The Chiral Lagrangian of CP-Violating Axion-Like Particles
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2023
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| author | Di Luzio, Luca Levati, Gabriele Paradisi, Paride |
| author_facet | Di Luzio, Luca Levati, Gabriele Paradisi, Paride |
| contents | We discuss the construction of the most general CP-violating chiral Lagrangian for an axion-like particle (ALP). Starting with an effective Lagrangian containing light quarks and gluons, we provide its matching onto a chiral effective Lagrangian at $\mathcal{O}(p^2)$ described in terms of mesons and baryons, identifying the correspondence between the Jarlskog invariants of the two theories. After deriving the ALP interactions with mesons and baryons, we analyse a few relevant phenomenological implications such as the permanent electric dipole moments of nucleons and the CP-violating ALP and kaon decays.This work provides the necessary tools for further phenomenological analyses connecting low-energy observables with the couplings of the underlying ultraviolet complete theory. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_12158 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | The Chiral Lagrangian of CP-Violating Axion-Like Particles Di Luzio, Luca Levati, Gabriele Paradisi, Paride High Energy Physics - Phenomenology High Energy Physics - Experiment We discuss the construction of the most general CP-violating chiral Lagrangian for an axion-like particle (ALP). Starting with an effective Lagrangian containing light quarks and gluons, we provide its matching onto a chiral effective Lagrangian at $\mathcal{O}(p^2)$ described in terms of mesons and baryons, identifying the correspondence between the Jarlskog invariants of the two theories. After deriving the ALP interactions with mesons and baryons, we analyse a few relevant phenomenological implications such as the permanent electric dipole moments of nucleons and the CP-violating ALP and kaon decays.This work provides the necessary tools for further phenomenological analyses connecting low-energy observables with the couplings of the underlying ultraviolet complete theory. |
| title | The Chiral Lagrangian of CP-Violating Axion-Like Particles |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2311.12158 |