![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqcTA9Dg1QCUXxAYRGrQ3OvTtnnzLmuTXYnvPy_6gPjBBczdTpgFJvv4aeYdZQQrXL6swEJ4Yv5nmpfdRwcFHp6VOQBsfpQN0Xo8V_FReKsbcVbAwvIKeXsgHOOgouacqiRp-svkl0jgAz/s320/cmstopevent.jpg)
The reconstructed top mass from this event is around 210 GeV, while the latest measurement of the top quark mass from the Tevatron is 173.1 GeV. This is very surprising - naively, one would expect the American top quarks to be heavier ;-)
See more events from Atlas and CMS.