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Discovery of Higgs-like particle opens new questions

from Waves and Packets

From July 7, 2012: In July, the ATLAS and CMS teams reported the discovery of what very well may be the long sought-after Higgs boson. But like all great discoveries there are many profound questions remaining that can actually be simply stated. Rolf Heuer, CERN's director-general, laid it out simply by saying, "Which Higgs?" Both Joe Incandela and Fabiola Gianotti talked about the need for more data. Yale University's Keith Baker points out that there is not yet enough data to determine the intrinsic spin and parity of whatever particle may be attributed to this excess. Also the gamma-gamma Higgs decay channel can have heavy states contributing to the process that signals new physics beyond even the Higgs itself.

But the "which Higgs" question raises the possibility of multiple Higgs, and that would be an extremely interesting result for theorists like Maryland's Jim Gates. Supersymmetry, which Gates first discussed in his 1977 Ph.D. thesis, demands multiple Higgs particles and their superpartners. On the NSBP blog Vector, several physicists discuss this new discovery, implications for SUSY and what comes next. more

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