| ATLAS Slides | |
| Report number | ATL-PHYS>-SLIDE-2024-521 |
| Title | Exploring the CP-sensitive STXS staging in the H→WW* decay channel by the ATLAS experiment |
| Author(s) | Marr, Metea Castilleja (Simon Fraser University (CA)) ; Basso, Matthew Joseph (TRIUMF (CA)) |
| Corporate author(s) | The ATLAS collaboration |
| Collaboration | ATLAS Collaboration |
| Submitted by | metea.castilleja.marr@cern.ch on 31 Oct 2024 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS |
| Free keywords | Higgs physics ; VBF/ggF production ; CP violation ; SMEFT ; HIGGS |
| Abstract | The current STXS Stage 1.2 binning is not sensitive to the charge-parity properties of the Higgs boson. Parallel to the ongoing effort to finalize the STXS Stage 1.3 bins, the ATLAS experiment has studied the potential for measuring CP-sensitive STXS-like bins the $H\rightarrow WW^\ast$ decay channel. This can be done by measuring cross-sections in bins of the signed azimuthal separation between the two leading jets, and by considering both the ggF and VBF production modes, CP-odd anomalous modifications to both Higgs-$V$ and Higgs-gluon effective couplings may be studied simultaneously. These anomalous effects are characterized by Effective Field Theory operators in the Warsaw basis and considering only the linear term from the SM-BSM interference. This note focuses on the motivation of the STXS-like binning and provides an overview of how CP violation may be probed using this strategy. |
Record created 2024-10-31, last modified 2024-10-31