Quantum tomography at colliders: With or without decays
In constructing quantum states at colliders, most efforts have focused on utilizing the particle decays to infer the spins to reconstruct the quantum density matrix. We show that the production kinematics of the particles provides sufficient information about the spins to establish quantum tomograph...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325004368 |
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| author | Kun Cheng Tao Han Matthew Low |
| author_facet | Kun Cheng Tao Han Matthew Low |
| author_sort | Kun Cheng |
| collection | DOAJ |
| description | In constructing quantum states at colliders, most efforts have focused on utilizing the particle decays to infer the spins to reconstruct the quantum density matrix. We show that the production kinematics of the particles provides sufficient information about the spins to establish quantum tomography event-by-event without using the decays. We lay out the advantages of using this “kinematic approach” relative to the usual “decay approach.” Since the kinematic approach leverages the simplicity of scattering kinematics, this approach promises to achieve optimal statistical results for quantum tomography at colliders. |
| format | Article |
| id | doaj-art-e118c959d53c4ba28b51f2f4dc4dd46d |
| institution | Matheson Library |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-e118c959d53c4ba28b51f2f4dc4dd46d2025-07-02T04:49:26ZengElsevierPhysics Letters B0370-26932025-09-01868139675Quantum tomography at colliders: With or without decaysKun Cheng0Tao Han1Matthew Low2Corresponding author.; PITT PACC, Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara St., Pittsburgh, PA 15260, USAPITT PACC, Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara St., Pittsburgh, PA 15260, USAPITT PACC, Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara St., Pittsburgh, PA 15260, USAIn constructing quantum states at colliders, most efforts have focused on utilizing the particle decays to infer the spins to reconstruct the quantum density matrix. We show that the production kinematics of the particles provides sufficient information about the spins to establish quantum tomography event-by-event without using the decays. We lay out the advantages of using this “kinematic approach” relative to the usual “decay approach.” Since the kinematic approach leverages the simplicity of scattering kinematics, this approach promises to achieve optimal statistical results for quantum tomography at colliders.http://www.sciencedirect.com/science/article/pii/S0370269325004368 |
| spellingShingle | Kun Cheng Tao Han Matthew Low Quantum tomography at colliders: With or without decays Physics Letters B |
| title | Quantum tomography at colliders: With or without decays |
| title_full | Quantum tomography at colliders: With or without decays |
| title_fullStr | Quantum tomography at colliders: With or without decays |
| title_full_unstemmed | Quantum tomography at colliders: With or without decays |
| title_short | Quantum tomography at colliders: With or without decays |
| title_sort | quantum tomography at colliders with or without decays |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325004368 |
| work_keys_str_mv | AT kuncheng quantumtomographyatcolliderswithorwithoutdecays AT taohan quantumtomographyatcolliderswithorwithoutdecays AT matthewlow quantumtomographyatcolliderswithorwithoutdecays |