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ATLAS Papers

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2026-03-13
07:25
Search for displaced decays of long-lived particles in events with missing transverse momentum in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
A search for long-lived particles in events with significant missing transverse momentum and at least one displaced vertex is presented. [...]
arXiv:2603.12051 ; CERN-EP-2026-052. - 2026 - 58 p, 58.
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2026-03-09
16:41
Search for long-lived charginos and $\tau$-sleptons using final states with a disappearing track in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper reports a search for decays of long-lived charginos or $\tau$-sleptons to final states containing a short disappearing track, a single high-energy jet, and missing transverse momentum. [...]
arXiv:2603.08315 ; CERN-EP-2026-044. - 2026 - 54.
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2026-03-09
16:21
Search for decays of the Higgs boson into pair-produced pseudoscalar particles decaying into $\tau^+\tau^-\tau^+\tau^-$ using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for a pair of low-mass pseudoscalars $a$ that promptly decay into $\tau$-leptons is presented using 140 fb$^{-1}$ of proton-proton collision data at $13$ TeV centre-of-mass energy recorded with the ATLAS detector at the Large Hadron Collider. [...]
arXiv:2603.08323 ; CERN-EP-2026-026. - 2026 - 33.
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2026-03-02
17:03
Search for massive, long-lived particles in events with displaced vertices and displaced muons in $pp$ collisions at $\sqrt{s}=13.6$ TeV with the ATLAS experiment / ATLAS Collaboration
A search is presented for massive long-lived particles in events featuring at least one displaced vertex and at least one displaced muon, using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider from 2022 to 2024 at a centre-of-mass energy of 13.6 TeV. [...]
arXiv:2603.01991 ; CERN-EP-2026-031. - 2026 - 43.
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2026-02-27
14:53
Combination of ATLAS and CMS searches for Higgs boson pair production at $\sqrt{s} = 13$ TeV / ATLAS Collaboration
This Letter presents a combination of searches for Higgs boson pair (HH) production performed by the ATLAS and CMS Collaborations using proton-proton collision data sets recorded at $\sqrt{s} = 13$ TeV during the Large Hadron Collider Run 2, corresponding to integrated luminosities ranging between 126 and 140 $\mathrm{fb^{-1}}$. [...]
arXiv:2602.23991 ; CERN-EP-2026-011. - 2026 - 50.
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2026-02-19
08:29
Evidence of $ZZ\gamma$ production with the ATLAS detector / ATLAS Collaboration
This paper presents the first evidence of the simultaneous production of two $Z$ bosons and one photon with the ATLAS detector at the Large Hadron Collider. [...]
arXiv:2602.17165 ; CERN-EP-2026-038. - 2026 - 29.
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2026-02-02
11:17
Breaking barriers: the impact of ATLAS Virtual Visits in science communication / ATLAS Collaboration
The ATLAS Collaboration at CERN’s Large Hadron Collider is at the forefront of particle physics research and is equally committed to bridging the gap between cutting-edge science and the wider public [...]
arXiv:2601.22457 ; CERN-EP-2026-013. - 2026 - 36.
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2026-02-02
08:25
Search for dimuon resonance in the 35 to 75 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions with the ATLAS / ATLAS Collaboration
A model-independent search for low-mass resonances decaying into pairs of oppositely charged muons is presented. [...]
arXiv:2601.21361 ; CERN-EP-2025-285. - 2026 - 44.
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2026-01-19
08:14
Observation of a cross-section enhancement near the $t\bar{t}$ production threshold in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
A measurement of $t\bar{t}$ production is presented in the invariant-mass region near the pair production threshold, $m_{t\bar{t}} \sim 345$ GeV, in final states with two charged leptons and multiple jets. [...]
arXiv:2601.11780 ; CERN-EP-2026-002. - 2026 - 64.
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2026-01-09
10:52
Search for long-lived particles using displaced vertices of oppositely charged leptons in 140 fb$^{-1}$ of pp collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A search is presented for long-lived particles decaying into an oppositely charged lepton pair, $\mu^{+}\mu^{-}$, $e^{+}e^{-}$, or $e^{\pm}\mu^{\mp}$, that form a vertex within the inner tracking system of the ATLAS detector at the Large Hadron Collider, displaced from the primary proton-proton interaction region. [...]
arXiv:2601.05664 ; CERN-EP-2025-293. - 2026 - 40.
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