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Published: 2002
Total Pages: 5
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DOWNLOAD EBOOKRecent experimental results on radiative and semileptonic B meson decays are described. Measurements of inclusive and exclusive b 2!s[gamma] and b 2!sll− decays, and exclusive B 2![rho][gamma] and B 2!K[nu]{bar [nu]} penguin decays are presented. The extraction of.
Author: Sheldon Stone
Publisher: World Scientific
Published: 1994-08-01
Total Pages: 673
ISBN-13: 9814583308
DOWNLOAD EBOOKThis 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: Sheldon Stone
Publisher: World Scientific
Published: 1992
Total Pages: 502
ISBN-13: 9789810213305
DOWNLOAD EBOOKThe study of b quarks has now reached a stage where it is useful to review what has been learned so far and also to look at the implications of future studies. The most important observations thus far measurement of the B lifetime, B0 B0 mixing, and the observation of b? u transitions, as well as more mundane results on hadronic and semileptonic transitions are described in detail by experimentalists who have been closely involved with the measurements. Theoretical progress in understanding b quark decays, including the mechanisms of hadronic and semileptonic decays, are described. Synthesizing the experimental and theoretical information, the authors discuss tests of the standard model and measurements of standard model parameters. Possibilities of more extensive tests using measurement of CP violation in the B system are also addressed.
Author: James Gratrex
Publisher:
Published: 2018
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor:
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Published: 2001
Total Pages: 5
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DOWNLOAD EBOOKWe update the branching ratios for the inclusive decays B 2!X{sub s}ll− and the exclusive decays B 2!(K, K*)ll−, with l = e, [mu], in the standard model by including the explicit [Omicron]([alpha]{sub s}) and [Lambda]{sub QCD}/m{sub b} corrections. This framework is used in conjunction with the current measurements of the branching ratios for B 2!X{sub s{gamma}} and B 2!Kl+l− decays and upper limits on the branching ratios for the decays B 2!(K*, X{sub s})l+l− to work out bounds on the Wilson coefficients C--, C, C9 and C10 appearing in the effective Hamiltonian formalism. The resulting bounds are found to be consistent with the predictions of the standard model and some variants of supersymmetric theories. We illustrate the constraints on supersymmetric parameters that the current data on rare B decays implies in the context of minimal flavour violating model and in more general scenarios admitting additional flavour changing mechanisms. Precise measurements of the dilepton invariant mass distributions in the decays B 2!(X{sub s}, K*, K)l+l−, in particular in the lower dilepton mass region, and the forward-backward asymmetry in the decays B 2!(X{sub s}, K*)l+l−, will greatly help in discriminating among the SM and various supersymmetric theories.
Author: Wei Shu Hou
Publisher: World Scientific
Published: 2000-12-29
Total Pages: 552
ISBN-13: 9814492663
DOWNLOAD EBOOKCP violation was first observed in 1964, but only in 1999 did we gain much greater experimental insight. Direct CP violation finally appeared in the form of ε′/ε in the K system. Indirect CP violation in B → J/Ψ Ks decay, the raison d'être for construction of e+e- B factories, was first sniffed out at the proton-antiproton collider. The asymmetric B factories — BABAR at SLAC and BELLE at KEK — were completed, while the symmetric B factory at Cornell was upgraded to CLEO-III. It seems that everyone is positioning himself for the great competition on “B Physics and CP Violation”, racing to unravel the Kobayashi-Maskawa matrix, especially the size and origin of CP phases. The change of millennium provides a dramatic backdrop.To have intensive discussions at the technical level, to create broader interest in the subject, and to maximize interaction between experimenters and theorists, this book starts with the status of B factories: accelerator, detector and physics analysis. Following an overview of B physics and the CKM matrix, it delves into the details of lifetime, spectroscopy and decays, with even more specialized discussions on rare decays, direct and indirect CP violation, factorization and final state interactions, determination of unitarity phases, etc. Topics on ε′/ε, rare K decay, charm and hyperon systems, and various T, CP and CPT tests are also discussed at length. The book closes with the outlook for hadron machines and the prospects for new physics. A special feature is that there are two summary talks, one on experiment and the other on theory. The book is further augmented by two dozen excellent contributed talks.
Author: Aneesh V. Manohar
Publisher: Cambridge University Press
Published: 2023-07-31
Total Pages: 205
ISBN-13: 1009402145
DOWNLOAD EBOOKAuthor: Hai-Yang Cheng
Publisher: World Scientific
Published: 2000
Total Pages: 554
ISBN-13: 9789810243760
DOWNLOAD EBOOKProceedings of the Third International Conference on B Physics and CP Violation, held in Taipei, Taiwan, December 3-7, 1999. The main focus of the conference was to discuss the state of the art and future prospects of the field, at a high technical level. The fifth conference is to be held in May 2002 in Philadelphia. The Fourth took place in Central Japan in February 2001.zation.
Author: Catherine Vander Velde
Publisher: World Scientific
Published: 1996-05-28
Total Pages: 1042
ISBN-13: 9814547700
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Publisher:
Published: 2006
Total Pages: 206
ISBN-13:
DOWNLOAD EBOOKRadiative decays of the B meson, B 2!X{sub s}[gamma], proceed via virtual flavor changing neutral current processes that are sensitive to contributions from high mass scales, either within the Standard Model of electroweak interactions or beyond. In the Standard Model, these transitions are sensitive to the weak interactions of the top quark, and relatively robust predictions of the inclusive decay rate exist. Significant deviation from these predictions could be interpreted as indications for processes not included in the minimal Standard Model, like interactions of charged Higgs or SUSY particles. The analysis of the inclusive photon spectrum from B 2!X{sub s}[gamma] decays is rather challenging due to high backgrounds from photons emitted in the decay of mesons in B decays as well as ee− annihilation to low mass quark and lepton pairs. Based on 88.5 million B{bar B} events collected by the BABAR detector, the photon spectrum above 1.9 GeV is presented. By comparison of the first and second moments of the photon spectrum with QCD predictions (calculated in the kinetic scheme), QCD parameters describing the bound state of the b quark in the B meson are extracted: m{sub b} = (4.45 ± 0.16) GeV/c2; [mu]{sub {pi}}2 = (0.65 ± 0.29) GeV2. These parameters are useful input to non-perturbative QCD corrections to the semileptonic B decay rate and the determination of the CKM parameter.
