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

• URL: http://arxiv.org/abs/2307.14895v2
• Date: Sun, 3 Mar 2024 03:19:46 GMT
• Title: New observables for testing Bell inequalities in $W$ boson pair production
• Authors: Qi Bi, Qing-Hong Cao, Kun Cheng, Hao Zhang
• Abstract summary: We show that testing Bell inequalities in $Wpm$ pair systems by measuring angular correlation suffers from the ambiguity in kinetical reconstruction of the di-lepton decay mode. We propose a new set of Bell observables based on the measurement of the linear polarization of the $W$ bosons.
• Score: 13.734489963548189
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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 di-lepton decay mode. We further propose a new set of Bell observables based on the measurement of the linear polarization of the $W$ bosons, providing a realistic observable to test Bell inequalities in $W^\pm$ pair systems for the first time.

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