4.07.2012: CERN's Higgs: I think we have it!

Today, the international news popped up with the news a 'Higgs boson-like particle (has been) discover(d)' [1] The german press even applauded 'Physicists celebrated breakthrough discovering the divine particle' [2],[3]. However, neither the paper of CERN's Atlas collaboration [4] nor the corresponding analysis of the CMS collaboration [5] is by far a direct evidence of the Higgs boson.

Rather, a (minimal scheme) Higgs boson with rest-mass of 125 GeV/c is used to explain the bumps in the distribution. Certainly the decay channel Higgs => γγ is the cleanest one and provides the most direct evidence [6].

However, after the recent failures announcing new physics, a conservative approach seems to be appropriate and a statistical evidence of some more σ is required.

 


[1] www.bbc.co.uk/news/world-18702455
[2] www.spiegel.de/wissenschaft/technik/higgs-boson-cern-gibt-entdeckung-von-teilchen-am-lhc-bekannt-a-842478.html
[3] www.heise.de/newsticker/meldung/Higgs-Boson-CERN-weist-neues-Elementarteilchen-nach-1631922.html
[4] arxiv.org/abs/1207.7214
[5] arxiv.org/abs/1207.7235
[6] CMS-Higgs_GG.png