Recent data from the CDF collaboration on the production of spin-triplet bottomonium states at the Tevatron pp̄ collider are analyzed within the NRQCD factorization formalism. The color-singlet matrix elements are determined from electromagnetic decays and from potential models. The color-octet matrix elements are determined by fitting the CDF data on the cross sections for Υ(1S), Υ(2S), and Υ(3...

2014 Radiative lifetime for 17 vibrational levels corresponding to 7 singlet and 3 triplet electronic states have been measured by using a delayed-coincidence method. We report first measurements of four H2 levels of which lifetimes range from 34 to 110 ns. J. Phys. France 49 (1988) 445-449 MARS 1988, Classification Physics Abstracts 34.80G

Complexes of the general composition Rh(phpy)2(S∪E) with phpy− = 2-(2-pyridyl)phenyl and S∪E− = diethyldithiocarbamate, 2-pyridinethiolate and 2-quinolinethiolate were prepared and characterized. The complexes with S∪E− = diethyldithiocarbamate and 2-pyridinethiolate show a low-temperature luminescence which originates from a phpy ππ∗ intraligand triplet. For the complex with S∪E− = 2-quinoline...

The angular momentum (partial wave) reduction of the Lippmann–Schwinger equation describing the interaction of two spin 1 2 particles is extended to the case in which the spin singlet and triplet states are coupled. A straight forward method for obtaining the angular momentum decomposition of the general potential is indicated. The derived formalism is needed to describe the interaction between...

Electroweak precision data have been extensively used to constrain models containing physics beyond that of the Standard Model. When the model contains Higgs scalars in representations other than singlets or doublets, and hence ρ 6= 1 at tree level, a correct renormalization scheme requires more inputs than the three commonly used for the Standard Model case. In such cases, the one loop electro...

In the present work the multiband p-d model for CuO2-layer is treated. It was shown that for the realistic set of parameters besides Zhang-Rice two-particle singlet there is non-negligible contribution of two-particle triplet state to the top of the valence band. Also shown, that to gain quantitative agreement with experimental data the minimal approximation should include the spin fluctuations...

Abstract. We present two different models with electroweak scale right-handed neutrinos. One of the models is created under the constraint that any addition to the Standard Model must not introduce new higher scales. The model contains right-handed neutrinos with electroweak scale masses and a lepton number violating singlet scalar field. The scalar phenomenology is also presented. The second m...

We show that it is possible to empirically partition the differential cross section for pp → ppπ • into initial singlet and triplet differential cross sections in a model independent way which can be implemented using the existing technological capabilities at the PINTEX facility to study the reaction employing polarized beam or polarized target or both simultaneously.

However, for reactions between two radicals, which occur with diffusion-controlled rates, one cannot expect that substituents induce stereoselectivity. We have now shown that this changes in reactions of photolytically generated biradicals: Both the singlet and the triplet biradicals can react with high stereoselectivity, but the outcome of the reactions depends upon the multiplicity of the bir...