Naturalness and the Higgs-hierarchy Problem (Particle Physics)
(CC: closed captions added)
Naturalness in physics refers to the assumption that the qualitative properties of nature should not depend on a fine-tuning of the inputs…
The Standard Model and Beyond by Paul Langacker:
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With the discovery of what looks to be the Higgs boson, LHC researchers are turning their attention to the next big question, which is the predicted mass of the newly discovered particles. When the effects of quantum mechanics is taken into account, the mass of the Higgs boson should be incredibly high…perhaps upwards of a quadrillion times higher than what was observed. In this video, Fermilab’s Dr. Don Lincoln explains how it is that the theory predicts that the mass is so large and gives at least one possible theoretical idea that might solve the problem. Whether the proposed idea is the answer or not, this question must be answered by experiments at the LHC or today’s entire theoretical paradigm could be in jeopardy.
Naturalness – Supersymmetry & Grand Unified Theory (Particle Physics)