ar X iv : h ep - p h / 99 06 27 3 v 1 7 J un 1 99 9 BUTP

ar X iv : h ep - t h / 99 06 02 9 v 1 3 J un 1 99 9

ar X iv : h ep - p h / 95 06 25 9 v 1 7 J un 1 99 5 CERN – TH / 95 – 83 hep - ph / 9506259 May 1995 MULTIPLE HARD

ar X iv : h ep - p h / 99 06 27 2 v 1 7 J un 1 99 9 DISSIPATIVE CONTRIBUTIONS TO ε ′

The time evolution and decay of the neutral kaon system can be described using quantum dynamical semigroups. Non-standard terms appear in the expression of relevant observables; they can be parametrized in terms of six, new phenomenological constants. We discuss how the presence of these constants affects the determination of the parameter ε ′ /ε.

ar X iv : h ep - p h / 99 06 23 9 v 1 3 J un 1 99 9 Ruling out a higher spin field solution to the cosmological constant problem

We consider the modification of Newton's gravity law in Dolgov's higher spin models [1, 2] designed to compensate the cosmological constant. We find that the effective Planck mass is unacceptably large in these models. We also point out that the properties of gravitational waves are entirely different in these models as compared to general relativity.

ar X iv : h ep - p h / 97 06 29 1 v 1 9 J un 1 99 7 Quark Mass and Phase Transition for Strange Matter ⋆

We have derived the popularly used mass parametrization formula for light quarks and modified the corresponding formula for strange quarks with the mass-densitydependent model. A simple expression for the critical density of phase transition of strange quark matter at zero temperature is thus found and its value is estimated to be over 6 times the normal nuclear density.