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Nominated as an outstanding Ph.D. thesis by the University of Pisa, Italy
Complete and detailed description of one of the most complicated analyses in the search for new physics in the quark flavor sector
Introduction provides a modern theoretical overview and discusses fundamental experimental aspects
Gives up-to-date comparison of sensitivity and performances of different experiments
A special chapter summarizes the latest status of the search for new physics in quark flavor sector
This thesis reports on the final measurement of the flavor-mixing phase in decays of strange-bottom mesons (B_s) into J/psi and phi mesons performed in high-energy proton-antiproton collisions recorded by the Collider Experiment at Fermilab.Interference occurs between direct decays and decays following virtual particle-antiparticle transitions (B_s-antiB_s). The phase difference between transition amplitudes (“mixing phase”) is observable and extremely sensitive to contributions from non-standard-model particles or interactions that may be very hard to detect otherwise – a fact that makes the precise measurement of the B_s mixing phase one of the most important goals of particle physics.The results presented include a precise determination of the mixing phase and a suite of other important supplementary results. All measurements are among the most precise available from a single experiment and provide significantly improved constraints on the phenomenology of new particles and interactions.
Content Level »Research
Keywords »Bs Decay-width Difference - Bs-antiBs - CDF Final Measurement - Constraints on Non-SM Particles - Flavor-mixing Phase - Mixing Phase - New Physics in Flavor - Non-standard-model Particles or Interaction Contributions - Polarization Amplitudes - Strange-bottom Mesons