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Opportunistic CP violation [PDF]
Journal of High Energy Physics, 2023 In the electroweak sector of the Standard Model, CP violation arises through a very particular interplay between the three quark generations, as described by the Cabibbo-Kobayashi-Maskawa (CKM) mechanism and the single Jarlskog invariant J 4.
Quentin Bonnefoy +3 more
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Journal of High Energy Physics, 2021 Solutions of the Strong CP Problem based on the spontaneous breaking of CP must feature a non-generic structure and simultaneously explain a coincidence between a priori unrelated CP-even and CP-odd mass scales.
Alessandro Valenti, Luca Vecchi
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EPJ Web of Conferences, 2022 The existence of CP violation in the decays of strange and beauty mesons is very well established experimentally. On the contrary, CP violation in the decays of charmed particles has been elusive for a long time and has been observed for the first time ...
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Proceedings of International Europhysics Conference on High Energy Physics — PoS(hep2001), 2001 Several pieces of direct and indirect evidence now suggest that the Kobayashi-Maskawa mechanism plays a distinguished role for CP violation at the electroweak scale. This talk provides a general overview of CP violation in its various contexts, emphasizing CP violation in flavour-violating interactions, such as due to the Kobayashi-Maskawa mechanism. I
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Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021), 2022 10 pages, 1 figure.
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AIP Conference Proceedings, 1992 An overview of the phenomenology of CP violation is presented. The Standard Model mechanism of CP violation and its main experimental tests, both in the kaon and bottom systems, are discussed. (Lectures given at the 1993 Trieste Summer School and at the Escuela Latinoamericana de Fisica, ELAF'93, Argentina).
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Coloured gravitational instantons, the strong CP problem and the companion axion solution
European Physical Journal C: Particles and Fields, 2022 Quantum gravity introduces a new source of the combined parity (CP) violation in gauge theories. We argue that this new CP violation gets bundled with the strong CP violation through the coloured gravitational instantons. Consequently, the standard axion
Zhe Chen, Archil Kobakhidze
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Spontaneous CP violation and symplectic modular symmetry in Calabi-Yau compactifications
Nuclear Physics B, 2021 We explore the geometrical origin of CP and the spontaneous CP violation in Calabi-Yau compactifications. We find that the CP symmetry is identified with an outer automorphism of the symplectic modular group in the large complex structure regime of ...
Keiya Ishiguro +2 more
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International Journal of Modern Physics A, 2007 In this contribution to the Festschrift in honor of Bruce McKellar and Girish Joshi, I discuss a model proposed recently1 in which the CP violating phase in the CKM matrix is identical to the phase in the Higgs potential resulting from spontaneous CP violation.
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Spontaneous CP violation and the strong CP problem
Journal of High Energy Physics, 2017 We derive sufficient conditions that guarantee a robust solution of the strong CP problem in theories with spontaneous CP violation, and introduce a class of models satisfying these requirements. In the simplest scenarios the dominant contribution to the
Luca Vecchi
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