (LLPs), with their lifetimes treated as free parameters. The resulting signatures, which we term semi-visible emerging jets (SVEJ), continuously interpolate between the established semi-visible and emerging jet regimes. We outline an analysis strategy optimized for dark pion lifetimes of order $$ \mathcal{O}(10) $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> <mml:mfenced> <mml:mn>10</mml:mn> </mml:mfenced> </mml:math> mm, and reinterpret existing LLP searches targeting lifetimes of $$ \mathcal{O}(100) $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> <mml:mfenced> <mml:mn>100</mml:mn> </mml:mfenced> </mml:math> – $$ \mathcal{O}(1000) $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> <mml:mfenced> <mml:mn>1000</mml:mn> </mml:mfenced> </mml:math> mm. Our proposed SVEJ search, exploiting the current ATLAS emerging-jet trigger, achieves sensitivity to cross sections of $$ \mathcal{O}(0.1) $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> <mml:mfenced> <mml:mn>0.1</mml:mn> </mml:mfenced> </mml:math> fb for lifetimes around $$ \mathcal{O}(10) $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> <mml:mfenced> <mml:mn>10</mml:mn> </mml:mfenced> </mml:math> mm. Finally, we advocate a more detailed study, including hadronisation uncertainties and detector-level effects.

Journal of High Energy PhysicsVol. 2026(7)
University of Graz (AT), Universitat de València (ES), Nanjing University of Science and Technology (CN)
Sustainable cities and communities
Openalex Percentile: Top 10%
Particle physics theoretical and experimental studies
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