Quark mixing, CP violation and rare decays after the top quark discovery

Apr, 1997
174 pages
Part of Heavy flavours II, 65-238
Published in:
  • Adv.Ser.Direct.High Energy Phys. 15 (1998) 65-238
  • Published: 1997
e-Print:
Report number:
  • TUM-HEP-275-97,
  • TTP-97-15,
  • TTP97-15

Citations per year

19972004201120182024010203040
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 VcbV_{cb} and VubV_{ub}, and the calculations of NLO short distance QCD corrections improved considerably the predictions for various decay rates, the determination of the couplings VtdV_{td} and VtsV_{ts} 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\epsilon_K and B 0d,sBˉ 0d,sB~0_{d,s}-\bar B~0_{d,s} mixings, iii) the ratio ϵ/ϵ\epsilon'/\epsilon, iv) the rare K-decays KLπ 0e +e K_L\to\pi~0e~+e~-, K +π +ννˉK~+\to\pi~+\nu\bar\nu, KLπ 0ννˉK_L\to\pi~0\nu\bar\nu and KLμ +μ K_L\to\mu~+\mu~-, v) the radiative decays BXsγB\to X_s\gamma and BXsl +l B\to X_s l~+l~-, vi) the rare B-decays BXs,dννˉB\to X_{s,d}\nu\bar\nu and Bd,sl +l B_{d,s}\to 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 +ννˉK~+\to\pi~+\nu \bar\nu and KLπ 0ννˉK_L\to\pi~0\nu\bar\nu in the determination of the CKM parameters and in decisive testing of the Standard Model. An outlook for the coming years ends our review.
Note:
  • To appear in Heavy Flavours II, World Scientific (1997), eds. A.J. Buras and M. Linder
  • 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/
  • inspirereview:II-f-1
  • review
  • quark: interference
  • interference: (particle antiparticle)
  • CP: violation
  • neutral current: flavor changing
  • Feynman graph: higher-order
  • effective Hamiltonian
  • CKM matrix matrix
  • unitarity