Di Luzio, L. and Levati, G. and Paradisi, P. and Ponce Dìaz, X. (2024) Low-energy flavour probes of light vector bosons. Il nuovo cimento C, 47 (1). pp. 1-8. ISSN 1826-9885
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Abstract
In this work, we construct the chiral Lagrangian for a light spin-1 boson X possessing both vectorial and axial couplings to the light Standard Model quarks u, d, s. We then use it in order to describe the tree-level, model-independent contributions to the ΔS = 1 transition K± → π±X, which is induced by Standard Model charged currents and is possibly enhanced by the emission of a longitudinally polarized X boson. Such a flavour observable is then shown to set the best modelindependent bounds on the diagonal axial couplings of X to light quarks in the mass range allowed by the decay kinematics, improving the currently available constraints from beam-dump experiments and collider searches.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 11 Dec 2023 02:59 |
| Last Modified: | 11 Dec 2023 02:59 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/22554 |
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