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Quark Mixing, CP Violation and Rare Decays After the Top Quark Discovery

1997/04/22 by Andrzej J. Buras, Robert Fleischer · 2 citations
Physics and Astronomy · #CP violation #Electroweak interaction #Neutrino Physics Research #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Radiative transfer #Standard Model (mathematical formulation) #Top quark #hep-ph

paper · pdf · doi:10.1142/9789812812667_0002

published as Adv.Ser.Direct.HighEnergyPhys.15:65-238,1998 · 180 pages, 35 figures, LaTeX. To appear in Heavy Flavours II, World Scientific (1997), Eds. A.J. Buras and M. Lindner. The complete paper is also available via anonymous ftp at ftp://www-ttp.physik.uni-karlsruhe.de/ , or via www at http://www-ttp.physik.uni-karlsruhe.de/cgi-bin/preprints/

arxiv created 1997/04/22 · openalex publication_date 1998/06/01 · openalex created_date 2016/06/24 · arxiv updated 2016/11/03 · openalex updated_date 2026/08/05

Abstract

We review the highlights of quark mixing, particle-antiparticle mixing, CP violation and rare K- and B-decays in the Standard Model. The top quark discovery, the precise measurement of its mass, the improved knowledge of the couplings Vcb and Vub, and the calculations of NLO short distance QCD corrections improved considerably the predictions for various decay rates, the determination of the couplings Vtd and Vts and of the complex phase in the Cabibbo-Kobayashi-Maskawa matrix. After presenting the general theoretical framework for weak decays, we discuss the following topics in detail: i) the CKM matrix, its most convenient parametrizations and the unitarity triangle, ii) the CP-violating parameter \εK and B0d,s- B0d,s mixings, iii) the ratio \ε'/\ε, iv) the rare K-decays KL\→\π0e+e-, K+\→\π+\ν ν, KL\→\π0\ν ν and KL\→\μ+-, v) the radiative decays B\→ Xs\γ and B\→ Xs l+l-, vi) the rare B-decays B\→ Xs,d\ν ν and Bd,s\→ l+l-, vii) CP violation in neutral and charged B-decays putting emphasis on clean determinations of the angles of the unitarity triangle, and viii) the role of electroweak penguins in B-decays. We present several future visions demonstrating very clearly the great potential of CP asymmetries in B-decays and of clean K-decays such as K+\→\π+\ν and in decisive testing of the Standard Model. An outlook for the coming years ends our review.

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