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321.
Robert Fleischer Robert Knegjens 《The European Physical Journal C - Particles and Fields》2011,71(1):1-10
The sensitivity of the zero position of the forward–backward asymmetry $\mathcal{A}_{\mathit{FB}}$ for the exclusive $B\rightarrow K_{1}(1270)\mu^{+}\mu^{-}$ decay is examined by using most general non-standard four-fermion interactions. Our analysis shows that the zero position of the forward–backward asymmetry is very sensitive to the sign and size of the Wilson coefficients corresponding to the new vector type interactions, which are the counter partners of the usual Standard Model operators but have opposite chirality. In addition to these, the other significant effect comes from the interference of scalar–pseudoscalar and tensor type operators. These results will not only enhance our theoretical understanding of the axial vector mesons but will also serve as a good tool to look for physics beyond the SM. 相似文献
322.
Christian Schröder Göstar Klingelhöfer Richard V. Morris Daniel S. Rodionov Iris Fleischer Mathias Blumers 《Hyperfine Interactions》2008,182(1-3):149-156
After almost 4 years of operating on the surface of Mars, Mössbauer spectroscopy has become a mature technique for robotic planetary exploration. The combination of quantitative information about the distribution of Fe among its oxidation and coordination states, identification of Fe-bearing phases, and relative distribution of Fe among those phases provides valuable contributions to the search for past water activity, the assessment of past environmental conditions, and the suitability for life of the two NASA Mars Exploration Rover landing sites. Experience from the Mars Exploration Rover Mission highlights needs for improvement of the instruments for future missions such as the Russian Phobos-Grunt and the European ExoMars rover. 相似文献
323.
We demonstrate an all-optical bump-on-tail instability by considering the nonlinear interaction of two partially coherent spatial beams. For weak wave coupling, we observe momentum transfer with no variation in intensity. For strong wave coupling, modulations appear in intensity and evidence appears for wave (Langmuir) collapse at large scales. Borrowing plasma language, these limits represent regimes of weak and strong spatial optical turbulence. In both limits, the internal spectral energy redistribution is observed by recording and reconstructing a hologram of the evolving dynamics. The results are universal and can appear in any wave-kinetic system with short-wave-long-wave coupling. 相似文献
324.
325.
E. Fleischer 《Fresenius' Journal of Analytical Chemistry》1870,9(1):70-71
Ohne Zusammenfassung 相似文献
326.
E. Fleischer 《Fresenius' Journal of Analytical Chemistry》1884,23(1):33-35
Ohne Zusammenfassung 相似文献
327.
328.
Mattias Appel Gerald Fleischer Dieter Geschke Jrg Krger Mario Winkler Amadou C. Dieng Grard Riess 《Macromolecular rapid communications》1996,17(2):81-85
The decrease of the droplet radii of silicone oil dispersed in a polystyrene matrix at a temperature of 140°C with increasing time was measured by NMR dynamic imaging. From this time dependence the diffusion coefficient of the silicone oil into the matrix was calculated to be 7 · 10−18 m2 · s−1. The uptake of the silicone oil in the polystyrene matrix was confirmed by broad line NMR measurements. 相似文献