We present weak gravitational lensing analysis of 22 high-redshift ( z \gtrsim 1 ) clusters based on Hubble Space Telescope images .
Most clusters in our sample provide significant lensing signals and are well detected in their reconstructed two-dimensional mass maps .
Combining the current results and our previous weak-lensing studies of five other high- z clusters , we compare gravitational lensing masses of these clusters with other observables .
We revisit the question whether the presence of the most massive clusters in our sample is in tension with the current \Lambda CDM structure formation paradigm .
We find that the lensing masses are tightly correlated with the gas temperatures and establish , for the first time , the lensing mass-temperature relation at z \gtrsim 1 .
For the power law slope of the M - T _ { X } relation ( M \propto T ^ { \alpha } ) , we obtain \alpha = 1.54 \pm 0.23 .
This is consistent with the theoretical self-similar prediction \alpha = 3 / 2 and with the results previously reported in the literature for much lower redshift samples .
However , our normalization is lower than the previous results by 20-30 % , indicating that the normalization in the M - T _ { X } relation might evolve .
After correcting for Eddington bias and updating the discovery area with a more conservative choice , we find that the existence of the most massive clusters in our sample still provides a tension with the current \Lambda CDM model .
The combined probability of finding the four most massive clusters in this sample after the marginalization over cosmological parameters is less than 1 % .