CMS confirms jet quenching

Not to be outdone, the CMS Collaboration posted today its own circumstantial evidence of jet quenching in Pb+Pb collisions at the LHC. As in yesterday’s ATLAS publication, the evidence is based on the observation of strongly asymmetric di-jets. In one example, shown on the CMS web page, the trigger jet has a total transverse momentum of 205 GeV, while the back-jet has only 70 GeV momentum. Several other pairs with somewhat smaller, but still large transverse momentum asymmetry are also shown. The collaboration promises a comprehensive publication with these and similar results soon after the completion of the heavy ion run.

Comments are closed.