/ 98 08 35 8 v 1 1 9 A ug 1 99 8 More on high - Q 2 events with polarized beams

ar X iv : m at h / 98 08 06 5 v 1 [ m at h . Q A ] 1 4 A ug 1 99 8 QUANTUM DETERMINANTS AND QUASIDETERMINANTS

ar X iv : h ep - p h / 98 08 47 2 v 1 2 9 A ug 1 99 8 UH - 511 - 913 - 98 August 1998 CP VIOLATION IN HYPERON DECAYS

The theory and phenomenology of CP violation in hyperon decays is summarized.

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 ?

ar X iv : h ep - p h / 98 08 27 6 v 1 1 0 A ug 1 99 8 Superball dark matter 1

Supersymmetric models predict a natural dark-matter candidate , stable baryonic Q-balls. They could be copiously produced in the early Universe as a by-product of the Affleck-Dine baryogenesis. I review the cosmological and astrophysical implications , methods of detection, and the present limits on this form of dark matter.

ar X iv : h ep - p h / 98 08 45 3 v 1 2 8 A ug 1 99 8 CP VIOLATION

The salient features of CP-violating interactions in the standard elec-troweak theory and in a few of its popular extensions are discussed. Moreover a brief overview is given on the status and prospects of searches for CP non-conservation effects in low and high energy experiments.