Kaon and Charm Physics: Theory

Abstract

We introduce and discuss basic topics in the theory of kaons and charmed particles. In the first part, theoretical methods in weak decays such as operator product expansion, renormalization group and the construction of effective Hamiltonians are presented, along with an elementary account of chiral perturbation theory. The second part describes the phenomenology of the neutral kaon system, CP violation, ε and ε ′ /ε, rare kaon decays, and some examples of flavour physics in the charm sector.

Rare Decay $B\rightarrow X_s\nu\bar\nu$ in the Two-Higgs-Doublet Model of Type-III

“…Under the assumption of neglecting all non-Z-mediated contributions, Buchalla et al [18] studied the constraints on the effective couplings Z L,R bs obtained by comparing the theoretical predictions of the branching ratios of B → X s νν, X s l + l − and B → K * µ + µ − decay modes with the experimental measurements [6,19,20] 1 :…”

The Electroweak Theory

“…The SU (2) L ⊗ U (1) Y gauge symmetry forbids a mass term for the electron in the matter piece (46). Moreover, the theory we have described contains four massless electroweak gauge bosons, namely A µ , b 1 µ , b 2 µ , and b 3 µ , whereas Nature has but one: the photon.…”

A Short Guide to Flavour Physics and CP Violation

“…• For aspects concerning the building blocks of gauge theories and the standard model see, for example, [1] • For CP and flavour aspects in particle physics the books [2][3][4] are two excellent sources, as well as the more specific reviews [5][6][7][8][9][10][11][12][13][14][15][16][17][18] • For topics related with effective field theories we refer the reader to [19][20][21][22][23] 2 The building blocks in particle physics…”