One of the missing keys in the present understanding of the spin structure of the nucleon is the contribution from the gluons: the so-called gluon polarisation. This quantity can be determined in DIS through the Photon-Gluon Fusion (PGF) process, in which two analysis methods may be used: (i) identifying open charm events or (ii) selecting events with high-p T hadrons. The data used in the pres...

We present the study of two polarisation state analysers. The first consists a camera with removable QWP, and second non-polarisation rotating QWP stationary linear polariser. theoretical analysis experiment focus on studying influence polarimeter optical components accuracy errors such as retardation errors, misalignments extinction ratio Stokes parameters precision. This research is cornersto...

Photoelectron spin-polarisation measurements of In(5s2 5p) 2P,12 were performed in the autoionisation region of the 5s5p2-configuration using monochromatic circularly polarised synchrotron radiation at the electron storage ring BESSY. The autoionising levels are analysed in terms of partial cross section, dipole matrix elements and phase-shift differences. In addition the measured photoelectron...

The Cooler Synchrotron COSY delivers proton and deuteron beams in the momentum range from 300 MeV/c to 3400 MeV/c. The different modes of operation – internal experiments with thin or thick targets, external target experiments with slow extraction or with very short extraction pulses – require different ion optical conditions. Polarisation experiments are of increasing interest in the COSY comm...

The fluorescence probe 1,6, diphenyl-1,3,5-hexatriene was used to determine the micro-viscosity of third trimester amniotic fluid samples utilising an Aminco Bowman spectrofluorometer fitted with a polariser prism. The results were related to the lecithin sphingomyelin (L:S) ratio. A fluorescence polarisation value of 0.360 corresponded to an L:S ratio of 2.0 in uncomplicated and diabetic preg...

We identify the difference between the CM polarisation and the Chow polarisation on the “Hilbert scheme”. As a consequence, we give a numerical criterion for the CM stability as in Mumfords’ G.I.T.. Also, we write down an explicit formula for the generalised futaki invariant interms of weights and multiplicities of the associated degeneration. Research supported in part by an NSF Postdoctoral F...

Abstract. We have developed methods for tracing rays and performing radiative transfer through a magnetoactive plasma in a general relativistic environment. The two electromagnetic plasma modes propagate differently due to a combination of dispersive and gravitational effects. We have found that, when given an appropriate environment surrounding the central black hole, it is indeed possible to ...

This article presents an integrative model for the endorsement of pseudoscience: explanation-polarisation model. It is based on a combination perceived explanatory satisfaction and group polarisation, offering perspective different from classical confusion-based conception, in which pseudoscientific beliefs would be accepted through lack distinction ...

We show how the temperature and the polarisation of the cosmic microwave background are affected by bulk rotation of clusters of galaxies owing to the kinetic Sunyaev-Zeldovich effect. The main effects of rotation are (i) a shift of the position of the peak of the temperature fluctuation relative to the center of the cluster by a few percent of the core radius and (ii) a tilt of the direction o...

The aim of surface realisation is to produce a string from an input semantics. The task may be viewed as the inverse of parsing, and like parsing, it is made more difficult by the problem of lexical ambiguity in natural language. (Bonfante, Guillaume, and Perrier 2004) propose a polarisation technique for parsing that greatly reduces the effects of ambiguity. We show how polarisation can be ada...