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New physics in spin entanglement
- Publication Year :
- 2024
-
Abstract
- We propose a theory that preserves spin-summed scattering and decay rates at tree level while affecting particle spins. This is achieved by breaking the Lorentz group in a non-local way that tries avoiding stringent constraints, for example leaving unbroken the maximal sub-group SIM(2). As a phenomenological application, this new physics can alter the spins of top-antitop pairs (and consequently their entanglement) produced in $pp$ collisions without impacting their rates. Some observables affected by loops involving top quarks with modified entanglement receive corrections.<br />Comment: 18 pages. Webinar presentation: https://youtu.be/HqBRXAHJn7k
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2403.14757
- Document Type :
- Working Paper