Tereingaornis moisleyi— A new Pliocene penguin
نویسندگان
چکیده
منابع مشابه
New physics in penguin dominated
Measurements of the combined branching ratios for B ! K and B d ! K allow interesting constraints on the CKM angle , the ratio r jT 0 j=jP 0 j of the current-current and penguin operator contributions to B d ! K , and the CP asymmetry in that decay. Present CLEO results for these branching ratios indicate where problems with consistency of the Standard Model may arise in the future. In this pap...
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Measurements of the combined branching ratios for B → πK and Bd → πK allow interesting constraints on the CKM angle γ, the ratio r ≡ |T ′|/|P ′| of the current-current and penguin operator contributions to Bd → πK, and the CP asymmetry in that decay. Present CLEO results for these branching ratios indicate where problems with consistency of the Standard Model may arise in the future. In this pa...
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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...
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Difficulties remain with theoretical explanations of the apparent reduced zonal sea surface temperature gradient in the tropical Pacific of the Pliocene. One favored hypothesis is that it was a ‘‘permanent El Niño’’ state, with the warm phase of ENSO remaining fixed over millions of years. Here, an alternative is suggested— that there was a ‘‘perpetually running ENSO’’ with a shorter return tim...
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...
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ژورنال
عنوان ژورنال: New Zealand Journal of Geology and Geophysics
سال: 1983
ISSN: 0028-8306,1175-8791
DOI: 10.1080/00288306.1983.10422257