LLP2025: Fifteenth workshop of the Long-Lived Particle Community

Session

ATLAS, CMS, LHCb results I

3 Jun 2025, 11:30

València - ADEIT

Conveners

ATLAS, CMS, LHCb results I

• Lisa Benato (Austrian Academy of Sciences (AT))
• Federico Leo Redi (Università degli Studi e INFN Milano (IT))

84. Search for emerging jets in pp collisions at √s=13.6 TeV with the ATLAS experiment

Luka Selem (CNRS ­­– LPSC)

03/06/2025, 11:30

58. Searches for displaced Scalar decays to dimuons: LHCb’s extended reach in Run 3

Izaac Sanderswood (Univ. of Valencia and CSIC (ES))

03/06/2025, 11:50

A detailed study exploiting novel trigger and reconstruction techniques developed to search for Beyond Standard Model (BSM) Long-Lived Particles (LLPs) with very displaced vertices is presented. Building on feasibility studies that have successfully reconstructed Standard Model decays occurring up to 8 m forward of the interaction point in LHCb’s magnet region, the search for LLP particles...

63. CMS: Muon detector showers with B-parking dataset

Daniel Diaz (Univ. of California San Diego (US))

03/06/2025, 12:10

A search for signatures of a dark analog to quantum chromodynamics is performed. The analysis targets long-lived dark mesons that decay into standard model particles with a high branching fraction to muons. A unique dataset with $10^{10}$ B meson events is used. It was collected by the CMS experiment at the CERN LHC in 2018 using displaced muon triggers, which have a high trigger efficiency...

52. Search for displaced leptons in 13 TeV and 13.6 TeV 3 $pp$ collisions with the ATLAS detector

Yvonne Ng (Univ. Illinois at Urbana Champaign (US))

03/06/2025, 12:30

A search for leptons displaced from the primary vertex is performed with the ATLAS detector at the Large Hadron Collider. The search includes the full proton-proton collision dataset collected during Run 2 at $\sqrt{s} = 13$ TeV and a partial dataset collected during Run 3 in 2022-2023 at $\sqrt{s} = 13.6$ TeV, corresponding to integrated luminosities of $140 fb^{−1}$ and $56.3 fb^{−1}$,...

64. CMS: Dark showers in B-parked data

Kai Hong Law (Imperial College (GB))

03/06/2025, 12:50

Among the novel models that provide explanation to the nature of dark matter, hidden valley models include a dark sector that extends the Standard Model (SM) with a non-Abelian gauge group, similar to the SM quantum chromodynamics. They predict the production of dark showers, which are dark hadrons with high multiplicity, which can result in a rich phenomenology of displaced decays back into...