HEP2025: 41st Conference on Recent Developments in High Energy Physics and Cosmology [NKUA]

Session

Session 6

2 Jul 2025, 14:30

“Alkis Argyriadis” Amphitheatre (National and Kapodistrian University of Athens)

Conveners

Session 6

• Georgios Daskalakis (Nat. Cent. for Sci. Res. Demokritos (GR))

7. CMS HGCAL Status

Dimitra Tsionou (National Taiwan University (TW))

02/07/2025, 14:30

The CMS Collaboration is getting ready to replace its current endcap calorimeters with a high-granularity calorimeter (HGCAL) for the HL-LHC era, featuring a previously unrealised transverse and longitudinal segmentation, for both the electromagnetic and hadronic compartments. The current design uses silicon sensors for the electromagnetic section and high-irradiation regions of the hadronic...

9. Measurements of the Higgs boson differential and production mode cross sections in the H->ZZ*->4l channel at √s = 13.6 TeV with the ATLAS detector

Konstantinos Sioulas (National and Kapodistrian University of Athens (GR))

02/07/2025, 15:00

A measurement of Higgs boson properties is pp collisions and the 4l decay channel using the data collected by the ATLAS detector in 2022 and 2023 at √s = 13.6 TeV is presented. Inclusive fiducial and total cross-sections are measured in addition to the differential cross-sections for the observables: pT4l, |y4l|, njets and the invariant mass of the sub-leading lepton pair in the event, m34....

22. Data-Driven Background Estimation for tt̄H(H→bb̄) in the Dilepton Channel with CMS

Haris Painesis (National and Kapodistrian University of Athens (GR))

02/07/2025, 15:20

Prospects for the measurement of top quark–antiquark associated Higgs boson production ($t\bar{t}H$) in Run 3 and the HL-LHC era are presented. The study is performed in the opposite-sign dilepton channel, focusing on the Higgs boson decay to bottom quarks ($H \rightarrow b\bar{b}$). A novel approach is introduced, and projection studies for the HL-LHC are explored. The analysis strategy...

25. Muon Reconstruction in the ATLAS Experiment for Phase-II

Dimitra Amperiadou (Aristotle University of Thessaloniki (GR))

02/07/2025, 15:40

Muon Reconstruction in the ATLAS Experiment for Phase-II

Towards the High Luminosity LHC era which is going to bring major improvements to the performance of the accelerator, the ATLAS detector is expected to be operational in a demanding environment. To maintain the performance of the track reconstruction under these conditions, the ATLAS software is undergoing a significant Phase II...