Testing Bell inequalities and probing quantum entanglement at a muon collider
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866909319634616320 |
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| author | Ruzi, Alim Wu, Youpeng Ding, Ran Qian, Sitian Levin, Andrew Micheal Li, Qiang |
| author_facet | Ruzi, Alim Wu, Youpeng Ding, Ran Qian, Sitian Levin, Andrew Micheal Li, Qiang |
| contents | A muon collider represents a promising candidate for the next generation of particle physics experiments after the expected end of LHC operations in the early 2040s. Rare or hard-to-detect processes at the LHC, such as the production of multiple gauge bosons, become accessible at a TeV muon collider. We present here the prospects of detecting quantum entanglement and the violation of Bell inequalities in H to ZZ to 4l events at a potential future muon collider. We show that the spin density matrix of the Z boson pairs can be reconstructed using the kinematics of the charged leptons from the Z boson decays. Once the density matrix is determined, it is straightforward to obtain the expectation values of various Bell operators and test the quantum entanglement between the Z boson pair. Through a detailed study based on Monte-Carlo simulation, we show that the generalized CGLMP inequality can be maximally violated, and testing Bell inequalities could be established with high significance. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_05429 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Testing Bell inequalities and probing quantum entanglement at a muon collider Ruzi, Alim Wu, Youpeng Ding, Ran Qian, Sitian Levin, Andrew Micheal Li, Qiang High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics A muon collider represents a promising candidate for the next generation of particle physics experiments after the expected end of LHC operations in the early 2040s. Rare or hard-to-detect processes at the LHC, such as the production of multiple gauge bosons, become accessible at a TeV muon collider. We present here the prospects of detecting quantum entanglement and the violation of Bell inequalities in H to ZZ to 4l events at a potential future muon collider. We show that the spin density matrix of the Z boson pairs can be reconstructed using the kinematics of the charged leptons from the Z boson decays. Once the density matrix is determined, it is straightforward to obtain the expectation values of various Bell operators and test the quantum entanglement between the Z boson pair. Through a detailed study based on Monte-Carlo simulation, we show that the generalized CGLMP inequality can be maximally violated, and testing Bell inequalities could be established with high significance. |
| title | Testing Bell inequalities and probing quantum entanglement at a muon collider |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics |
| url | https://arxiv.org/abs/2408.05429 |