Time-Dependent CP Violation Measurements

Time-Dependent CP Violation Measurements

Author: Markus Röhrken

Publisher: Springer Science & Business Media

Published: 2013-10-17

Total Pages: 205

ISBN-13: 3319007262

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This thesis describes a high-quality, high-precision method for the data analysis of an interesting elementary particle reaction. The data was collected at the Japanese B-meson factory KEKB with the Belle detector, one of the most successful large-scale experiments worldwide. CP violation is a subtle quantum effect that makes the world look different when simultaneously left and right and matter and antimatter are exchanged. This being a prerequisite for our own world to have developed from the big bang, there are only a few experimental indications of such effects, and their detection requires very intricate techniques. The discovery of CP violation in B meson decays garnered Kobayashi and Maskawa, who had predicted these findings as early as 1973, the 2008 Nobel prize in physics. This thesis describes in great detail what are by far the best measurements of branching ratios and CP violation parameters in two special reactions with two charm mesons in the final state. It presents an in-depth but accessible overview of the theory, phenomenology, experimental setup, data collection, Monte Carlo simulations, (blind) statistical data analysis, and systematic uncertainty studies.


B Decays

B Decays

Author: Sheldon Stone

Publisher: World Scientific

Published: 1994

Total Pages: 676

ISBN-13: 9789810218362

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This 2nd edition is an extensive update of "B Decays?. The revisions are necessary because of the extensive amount of new data and new theoretical ideas. This book reviews what is known about b-quark decays and also looks at what can be learned in the future.The importance of this research area is increasing, as evidenced by the approval of the luminosity upgrade for CESR and the asymmetric B factories at SLAC and KEK, and the possibility of experiments at hadron colliders.The key experimental observations made thus far, measurement of the lifetimes of the different B species, B0-B0 mixing, the discovery of ?Penguin? mediated decays, and the extraction of the CKM matrix elements Vub and Vcb from semileptonic decays, as well as more mundane results, are described in great detail by the experimentalists who have been closely involved with making the measurements. Theoretical progress in understanding b-quark decays using HQET and lattice gauge techniques are described by theorists who have developed and used these techniques.Synthesizing the experimental and theoretical information, several articles discuss the implications for the ?Standard Model? and how further tests can be done using measurements of CP violation in the B system.


Island Shores, Distant Pasts

Island Shores, Distant Pasts

Author: Scott M. Fitzpatrick

Publisher: University Press of Florida

Published: 2017-05-09

Total Pages: 246

ISBN-13: 0813063140

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"An excellent compilation of new methods and theories in Caribbean archaeology. . . . Not only materialize[s] the methodological advance in Caribbean archaeology, but also signif[ies] the strong theoretical progression that this discipline is experiencing."--Journal of Caribbean Archaeology "Look[s] beyond the field of archaeology to include new techniques from genetics, computer simulation, and physical anthropology. . . . Unquestionably moves our understanding of the settling of the Caribbean forward and provides several new provocative avenues for further exploration."--New West Indian Guide "Demonstrate[s] various methods that introduce new insights into the investigation of Caribbean prehistory, revealing the complexity of pre-Columbian cultures, peoples, and their movements. . . . [and] contributes to a totalizing view of the colonization process in the Caribbean."--Caribbean Quarterly "Can be considered as a real starting point for a biological approach of the pre-Columbian settlement of the Caribbean."-- Benoit Berard, Universite des Antilles For more than a century, archaeologists and anthropologists have searched for evidence of when and how peoples first settled the Caribbean islands. Research on this area is pivotal for understanding the migration of peoples in the New World and how small and large populations develop biologically and culturally through time. This unique collection synthesizes our archaeological and biological knowledge about the pre-Columbian settlement of the Caribbean and highlights the various techniques we can use to analyze human migration and settlement patterns throughout history. Newer and well-established techniques, like computer simulations of seafaring, radiocarbon dating, three-dimensional and traditional craniometrics, stable isotopes, and ancient and modern DNA analysis, show great promise for helping us better understand pre-Columbian Caribbean population expansions, while demonstrating the utility of integrating and comparing biological markers with the archaeological record. Surprisingly little attention has been paid to migrations, population movements, and island colonization in the Caribbean islands. This volume fills that void. Scott M. Fitzpatrick is professor of archaeology at the University of Oregon and founding coeditor of the Journal of Island and Coastal Archaeology. Ann H. Ross is professor of biological sciences at North Carolina State University. She is a contributor to Digging Deeper: Current Trends and Future Directions in Forensic Anthropology and Archaeology. A volume in the series Bioarchaeological Interpretations of the Human Past, edited by Clark Spencer Larsen


Polarization and CP Violation Measurements

Polarization and CP Violation Measurements

Author: Michael Prim

Publisher: Springer Science & Business Media

Published: 2014-03-28

Total Pages: 111

ISBN-13: 3319057561

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This thesis describes the thorough analysis of the rare B meson decay into φ K* on data taken by the Belle Collaboration at the B-meson-factory KEKB over 10 years. This reaction is very interesting, because it in principle allows the observation of CP-violation effects. In the Standard Model however, no CP violation in this reaction is expected. An observation of CP asymmetries thus immediately implies new physics. This thesis presents an amplitude analysis of this decay and the search for CP violation in detail and discusses methods to solve related problems: The quantification of multivariate dependence and the improvement of numeric evaluation speed of normalization integrals in amplitude analysis. In addition it provides an overview of the theory, experimental setup, (blind) statistical data analysis and estimation of systematic uncertainties.


BCP4

BCP4

Author: A. Ichiro Sanda

Publisher: World Scientific

Published: 2001

Total Pages: 388

ISBN-13: 9789810246617

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This book offers the first strong evidence of the existence of CP violation in neutral B decays extracted from sophisticated B factories in the US and Japan. It also holds out the expectation of rare B decays and D, K physics in the near future. In addition, new physics beyond the Standard Model is described. Both experimental and theoretical points of view are given.


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

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

Author: Sabato Leo

Publisher: Springer

Published: 2014-07-24

Total Pages: 146

ISBN-13: 3319079298

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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.