Introduction to Soft-Collinear Effective Theory
Introduction to Soft-Collinear Effective Theory

Author: Thomas Becher

Publisher: Springer

Published: 2015-03-04

Total Pages: 214

ISBN-13: 3319148486

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Among resummation techniques for perturbative QCD in the context of collider and flavor physics, soft-collinear effective theory (SCET) has emerged as both a powerful and versatile tool, having been applied to a large variety of processes, from B-meson decays to jet production at the LHC. This book provides a concise, pedagogical introduction to this technique. It discusses the expansion of Feynman diagrams around the high-energy limit, followed by the explicit construction of the effective Lagrangian - first for a scalar theory, then for QCD. The underlying concepts are illustrated with the quark vector form factor at large momentum transfer, and the formalism is applied to compute soft-gluon resummation and to perform transverse-momentum resummation for the Drell-Yan process utilizing renormalization group evolution in SCET. Finally, the infrared structure of n-point gauge-theory amplitudes is analyzed by relating them to effective-theory operators. This text is suitable for graduate students and non-specialist researchers alike as it requires only basic knowledge of perturbative QCD.

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.

B Physics And Cp Violation: Bcp4 - Proceedings Of The International Workshop
B Physics And Cp Violation: Bcp4 - Proceedings Of The International Workshop

Author: T Ohshima

Publisher: World Scientific

Published: 2001-09-25

Total Pages: 392

ISBN-13: 9814490776

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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.

Gauge Theory of Weak Decays
Gauge Theory of Weak Decays

Author: Andrzej Buras

Publisher: Cambridge University Press

Published: 2020-07-02

Total Pages: 739

ISBN-13: 1107034035

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"The ultimate question of elementary particle physics is: What is the fundamental Lagrangian of nature surrounding us? The Lagrangian of the SM is very successful in describing nature at the currently available energy range. The discovery of the Higgs boson completed the particle spectrum of the SM and it is another proof of how well the SM works. Nevertheless the SM cannot be the end of the story and it is for sure not the fundamental Lagrangian of nature. The Lagrangian of the SM looses its validity at the latest at the Planck scale where gravitational effects become noticeable.Most physicists think of the SM as an effective theory that has to be replaced by a more fundamental theory above the TeV scale. What the word effective really means will hopefully be clear at later stages of our book. For the time being we will list some problems and open questions of the SM"--

B Decays (Revised 2nd Edition)
B Decays (Revised 2nd Edition)

Author: Sheldon Stone

Publisher: World Scientific

Published: 1994-08-01

Total Pages: 673

ISBN-13: 9814583308

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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.

Particle Physics Phenomenology
Particle Physics Phenomenology

Author: Hsiang-nan Li

Publisher: World Scientific

Published: 2001

Total Pages: 250

ISBN-13: 9812799982

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In this volume, recent theoretical and experimental progress in QCD phenomenology, neutrino physics, B physics and CP violation is reviewed. Contents: Lectures: Hadronic Light-Front Wavefunctions and QCD Phenomenology (S J Brodsky); Lectures on the Theory of Non-Leptonic B Decays (M Neubert); Neutrino Physics (P Vogel); Invited Talks: Recent Results from Lattice QCD on CP-PACS (S Aoki); QCD on a Transverse Lattice (M Burkardt & S Seal); QCD at the Tevatron and LHC (J Huston); Rare B Physics Results from BELLE (C H Wang); Recent BCP Progress in Taiwan (H-n Li); QCD-Improved Factorization in Nonleptonic B Decays (J Chay); Rare Radiative B Decays in Perturbative QCD (D Pirjol); Neutrino Experiments: Highlights (H T-K Wong); Neutrinos and Cosmology (S Pakvasa); Embed Zee Neutrino Mass Model into SUSY (K Cheung); Electroweak Sudakov Corrections at 2 Loop Level (H Kawamura). Readership: Graduate students, researchers and academics in particle physics.

Heavy Flavor Physics - Proceedings Of The Seventh International Symposium
Heavy Flavor Physics - Proceedings Of The Seventh International Symposium

Author: Claudio Campagnari

Publisher: World Scientific

Published: 1999-11-15

Total Pages: 506

ISBN-13: 9814543187

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The physics of heavy flavors is a very active area of research in experimental and theoretical high energy physics. A number of heavy flavor experiments at new or upgraded accelerators are just coming on line to address some of the most fundamental questions of particle physics, e.g. matter-anti-matter asymmetry (CP violation).The Seventh International Symposium on Heavy Flavor Physics focused primarily on the physics of bottom and charmed quarks, but there were also sessions on the top quark and the tau lepton. It presented a great opportunity to take stock of the field on the eve of the new era in heavy flavor physics which will be opened up by the next generation of experiments.