17–24 Jul 2024
Prague
Europe/Prague timezone

New observables for testing Bell inequalities in $W$ boson pair production

20 Jul 2024, 11:45
15m
Club E

Club E

Parallel session talk 04. Top Quark and Electroweak Physics Top Quark and Electroweak Physics

Speaker

Hao Zhang (Theoretical Physics Division, Institute of High Energy Physics, Chinese Academy of Sciences)

Description

We show that testing Bell inequalities in $W^\pm$ pair systems by measuring their angular correlation suffers from the ambiguity in kinetical reconstruction of the dilepton decay mode. We further propose a new set of Bell observables based on the measurement of the linear polarization of the $W$ bosons that can be used in the semileptonic decay mode of $W^\pm$ pair, and we analyze the prospects of testing the violation of Bell inequalities at $e^+e^-$ colliders.

Alternate track 03. Beyond the Standard Model
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Author

Hao Zhang (Theoretical Physics Division, Institute of High Energy Physics, Chinese Academy of Sciences)

Co-authors

Kun Cheng (Peking University) Dr Qi Bi (Beihang University) qinghong cao (Peking University)

Presentation materials