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In this paper we report rst optical reeectance spectra in the wavelength range 3800{9000 A for seven members of the Veritas asteroid family, as determined by Zappall a et al. In addition, we observed also the object 5107 1987 DS 6 , which joins the Veritas family when a slightly more relaxed criterion of selection is adopted. The obtained spectra show a(More)
We study the effect of increasing the masses of the outer planets to speed up the numerical integration of orbital evolutions of fictitious comets subject to planetary close encounters. We usë Opik's theory to model encounters on crossing orbits, and find that the distribution of energy perturbations, and especially of its tails, is changed significantly(More)
We report for the rst time rotationally resolved spectroscopic observations , as well as new photometric and polarimetric measurements, of the large S{type asteroid (6) Hebe, always at near{equatorial aspects. We have found evidence for only minor variations in Hebe's visible re-ectance spectrum over a rotational cycle, comparable to our measurement(More)
The observation potential of the decay B + → K + K + π − with the ATLAS detector at LHC is described in this paper. In the Standard Model this decay mode is highly suppressed, while in models beyond the Standard Model it could be significantly enhanced. To improve the selection of the K + K + π − final state, a charged hadron identification using(More)
Objective: The electric (¯ α) and magnetic (¯ β) pion Compton polarizabilities characterize the pion's deformation in the electromagnetic field of the γ during γπ Compton scattering. They depend on the rigidity of the pion's internal structure as a composite particle. The polarizabilities deduced by Antipov et al. in their low statistics Primakoff(More)
Objective: The electric (¯ α) and magnetic (¯ β) pion Compton polarizabilities characterize the pion's deformation in the electromagnetic field of the γ during γπ Compton scattering. They depend on the rigidity of the pion's internal structure as a composite particle. The polarizabilities deduced by Antipov et al. in their low statistics Primakoff(More)
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