Observation of CP Violation in B± → DK± Decays (eBook)

Paolo Gandini (Autor)

eBook Download: PDF

2013 | 2014
XIX, 167 Seiten
Springer International Publishing (Verlag)
978-3-319-01029-8 (ISBN)

Infos

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 ? ?-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.

Paolo Gandini is a particle physicist mainly interested in Flavour Physics. As a member of the LHCb collaboration at CERN, he completed a D.Phil in Particle Physics at the University of Oxford with a thesis on CP violation studies in charged B decays. He is currently based at CERN as a postdoctoral researcher for Syracuse University, NY.

Inhalt

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.

Produkt-Details

• Erscheint lt. Verlag: 5.9.2013
• Reihe/Serie: Springer Theses
• Reihe/Serie: Springer Theses
• Zusatzinfo: XIX, 167 p. 127 illus., 115 illus. in color.
• Verlagsort: Cham
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Atom- / Kern- / Molekularphysik
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Theoretische Physik
• Themenwelt: Technik
• Schlagworte: CKM Matrix • Flavour Physics • LHCb Experiment • Matter-antimatter Asymmetry in B Mesons • Rare B Meson Decays • Standard Model of the Weak Interaction • Tests of CP Violation
• ISBN-10: 3-319-01029-8 / 3319010298
• ISBN-13: 978-3-319-01029-8 / 9783319010298