Penguin Eggs
نویسندگان
چکیده
منابع مشابه
Penguin Mediated
We report on preliminary results of searches for penguin mediated B decays based on 20.7 fb −1 of data collected at the Υ (4S) peak with the BABAR detector at PEP-II. The following branching fractions have been measured: B(B + → φK +) = (7.7 −5.6 ± 1.7) × 10 −6 , where the first error is statistical and the second systematic. For several other modes we report upper limits on their branching fra...
متن کاملPenguin Amplitudes: Charming Contributions *
We briefly introduce the Wick-contraction parametrization of hadronic matrix elements and discuss some applications to B and K physics. In spite of the progresses in non-perturbative techniques, the computation of hadronic matrix elements is still an open problem, particularly when the final state contains more than one meson. In this case, methods based on Euclidean field theory, such as QCD s...
متن کاملThe role of electroweak penguin and magnetic dipole QCD penguin on hadronic b Quark Decays
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 ...
متن کاملPenguin Topologies, Rescattering Eeects And
In the recent literature, constraints on the CKM angle arising from the branching ratios for B ! K and B d ! K decays received a lot of attention. An important theoretical limitation of the accuracy of these bounds is due to rescat-tering eeects, such as B + ! f 0 K + g ! + K 0. We point out that these processes are related to penguin topologies with internal up quark exchanges and derive SU (2...
متن کاملRadiative Penguin Decays from BABAR
Electroweak penguin decays provide a promising hunting ground for Physics beyond the Standard Model (SM). The decay B → Xsγ, which proceeds through an electromagnetic penguin loop, already provides stringent constraints on the supersymmetric (SUSY) parameter space [ 1]. The present data samples of ∼ 1 × 108BB̄ events allow to explore radiative penguin decays with branching fractions of the order...
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ژورنال
عنوان ژورنال: Emu - Austral Ornithology
سال: 1917
ISSN: 0158-4197,1448-5540
DOI: 10.1071/mu917038