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

Measured with the Collider Detector at Fermilab

Autori

• Sabato Leo

Parametri

• 137 pagine
• 5 ore di lettura

• Fisica
• Natura
• Natura, animali
• Scienze Naturali

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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.

Lingua: Inglese

Pubblicato: 2015

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