Constrain on anomalous Higgs couplings in VH production with full Run2 H→γγ dataset

Xingfu Su^1*, Rohith Saradhy², Rajdeep Chatterjee³, Bhargav Joshi², You-Ying Li¹, Roger Rusack², Stathes Paganis¹

¹Department of Physics, National Taiwan University, Taipei, Taiwan
²School of Physics and Astronomy, University of Minnesota, Twin Cities, USA
³Tata Institute of Fundamental Research, TIFR, Mumbai, India

* Presenter:Xingfu Su, email:d07222005@ntu.edu.tw

In this study, we investigate the anomalous interaction between the Higgs boson and weak bosons through VH production with diphoton Higgs decay and leptonic decay in weak bosons. The data corresponds to an integrated luminosity of 138 fb⁻¹ at a centre-of-mass energy of 13 TeV gathered between 2016 and 2018. New machine-learning models were created to investigate anomalous HVV interactions, specifically in the anomalous CP-odd scenario. These models were based on earlier research into the signal strength of VH production in the Standard Model (SM). The signal regions have been defined using this updated approach, which also places limitations on anomalous HVV interactions. The plans for future improvement are also included in the present.

Keywords: Standard Model, Higgs boson, CMS, CP violation