Journal article : Letter
High-energy decays and weak quantum measurements
- Abstract:
- High-energy particle decays naturally realise informationally weak measurements of quantum spin. Decay kinematics act as continuous pointer variables whose overlapping angular distributions encode partial, non-projective information about the parent spin state. Ensemble averages of these pointers yield weak values, linking collider spin-density reconstruction to Aharonov–Vaidman measurement theory. This framework unifies spin tomography, entangled-decay correlations, and spin-correlation algorithms, showing that relativistic decays realise informationally weak measurements of spin and suggesting new ways to probe coherence and interference in high-energy processes.
- Publication status:
- Published
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(Preview, Version of record, pdf, 279.0KB, Terms of use)
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- Publisher copy:
- 10.1140/epjc/s10052-026-15694-0
Authors
+ Science and Technology Facilities Council
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- Funder identifier:
- https://ror.org/057g20z61
- Grant:
- ST/R002444/1
+ John Templeton Foundation
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- Funder identifier:
- https://ror.org/035tnyy05
- Grant:
- 63206
- Publisher:
- SpringerOpen
- Journal:
- The European Physical Journal C More from this journal
- Volume:
- 86
- Issue:
- 4
- Article number:
- 410
- Publication date:
- 2026-04-25
- Acceptance date:
- 2026-04-11
- DOI:
- EISSN:
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1434-6052
- ISSN:
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1434-6044
- Language:
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English
- Subtype:
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Letter
- Source identifiers:
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3985941
- Deposit date:
-
2026-04-25
- ARK identifier:
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Terms of use
- Copyright date:
- 2026
- Licence:
- CC Attribution (CC BY)
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