03574nam 22006015 450 991030039190332120220307210730.03-319-01029-810.1007/978-3-319-01029-8(CKB)2670000000423558(EBL)1474320(SSID)ssj0001010796(PQKBManifestationID)11594929(PQKBTitleCode)TC0001010796(PQKBWorkID)11000549(PQKB)10618347(MiAaPQ)EBC1474320(DE-He213)978-3-319-01029-8(PPN)172423392(EXLCZ)99267000000042355820130905d2014 u| 0engur|n|---|||||txtccrObservation of CP Violation in B± DK± Decays /by Paolo Gandini1st ed. 2014.Cham :Springer International Publishing :Imprint: Springer,2014.1 online resource (179 p.)Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Doctoral Thesis accepted by the University of Oxford, UK.3-319-01028-X Includes bibliographical references.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.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.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Elementary particles (Physics)Quantum field theoryString theoryElementary Particles, Quantum Field Theoryhttps://scigraph.springernature.com/ontologies/product-market-codes/P23029Quantum Field Theories, String Theoryhttps://scigraph.springernature.com/ontologies/product-market-codes/P19048Elementary particles (Physics).Quantum field theory.String theory.Elementary Particles, Quantum Field Theory.Quantum Field Theories, String Theory.530Gandini Paoloauthttp://id.loc.gov/vocabulary/relators/aut791345BOOK9910300391903321Observation of CP Violation in B± → DK± Decays1768724UNINA