This research, works with the effective Hamiltonian and the quark model. Using, the decay rates of matter-antimatter of b quark was investigated. We described the effective Hamiltonian theory which was applied to the calculation of current-current (Q1,2), QCD penguin (Q3,…,6), magnetic dipole (Q8) and electroweak penguin (Q7,…,10) decay rates. The gluonic penguin structure of hadronic decays ...

In this research we work with the effective Hamiltonian and the quark model. We investigate the decay rates of matter-antimatter of quark. We describe the effective Hamiltonian theory and apply this theory to the calculation of current-current ( ), QCD penguin ( ), magnetic dipole ( ) and electroweak penguin ( ) decay rates. The gluonic penguin structure of hadronic decays is studied thro...

in this research we work with the effective hamiltonian and the quark model. we investigate the decay rates of matter-antimatter of quark. we describe the effective hamiltonian theory and apply this theory to the calculation of current-current ( ), qcd penguin ( ), magnetic dipole ( ) and electroweak penguin ( ) decay rates. the gluonic penguin structure of hadronic decays is studied through th...

Using the next-to-leading order low energy effective Hamiltonian for ∆B = 1 transitions, the effects of electroweak penguin operators in some two-body decay modes of B s meson are estimated in the Standard Model (SM). We find that in B s → π+K− and B s → K+K− decay modes, the electroweak penguin effects are small, while in B s → πK̄0, φK̄0, φφ, the electroweak penguin operators enhance or reduce ...

We discuss a possibility of large electroweak (EW) penguin contribution in B → Kπ and ππ. The recent experimental data may be still suggesting that there are some discrepancies between the data and theoretical estimations. In B → Kπ decays, to explain several theoretical relations among the branching ratios, a slightly large electroweak penguin contribution and large strong phase differences or...

We discuss a possibility of large electroweak (EW) penguin contribution in B → Kπ and ππ. The recent experimental data may be still suggesting that there are some discrepancies between the data and theoretical estimations. In B → Kπ decays, to explain several theoretical relations among the branching ratios, a slightly large electroweak penguin contribution and large strong phase differences or...

Exclusive radiative and electroweak b → d and b → s penguin decays at NLO Abstract We provide Standard Model expectations for the rare radiative decays B → K * γ, B → ργ and B → ωγ, and the electroweak penguin decays B → K * ℓ + ℓ − and B → ρ ℓ + ℓ − at the next-to-leading order (NLO), extending our previous results to b → d transitions. We consider branching fractions, isospin asymmetries and ...

Using the next-to-leading order low energy effective Hamiltonian for |∆B| = 1, ∆C = ∆U = 0 transitions, the contributions of electroweak penguin operators in B−(B0 d) → PP and PV decays are estimated in the standard model. We find that, for some channels, the electroweak penguin effects can enhance or reduce the QCD penguin and/or tree level contributions by at least 30%, and can even play domi...

After updating the determination of the combination of Kobayashi-Maskawa elements ImVtdV ∗ ts according to our new estimate of the parameter B̂K , we study the CP -violating ratio ε/ε by means of hadronic matrix elements computed to O(p) in the chiral expansion. It is the first time that this order in chiral perturbation theory is included. We also discuss the relevance of some O(p) terms that a...

We discuss about a possibility of large electroweak penguin contribution in B → Kπ and ππ from recent experimental data. The experimental data may be suggesting that there are some discrepancies between the data and theoretical estimation in the branching ratios of them. In B → Kπ decays, to explain it, a large electroweak penguin contribution and large strong phase differences seem to be neede...