Double longitudinal-spin asymmetries in J/ψJ/\psi production at RHIC

The double longitudinal-spin asymmetry, $A_{LL}$, of the $J/\psi$ production in polarized proton-proton collisions is presented in this paper at QCD next-to-leading order. It is found that the obtained values of $A_{LL}$ are in general consistent with the PHENIX measurements. Various sets of the long-distance matrix elements (LDMEs) are employed in our calculation to study the possible theoretical uncertainties. It is found that, for p_t<5\gev, all these LDMEs lead to almost the same results, which are within the tolerance of the experimental data uncertainties

FDserver: A web service for protein folding research

*Summary:* To facilitate the study of protein folding, we have developed a web service for protein folding rate and folding type prediction as well as for the calculation of a variety of topological parameters of protein structure, which is freely available to the community.&#xd;&#xa;*Availability:* http://sdbi.sdut.edu.cn/FDserve