Nov 7 – 11, 2022
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Gluon Jet Spherocity as a New Observable to Probe the CP Structure of Higgs-top Coupling - REMOTE

Nov 9, 2022, 4:00 PM
Sala Bianchi (Palazzo della Carovana)

Sala Bianchi

Palazzo della Carovana


Zhite Yu


It is an important task in the SM to constrain the CP property of the Higgs boson, which still exhibits a large uncertainty. We propose a novel observable at the LHC to probe the CP structure of Higgs coupling to the top quark by employing the linear polarization of gluon jets. The linear polarization induces a preferred direction for the azimuthal energy distribution in the gluon jet, which corresponds directly to the CP phase of the Higgs-top coupling. By constructing an infrared safe transverse spherocity observable for the gluon jet, we show that this new approach has a significant power in constraining the CP property of Higgs boson, complementary to the methods that are currently used in the experimental analysis.

Type of talk Theory

Primary author


C.-P. Yuan (Michigan State University) Kirtimaan Ajaykant Mohan

Presentation materials