8–11 Jul 2024
The University of Tokyo, Japan
Asia/Tokyo timezone

Prospects of measuring quantum entanglement in H->tautau at a future e+e- Higgs factory

9 Jul 2024, 09:50
20m
Ito Hall (Ito International Research Center)

Ito Hall

Ito International Research Center

Oral presentation (in person) Higgs, Electro-Weak Higgs, Electroweak

Speaker

Mr Cedric Breuning (University of Bonn)

Description

Final states with spin-correlations allow the measurement of quantum entanglement at collider energies. The $H\to\tau\tau$ process is an excellent probe for this, due to the scalar nature of the Higgs boson, and the direct access to the $\tau$-lepton helicity through the angular distributions of the $\tau$-lepton decay products. We will present the prospects of such a measurement a future $e^+e^-$ Higgs factory using Delphes simulation samples for the signal and the relevant background processes. The construction of observables sensitive to quantum entanglement of the $\tau$-$\tau$ system will be discussed together with the impact of reconstruction and event selection effects on the sensitivity.

Apply for poster award Yes

Author

Mr Cedric Breuning (University of Bonn)

Co-authors

Christian Grefe (University of Bonn (DE)) Klaus Desch (University of Bonn (DE)) Philip Bechtle (Universitaet Bonn (DE))

Presentation materials

Peer reviewing

Paper