SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 136: Higgs TH, VH

T 136.6: Vortrag

Donnerstag, 23. März 2023, 18:45–19:00, HSZ/0204

Extraction of the gluon-initiated component of the associated production of the Higgs boson and a vector boson with the CMS experiment — •Alena Dodonova¹, Alexander Schmidt¹, Xavier Coubez^1,2, Luca Mastrolorenzo¹, Andrey Pozdnyakov¹, Andrzej Novak¹, Spandan Mondal¹, Ming-Yan Lee¹, Annika Stein¹, Svenja Diekmann¹, Niclas Eich¹, and Martin Erdmann¹ — ¹III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany — ²Brown University, Providence, USA

Associated Higgs boson production with a Z boson (ZH) contains quark- and gluon-initiated components. The gluon-initiated component (gg → ZH) could be a good probe for the physics beyond the Standard Model (SM) since the effects of the new physics for the loop-induced processes would be of the same order as the SM process. Due to destructive interference between box and triangle contributions at the leading order, this component is suppressed with respect to the dominant quark-initiated contribution to ZH production.

In this talk, I will present the prospects to set an upper limit on the gg → ZH component in the H → bb decay channel using DNN classifier. The study is performed with the full Run 2 dataset collected with the CMS detector at the LHC at √s=13 TeV.