CP Violation in {B_s}^0 -> J/psi.phi Decays

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The thesis focuses on the precise measurement of the flavor-mixing phase in decays of strange-bottom mesons (B_s) into J/psi and phi mesons, utilizing high-energy proton-antiproton collisions at Fermilab. It highlights the significance of the mixing phase, which is sensitive to non-standard-model particles and interactions. The findings include a detailed determination of the mixing phase and other crucial supplementary results, offering some of the most accurate measurements from a single experiment, thereby enhancing the understanding of new particles and interactions in particle physics.