PoS - Proceedings of Science
Volume 449 - The European Physical Society Conference on High Energy Physics (EPS-HEP2023) - T07 Top and Electroweak Physics
Measurement of same sign WW VBS processes at CMS with one hadronic tau in the final state
A. Piccinelli
Full text: pdf
Pre-published on: February 08, 2024
Published on: March 21, 2024
This contribution presents an investigation into the electroweak production of same-sign W boson pairs (ssWW) with a hadronically decaying tau lepton ($\tau_h$) in the final state. This study is based on proton-proton collisions at a center-of-mass energy of 13 TeV, as recorded by the CMS experiment at the CERN LHC, with an integrated luminosity of 138 fb$^{-1}$. This work delves deeper into the electroweak spontaneous symmetry breaking (EWSB) sector of the standard model (SM) of particle physics, focusing on Vector Boson Scattering (VBS) processes, which play a pivotal role in understanding the non-abelian structure of the SM. The article introduces a Machine Learning approach to enhance the identification of the final state in ssWW VBS processes. The results show an observed electroweak signal strength of $1.44_{−0.56}^{+0.63}$​, corresponding to a signal significance of 2.74 standard deviations. The study concludes with the intention to explore the sensitivity to indirect New Physics effects using the Standard Model Effective Field Theory (SMEFT) framework.
DOI: https://doi.org/10.22323/1.449.0322
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.