J. E. B. Mayor and Todhunter
نویسندگان
چکیده
منابع مشابه
Short Distance Analysis of ¯ B → D (∗)0 e + e − and ¯ B → J/ψe + e −
Over a large fraction of phase space a combination of an operator product and heavy quark expansions effectively turn the decay B̄ → D(∗)0e+e− into a “short distance” process, i.e., one in which the weak and electromagnetic interactions occur through single local operators. These processes have an underlying W-exchange quark diagram topology and are therefore Cabibbo allowed but suppressed by co...
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[reaction: see text] The first total synthesis of litseaverticillols B (1), E (2), I (4), and J (5) as well as the structural reassignment of litseaverticillol E (2) have been achieved by means of a biomimetic sequence of transformations during which a [4 + 2]-initiated reaction cascade and an ene reaction, both involving singlet oxygen ((1)O(2)), formed key steps. The reassignment of the struc...
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INTRODUCTION Many studies have examined the health problems among survivors of disasters, showing that the most frequently reported symptoms after disasters are mental health problems, such as posttraumatic stress symptoms, depression, and anxiety (1, 2). In the last decade, the Netherlands was struck by a few national disasters. On October 4, 1992, an El Al Boeing 747 airplane crashed into two...
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Steno's inability to explain an affair of the soul such as pain in terms of the impact of matter reveals the dualist split between science and religion which makes itself increasingly perceptible at the time and seems to have troubled him fundamentally. Had earlier scientific men such as Harvey and Van Helmont been perhaps happier in their monist view of the world and of the 'working-matter' in...
متن کاملB?J/?(?,K) Decays within QCD Factorization Approach
We used QCD factorization for the hadronic matrix elements to show that the existing data, in particular the branching ratios BR ( ?J/?K) and BR ( ?J/??), can be accounted for this approach. We analyzed the decay within the framework of QCD factorization. We have complete calculation of the relevant hard-scattering kernels for twist-2 and twist-3. We calculated this decays in a special scale ...
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ژورنال
عنوان ژورنال: Nature
سال: 1917
ISSN: 0028-0836,1476-4687
DOI: 10.1038/099264b0