Observation of CP Violation in B± DK± Decays / / by Paolo Gandini

• Autore: Gandini Paolo
• Pubblicazione: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2014
• Edizione: 1st ed. 2014.
• Descrizione fisica: 1 online resource (179 p.)
• Disciplina: 530
• Soggetto topico: Particles (Nuclear physics); Quantum field theory; String models; Elementary Particles, Quantum Field Theory; Quantum Field Theories, String Theory
• Note generali: Doctoral Thesis accepted by the University of Oxford, UK.
• Nota di bibliografia: Includes bibliographical references.
• Nota di contenuto: Introduction -- CP violation in the SM and the CKM angle γ -- The LHCb experiment at the LHC -- Reconstruction and selection -- Background studies -- The simultaneous fit -- Results -- Conclusions -- Distributions of the BDT input variables -- Validation of the ApT variable -- Histograms of systematic errors -- Bibliography.
• Sommario/riassunto: CP violation is a well-established phenomenon in particle physics, but until 2001 it was only observed in kaons. In the last decade, several matter-antimatter asymmetries have been observed in neutral B mesons in line with the expectations of the Standard Model of the weak interaction. Direct CP violation is also expected in the decay rates of charged B+ mesons versus that of B- mesons, though the greatest effects are present in a decay that occurs just twice in 10 million decays. Such rarity requires huge samples to study and this is exactly what the LHC, and its dedicated B-physics experiment LHCb provide. This thesis presents an analysis of the first two years of LHCb data. The author describes the first observation of the rare decay, B- DK-, D π-K+ and the first observation of direct CP violation in this B decay. The work constitutes essential information on the experiment’s measurement of a fundamental parameter of the theory and stands as a benchmark against which subsequent analyses of this type will be compared.
• Titolo autorizzato: Observation of CP Violation in B± → DK± Decays
• ISBN: 3-319-01029-8
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910300391903321
• Lo trovi qui: Univ. Federico II
• Serie: Springer Theses, Recognizing Outstanding Ph.D. Research, . 2190-5053