Constraints on anomalous Higgs boson couplings to vector bosons and fermions analyzing the γγ final state

Rajdeep Chatterjee¹, Fabrice Couderc², Federica De Riggi³, Emanuele Di Marco⁴, Xing-Fu Su^5*, Rohith Saradhy¹, You-Ying Li⁵, Victor Lohezic², Stathes Paganis⁵, Roger Rusack¹, Linda Finco⁷, Antonio Vagnerini⁶, Jahid Hossain⁶

¹School of Physics and Astronomy, University of Minnesota, Twin Cities, USA
²CEA-Saclay/IRFU, Gif-sur-Yvette, France
³Department of Physics, Sapienza Universit`a di Roma and INFN Roma1, Roma, Italy
⁴INFN Roma-1, Roma, Italy
⁵Department of Physics, National Taiwan University, Taipei, Taiwan
⁶University of Lincoln-Nebraska, USA
⁷Department of Physics, University of Torino & INFN, Italy

* Presenter:Xing-Fu Su, email:d07222005@ntu.edu.tw

We present a preliminary search for anomalous connections of the Higgs boson using the diphoton decay channel (H→γγ) using the complete run2 dataset from CMS. The dataset consists of proton-proton collision data collected by the CMS detector at the LHC, with an integrated luminosity of 137.6 fb^-1 at a center-of-mass energy of 13 TeV. The study investigates vector-boson-fusion (VBF), associated vector boson Higgs (VH) production and gluon-gluon fusion events with two additional jets to explore anomalous couplings. We use multivariate analysis to distinguish between the Standard Model (CP-even) and Beyond Standard Model (CP-odd and CP-even) categories in each production channel. We then use statistical inference to perform a maximum likelihood fit in each category to obtain constraints on the BSM anomalous coupling parameter. The expected results presented here are based on the UltraLegacy re-reco of the data and Monte Carlo samples.

Keywords: standard model, electroweak interaction, Higgs boson, Large Hadron Collider