Add to ORKGWe explore the Delta-I= 1/2 rule and epsilon'/epsilon in K -> pi pi transitions using a Dyson-Schwinger equation model. Exploiting the feature that QCD penguin operators direct K^0_S transitions through 0^{++} intermediate states, we find an explanation of the enhancement of I=0 K -> pi pi transitions in the contribution of a light sigma-meson. This mechanism also affects epsilon'/epsilon
We present the status of a lattice calculation for the K --> pipi matrix elements of the DeltaS=1 ef...
The $B_s$ system is analyzed in light of a possible width difference untagged $B_s$-meson decays may...
The flavor changing transitions in the c->u gamma, c->u gamma gamma and c->u l+ l- offer the possibi...
QCD penguins are responsible for about 2/3 of the Delta I=1/2 rule in K to pi pi decays, as inferred...
The very clean theoretical predictions for the rare decays K --> pi nu nu_bar and KL --> pi0 l+ l- a...
A simple matching procedure is proposed to extract constraints on effective meson theories. In this ...
Investigating leptonic decays of pi^-, K^-, B^-, pi^0, K_L^0, B^0, B_s^0 we present new bounds on so...
We review some recent theoretical results on rare kaon decays. Particular attention is devoted to es...
We calculate the contributions of the Kaluza-Klein (KK) modes to the K_L-K_S mass difference \Delta ...
Supersymmetric extensions of the Standard Model predict a large enhancement of the Wilson coefficien...
An overview is presented about old and recent methods to compute the $K\to \pi \pi$ decay amplitude
Content : 1) The leading twist pion wave function, 2) "Improved" QCD sum rules with non-local conden...
The theoretical status of the rare K --> pi nu nu, KL --> pi0 l+ l- and KL --> mu+ mu- decays in the...
The NA48/2 experiment at the CERN SPS collected in 2003 and 2004 large samples of the decays $K^{\pm...
Strong hadronic decays are discussed in the 't Hooft model for the two-dimensional QCD in the limit ...
We present the status of a lattice calculation for the K --> pipi matrix elements of the DeltaS=1 ef...
The $B_s$ system is analyzed in light of a possible width difference untagged $B_s$-meson decays may...
The flavor changing transitions in the c->u gamma, c->u gamma gamma and c->u l+ l- offer the possibi...
QCD penguins are responsible for about 2/3 of the Delta I=1/2 rule in K to pi pi decays, as inferred...
The very clean theoretical predictions for the rare decays K --> pi nu nu_bar and KL --> pi0 l+ l- a...
A simple matching procedure is proposed to extract constraints on effective meson theories. In this ...
Investigating leptonic decays of pi^-, K^-, B^-, pi^0, K_L^0, B^0, B_s^0 we present new bounds on so...
We review some recent theoretical results on rare kaon decays. Particular attention is devoted to es...
We calculate the contributions of the Kaluza-Klein (KK) modes to the K_L-K_S mass difference \Delta ...
Supersymmetric extensions of the Standard Model predict a large enhancement of the Wilson coefficien...
An overview is presented about old and recent methods to compute the $K\to \pi \pi$ decay amplitude
Content : 1) The leading twist pion wave function, 2) "Improved" QCD sum rules with non-local conden...
The theoretical status of the rare K --> pi nu nu, KL --> pi0 l+ l- and KL --> mu+ mu- decays in the...
The NA48/2 experiment at the CERN SPS collected in 2003 and 2004 large samples of the decays $K^{\pm...
Strong hadronic decays are discussed in the 't Hooft model for the two-dimensional QCD in the limit ...
We present the status of a lattice calculation for the K --> pipi matrix elements of the DeltaS=1 ef...
The $B_s$ system is analyzed in light of a possible width difference untagged $B_s$-meson decays may...
The flavor changing transitions in the c->u gamma, c->u gamma gamma and c->u l+ l- offer the possibi...