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A search for dark matter produced in association with a dark Higgs boson decaying into a Higgs boson pair in 3$b$ or 4$b$ final states using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search is performed for dark matter particles produced in association with a resonant pair of Higgs bosons using 140 fb$^{-1}$ of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the Large Hadron Collider. This signature is expected in some extensions of the Standard Model predicting the production of dark matter particles, and is interpreted in terms of a dark Higgs model containing a $Z'$ mediator in which the dark Higgs boson $s$ decays into a pair of Higgs bosons. [...]
arXiv:2507.02175; CERN-EP-2025-141.- Geneva : CERN, 2025-09-08 - 48 p. - Published in : JHEP 2509 (2025) 067 Fulltext: ANA-HMBS-2024-13-PAPER - PDF; 2507.02175 - PDF; document - PDF; External link: Previous draft version

Detaljerad journal

Observation of VVZ production at s=13 TeV with the ATLAS detector / ATLAS Collaboration
A search for the production of three massive vector bosons, VVZ(V=W,Z), in proton–proton collisions at s=13 TeV is performed using data with an integrated luminosity of 140 fb−1 recorded by the ATLAS detector at the Large Hadron Collider. Events produced in the leptonic final states WWZ→ℓνℓνℓℓ (ℓ=e,μ), WZZ→ℓνℓℓℓℓ, ZZZ→ℓℓℓℓℓℓ, and the semileptonic final states WWZ→qqℓνℓℓ and WZZ→ℓνqqℓℓ, are analysed. [...]
2025 - 27 p. - Published in : Phys. Lett. B 866 (2025) 139527 Fulltext: PDF;

Detaljerad journal

Measurements of $W^+W^-$ production cross-sections in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
Measurements of $W^+W^-\rightarrow e^\pm \nu \mu^\mp \nu$ production cross-sections are presented, providing a test of the predictions of perturbative quantum chromodynamics and the electroweak theory. The measurements are based on data from $pp$ collisions at $\sqrt{s}=13$ TeV recorded by the ATLAS detector at the Large Hadron Collider in 2015-2018, corresponding to an integrated luminosity of 140 fb$^{-1}$. [...]
arXiv:2505.11310; CERN-EP-2025-091.- Geneva : CERN, 2025-08-19 - 62 p. - Published in : JHEP 2508 (2025) 142 Fulltext: ANA-STDM-2020-16-PAPER - PDF; 2505.11310 - PDF; document - PDF; External link: Previous draft version

Detaljerad journal

Measurements of the production cross-sections of a Higgs boson in association with a vector boson and decaying into $WW^\ast$ with the ATLAS detector at $\sqrt{s} = 13$ TeV / ATLAS Collaboration
Measurements of the total and differential Higgs boson production cross-sections, via $WH$ and $ZH$ associated production using $H\rightarrow WW^\ast\rightarrow\ell\nu\ell\nu$ and $H\rightarrow WW^\ast\rightarrow\ell\nu jj$ decays, are presented. The analysis uses proton-proton events delivered by the Large Hadron Collider at a centre-of-mass energy of 13 TeV and recorded by the ATLAS detector between 2015 and 2018. [...]
arXiv:2503.19420; CERN-EP-2025-037.- Geneva : CERN, 2025-08-05 - 76 p. - Published in : JHEP 2508 (2025) 034 Fulltext: ANA-HIGG-2023-09-PAPER - PDF; 2503.19420 - PDF; document - PDF; External link: Previous draft version

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Search for a new pseudoscalar decaying into a pair of bottom and antibottom quarks in top-associated production in $\sqrt{s}$=13 TeV proton–proton collisions with the ATLAS detector / ATLAS Collaboration
A search for a pseudoscalar $a$ produced in association with a top-quark pair, or in association with a single top quark plus a $W$ boson, with the pseudoscalar decaying into $b$-quarks ($a\rightarrow b\bar{b}$), is performed using the full Run 2 data sample using a dileptonic decay mode signature. The search covers pseudoscalar boson masses between 12-100 GeV and involves both the kinematic regime where the decay products of the pseudoscalar are reconstructed as two standard $b$-tagged small-radius jets, or merged into a large-radius jet due to its Lorentz boost. [...]
arXiv:2503.17254; CERN-EP-2025-060.- Geneva : CERN, 2025-08-19 - 36 p. - Published in : Eur. Phys. J. C 85 (2025) 886 Fulltext: ANA-HMBS-2024-46-PAPER - PDF; 2503.17254 - PDF; document - PDF; External link: Previous draft version

Detaljerad journal

Searches for direct slepton production in the compressed-mass corridor in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
This paper presents searches for the direct pair production of charged light-flavour sleptons, each decaying into a stable neutralino and an associated Standard Model lepton. The analyses focus on the challenging "corridor" region, where the mass difference, $\Delta m$, between the slepton ($\tilde{e}$ or $\tilde{\mu}$) and the lightest neutralino ($\tilde{\chi}^{0}_{1}$) is less or similar to the mass of the $W$ boson, $m(W)$, with the aim to close a persistent gap in sensitivity to models with $\Delta m \lesssim m(W)$. [...]
arXiv:2503.17186; CERN-EP-2025-039.- Geneva : CERN, 2025-08-06 - 66 p. - Published in : JHEP 2508 (2025) 053 Fulltext: 2503.17186 - PDF; document - PDF; External link: Previous draft version

Detaljerad journal

Search for heavy neutral leptons in decays of W bosons using leptonic and semi-leptonic displaced vertices in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
A search is performed for long-lived heavy neutral leptons (HNLs), produced through the decay of a $W$ boson along with a muon or electron. Two channels are explored: a leptonic channel, in which the HNL decays into two leptons and a neutrino, and a semi-leptonic channel, in which the HNL decays into a lepton and a charged pion. [...]
arXiv:2503.16213; CERN-EP-2025-052.- Geneva : CERN, 2025-07-17 - 53 p. - Published in : JHEP 2507 (2025) 196 Fulltext: 2503.16213 - PDF; publication - PDF; document - PDF; External link: Previous draft version

Detaljerad journal

Measurement of double-differential charged-current Drell-Yan cross-sections at high transverse masses in $pp$ collisions at $\sqrt{s} =$ 13 TeV with the ATLAS detector / ATLAS Collaboration
This paper presents a first measurement of the cross-section for the charged-current Drell-Yan process $pp\rightarrow W^{\pm} \rightarrow \ell^{\pm} \nu$ above the resonance region, where $\ell$ is an electron or muon. The measurement is performed for transverse masses, $m_{\text{T}}^{\text{W}}$, between 200 GeV and 5000 GeV, using a sample of 140 fb$^{-1}$ of $pp$ collision data at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV collected by the ATLAS detector at the LHC during 2015-2018 [...]
arXiv:2502.21088; CERN-EP-2025-032.- Geneva : CERN, 2025-07-02 - 64 p. - Published in : JHEP 2507 (2025) 026 Fulltext: 2502.21088 - PDF; document - PDF; External link: Previous draft version

Detaljerad journal

Measurement of $W^{\pm}$-boson differential cross-sections in proton-proton collisions with low pile-up data at $\sqrt{s} = 5.02$ TeV and $13$ TeV with the ATLAS detector / ATLAS Collaboration
High precision single-differential $W^\pm$-boson production cross-sections as a function of electron or muon transverse momentum $p_\mathrm{T}$ or their pseudorapity $\eta$, as well as double-differential cross-sections as functions of these variables, are measured in proton-proton collisions at centre-of-mass energies $\sqrt{s}=5.02$ TeV and 13 TeV. The $W$-boson charge asymmetry as a function of lepton $\eta$ is also measured. [...]
arXiv:2502.09403; CERN-EP-2025-009.- Geneva : CERN, 2025-07-02 - 32 p. - Published in : Eur. Phys. J. C 85 (2025) 729 Fulltext: 2502.09403 - PDF; document - PDF PDF; External link: Previous draft version

Detaljerad journal

10.

Search for long-lived charged particles using large specific ionisation loss and time of flight in 140 fb$^{-1}$ of $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper presents a search for massive, charged, long-lived particles with the ATLAS detector at the Large Hadron Collider using an integrated luminosity of 140 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}=13$ TeV. These particles are expected to move significantly slower than the speed of light. [...]
arXiv:2502.06694; CERN-EP-2025-008.- Geneva : CERN, 2025-07-11 - 56 p. - Published in : JHEP 2507 (2025) 140 Fulltext: 2502.06694 - PDF; document - PDF; External link: Previous draft version

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