  (Abriged) We present a study of the integrated physical properties of a
sample of 28 X-ray galaxy clusters observed with Chandra at redshift between
0.4 and 1.3. In particular, we have twelve objects in the redshift range
0.4-0.6, five between 0.6 and 0.8, seven between 0.8 and 1 and four at z>1,
compounding the largest sample available for such a study. We focus
particularly on the properties and evolution of the X-ray scaling laws. We fit
both a single and a double beta-model with the former which provides a good
representation of the observed surface brightness profiles, indicating that
these clusters do not show any significant excess in their central brightness.
By using the best-fit parameters of the beta-model together with the measured
emission-weighted temperature (in the range 3-11 keV), we recover gas
luminosity, gas mass and total gravitating mass out to R500. We observe scaling
relations steeper than expected from self-similar model by a significant (>3
sigma) amount in the L-T and Mgas-T relations. We detect hints of negative
evolution in the L-T, Mgas-T and L-Mtot relations, thus suggesting that systems
at higher redshift have lower X-ray luminosity and gas mass for fixed
temperature. In particular, when the 16 clusters at z>0.6 are considered, the
evolution becomes more evident and its power-law modelization is a
statistically good description of the data.
