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Self-convolution and symmetry mapping were used to analyze proton multiplets in two-dimensional NMR spectra of the triterpene, obtusifolione (I). [on SciFinder (R)] ...
The proton and 31P NMR spectra of 2',3'-cyclic uridine monophosphate have been correlated by means of heteronuclear two-dimensional NMR. The spectra depend on the flip angle of one of the rf pulses. This is in contrast to previously reported applications w ...
We report the results of several studies of the Λc+π+π-X final state in continuum e+e- annihilation data collected by the Belle detector. An analysis of angular distributions in Λc(2880)+→Σc(2455)0, ++π+,- decays strongly favors a Λc(2880)+ spin assignment ...
We report a measurement of the branching fraction for the decay B + → ρ+π0 based on a 140 fb -1 data sample collected with the Belle detector at the KEKB asymmetric e+e- collider. We measure the branching fraction B(B+ →+π0) = (13.2 ± 2.3(stat)-1.9 +(syst) ...
We have searched for lepton-flavor-violating τ decays with a pseudoscalar meson (η, η′ and π0) using a data sample of 401 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No evidence for these decays is found and we set ...
The first fermion family might play a special role in understanding the physics of flavour. This possibility is suggested by the observation that the up-down splitting within quark families increases with the family number: m(u) is similar to m(d), m(c) > ...
