Relative Phases in Dalitz Plots for D 0 & Rarr; 3 Pseudoscalars PDF Download
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Author: Bhubanjyoti Bhattacharya
Publisher:
ISBN: 9781267071026
Category :
Languages : en
Pages : 80
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Book Description
We discuss the role of flavor-SU(3) symmetry in determining relative phases in charm decays. Relative strong phases in D decays play an important part in the precise determination of the phase gamma in the unitarity triangle for the quark-mixing matrix. Flavor SU(3) provides a successful framework for studying D decays to a pair of pseudoscalars. We briefly review the flavor-SU(3) parametrization in D & rarr; PP processes and its extension to study D decays to a vector and a pseudoscalar. We present a fit to Cabibbo-favored D & rarr; PV decays to determine relevant flavor-SU(3) parameters, and use these to study three-body D-decay Dalitz plots. We study relative strong phases arising from the presence of intermediate vector resonance modes in three-body D decays, using our flavor-SU(3) parametrization of D & rarr; PV decays. The sign of the vector meson decay amplitude is important in determining relative phases, and we note that in most cases proper sign convention has been used. Cross-ratio measurements from multiple Dalitz plots seem to agree with flavor-SU(3) predictions more than phases of amplitudes that are dependent on flavor-SU(3) parametrization and hence susceptible to corrections from flavor breaking. Measured relative phases seem to disagree with flavor calculations up to about 20° in most cases. We offer solutions to this discrepancy. The flavor-SU(3) predictions seem to be different from measurements in the D0 & rarr; KSK+/- pi & mnplus; channels making these a prime target for reanalysis in the future.
Author: Bhubanjyoti Bhattacharya
Publisher:
ISBN: 9781267071026
Category :
Languages : en
Pages : 80
Get Book Here
Book Description
We discuss the role of flavor-SU(3) symmetry in determining relative phases in charm decays. Relative strong phases in D decays play an important part in the precise determination of the phase gamma in the unitarity triangle for the quark-mixing matrix. Flavor SU(3) provides a successful framework for studying D decays to a pair of pseudoscalars. We briefly review the flavor-SU(3) parametrization in D & rarr; PP processes and its extension to study D decays to a vector and a pseudoscalar. We present a fit to Cabibbo-favored D & rarr; PV decays to determine relevant flavor-SU(3) parameters, and use these to study three-body D-decay Dalitz plots. We study relative strong phases arising from the presence of intermediate vector resonance modes in three-body D decays, using our flavor-SU(3) parametrization of D & rarr; PV decays. The sign of the vector meson decay amplitude is important in determining relative phases, and we note that in most cases proper sign convention has been used. Cross-ratio measurements from multiple Dalitz plots seem to agree with flavor-SU(3) predictions more than phases of amplitudes that are dependent on flavor-SU(3) parametrization and hence susceptible to corrections from flavor breaking. Measured relative phases seem to disagree with flavor calculations up to about 20° in most cases. We offer solutions to this discrepancy. The flavor-SU(3) predictions seem to be different from measurements in the D0 & rarr; KSK+/- pi & mnplus; channels making these a prime target for reanalysis in the future.
Author: Herwig Schopper
Publisher: Springer Nature
ISBN: 3030382079
Category : Heavy ions
Languages : en
Pages : 632
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Book Description
This first open access volume of the handbook series contains articles on the standard model of particle physics, both from the theoretical and experimental perspective. It also covers related topics, such as heavy-ion physics, neutrino physics and searches for new physics beyond the standard model. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Author: I. I. Bigi
Publisher: Cambridge University Press
ISBN: 1139478249
Category : Science
Languages : en
Pages : 1
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Book Description
Why didn't the matter in our Universe annihilate with antimatter immediately after its creation? The study of CP violation may help to answer this fundamental question. This book presents theoretical tools necessary to understand this phenomenon. Reflecting the explosion of new results over the last decade, this second edition has been substantially expanded. It introduces charge conjugation, parity and time reversal, before describing the Kobayashi-Maskawa (KM) theory for CP violation and our understanding of CP violation in kaon decays. It reveals how the discovery of B mesons has provided a new laboratory to study CP violation with KM theory predicting large asymmetries, and discusses how these predictions have been confirmed since the first edition of this book. Later chapters describe the search for a new theory of nature's fundamental dynamics. This book is suitable for researchers in high energy, atomic and nuclear physics, and the history and philosophy of science.
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 612
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Book Description
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1248
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Book Description
Author: Palash B. Pal
Publisher: Taylor & Francis
ISBN: 1482216981
Category : Science
Languages : en
Pages : 818
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Book Description
For graduate students unfamiliar with particle physics, An Introductory Course of Particle Physics teaches the basic techniques and fundamental theories related to the subject. It gives students the competence to work out various properties of fundamental particles, such as scattering cross-section and lifetime. The book also gives a lucid summary of the main ideas involved. In giving students a taste of fundamental interactions among elementary particles, the author does not assume any prior knowledge of quantum field theory. He presents a brief introduction that supplies students with the necessary tools without seriously getting into the nitty-gritty of quantum field theory, and then explores advanced topics in detail. The book then discusses group theory, and in this case the author assumes that students are familiar with the basic definitions and properties of a group, and even SU(2) and its representations. With this foundation established, he goes on to discuss representations of continuous groups bigger than SU(2) in detail. The material is presented at a level that M.Sc. and Ph.D. students can understand, with exercises throughout the text at points at which performing the exercises would be most beneficial. Anyone teaching a one-semester course will probably have to choose from the topics covered, because this text also contains advanced material that might not be covered within a semester due to lack of time. Thus it provides the teaching tool with the flexibility to customize the course to suit your needs.
Author: Sheldon Stone
Publisher: World Scientific
ISBN: 9789810218362
Category : Science
Languages : en
Pages : 676
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Book Description
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.
Author: Murray Gell-mann
Publisher: CRC Press
ISBN: 0429976240
Category : Science
Languages : en
Pages : 331
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Book Description
This monograph presents thirty research papers dealing with the classification of strongly interacting particles and their interaction according to the eightfold way. In each chapter the authors' commentary introduces the reprints.
Author: Andrzej J. Buras
Publisher: Cambridge University Press
ISBN: 1108882757
Category : Science
Languages : en
Pages : 739
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Book Description
This is the first advanced, systematic and comprehensive look at weak decays in the framework of gauge theories. Included is a large spectrum of topics, both theoretical and experimental. In addition to explicit advanced calculations of Feynman diagrams and the study of renormalization group strong interaction effects in weak decays, the book is devoted to the Standard Model Effective Theory, dominating present phenomenology in this field, and to new physics models with the goal of searching for new particles and interactions through quantum fluctuations. This book will benefit theorists, experimental researchers, and Ph.D. students working on flavour physics and weak decays as well as physicists interested in physics beyond the Standard Model. In its concern for the search for new phenomena at short distance scales through the interplay between theory and experiment, this book constitutes a travel guide to physics far beyond the scales explored by the Large Hadron Collider at CERN.
Author: John Iliopoulos
Publisher: Oxford University Press
ISBN: 0192658166
Category : Science
Languages : en
Pages : 522
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Book Description
Since the development of natural philosophy in Ancient Greece, scientists have been concerned with determining the nature of matter's smallest constituents and the interactions among them. This textbook examines the question of the microscopic composition of matter through an accessible introduction to what is now called 'The Physics of Elementary Particles'. In the last few decades, elementary particle physics has undergone a period of transition, culminating in the formulation of a new theoretical scheme, known as 'The Standard Model', which has profoundly changed our understanding of nature's fundamental forces. Rooted in the experimental tradition, this new vision is based on geometry and sees the composition of matter in terms of its accordance with certain geometrical principles. This textbook presents and explains this modern viewpoint to a readership of well-motivated undergraduate students, by guiding the reader from the basics to the more advanced concepts of Gauge Symmetry, Quantum Field Theory and the phenomenon of spontaneous symmetry breaking through concrete physical examples. This engaging introduction to the theoretical advances and experimental discoveries of the last decades makes this fascinating subject accessible to undergraduate students and aims at motivating them to study it further.
