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| Author | : Wanwei- Wu |
| Publisher | : |
| Total Pages | : 38 |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
| Author | : Sheldon Stone |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2022 |
| Genre | : Beta decay |
| ISBN | : 9789811251306 |
"The Standard Model (SM) of particle physics has withstood thus far every attempt by experimentalists to show that it does not describe data. We discuss the SM in some detail, focusing on the mechanism of fermion mixing, which represents one of its most intriguing aspect. We discuss how this mechanism can be tested in b-quark decays, and how b decays can be used to extract information on physics beyond the SM. We review experimental techniques in b physics, focusing on recent results and highlighting future prospects. Particular attention is devoted to recent results from b decays into a hadron, a lepton and an anti-lepton, that show discrepancies with the SM predictions - the so-called B-physics anomalies - whose statistical significance has been increasing steadily. We discuss these experiments in a detailed manner, and also provide theoretical interpretation of these results in terms of physics beyond the SM"--
| Author | : Aneesh V. Manohar |
| Publisher | : Cambridge University Press |
| Total Pages | : 205 |
| Release | : 2023-07-31 |
| Genre | : Science |
| ISBN | : 1009402145 |
| Author | : Sheldon Stone |
| Publisher | : World Scientific |
| Total Pages | : 676 |
| Release | : 1994 |
| Genre | : Science |
| ISBN | : 9789810218973 |
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 | : |
| Publisher | : |
| Total Pages | : 6 |
| Release | : 2011 |
| Genre | : |
| ISBN | : |
Decays of B mesons to states involving [tau] leptons can be used as a tool to search for the effects of new physics, such as those involving a charged Higgs boson. The experimental status of the decays B → [tau][nu] and B → D{sup (*)}[tau][nu] is discussed, together with limits on new physics effects from current results. Leptonic and semileptonic decays of B mesons into states involving [tau] leptons remain experimentally challenging, but can prove a useful tool for constraining Standard Model parameters, and also offer to constrain the effects of any new physics that may exist including the presence of a charged Higgs boson.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2001 |
| Genre | : |
| ISBN | : |
Polarized[Lambda][sub b] to[Lambda][gamma] decays at the Z pole are shown to be well suited for probing a large variety of New Physics effects. A new observable is proposed, the angular asymmetry between the[Lambda][sub b] spin and photon momentum, which is sensitive to the relative strengths of the opposite chirality and Standard Model chirality b to s[gamma] dipole operators. Combination with the[Lambda] decay polarization asymmetry and comparison with the[Lambda][sub b] polarization extracted from semileptonic decays allows important tests of the V-A structure of the Standard Model. Modifications of the rates and angular asymmetries which arise at next-to-leading order are discussed. Measurements for[Lambda][sub b] to[Lambda][gamma] and the CP conjugate mode, with branching ratios of a few times 10[sup -5], are shown to be sensitive to non-standard sources of CP violation in the[Lambda][sub b] to[Lambda][gamma] matrix element. Form factor relations for heavy-to-light baryon decays are derived in the large energy limit, which are of general interest.
| Author | : Andrzej J. Buras |
| Publisher | : Cambridge University Press |
| Total Pages | : 739 |
| Release | : 2020-07-02 |
| Genre | : Science |
| ISBN | : 1108882757 |
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 | : OpenStax |
| Publisher | : |
| Total Pages | : 622 |
| Release | : 2016-11-04 |
| Genre | : Science |
| ISBN | : 9781680920451 |
University Physics is a three-volume collection that meets the scope and sequence requirements for two- and three-semester calculus-based physics courses. Volume 1 covers mechanics, sound, oscillations, and waves. Volume 2 covers thermodynamics, electricity and magnetism, and Volume 3 covers optics and modern physics. This textbook emphasizes connections between between theory and application, making physics concepts interesting and accessible to students while maintaining the mathematical rigor inherent in the subject. Frequent, strong examples focus on how to approach a problem, how to work with the equations, and how to check and generalize the result. The text and images in this textbook are grayscale.
| Author | : Krishna Kingkar Pathak |
| Publisher | : LAP Lambert Academic Publishing |
| Total Pages | : 120 |
| Release | : 2014-11-18 |
| Genre | : |
| ISBN | : 9783659622885 |
The book deals with an introductory idea of Leptonic and semileptonic decay of Heavy-Light mesons. It also highlight the application of a specific QCD potential model in this area of physics. Specifically, it also addresses the application of quantum mechanical perturbation method and explicitly the Dalagarno method of perturbation in this context. The necessity of modification of the model within the constraints of QCD and the model itself is explained and also improved accordingly. Out of the five chapters, the second and third chapters address the leptonic decay of B and D mesons whereas in the last two chapters, the study of semileptonic decay in terms of the universal form factor, Isgur-Wise function is well explained.
| Author | : Luca Pescatore |
| Publisher | : Springer |
| Total Pages | : 204 |
| Release | : 2017-10-04 |
| Genre | : Science |
| ISBN | : 3319664239 |
This thesis presents two analyses of semileptonic b → sl+l− decays using Flavour Changing Neutral Currents (FCNCs) to test for the presence of new physics and lepton flavour universality, and the equality of couplings for different leptons, which on the basis of experimental evidence is assumed to hold in the Standard Model, free from uncertainties as a result of knowledge of the hadronic matrix elements. It also includes the angular analysis of Lambda_b->Lambda mumu decay and the RK* measurement, both of which are first measurements, not yet performed by any other experiment.
