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CERN Document Server 11 records found  1 - 10next  jump to record: Search took 1.08 seconds. 
1.
Search for neutral long-lived particles that decay into displaced jets in the ATLAS calorimeter in association with leptons or jets using $pp$ collisions at $\sqrt{s}=13$ TeV / ATLAS Collaboration
A search for neutral long-lived particles (LLPs) decaying in the ATLAS hadronic calorimeter using 140 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}=13$ TeV delivered by the LHC is presented. The analysis is composed of three channels. [...]
arXiv:2407.09183; CERN-EP-2024-181.- Geneva : CERN, 2024-11-06 - 51 p. - Published in : JHEP 2411 (2024) 036 Fulltext: ANA-EXOT-2022-04-PAPER - PDF; 2407.09183 - PDF; document - PDF; External link: Previous draft version
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2.

CMS-PHO-EVENTS-2024-024
© 2024 CERN, for the benefit of the CMS Collaboration 		Search for long-lived heavy neutral leptons with lepton flavour conserving or violating decays to a jet and a charged lepton
An event seen in a search for long-lived heavy neu [...]
06/06/2024
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3.
Search for vector-like quarks, heavy neutral leptons and long-lived particles in ATLAS and CMS experiments / Grancagnolo, Sergio (INFN Lecce e Universita del Salento (IT)) /ATLAS Collaboration
Various theories beyond the Standard Model predict heavy neutral leptons, or long-lived particles with unique signatures which are difficult to reconstruct. Another area of interest are vector-like quarks (VLQs) which lie at the heart of many extensions to the Standard Model seeking to address the Hierarchy Problem, as they can naturally cancel the mass divergence for the Higgs boson. [...]
ATL-PHYS-SLIDE-2024-060.- Geneva : CERN, 2024 Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : 58th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 24 - 31 Mar 2024
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4.
Searches For Long-Lived Particles and Other Exotica at the LHC / Carlson, Evan Michael (University of Victoria (CA)) /ATLAS Collaboration
The ATLAS and CMS experiments at the LHC are currently searching for a long-lived particles and other exotica with a wide range of signatures. This talk will summarize recent results from both experiments that rely on novel and challenging signatures to probe numerous models of physics beyond the Standard Model, including supersymmetry, twin Higgs models, and inelastic dark matter models..
ATL-PHYS-SLIDE-2023-390.- Geneva : CERN, 2023 - 32 p. Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : Windows on the Universe 30th Anniversary of the Rencontres du Vietnam, Quy Nhon, Vn, 6 - 12 Aug 2023
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5.
Search for light long-lived neutral particles that decay to collimated pairs of leptons or light hadrons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for light long-lived neutral particles with masses in the O(MeV-GeV) range is presented. The analysis targets the production of long-lived dark photons in the decay of a Higgs boson produced via gluon-gluon fusion or in association with a W boson. [...]
arXiv:2206.12181; CERN-EP-2022-054.- Geneva : CERN, 2023-06-23 - 52 p. - Published in : JHEP 2306 (2023) 153 Fulltext: 2206.12181 - PDF; document - PDF; External link: Previous draft version
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6.
Displaced Vertex Search for Heavy Neutral Leptons with the ATLAS Detector / Trischuk, Dominique Anderson (Brandeis University (US))
The results of a search for long-lived heavy neutral leptons (HNLs) in proton-proton collisions at the Large Hadron Collider are presented. [...]
ATL-PHYS-PROC-2022-037. - 2022. - 7 p.
Original Communication (restricted to ATLAS) - Full text
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7.
Search for heavy neutral leptons in decays of $W$ bosons using a dilepton displaced vertex in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
A search for a long-lived, heavy neutral lepton ($\mathcal{N}$) in 139 fb$^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collision data collected by the ATLAS detector at the Large Hadron Collider is reported. The $\mathcal{N}$ is produced via $W \rightarrow \mathcal{N} \mu$ or $W \rightarrow \mathcal{N} e$ and decays into two charged leptons and a neutrino, forming a displaced vertex. [...]
arXiv:2204.11988; CERN-EP-2022-017.- 2023-08-07 - 23 p. - Published in : Phys. Rev. Lett. 131 (2023) 061803 Fulltext: 2204.11988 - PDF; Publication - PDF; External link: Previous draft version
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8.
Search for neutral long-lived particles in $pp$ collisions at $ \sqrt{s} $ = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter / ATLAS Collaboration
A search for decays of pair-produced neutral long-lived particles (LLPs) is presented using 139 fb$^{-1}$ of proton-proton collision data collected by the ATLAS detector at the LHC in 2015-2018 at a centre-of-mass energy of 13 TeV. Dedicated techniques were developed for the reconstruction of displaced jets produced by LLPs decaying hadronically in the ATLAS hadronic calorimeter. [...]
arXiv:2203.01009; CERN-EP-2022-002.- Geneva : CERN, 2022-06-01 - 47 p. - Published in : JHEP 2206 (2022) 005 Fulltext: document - PDF; 2203.01009 - PDF; External link: Previous draft version
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9.
Searches for BSM physics using challenging and long-lived signatures with the ATLAS detector / Grancagnolo, Sergio (Humboldt University of Berlin (DE)) /ATLAS Collaboration
Various theories beyond the Standard Model predict new, long-lived particles with unique signatures which are difficult to reconstruct and for which estimating the background rates is also a challenge. Signatures from displaced and/or delayed decays anywhere from the inner detector to the muon spectrometer, as well as those of new particles with fractional or multiple values of the charge of the electron or high mass stable charged particles are all examples of experimentally demanding signatures. [...]
ATL-PHYS-SLIDE-2021-670.- Geneva : CERN, 2021 Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
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10.
Feebly Interacting Particles 2020 - FIPs 2020   31 Aug - 4 Sep 2020  - Online, Suisse  .-
2020
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