About
Vector boson scattering (VBS) is a key process to study at the high-energy frontier. In particular longitudinal polarisation states of the boson have an intrinsic connection to the electroweak symmetry breaking and the Brout-Englert-Higgs mechanism. The Large Hadron Collider provides an unprecedented high-statistics dataset at the highest energy scale, enabling a comprehensive study of VBS, and search for deviations from Standard Model predictions. In this seminar, the first evidence of longitudinal boson polarisation in VBS through the study of electroweak production of same-sign W boson pairs obtained by ATLAS will be presented. The analysis techniques and innovations important for achieving this result will be discussed. In addition, the seminar will recap several ATLAS measurements of (longitudinal) boson polarization with inclusive diboson processes, which shared the path to establish the methodology of boson polarization measurement as well as to pursue next-level precision tests of the Standard Model.
Refreshments will be served at 10h30 .
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The talk
Credits and licence
- Institution
- CERN
- Department
- LHC Seminar
- Speaker
- Tairan Xu
- Year
- 2025
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed