An analysis of the vector meson spectrum from lattice QCD

We re-analyse meson sector data from the CP-PACS collaboration's dynamical simulations. Our analysis uses several different approaches, and compares the standard naive linear fit with the Adelaide Anzatz. We find that setting the scale using the J parameter gives remarkable agreement among data sets. Our predictions for the rho and phi masses have very small statistical errors, ~ 3 MeV, but the discrepancy between the different fitting approaches is ~ 40 MeV.Comment: 3 pages, 4 figures, 3 tables, proceedings for Lattice2003(Spectrum

sin⁡2(θ)w\sin^2(\theta)w estimate and bounds on nonstandard interactions at source and detector in the solar neutrino low-energy regime

We explore the implications of the Borexino experiment's real time measurements of the lowest energy part of the neutrino spectrum from the primary pp fusion process up to 0.420 MeV through the 7^Be decay at 0.862 MeV to the pep reaction at 1.44 MeV. We exploit the fact that at such low energies, the large mixing angle solution to the Mikheyev-Smirnov-Wolfenstein matter effects in the sun are small for 7^Be and pep and negligible for pp. Consequently, the neutrinos produced in the sun change their flavor almost entirely through vacuum oscillations during propagation from the sun's surface and through possible nonstandard interactions acting at the solar source and Borexino detector. We combine the different NSI effects at source and detector in a single framework and use the current Borexino data to bound NSI non-universal and flavor- changing parameters at energies below the reach of reactor neutrino experiments. We also study the implication of the current data for the weak- mixing angle at this "low-energy frontier" data from the Borexino experiment, where it is expected to be slightly larger than its value at the Z mass. We find $\sin^2(\theta)w=0.224+-0.016$, the lowest energy-scale estimate to date. Looking to the future, we use projected sensitivities to solar neutrinos in next generation dedicated solar experiments and direct dark matter detection experiments and find a potential factor five improvement in determination of the weak-mixing angle and up to an order of magnitude improvement in probing the NSI parameters space.Comment: 20 pages, 09 figures, lowest-energy value of sin^2(theta)w to date has been reported. Some text added. New sub-section(7.5) added. Published in JHE

Impact of human resource management information systems on the quality of appraisal performance process

Copyright @ 2013 EMCIS.These days the recent development of information systems and their impact on human resource activities is one of the main hot debates in many large organizations. Many managers argue that adopting technology to incorporate the HR activities could help to improve the quality of management’s decision making process. Alternatively, there are big companies which are not adopting any specific type of technology in their HR activities. The purpose of this paper is to identify the impacts of HRIS on the quality of HR activities, particularly from the appraisal performance point of view. The concept of the impact of HRIS on HR activities was applied to the case of company X which is one of the leader chemical companies in UK. In that process, interviews were conducted and they were the main methods for collecting personnel feedback, opinions and experiences about their new HRIS. It could be seen that, although the result of the research showed improvement in the quality of the activities in HR department, the quality growth was not as much as expected. It was assumed that the reason behind this limited impact on some activities could be because the new system needs some more time to implement potential efficiency gains. It is too early to measure the impact of new system on part of HR activities such as employees’ satisfaction. Keywords: Human Resource Information Systems, Management Information Systems, Executive Information Systems, Strategic Information Systems, Information Systems, Human Resources

Stabilization of a Two-Coordinate [GeCl]⁺ Cation by Simultaneous σ and π Donation from a Monodentate Carbodiphosphorane

Give me four: The synthesis, structure, and reactivity of [GeCl]+ and [SnCl]+ cations bearing a carbodiphosphorane as ancillary ligand are presented. In the Ge compound, simultaneous σ and π donation from the carbodiphosphorane to Ge is observed (see HOMO (left) and HOMO−1 (right); C black, H white, P orange, Cl green, Ge purple (not visible)), whereas only the σ dative component is present in the Sn analogue