s . hi st - p h ] 2 5 A ug 1 99 8 The fingers of the physics

ar X iv : h ep - p h / 98 08 41 1 v 1 2 5 A ug 1 99 8 EXPERIMENTAL CONSTRAINTS ON THE CABIBBO - KOBAYASHI - MASKAWA MATRIX

The LEP investigation of the B 0 d and B 0 s oscillations and of the Cabibbo-Kobayashi-Maskawa matrix element |V ub | improve the constraints on the other elements of this matrix. From a fit to the experimental data and the theory calculations it is possible to determine the vertex of the unitarity triangle as:

ar X iv : a st ro - p h / 96 08 03 6 v 1 8 A ug 1 99 6 TABLE 1 Properties of LMC Double - Mode

ar X iv : a st ro - p h / 98 08 21 9 v 1 2 0 A ug 1 99 8 Sgr A ∗ : A supermassive black hole or a spatially extended object ?

X iv : a st ro - p h / 98 05 32 6 v 2 1 0 A ug 1 99 8 The Cosmic Microwave Background and Observational Convergence in the Ω m − Ω Λ Plane

I use the most recent cosmic microwave background (CMB) anisotropy measurements to constrain the leading cold dark matter models in the Ωm − ΩΛ plane. A narrow triangular region is preferred. This triangle is elongated in such a way that its intersection with even conservative versions of recent supernovae, cluster mass-to-light ratios and double radio source constraints, is small and provides ...

ar X iv : a st ro - p h / 98 08 22 1 v 1 2 0 A ug 1 99 8 1 Spectrum of radiation from axion strings

In the wide variety of axion cosmologies in which axion strings form, their radiative decay is the dominant mechanism for the production of axions, imposing a tight constraint on the axion mass. Here, we focus on the mechanism by which axions are produced in this scenario and, in particular, the key issue of the axion spectrum emitted by an evolving network of strings.